JOSEPH C. CHANG RAND CORPORATION 1200 …...Page 1 JOSEPH C. CHANG, Ph.D. JOSEPH C. CHANG, Ph.D. RAND CORPORATION 1200 SOUTH HAYES ST, ARLINGTON, VA 22202 [email protected] (703)413-1100,

Page 1 JOSEPH C. CHANG, Ph.D.

JOSEPH C. CHANG, Ph.D.

RAND CORPORATION

1200 SOUTH HAYES ST, ARLINGTON, VA 22202

[email protected]

(703)413-1100, EXT 5932

Curriculum Vitae

(April 2017)

EDUCATION

Ph.D. in Computational Sciences and Informatics, emphasis on atmospheric

modeling, George Mason University, Fairfax, VA

M.S. in Meteorology, Massachusetts Institute of Technology, Cambridge, MA (all

but doctoral dissertation)

B.S. in Atmospheric Sciences, National Taiwan University, Taipei, Taiwan

PROFESSIONAL EXPERIENCE

Apr. 2017 Present Senior Physical Scientist, RAND Corporation, Arlington,

VA

Apr. 2005 Apr. 2017 Distinguished Analyst and Corporate Fellow, Homeland

Security Studies and Analysis Institute, ANSER, Falls

Church, VA

Jan. 2001 Apr. 2005 Program Manager, Northrop Grumman Mission Systems,

Falls Church, VA

Jul. 2010 Jun. 2011 Affiliate Research Professor, George Mason University,

Fairfax, VA

Dec. 2002 Aug. 2008 Research Assistant Professor, George Mason University,

Fairfax, VA

Aug. 1998 Jan. 2001 Program Director, Earth Tech, Alexandria, VA (now part

of TRC Environmental Corp.)

Mar. 1994 Aug. 1998 Section Manager, Earth Tech, Concord, MA (now part of

TRC Environmental Corp.)

May 1988 Mar. 1994 Senior Meteorologist, Sigma Research Corporation,

Lexington, MA

mailto:[email protected]


PROFESSIONAL SUMMARY

Dr. Joseph Chang is a Senior Physical Scientist at the RAND Corporation. Prior to

joining RAND, he was a Distinguished Analyst and Corporate Fellow at ANSER. He has

close to 30 years of experience in management and in diverse technical areas in homeland

security (e.g., border security, immigration, chemical security, aviation security,

infrastructure protection, risk assessment, operational analysis, and performance

measurement) and atmospheric sciences (e.g., atmospheric modeling, dispersion/plume

modeling, air pollution, environmental impacts, climate change, data analysis, and model

verification and validation). He has a superb track record in developing innovative,

rigorous, high-impact solutions to address the myriad of homeland-security challenges

faced by the Nation.

Below is a summary of his professional experience, showcasing his exceptional

versatility where he applied his strong technical and analytical skills to lead wide-ranging

interdisciplinary projects to inform policy decisions.

Dr. Chang’s experience in areas related to homeland security is highlighted as follows:

He led the efforts in developing a holistic Border Condition Index to assess the

general conditions of the U.S.-Mexico border region and inform policy decisions

of the Department of Homeland Security (DHS).

He developed an optimization-based strategic sampling framework to (1) assess

the performance of the current surveillance technology allocation along the U.S.-

Mexico border and (2) inform various policy and management questions (e.g.,

DHS’s readiness to respond to an illegal-migrant surge in different areas and how

to reallocate sensors if necessary).

He developed a model to estimate the number of illegal migrants who

successfully crossed the border each year, including those who were previously

apprehended and those who were never apprehended. This work fundamentally

changed how the Border Patrol and researchers at large view and use the border

apprehension data.

He conducted comprehensive performance assessments of various U.S. Customs

and Border Protection operations using innovative techniques.

He refined a unified model for the illegal immigration system to facilitate

discussions of policy options. The model includes four interconnecting

submodels: discrete-choice border crossing, border apprehension, removal, and

wage of illegal migrants.

He was a key member of the scientific advisory group who oversaw the planning

and execution of the Jack Rabbit field programs involving the release of 2 to 20

tons of pressurized, liquefied chlorine per trial. The field data collected are used

to refine dispersion modeling algorithms and improve the training of first

responders for large-scale toxic chemical releases.


He was a key member of the advisory board for the Chemical Facility Anti-

Terrorism Standards risk-tiering methodology, and provided critical inputs to

greatly improve the methodology’s adequacy and defensibility.

He developed a methodology for estimating human trafficking prevalence in the

United States. Such estimate raises awareness of the issue and produces data-

driven decisions about congressional appropriations and interagency resource

allocations.

He developed a probabilistic framework to address the performance of various

Transportation Security Administration’s risk-based screening objectives for low-

risk air passengers.

He studied the Federal Air Marshal Service’s current risk-based scheduling

system and provided recommendations for the next-generation scheduling system.

Dr. Chang’s experience in areas related to atmospheric sciences is highlighted as follows:

He provided technical management for the Department of Defense (DoD) Office

of the Special Assistant for Gulf War Illnesses to assess the potential exposures to

U.S. troops due to inadvertent chemical agent releases during the 1991 Gulf War.

He developed the Hybrid Plume Dispersion Model and the Offshore Coastal

Dispersion Model (an Environmental Protection Agency’s preferred regulatory

model). He also developed for the Department of Energy uranium enrichment

plants a dispersion model that accounts for complex thermodynamics and

chemistry of uranium hexafluoride.

He evaluated more than a dozen commonly-used dense-gas dispersion models that

are primarily used to model accidental releases of toxic industrial chemicals. He

also extensively evaluated DoD dispersion models, such as (1) the Joint Effects

Model, (2) the Hazard Prediction Assessment Capability, and (3) the

Chemical/Biological Agent Vapor, Liquid, and Solid Tracking model. The model

evaluation methodology that he co-developed has become the standard in the

scientific community.

He maintains the Modelers’ Data Archive, a collection of legacy atmospheric

transport and dispersion field data sets, and has been freely distributing the data to

hundreds of fellow scientists to facilitate their research and provide expert

guidance when appropriate.

Dr. Chang’s other professional achievements include the following:

As a Corporate Fellow of ANSER, he advised organization leadership on a wide

range of scientific and technical issues and mentored junior staff.

He organized and chaired numerous technical conferences and workshops. He

has been hosting the annual George Mason University (GMU) Transport and

Dispersion Modeling Conference for many years, and in 2011 he organized the

first-ever special session on the modeling of the Fukushima nuclear disaster.


He has published extensively. He authored or co-authored one book (Guidelines

for Use of Vapor Cloud Dispersion Models published by the American Institute

of Chemical Engineers), one book chapter, 24 peer-reviewed journal articles,

close to 70 conference presentations, and numerous project reports (see the list of

publications to appear later).

He has been invited to referee for eight scientific journals.

He is a Certified Consulting Meteorologist, a certification program administered

by the American Meteorological Society (AMS).

