Visualization, Exploration, and Visualization, Exploration, and Model Comparison of NASA Air Model Comparison of NASA Air Quality Remote Sensing data Quality Remote Sensing data

via Giovanni via Giovanni

Ana I. Prados, Gregory Leptoukh, Arun Ana I. Prados, Gregory Leptoukh, Arun Gopalan, and Mian ChinGopalan, and Mian Chin

2008 CMAS Annual Conference 2008 CMAS Annual Conference

About GiovanniAbout Giovanni

• Giovanni is a Web-based application developed by the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC).

• Giovanni provides a simple and easy way to explore, visualize, analyze, and access vast amounts of Earth science remote sensing and model data.

http://giovanni.gsfc.nasa.gov/http://giovanni.gsfc.nasa.gov/

Giovanni at your Finger TipsGiovanni at your Finger Tips

Only a Web browser is Only a Web browser is needed.needed.

No need to learn data No need to learn data formats and programming.formats and programming.

No need to download large No need to download large amounts of data.amounts of data.

Customized data and analyses can be Customized data and analyses can be obtained with only a few mouse clicks.obtained with only a few mouse clicks.

Giovanni Air QualityGiovanni Air Quality

4

Satellite dataSatellite data

Surface monitor data Surface monitor data

Model dataModel data

GiovanniGiovanni

Visualization: maps, curtain plotsVisualization: maps, curtain plotsData Analysis: time series, Data Analysis: time series, scatter plots, correlation plotsscatter plots, correlation plots

StudentsStudentsPublicPublic

Policy Makers

Scientists, air quality forecasters & Scientists, air quality forecasters & other professionals other professionals

Aerosol from MODIS and GOCART modelAerosol from MODIS and GOCART modelParticulate Matter (PM 2.5) from AIRNow Particulate Matter (PM 2.5) from AIRNow

Ozone Hole from OMIOzone Hole from OMI

Aerosol from GOCART modelAerosol from GOCART model1010-6-6 ppmv ppmv

Carbon Monoxide from AIRSCarbon Monoxide from AIRS

Water Vapor from AIRSWater Vapor from AIRS MODIS vs SeaWiFS ChlorophyllMODIS vs SeaWiFS Chlorophyll

Giovanni Giovanni InstanceInstance

ss

CloudSat CloudSat

HIRDLSHIRDLS

MLSMLS

OMIOMI

TRMMTRMM

SeaWiFSSeaWiFS

AMSR-EAMSR-E

HALOHALOEE

TOMSTOMS

ModelsModels

ParasolParasol

CALIOPCALIOP

Data Data InputsInputs

MODISMODIS

AIRS AIRS

MISRMISR

and and more…more…

Giovanni ToolsGiovanni Tools

• Sensitive in the Boundary layer

• Qualitative agreement with high NOx regions (i.e urban areas)

OMI Tropospheric NOOMI Tropospheric NO22 Column Column

MODIS Aerosol Optical DepthMODIS Aerosol Optical Depth

• At least two daily At least two daily observations - Terra observations - Terra and Aquaand Aqua

• Sensitive to Sensitive to Boundary Layer Boundary Layer Industrial, smoke & Industrial, smoke & dust aerosols dust aerosols

•Well validated Well validated over landover land

•Fine mode fractionFine mode fraction

OMI UV Aerosol IndexOMI UV Aerosol Index

Mostly sensitive to Mostly sensitive to absorbing aerosols absorbing aerosols above the planetary above the planetary boundary layer (i.e boundary layer (i.e transported smoke transported smoke plumes)plumes)

Giovanni AIRNow PMGiovanni AIRNow PM2.52.5 Gridded Gridded DataData

• Giovanni PM2.5 map Data from EPA AIRNow. Acquired from DataFed via WCS.

Giovanni PMGiovanni PM2.52.5 Map (ug/m Map (ug/m33))

AIRNow PMAIRNow PM2.52.5 Air Quality Index Air Quality Index MapMap

July 31st, 2007 AIRNow PM2.5 map in

background

Vertical: Calipso Curtain Plot

Yellow: aerosol flag Blue: cloud flag

Most Giovanni data sets available in KML

(Google Earth, and other tools)

Vertical Distribution of Aerosols & 3D-VisVertical Distribution of Aerosols & 3D-Vis

NASA Gocart Model Particle SpeciationNASA Gocart Model Particle Speciation

California and Southwestern USCalifornia and Southwestern US Eastern USEastern US

• Global chemical transport model with gas phase and Global chemical transport model with gas phase and aerosol chemistryaerosol chemistry

• Daily and Monthly data at 2x2.5 degree resolutionDaily and Monthly data at 2x2.5 degree resolution

