Jeff Stith, Andrew Gettelman

Jeff Stith, Andrew Gettelman

NCAR is sponsored by the National Science Foundation

Southern Ocean Studies: NCAR Measurement capabilities and integrating the measurements with the Community

Earth System Model (CESM)

NSF C130: heavy-lift research aircraft

• 10 + Hours Endurance• Typical payload 15,000 lb

• Range 3100nmi• Altitude 26,000 ft

Gulfstream V: A Platform for Global Scale Measurements

• Long-Range (up to ~5000 n miles )

• High Altitude (up to 51,000 feet)• Up to ~6000 lb payload• Up to 12 hours endurance (10 hours typical)• Six under-wing hardpoints• Up and Down (2) Co-Aligned 20 inch optical

viewports• Ample inlets and fuselage hard points

HIAPER Pole-to-Pole (HIPPO) : Global scale research in different seasons

Flight Hours:86 (January 2009)90 (October 2009)85 (March 2010)97 (June 2011)103 (August 2011)

Total Flights: 64Distance : 171,000 milesVertical Profiles: 461

3VCPI

Instrument Issues

2DC (fast) No small particles

2DP Only C130-possible revision

3VCPI (2DS+CPI) Effects of tube still under study

SID II-H Small sample volume. Performance under study, probably best for ci

CDP Small sample volume. Limited to droplets/small ice

FSSP (un-shrouded) Similar to CDP

UHSAS Continuous accumulation mode aerosols

CVI, Aerosol Mass Spec, small particle mobility analysis ,

Special request

HOLODEC II Promising in development

HIAPER Cloud Radar

Instrument Description

HIAPER Cloud radar W-band polarmetric radar (scanning)

HSRL High Spectral Resolution calibrated aerosol lidar (extinction, cross section, depolarization)

Wyoming radar and lidar Cloud radar and lidar for C130/ King Air

Dropsondes Both aircraft

Ground-based S-Pol, Sounding facilities, surface flux, coming: water vapor DIAL

Combination of Radar/lidar with in-situ measurements is very powerful!

Airborne instruments

www.eol.ucar.edu/instrumentation www.eol.ucar.edu/deployment/request-info

6

Single particle

Holodec II

1 particle in beam at a time

20 cc

30-100 m

Reconstructed image

HOLODEC II, a collaborative effort between Michigan Technological University and NCAR/EOL

Portions from: Fugal, Beals, Schlenczek, Shaw, Spuler, and Stith, 2012: Comparisons of size distributions of ice particles measured with imaging and holographic airborne instruments. International Conference on Clouds and Precipitation, Leipzig, 2012.

12/4/2013

Beals et al, (2012)Fugal et al., (2012)

New Measurements with Holodec II

CESM Southern Ocean HIPPO –domain results overlaid with in situ measurements

Preliminary Results

In situ measurements “fit” into CESM model grid box

Preliminary Results