He co-chairs the AMS ad hoc Committee on Climate and Climate Change

Consulting Certification. He is a former board member of the AMS Board of

Certified Consulting Meteorologists and the AMS Committee on Meteorological

Aspects of Air Pollution.

He is a former affiliate research professor at GMU and advised two doctoral

students.

He participated in many litigation projects serving as an expert in dispersion

modeling.

SECURITY CLEARANCE

DoD Top Secret

CERTIFICATIONS

Certified Consulting Meteorologist (No. 533), American Meteorological Society

(awarded in 1994)

Green Belt, Six Sigma Program for Process Improvement (awarded in 2003)

PROFESSIONAL AFFILIATIONS

American Meteorological Society

American Economic Association

International Society for Preparedness, Resilience, and Security

Military Operations Research Society

Western Economic Association International

JOURNALS REFEREED

Atmospheric Environment

Boundary-Layer Meteorology

Environmental Fluid Mechanics

Environmental Science & Technology

International Journal of Greenhouse Gas Control

Journal of Applied Meteorology and Climatology


Journal of Loss Prevention in the Process Industries

Science of the Total Environment

VOLUNTEER SERVICES TO THE SCIENTIFIC COMMUNITY

Co-chair, American Meteorological Society Ad Hoc Committee on Climate and

Climate Change Consulting Certification (2016-present)

Steering committee, Urban Dispersion International Evaluation Exercise,

European Commission, Joint Research Centre (2015-present)

Board member, the American Meteorological Society Board of Certified

Consulting Meteorologists (2012-2015)

Board member, the American Meteorological Society Committee on

Meteorological Aspects of Air Pollution (2002-2005)

Organizer, George Mason University Transport and Dispersion Modeling

Conferences (2000-present); special sessions on the Jack Rabbit Field Experiment

(2009-present); special session on the Fukushima nuclear disaster (2011)

International Scientific Advisory Committee, Envirosoft 2004 Conference

PUBLICATIONS

Books (Chapters)

1. Hanna, S.R., P.J. Drivas, and J.C. Chang, 1996: Guidelines for Use of Vapor

Cloud Dispersion Models, 2nd edition, Center for Chemical Process Safety,

American Institute of Chemical Engineers, 345 East 47th Street, New York, NY

10017.

2. Chang, J.C., 2002: Uncertainty and sensitivity of dispersion model results to

meteorological inputs, two case studies. Chapter 11, Quantitative Methods for

Current Environmental Issues, Editors, C.W. Anderson, V. Barnett, P.C. Chatwin,

and A.H. El-Shaarawi. Springer, 270pp.

Refereed Publications

1. Hanna, S.R., and J.C. Chang, 2017: Dependence of maximum concentration from

chemical accidents on release duration. Atmos. Environ., 148, 1-7.

2. Hanna, S.R., J.C. Chang, and P. Huq, 2016: Observed chlorine concentrations

during Jack Rabbit I and Lyme Bay field experiments. Atmos. Environ., 125, 252-

256. http://dx.doi.org/10.1016/j.atmosenv.2015.11.029.

3. Hanna, S.R., and J.C. Chang, 2015: Skyscraper rooftop tracer concentration

observations in Manhattan and Comparisons with urban dispersion models.

Atmos. Environ., 106, 215-222. http://dx.doi.org/10.1016/j.atmosenv.2015.01.051.


4. Chang, J.C., 2013: Comments on a recent article on meteorological and

intelligence evidence of long-distance transit of chemical weapons fallout from

bombing early in the 1991 Persian Gulf War. Neuroepidemiology, 41, 183-184.

DOI: 10.1159/000354163.

5. Pullen, J., J. Chang, and S. Hanna, 2013: Air/sea transport, dispersion and fate

modeling in the vicinity of the Fukushima nuclear power plan: A Special

Conference Session Summary. Bulletin of Am. Meteorol. Soc., 94, 31-39. DOI

10.1175/BAMS-D-11-00158.1.

6. Hanna, S.R., R. Britter, E. Argenta, and J.C. Chang, 2012: The Jack Rabbit

chlorine release experiments; implications of dense gas removal from a

depression and downwind concentrations. J. Haz. Mat., 213-214, 406-412. DOI

10.1016/j.jhazmat.2012.02.013.

7. Hanna, S.R., and J.C. Chang, 2012: Acceptance criteria for urban dispersion

model evaluation. Meteorol. and Atmos. Phys., 116, 133-146, DOI

10.1007/s00703-011-0177-1.

8. Olesen, H.R., and J.C. Chang, 2010: Consolidating tools for model evaluation.

Int. J. Environment and Pollution, 40, 175-183.

9. Chang, J.C., S.R. Hanna, Z. Boybeyi, and P. Franzese, 2005: Use of Salt Lake

City Urban 2000 field data to evaluate the Urban Hazard Prediction Assessment

Capability (HPAC) dispersion model. J. Appl. Meteorol., 44, 485-501.

10. Chang, J.C., and S.R. Hanna, 2004: Air quality model performance evaluation.

Meteorol. and Atmos. Phys., 87, 167-196.

11. Chang, J.C., P. Franzese, K. Chayantrakom, and S.R. Hanna, 2003: Evaluations of

CALPUFF, HPAC, and VLSTRACK with two mesoscale field data sets. J. Appl.

Meteorol., 42, 453-466.

12. Hanna, S.R., and J.C. Chang, 2001: Use of the Kit Fox data to analyze dense gas

dispersion modeling issues. Atmos. Environ., 35, 2231-2242.

13. Hanna, S.R., G.A. Briggs, and J.C. Chang, 1998: Lift-off of ground-based

buoyant plumes. J. Haz. Mat., 59, 123-130.

14. Hanna, S.R., J.C. Chang, and M.E. Fernau, 1998: Monte-Carlo estimates of

uncertainties in predictions by a photochemical grid model (UAM-IV) due to

uncertainties in input variables. Atmos. Environ., 32, 3619-3628.

15. Hanna, S.R., J.C. Chang, and J.X. Zhang, 1997: Modeling accidental releases to

the atmosphere of a dense reactive chemical (uranium hexafluoride). Atmos.

Environ., 31, 901-908.

16. Hanna, S.R., and J.C. Chang, 1995: Comparison of predictions of the Hybrid

Plume Dispersion Model with observations at the Kincaid power plant, Int. J.

Environ. Poll., 5, 323-330.


17. Hanna, S.R. and J.C. Chang, 1995: Relations between meteorology and ozone in

the Lake Michigan region, J. Appl. Meteorol., 34, 670-678.

18. Hanna, S.R., J.C. Chang and D.G. Strimaitis, 1993; Hazardous gas model

evaluation with field observations. Atmos. Environ., 27A, 2265-2285.

19. Hanna, S.R. and J.C. Chang, 1993: Hybrid Plume Dispersion Model (HPDM)

improvements and testing at three field sites. Atmos. Environ., 27A, 1491-1508.

20. Hanna, S.R. and J.C. Chang, 1992: Representativeness of wind measurements on

a mesoscale grid with station separations of 312 m to 10000 m. Boundary Layer

Meteorology, 60, 309-324.