• Giovanni allows colocation with satellite and EPA Giovanni allows colocation with satellite and EPA AIRNow dataAIRNow data

• Source attribution for pollution eventsSource attribution for pollution events

Sea salt Sea salt Organic CarbonOrganic Carbon DustDust Black carbonBlack carbon SulfateSulfate

NASA GOCART Model Particle SpeciationNASA GOCART Model Particle Speciation

Black CarbonBlack CarbonSulfateSulfate

Organic Organic CarbonCarbon

DustDust

13

Examples of Giovanni Examples of Giovanni capabilities for exploration capabilities for exploration

and visualization of Global and and visualization of Global and US Air QualityUS Air Quality

Air Pollution over China: MODIS Air Pollution over China: MODIS AOD via GiovanniAOD via Giovanni

14

July 4July 4thth – August 4 – August 4thth, 2008, 2008 August 5August 5thth – August 25 – August 25thth, 2008, 2008

Beijing Summer 2007Beijing Summer 2007 Beijing Summer 2008Beijing Summer 2008

PM2.5, MODIS and OMI Views of California Fires

EPA AIRNow PMEPA AIRNow PM2.52.5(ug/m(ug/m33)) OMI UV Aerosol IndexOMI UV Aerosol Index Level-3 MODIS AODLevel-3 MODIS AOD

Oct. Oct. 2424thth

Oct. Oct. 2525thth

Aerosol Pollution over the Aerosol Pollution over the Eastern US: haze or clouds ?Eastern US: haze or clouds ?

MODIS Terra True Color imagery

16

Aerosol Pollution over the Eastern Aerosol Pollution over the Eastern US?US?

• Mixture of Haze and cloud over the Northeast

17

Haze over the Eastern US: Surface Haze over the Eastern US: Surface monitor and satellite data – July 7monitor and satellite data – July 7thth, , 2006 2006

Moderate PM2.5

Smoke18

MODIS AODMODIS AOD

OMI Aerosol IndexOMI Aerosol Index

AIRNow PM2.5AIRNow PM2.5

Monitor-Satellite ComparisonsMonitor-Satellite ComparisonsJune 15- July 15June 15- July 15thth, 2006, 2006

19Satellite data is a total column --- not necessarily

correlated with PM2.5 concentrations

MODIS/PM2.5 correlationMODIS/PM2.5 correlationMODIS/PM2.5 time seriesMODIS/PM2.5 time series

Aerosol Pollution on July 7Aerosol Pollution on July 7thth: : industrial (sulfate) or smoke ?industrial (sulfate) or smoke ?

Gocart Model

July 7th – relatively high organic and black carbon over eastern US

20Organic Carbon Organic Carbon Black carbonBlack carbon SulfateSulfate

Aerosol Pollution over the Eastern: Gocart Aerosol Pollution over the Eastern: Gocart Model data via GiovanniModel data via Giovanni

21

Organic Carbon Organic Carbon Black carbonBlack carbon SulfateSulfate

Organic CarbonOrganic Carbon

SulfateSulfate

Coming Soon to Coming Soon to Giovanni….Giovanni….

• HTAP Model Data• Meteorological and chemical

speciation data from models for examining long range transport of pollutants

• Comparisons among satellite, model, and in-situ air quality data

22

How can I learn more How can I learn more about NASA Earth Science about NASA Earth Science

data and Giovanni ??data and Giovanni ??

• AMS 2009 – 1 Day Giovanni workshop

• More workshops in 2009 on NASA Earth Science data sets and tools, including Giovanni

23

Backup slides

24

Giovanni Air Quality Tools and Giovanni Air Quality Tools and DatasetsDatasets

Available Science Data Sets • PM2.5 station data - Acquired at DataFed from EPA AIRNow and then

via WCS into Giovanni • MODIS TERRA and AQUA total and fine mode Aerosol Optical Depth • CALIOP Aerosol Feature Mask curtain plots• OMI UV Aerosol Index

• OMI NO2 Tropospheric column (0.25x0.25 degree)

• Gocart Model data – AOD speciation (2x2.5 degree)• AIRS CO, methane

Useful Tools for Air Quality Applications• AOD/ PM2.5 scatter plots, correlation maps, time series and

difference plots

• AOD and PM2.5 loops for examining long range transport of aerosols

TexasTexas

North-Central USNorth-Central US

Southeastern USSoutheastern US

Sea salt Sea salt Organic CarbonOrganic Carbon DustDust Black carbonBlack carbon

SulfateSulfate

NASA GOCART Model Particle SpeciationNASA GOCART Model Particle Speciation