21. Hanna, S.R. and J.C. Chang, 1992: Boundary layer parameterizations for applied

dispersion modeling over urban areas. Boundary Layer Meteorology, 58, 229-259.

22. Hanna, S.R., D.G. Strimaitis and J.C. Chang, 1991: Evaluation of fourteen

hazardous gas models with ammonia and hydrogen fluoride field data. J. Haz.

Mat., 26, 127-158.

23. Scire, J.S. and J.C. Chang, 1991: Analysis of historical ozone episodes in the

SCCCAMP region and comparison with SCCCAMP-1985 field study data. J.

Appl. Meteorol., 30, 551 584.

24. Hanna, S.R., J.C. Chang and D.G. Strimaitis, 1990: Uncertainties in source

emission rate estimates using dispersion models. Atmos. Environ., 24A, 2971-

2980.

Selected Project Reports

1. Chang, J., and S. Hanna, 2016: Scientific Guidance in Planning of 2016 Jack

Rabbit II Field Experiment and Initial Observations of Field Data. Prepared for

the Transportation Security Administration, Department of Homeland Security.

Prepared by the Homeland Security Studies and Analysis Institute, Falls Church,

VA. HSSAI Report No. RP16-12-02. 42 pp.

2. Chang, J., S. Calkins, D. McGarvey, N. Kallfa, L. Nguyen, M. Roberts-Lahti, and

P. Keller, 2016: Strategic Sampling Framework for Surveillance Mission Needs

Analysis. Prepared for U.S. Customs and Border Protection, Department of

Homeland Security. Prepared by the Homeland Security Institute, Falls Church,

VA. HSSAI Report No. RP 14-14-03. 136 pp.

3. Beam, C.W., J. Chang, N. Kallfa, and N. Minogue, 2016: Development of a

Methodology for Determining Human Trafficking Prevalence. Prepared for

Science and Technology Directorate, Department of Homeland Security. Prepared

by the Homeland Security Institute, Falls Church, VA. HSSAI Report No. RP 15-

02.02-03. 91 pp.

4. Chang, J., S. Calkins, L. Nguyen, C. Beam, M. Roberts-Lahti, and P. Keller,

2016: Border Condition Index, Final Report (V. 3.0). Prepared for U.S. Customs

and Border Protection, Department of Homeland Security. Prepared by the


Homeland Security Institute, Falls Church, VA. HSSAI Report No. RP 14-14-02.

74 pp plus appendices.

5. Thompson, G., M. Appiah-Padi, J. Chang, N. Devorsey, A. Garnjost, S. Holt, D.

Huff, L. John, J. Lipsmeyer, M. McWilliams, C. Pabst, C. Prather, and L.

Wilkins, 2016: Hurricane Research Platform Replacement Analysis of

Alternatives, Volume I: Summary, Volume II: Appendices, and External Benefits

Analysis Report. Prepared for the National Oceanic and Atmospheric

Administration Transportation Security Administration Office of Marine and

Aviation Operations, Prepared by ANSER, Falls Church, VA. ANSER Report

No. A-N15-007.

6. Chang, J.C., and S.R. Hanna, 2016: Independent Verification and Validation of

Joint Effects Model Increment 2.0. Prepared for Joint Program Executive Office

for Chemical and Biological Defense (JPEO-CBD) Joint Program Manager (JPM)

Information Systems. 163 pp.

7. Chang, J.C., and S.R. Hanna, 2016: Preliminary Analysis of 2015 Jack Rabbit II

Field Concentration Data. Prepared for the Transportation Security

Administration, Department of Homeland Security. Prepared by the Homeland

Security Studies and Analysis Institute, Falls Church, VA. HSSAI Report No.

RP15-17-02. 60 pp.

8. Love, R., L. Lynaugh, J.C. Chang, G. Python, N. Stevens, and D. Farah, 2016:

Impact of Nicaragua Canal on Department of Homeland Security Equities:

Planning Considerations. Prepared for the Science and Technology Directorate,

Department of Homeland Security. Prepared by the Homeland Security Studies

and Analysis Institute, Falls Church, VA. HSSAI Report No. RP15-01.06-02. 82

pp

9. Chang, J.C., and S.R. Hanna, 2015: Scientific Guidance in Planning of Jack

Rabbit II Field Experiment. Prepared for the Transportation Security



RP13-25-04. 76 pp.

10. Baker, J.C., J.C. Chang, P. Hammar, P. Hull, A.B. McGrath, D. McGarvey, C.

Meszaros, C. Adams, A. Smith, M. Phillips, J. Alford, C. Ansel, N. Alvarez, and

A.K. Epstein, 2014: Independent Review of TSA’s Risk-Based Security Approach

for Low-Risk Air Passengers. Prepared for the Transportation Security



RP13-31-05. 86 pp. plus appendices.

11. Chang, J.C., and B. Streett, 2014: Toxic Inhalation Hazard (TIH) Rail Tank Car

Securement Survey. Prepared for the Transportation Security Administration,


and Analysis Institute, Falls Church, VA. HSSAI Report No. RP13-14-02. 30 pp.


12. Chang, J.C., and S.R. Hanna, 2014: Scientific Analysis of Jack Rabbit Field

Concentration Data & Videos. Prepared for the Transportation Security



RP13-25-02. 50 pp.

13. Keelean, D., I. Blachman-Biatch, J. C. Chang, B. Streett, and C. Hildebrand,

2014: Disaster Condition Index Feasibility Study. Prepared for the Science and

Technology Directorate, Department of Homeland Security. Prepared by the

Homeland Security Studies and Analysis Institute, Falls Church, VA. HSSAI

Report No. RP13-01.04.04-01. 48 pp plus appendices.

14. Phillips, M., J. Chang, M. McHugh, N. Minogue, H. Smith, G. Thompson, and M.

Wool, 2014: Analyzing the Performance of the National Network of Fusion

Centers. Prepared for the Office of Intelligence and Analysis, Department of

Homeland Security. Prepared by the Homeland Security Institute, Falls Church,

VA. HSSAI Report No. RP12-41. 86 pp. plus appendices.

15. Guerra, S., J. Chang, P. Keller, A. Reilly, A. Kaku, B. Streett, and C. Neely, 2013:

Border Condition Index, Final Report (V. 2.0). Prepared for U.S. Customs and

Border Protection, Department of Homeland Security. Prepared by the Homeland

Security Institute, Falls Church, VA. HSSAI Report No. RP12-13-03(a) (revised).

74 pp plus appendices.

16. Agrawal, M., E. Sylwester, J.C. Chang, E. Ambinder, , A. Epstein, and C.

Hildebrand, 2013: Chemical Facility Anti-Terrorism Standards Tiering

Methodology Peer Review, Final Report. Prepared for the Infrastructure

Compliance Security Division, National Protection and Programs Directorate,


and Analysis Institute, Falls Church, VA. HSSAI Report No. RP12-22-02. 124

pp.

17. Chang, J.C., and S.R. Hanna, 2013: Exploratory Analysis of Jack Rabbit Field

Experiment. Prepared for the Transportation Security Administration, Department

of Homeland Security. Prepared by the Homeland Security Studies and Analysis

Institute, Falls Church, VA. HSSAI Report No. RP12-06-02. 111 pp.

18. Chang, J.C., and S.R. Hanna, 2012: “Jack Rabbit” Field Experiment—

Implications of Dense-Gas Removal from a Depression and Downwind

Concentrations. Prepared by the Homeland Security Studies and Analysis

Institute, Arlington, VA. HSSAI Report No. RP11-34-01. 30 pp.

19. Chang, J.C., A. Reilly, B. Streett, and D. Judson, 2011: A Unified Model of the

Illegal Immigration System. Prepared for the Department of Homeland Security

Office of Program Analysis and Evaluation. Prepared by the Homeland Security

Studies and Analysis Institute, Arlington, VA. HSSAI Report No. RP09-06-10. 82

pp.


20. Sylwester, E., R. Turner, J.C. Chang, G.S. Vanni, and G. Gackstetter, 2010:

HSARPA Strategic and Technical Review, Part B: Strategic Review Findings.

Prepared for the Homeland Security Advanced Research Projects Agency,


and Analysis Institute, Arlington, VA. HSI Report No. RP10-28-07b.

21. Chang, J.C., and S.R. Hanna, 2010: Independent Results Validation of Joint

Effects Model for Urban Applications. Prepared for Joint Program Executive

Office for Chemical and Biological Defense (JPEO-CBD) Joint Program Manager

(JPM) Information Systems. 136 pp.

22. Guerra, S., J.C. Chang, T. Farrier, P. Keller, D. McGarvey, J. Olson, and G.

Swider, 2009: HSSAI Analytic Support to CBP Air and Marine. Prepared for the

Customs and Border Protection, Office of Air and Marine, Department of

Homeland Security. Prepared by the Homeland Security Institute, Arlington, VA.

HSI Report No. RP09-50-03

23. Kohout, R., J.C. Chang, H. Giles, P. Hammar, and B. Ayuub, 2008: TSA Airport

Employee Screening Pilot Program. Prepared for the Transportation Security


Security Institute, Arlington, VA. HSI Report No. RP08-27-05.

24. Chang, J.C., G. Abbott, R. Dickens, H.R. Blacksten, 2008: Independent

Verification and Validation of Development of Transportation Worker

Identification Credential (TWIC) Reader Requirements. Prepared for the United

States Coast Guard, Department of Homeland Security. Prepared by the

Homeland Security Institute, Arlington, VA. HSI Report No. RP08-25-02.

25. Chang, J.C., D. McGarvey, and C. Sullivan, 2008: Analysis for the Next-

Generation Federal Air Marshal Service (MSNS) Mission Scheduling and

Notification System (MSNS). Prepared for the Federal Air Marshal Service,

Transportation Security Administration, Department of Homeland Security.

Prepared by the Homeland Security Institute, Arlington, VA. HSI Report No.

RP07-28-04.

26. Baker, J., R. Kohout, P. Hammar, M. Doherty, S. Kirkpatrick, R. McHugh, D.

McGarvey, J. Chang, H.R. Blacksten, C. Shipbaugh, S. Bowen, and W.J. Castan,

2007: General Aviation Risk Assessment. Prepared for Office of General Aviation

Security , Transportation Security Administration, Department of Homeland

Security. Prepared by the Homeland Security Institute, Arlington, VA. HSI

Report No. RP06-55-04.

27. Chang, J.C., R. Kohout, A. Zimmerman, S. Kirkpatrick, J. Leetz, and S. Bowen,

2007: CBP Operational Assessment, Final Report. Prepared for the Office of

Policy and Planning, Customs and Border Protection, Department of Homeland

Security. Prepared by the Homeland Security Institute, Arlington, VA. HSI

Report No. RP06-51-01. 138 pp.


28. Chang, J.C., Z. Boybeyi, H. Tang, G. Cervone, J. Bakosi, S.R. Hanna, E.

Hendrick, L. Santos, and J.F. Bowers, 2007: Independent Verification and

Validation of Joint Effects Model. Prepared for the Naval Surface Warfare Center,

Dahlgren Division, Dahlgren, Virginia. 191 pp.

29. Chang, J.C., R. Kohout, H.R. Blacksten, and S. Bernard, 2006: CBP

Apprehensions at the Border. Prepared for the Office of Policy and Planning,

Customs and Border Protection, Department of Homeland Security. Prepared by

the Homeland Security Institute, Arlington, VA. HSI Report No. RP05-25f-04.

177 pp.

30. Chang, J.C., H.R. Blacksten, R. Kohout, D. Prigal, and S. Bernard, 2006:

Development of a Model to Estimate Flow of Illegal Migrants Across the Border.

Prepared for the Office of Policy and Planning, Customs and Border Protection,

Department of Homeland Security. Prepared by the Homeland Security Institute,

Arlington, VA. 27 pp.

31. Chang, J.C., S.R. Hanna, Z. Boybeyi, P. Franzese, S. Warner, and N. Platt, 2003:

Independent Evaluation of Urban HPAC with the Urban 2000 Field Data.

Prepared for the Defense Threat Reduction Agency, 6801 Telegraph Road,

Alexandria, VA 22310-3398.

32. Chang, J.C., 2002: Summary of Short-Range Dispersion Modeling Workshop

Cosponsored by the California Energy Commission and the California Air

Resources Board. Prepared for California Institute for Energy Efficiency, 1333

Broadway, Suite 240, Oakland, CA 94612-1918.

33. Chang, J.C., K. Chayantrakom, and S.R. Hanna, 2001: Evaluation of CALPUFF,

HPAC, and VLSTRACK with the Over-Land Along-Wind Dispersion (OLAD)

Field Data. School of Computational Sciences, George Mason University,

Fairfax, VA 22030-4444. Report available from

http://squall.scs.gmu.edu/camp/publica.html.

34. Chang, J.C., 1999: Intercomparison and Uncertainty of Atmospheric General

Circulation Models. School of Computational Sciences, George Mason

University, Fairfax, VA 22030-4444.

35. Chang, J.C., P. Franzese, and S.R. Hanna, 1999: Evaluation of CALPUFF, HPAC,

and VLSTRACK with the Dipole Pride 26 Field Data. School of Computational

Sciences, George Mason University, Fairfax, VA 22030-4444. Report available

from http://squall.scs.gmu.edu/camp/publica.html.

36. Chang, J.C., 1999: Methodology of Refined Modeling of the Khamisiyah Pit

Demolition. The Office of the Special Assistant for Gulf War Illnesses, Falls

Church, VA 22041, 46pp.

37. Chang, J.C., and L.-F. W. Chang, 1998: Development of Air Quality Forecast

Models for the Taipei/Keelung Area in Taiwan. Report no. 24725-58, prepared by

Earth Tech, Inc., 196 Baker Avenue, Concord, MA 01742, for Taiwan

Environmental Protection Administration, Department of Environmental


Monitoring and Information, 41 Chunghwa Road, Section 1, Taipei, Taiwan; and

U.S. Environmental Protection Agency, Office of International Activities, 401 M

Street S.W., Washington, DC 20460, USA.

38. Chang, J.C., M.E. Fernau, J.S. Scire, and D.G. Strimaitis, 1998: A Critical Review

of Four Types of Air Quality Models Pertinent to MMS Regulatory and

Environmental Assessment Missions. Report 25194-58, prepared by Earth Tech,

Inc., 196 Baker Avenue, Concord, MA 01742, for U.S. Department of the

Interior, Minerals Management Service, Gulf of Mexico OCS Region, 1201

Elmwood Park Blvd., New Orleans, LA 70123

39. Hanna, S.R., J.C. Chang, and G.A. Briggs, 1998: Dense Gas Dispersion Model

Modifications and Evaluations Using the Kit Fox Field Observations. Report no.

P011, prepared by Hanna Consultants, 3911 Carolyn Ave., Fairfax, VA 22031,

for the PERF 93-16 Dispersion Modeling Project, American Petroleum Institute,

1220 L Street, N.W., Washington, D.C., 20005.

40. Chang, J.C., and K.J. Hahn, 1997: User’s Guide for Offshore and Coastal

Dispersion (OCD) Model, Version 5. Report no. 21129, prepared by Earth Tech,

Inc., 196 Baker Avenue, Concord, MA 01742, for U.S. Department of the

Interior, Minerals Management Service, Gulf of Mexico OCS Region, 1201

Elmwood Park Blvd., New Orleans, LA 70123.

41. Chang, J.C., and L.L. Schulman, 1997: Quality Assurance Report for the

Meteorological Monitoring Program, September 1995 – August 1996, at Gilbert

Generating Station, Holland Township, New Jersey. Report no. 21462-01,

prepared by Earth Tech, Inc., 196 Baker Avenue, Concord, MA 01742, for Jersey

Central Power & Light Company, 150 West State Street, Third Floor, Trenton, NJ

08608.

42. Hanna, S.R., J.C. Chang, and J.X. Zhang, 1996: Technical Documentation of

HGSYSTEM/UF6 Model. K/SUB/93-XJ947/1, Office of Scientific and Technical

Information, P.O. Box 62, Oak Ridge, TN 37831.

43. Hanna, S.R., and J.C. Chang, 1996: HGSYSTEM/UF6 Model Enhancements for

Plume Rise and Dispersion Around Buildings, Lift-Off of Buoyant Plumes, and

Robustness of Numerical Solver. K/SUB/93-XJ947/R1, Office of Scientific and

Technical Information, P.O. Box 62, Oak Ridge, TN 37831.

44. Chang, J.C., and S.R. Hanna, 1995: Representativeness of 1993 GMAQS Ozone

Episodes and Relations Between Ozone Episodes and Meteorological Variables

in the Gulf of Mexico. Report no. 1246, prepared by Earth Tech, Inc., 196 Baker

Avenue, Concord, MA 01742, for Systems Applications International, 101 Lucas

Valley Road, San Rafael, CA 94903.

45. Hanna, S.R., and J.C. Chang, 1995: Analysis of HEGADAS Runs in Support of

Planning for PERF Field Tests. Report no. 1448-100, prepared by Earth Tech,

Inc., 196 Baker Avenue, Concord, MA 01742, for Western Research Institute,

Laramie, WY 82071.


46. Scire, J.S., E.M. Insley, D.G. Strimaitis, J.C. Chang, and E. Chang, 1995: Testing

of Meteorological and Dispersion Models for Use in Regional Air Quality

Modeling. Report no. 1314, prepared by Earth Tech, Inc., 196 Baker Avenue,

Concord, MA 01742, for the CADMUS Group, Inc., Waltham, MA 02154.

47. Hanna, S.R., and J.C. Chang, 1994: Analysis of Dispersion of Finite Duration

Releases of Dense Gases and Recommended Revisions to HEGADAS. Report no.

1411, prepared by Earth Tech, Inc., 196 Baker Avenue, Concord, MA 01742, for

Exxon Research and Engineering, 180 Park Ave., Florham Park, NJ 07932.

48. Hanna, S.R., and J.C. Chang, 1993: Representativeness of 1991 LMOS Ozone

Episodes and Relations Between Ozone Episodes and Meteorological Variables

in the Lake Michigan Area. Report no. 1197-407/411, prepared by Earth Tech,

Inc., 196 Baker Avenue, Concord, MA 01742, for Sonoma Technology, Inc.,

5510 Skylane Blvd., Suite 101, Santa Rosa, CA 95403.

49. Hanna, S.R., J.C. Chang, D.G. Strimaitis, L.L. Schulman, R.M. Meroney, and

R.E. Britter, 1993: Modeling of Finite Duration Releases of Hazardous Gases to

the Atmosphere, A Review of Current Research and a Presentation of a Program

for Future Research. Report no. 1280, prepared by Earth Tech, Inc., 196 Baker

Avenue, Concord, MA 01742, for American Petroleum Institute, 1220 L Street,

N.W., Washington, D.C., 20005.

50. Hanna, S.R., and J.C. Chang: 1992: Evaluation of the Use of the Japanese

Dispersion Coefficients in the Offshore and Coastal Dispersion (OCD) Model.

Report no. 1241, prepared by Earth Tech, Inc., 196 Baker Avenue, Concord, MA

01742, for Central Research Institute of the Electric Power Industry, 11-1, Iwato

Kita 2-chome, Komae-shi, Tokyo, Japan 201.

51. Hanna, S.R., J.C. Chang, and D.G. Strimaitis, 1992: Review of Dense Gas

Modeling with Emphasis on Application in Planning for Accidental Releases and

Emergency Responses. Report no. A221, prepared by Earth Tech, Inc., 196 Baker

Avenue, Concord, MA 01742, for the South Coast Air Quality Management

District, 21865 East Copley Drive, P.O. Box 4939, Diamond Bar, CA 91765.

52. Hanna, S.R., D.G. Strimaitis, and J.C. Chang, 1991: Hazard Response Modeling

Uncertainty (A Quantitative Method), Volume I: User’s Guide for Software for

Evaluating Hazardous Gas Dispersion Models; Volume II: Evaluation of

Commonly-Used Hazardous Gas Dispersion Models; Volume III: Components of

Uncertainty in Hazardous Gas Dispersion Models. Report no. A119/A120,

prepared by Earth Tech, Inc., 196 Baker Avenue, Concord, MA 01742, for

Engineering and Services Laboratory, Air Force Engineering and Services Center,

Tyndall Air Force Base, FL 32403; and for American Petroleum Institute, 1220 L

Street, N.W., Washington, D.C., 20005.

53. Hanna, S.R., D.G. Strimaitis, and J.C. Chang, 1991: Meteorological Influences on

Smoke/Obscurant Effectiveness, Phase II. Report no. 1135, prepared by Earth

Tech, Inc., 196 Baker Avenue, Concord, MA 01742, for Meteorology Division,


Material Test Directorate, U.S. Army Dugway Proving Ground, Dugway, UT

84022.

54. Hanna, S.R., and J.C. Chang, 1991: Modification of the Hybrid Plume Dispersion

Model (HPDM) for Urban Conditions and Its Evaluation Using the Indianapolis

Data Set, Volume I: User’s Guide for the HPDM-4.0 Software Package; Volume

II: Model Evaluation Results; Volume III: Analysis of Urban Boundary Layer

Data. Report no. A089, prepared by Earth Tech, Inc., 196 Baker Avenue,

Concord, MA 01742, for the Electric Power Research Institute (EPRI), 3412

Hillview Avenue, Palo Alto, CA 94303.

55. Scire, J.S., S.R. Hanna, D.J. Murphy, and J.C. Chang, 1989: Characterization of

Historical Ozone Episodes and Comparison with the SCCCAMP 1985 Field

Study. Report no. A034, prepared by Earth Tech, Inc., 196 Baker Avenue,

Concord, MA 01742, for the U.S. Department of the Interior, Minerals

Management Service, 381 Elden Street, Herndon, VA 20170.

Conference Proceedings and Presentations

1. Chang, J.C., S.L. Calkins, P.J. Keller, N. Kallfa, and M.S. Borkowski, 2016: An

Innovative Surveillance Strategy for U.S. Land Border Between Ports of Entry.

84th Military Operations Research Society Symposium, Quantico, Virginia.

2. Chang, J.C., S.R. Hanna, and J. Bowers, 2016: Independent Results Validation of

Joint Effects Model (JEM) Increment 2. 20th Annual George Mason University

Conference on Atmospheric Transport and Dispersion Modeling, Fairfax,

Virginia.

3. Chang, J.C. and S.R. Hanna, 2016: Modelers’ Data Archive – A Collection of

Atmospheric Transport and Dispersion Data Sets. 20th Annual George Mason

University Conference on Atmospheric Transport and Dispersion Modeling,

Fairfax, Virginia.

4. Hanna, S.R., J.C. Chang, T. Spicer, M. Sohn, S. Fox, M. Whitmire, L. Stockham,

D. Nicholson, and M. Mazzola, 2016: Preliminary Analysis of Observations from

the Jack Rabbit II-2015 Field Experiment on Dense Gas Dispersion in a Built

Environment. 20th Annual George Mason University Conference on Atmospheric

Transport and Dispersion Modeling, Fairfax, Virginia.

5. Hanna, S.R., J.C. Chang, T. Spicer, M. Sohn, S. Fox, M. Whitmire, L. Stockham,

and D. Nicholson, 2016: Jack Rabbit II – A field experiment on dense gas

dispersion in a built environment. 19th Joint Conference on the Applications of

Air Pollution Meteorology with the A&WMA, American Meteorological Society,

New Orleans, Louisiana.

6. Joseph, J.C., 2015: Joint Urban 2003 Data Archive and Meteorological Inputs.

Urban Dispersion International Evaluation Exercise (UDINEE) Workshop, Ispra,

Italy.

7. Hanna, S.R., J.C. Chang, J. Hearn, B. Hicks, S. Fox, M. Whitmire, T. Spicer, D.


Brown, M. Sohn, T. Yamada, 2015: Deposition Following Accidental Releases of

Chlorine From Railcars. 35th NATO/CCMS International Technical Meeting on

Air Pollution Modeling and Its Application, 4-8 Mary 2015, Montpelier, France.

8. Hanna, S.R., J.C. Chang, J. Hearn, B.B. Hicks, S.B. Fox, M. Whitmire, and D.P.

Storwold, Jr., 2015: Atmospheric Chemistry Knowledge Gaps for Accidental

Releases of Chlorine from Railcars. 17th Conference on Atmospheric Chemistry,

American Meteorological Society, Phoenix, Arizona.

9. Hanna, S.R., and J.C. Chang, 2014: Observed Chlorine Concentrations during

Lyme Bay and Jack Rabbit I Field Experiments. 2014 Chemical and Biological

Warfare Weaponization & Consequence Assessment Modeling Symposium,

National Ground Intelligence Center, Charlottesville, Virginia, December 8-12,

2014.

10. Hanna, S.R., J.C. Chang, T. Spicer, M. Sohn, M. Brown, and A. Wiborg, 2014:

Outdoor Dispersion of Chlorine in the Jack Rabbit II Mock Urban Area. 2014

Chemical and Biological Warfare Weaponization & Consequence Assessment

Modeling Symposium, National Ground Intelligence Center, Charlottesville,

Virginia, December 8-12, 2014.

11. Hanna, S.R., J.C. Chang, and J. Flaherty, 2014: Urban model evaluations with

skyscraper rooftop observations in Manhattan. 16th Conference on Harmonization

within Atmospheric Dispersion Modeling for Regulatory Purposes, Varna,

Bulgaria, September 8-11, 2014.

12. Hanna, S.R., J.C. Chang, S. Fox, M. Whitmire, T. Spicer, J. Hearn, and R. Meris,

2014: Designing Jack Rabbit II 20-ton chlorine release field experiment. 16th

Conference on Harmonization within Atmospheric Dispersion Modeling for

Regulatory Purposes, Varna, Bulgaria, September 8-11, 2014.

13. Hanna, S.R., and J.C. Chang, 2014: Puff or plume? 18th Conference on Air

Pollution Meteorology, American Meteorological Society, Atlanta, Georgia.

14. Hanna, S.R., and J.C. Chang, 2013: Updated Chlorine and Anhydrous Ammonia

Concentrations Observed in the Jack Rabbit Field Experiment, and Their Use in

Calibrating the Briggs’ Dense Gas Cloud Hold-up Formula in Demonstrating

Simple C(x) Relations. 17th Annual George Mason University Conference on

Atmospheric Transport and Dispersion Modeling, Fairfax, Virginia.

15. Chang, J.C., J. Pullen, S. R. Hanna, and P. Bieringer, 2012: Air/sea radiological

transport in the Fukushima nuclear power plant crisis. Presented to Board on

Atmospheric Sciences and Climate, National Academy of Sciences.

16. Hanna, S.R., and J.C. Chang, 2012: Dependence of downwind chlorine

concentrations on time duration of release for a given total mass released to the

atmosphere at ground level. Chemical and Biological Weapons Delivery Systems

and Consequence Assessment Modeling Conference, Charlottesville, Virginia.

17. Hanna, S.R., and J.C. Chang, 2012: Comparison of CALPUFF and SCIPUFF


with two mesoscale tracer studies (DP26 and OLAD). 10th Conference on Air

Quality Models, Environmental Protection Agency, Research Triangle Park,

North Carolina.

18. Hanna, S.R., J.C. Chang, R. Britter, and E. Argenta, 2012: Detrainment and

downwind dispersion of a dense chlorine cloud released into a depression. 17th

Conference on Air Pollution Meteorology, American Meteorological Society,

New Orleans, Louisiana.

19. Chang, J.C., A. Reilly, and D. Judson, 2012: A unified model of the illegal

immigration system. 2012 American Economic Association Annual Meeting,

Chicago, Illinois.

20. Hanna, S.R., J.C. Chang, R. Britter, E. Argenta, 2011: A Simple Model of the

Effects on Downwind Concentrations of a Delay of Chlorine Release in a

Depression during Light Winds and Application to Jack Rabbit Field Experiment.

15th Annual George Mason University Conference on Atmospheric Transport and

Dispersion Modeling, Fairfax, Virginia.

21. Chang, J.C., and D. Judson, 2011: A Unified Model of the Illegal Immigration

System. 86th Annual Conference, Western Economic Association International,

San Diego, California.

22. Chang, J.C., 2011: Estimating Flow and Apprehension Rates Using Recidivist

Apprehension Data. 86th Annual Conference, Western Economic Association

International, San Diego, California.

23. Hanna, S.R., R. Britter, R. Koopman, and J.C. Chang, 2011: Comparing Results

of Two Chlorine Release Field Experiments – Wild Stallion and Jack Rabbit.

Proceedings of Special Symposium on Applications of Air Pollution

Meteorology, American Meteorological Society, Seattle, Washington.

24. Chang, J.C., S.R. Hanna, R. Britter, and R. Koopman, 2010: Scientific Issues,

Preliminary Findings, and Recommendations of Jack Rabbit Field Trials. 14th

Annual George Mason University Conference on Atmospheric Transport and

Dispersion Modeling, Fairfax, Virginia.

25. Hanna, S.R., and J.C. Chang, 2010: Setting acceptance criteria for air quality

models. 31st NATO/CCMS International Technical Meeting on Air Pollution

Modeling and Its Application, 27 September-1 October 2010, Torino, Italy.

26. Chang, J.C., and S.R. Hanna, 2010: Modelers’ Data Archive—a collection of

atmospheric transport and dispersion data sets. 16th Conference on Air Pollution

Meteorology, American Meteorological Society, Atlanta, Georgia.

27. Hanna, J.C., and J.C. Chang, 2009: Results validation of Joint Effects Model

(JEM) using eight field experiments. 2009 Chemical and Biological Defense

Science and Technology Conference, Dallas, Texas.

28. Hanna, J.C., J.C. Chang, and I. Sykes, 2009: HPAC-urban and mass-consistent

urban model evaluations. 2009 Chemical and Biological Defense Science and


Technology Conference, Dallas, Texas.

29. Chang, J.C., S.R. Hanna, H. Tang, and J. Lindeman, 2009: Results validation of

Joint Effects Model using seven field data sets. 13th Annual George Mason

University Conference on Atmospheric Transport and Dispersion Modeling,

Fairfax, Virginia.

30. Chang, J.C., and S.R. Hanna, 2009: Results validation of Joint Effects Model

using seven field data sets. 2009 Chemical/Biological Weapon Delivery Systems

and Consequence Modeling Conference, Charlottesville, Virginia.

31. Hanna, S.R., I. Sykes, S. Parker, J. Chang, J.M. White, and E. Baja, 2009: Urban

HPAC/SCIPUFF and a simple urban dispersion model compared with the

Madison Square Garden 2005 tracer observations in New York City. Proceedings

of the 8th Symposium on the Urban Environment, American Meteorological

Society, Phoenix, Arizona.

32. Chang, J.C., 2008: Challenges in border security. 76th Military Operations

Research Symposium, U.S. Coast Guard Academy, New London, CT.

33. Hanna, S.R., and J.C. Chang, 2008: Gaps in toxic industrial chemical (TIC) model

systems. 12th Conference on Harmonization within Atmospheric Dispersion

Modeling for Regulatory Purposes, Cavtat, Croatia, October 6-9, 2008.

34. Hanna, S.R., and J.C. Chang, 2008: Urban HPAC and a simple urban dispersion

model compared with the Joint Urban 2003 (JU2003) tracer data. 12th Conference

on Harmonization within Atmospheric Dispersion Modeling for Regulatory

Purposes, Cavtat, Croatia, October 6-9, 2008.

35. Hanna, S.R., I. Sykes, J.C. Chang, J. White, and E. Baja, 2008: Urban HPAC and

a simple urban dispersion model compared with the Joint Urban 2003 (JU2003)

field data. Proceedings of 11th International Conference on Harmonisation within

Atmospheric Dispersion Modelling for Regulatory Purposes, Cavtat, Croatia.

36. Blacksten, H.R., and J.C. Chang, 2008: Fermi estimation of illegal migration

deterrence vs. apprehension probability. Capital Sciences 2008, Arlington, VA.

37. Chang, J.C., H. Tang, and Z. Boybeyi, 2007: Evaluation of JEM with historical

live agent test data. 11th George Mason George Mason University Conference on

Transport and Dispersion Modeling, Fairfax, VA.

38. Hanna, S.R., J.C. Chang, J. White, and J.F. Bowers, 2007: Evaluation of the

Hazard Prediction and Assessment Capability (HPAC) model with the Oklahoma

City Joint Urban 2003 (JU2003) tracer observations. 29th NATO/CCMS

International Technical Meeting on Air Pollution Modeling and Its Application,

24-28 September 2007, Aveiro, Portugal.

39. Hanna, S.R., J.C. Chang, J. White, and J.F. Bowers, 2007: Evaluation of the

HPAC dispersion model with the Joint Urban 2003 (JU2003) Tracer

Observations. 7th Symposium on the Urban Environment. American

Meteorological Society, Boston, MA.


40. Chang, J.C., 2005: Recovery and use of existing atmospheric transport and

dispersion (ATD) and associated meteorological data. Invited talk, special OFCM

(Office of the Federal Coordinator for Meteorology) session, 9th George Mason

George Mason University Conference on Transport and Dispersion Modeling,

Fairfax, VA.

41. Chang, J.C., S.R. Hanna, Z. Boybeyi, and J.F. Bowers, 2005: Gap analysis of

atmospheric transport and dispersion data sets. 9th George Mason George Mason

University Conference on Transport and Dispersion Modeling, Fairfax, VA.

42. Hanna, S.R., J.C. Chang, A. Venkatram, R.E. Britter, and M. Neophytou, 2004:

Use of Urban 2000 field data to determine whether there are significant

differences between the performance measures of several urban dispersion

models. 5th Conference on Urban Environment. American Meteorological

Society, Boston, MA.

43. Hanna, S.R., and J.C. Chang, 2004: Use of urban field study data. Symposium on

Planning, Nowcasting, and Forecasting in the Urban Zone. American


44. Chang, J. C., S. R. Hanna, Z. Boybeyi, and P. Franzese, 2003: Sensitivities of

Evaluation Results to Data Acceptance and Pairing Criteria. 7th George Mason

George Mason University Conference on Transport and Dispersion Modeling,

Fairfax, VA.

45. Hanna, S. R., J. C. Chang, Z. Boybeyi, and P. Franzese, 2003: Statistical and

Scientific Evaluation of Urban HPAC Using Urban 2000 Field Data. 7th George

Mason George Mason University Conference on Transport and Dispersion

Modeling, Fairfax, VA.

46. Chang, J.C., 2002: Implementation of ASTM D6589 procedures in the new

BOOT model evaluation software. 8th International Conference on Harmonization

within Atmospheric Dispersion Modeling for Regulatory Purposes, Sofia,

Bulgaria.

47. Chang, J.C., 2002: Comparison of dispersion model uncertainty components.

Proc. 12th Joint Conference on the Application of Air Pollution Meteorology with

the A&WMA, American Meteorological Society, Boston, MA.

48. Chang, J.C, K. Chayantrakom, and S.R. Hanna, 2002: CALPUFF, HPAC, and

VLSTRACK evaluation with the Over-Land Alongwind Dispersion (OLAD) field

data. 9th International Conference on the Modeling, Monitoring, and Management

of Environmental Problems. Bergen, Norway.

49. Hanna, S.R., and J.C. Chang, 2001: Examples of evaluations of new models with

field data. Conference on Guideline on Air Quality Modeling, A New Beginning,

Newport, Rhode Island; Air and Waste Management Association, Pittsburgh,

Pennsylvania.


50. Chang, J.C., 2000: Sensitivity of dispersion model results to high-resolution

meteorological inputs. 7th International Conference on Atmospheric Sciences and

Applications to Air Quality (ASAAQ). Taipei, Taiwan.

51. Chang, J.C., G.R. Sabia, H.M. Spencer, G.N. Faucheux, M. Dunford, and G.S.

Suidikas, 2000: Methodology for refined exposure assessments for the chemical

warfare agent release at the Khamisiyah pit, 68th Military Operation Research

Society (MORS) Symposium, Colorado Springs, CO. Military Research Society,

Alexandria, VA.

52. Chang, J.C., P. Franzese and S.R. Hanna, 2000: Evaluation of CALPUFF, HPAC,

and VLSTRACK with the Dipole Pride 26 Field Data. Proceedings, 11th Joint

Conf. on the Applications of Air Pollution Meteorology with the AWMA.

American Meteorological Society, Boston, MA, pp. 340-346.

53. Hanna, S.R., and J.C. Chang, 1999: Testing of the HEGADAS model using the

Kit Fox Field Data. International Conference and Workshop on Modeling the

Consequences of Accidental Releases of Hazardous Materials, 28 September – 1

October 1999, San Francisco. Center for Chemical Process Safety of the

American Institute of Chemical Engineers.

54. Chang, J.C., 1998: Some modeling issues for accidental release of hazardous

materials. 91st Annual Meeting of Air and Waste Management Association, San

Diego, CA.

55. Chang, J.C., 1998: Modeling accidental releases of hazardous materials. 10th Joint

Conference on the Applications of Air Pollution Meteorology with the Air and

Waste Management Association, 11-16 January 1998, Phoenix. American


56. Hutzell, W.T. and J.C. Chang, 1998: An algorithm for the overwater mixing

height to the Offshore Coastal Dispersion model. 10th Joint Conference on the

Applications of Air Pollution Meteorology with the Air and Waste Management

Association, 11-16 January 1998, Phoenix. American Meteorological Society,

Boston, MA.

57. Strimaitis, D.G., J.S. Scire, and J.C. Chang, 1998: Evaluation of the CALPUFF

dispersion model with two power plant data sets. 10th Joint Conference on the

Applications of Air Pollution Meteorology with the Air and Waste Management

Association, 11-16 January 1998, Phoenix. American Meteorological Society,

Boston, MA.

58. Chang, J.C., and K.J. Hahn, 1997: Introduction to the Graphical User Interface

(GUI) for the Offshore and Coastal Dispersion (OCD) model. 17th Information

Transfer Meeting, Gulf of Mexico Region, Minerals Management Service, 16-18

December, 1997, New Orleans, LA.

59. Hanna, S.R., J.C. Chang, M.E. Fernau, and D.A. Hansen, 1997: Estimates of

sensitivities of photochemical grid models to uncertainties in input parameters, as

applied to UAM-IV on the New York domain. 22nd NATO/CCMS International


Technical Meeting on Air Pollution Modeling and Its Application, 2-6 June 1997,

Clermont-Ferrand, France.

60. Chang, J.C., 1997: Modeling of offsite consequences for accidental releases of

hazardous materials. Energy Week >97 Petro-Safe Conference, 28-30 January,

1997, Houston, TX.

61. Chang, J.C., and K.J. Hahn, 1996: Development of the Graphical User Interface

(GUI) and other enhancements for the Offshore and Coastal Dispersion (OCD)

model. 16th Information Transfer Meeting, Gulf of Mexico Region, Minerals

Management Service, 10-12 December, 1996, New Orleans, LA.

62. Hanna, S.R., J.C. Chang, J.X. Zhang, S.B. Bloom, W.D. Goode, and K. Keith,

1995: HGSYSTEM/UF6 −A model for assessing the atmospheric transport and

diffusion of accidental releases of UF6. American Nuclear Society 5th Topical

Meeting on Emergency Preparedness and Response, 18-21 April 1995, Savannah,

GA.

63. Hanna, S.R., J.C. Chang, and J.X. Zhang, 1995: Modifications to HGSYSTEM to

account for UF6 chemistry and thermodynamics. AIChE International Conference

and Workshop on Modeling and Mitigating the Consequences of Accidental

Releases of Hazardous Materials, 26-29 September 1995, New Orleans, LA.

64. Yeh, S.C., T. Chico, S.R. Hanna, and J.C. Chang, 1993: Dense gas modeling

review and its application in the SCAQMD. 86th A&WMA Annual Meeting and

Exhibition, 13-18 June 1993, Denver, CO.

65. Chang, J.C. and S.R. Hanna, 1991; Evaluation of HPDM-URBAN using the

Indianapolis database. 7th Joint Conference on Application of Air Pollution

Meteorology with Air and Waste Management Association, New Orleans, LA.

66. Hanna, S.R. and J.C. Chang, 1991: SIGPRO--A meteorological preprocessor for

dispersion model applications to stack plumes in urban areas. 7th Joint Conference

on Application of Air Pollution Meteorology with Air and Waste Management

Association, New Orleans, LA.

67. Chang, J.C. and S.R. Hanna, 1990: Introduction to the urban Hybrid Plume

Dispersion Model system (HPDMSYS-urban). Computer Techniques in

Environmental Studies III, ed. P. Zannetti, Computational Mechanics Pub.,

Springer Verlag, 33-43.

68. Hanna, S.R., and J.C. Chang, 1990: Revision of the Hybrid Plume Dispersion

Model (HPDM) for Application to Urban Areas. 18th NATO/CCMS International

Technical Meeting on Air Pollution Modeling and Its Application, 13-17 May

1990, Vancouver, British Columbia, Canada.

Documents

JOSEPH C. CHANG RAND CORPORATION 1200 …...Page 1 JOSEPH C. CHANG, Ph.D. JOSEPH C. CHANG, Ph.D. RAND CORPORATION 1200 SOUTH HAYES ST, ARLINGTON, VA 22202 [email protected] (703)413-1100,