Transcript Visualization, Exploration, and Model Comparison of NASA Air Quality Remote Sensing data via Giovanni Ana I.

Visualization, Exploration, and Model
Comparison of NASA Air Quality
Remote Sensing data
via Giovanni
Ana I. Prados, Gregory Leptoukh, Arun
Gopalan, and Mian Chin
2008 CMAS Annual Conference
About 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/
Giovanni at your Finger Tips
 Only a Web browser is
needed.
 No need to learn data
formats and programming.
 No need to download large
amounts of data.
 Customized data and analyses can be
obtained with only a few mouse clicks.
Giovanni Air Quality
Satellite data
Surface monitor data
Model data
Students
Public
Giovanni
Visualization: maps, curtain plots
Data Analysis: time series,
scatter plots, correlation plots
Scientists, air quality forecasters &
other professionals
Policy Makers
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Giovanni Tools
Data
Inputs
10-6 ppmv
Aerosol from GOCART model
AIRS
MODIS
MISR
Parasol
CloudSat
Particulate Matter (PM 2.5) from AIRNow
Aerosol from MODIS and GOCART model
Water Vapor from AIRS
MODIS vs SeaWiFS Chlorophyll
Carbon Monoxide from AIRS
Giovanni
Instance
s
CALIOP
TOMS
OMI
MLS
HIRDLS
HALO
E
TRMM
AMSR-E
SeaWiFS
Models
and
more…
Ozone Hole from OMI
OMI Tropospheric NO2 Column
• Sensitive in the
Boundary layer
• Qualitative
agreement with high
NOx regions (i.e
urban areas)
MODIS Aerosol Optical Depth
• At least two daily
observations - Terra
and Aqua
• Sensitive to
Boundary Layer
Industrial, smoke &
dust aerosols
•Well validated over
land
•Fine mode fraction
OMI UV Aerosol Index
Mostly sensitive to
absorbing aerosols
above the planetary
boundary layer (i.e
transported smoke
plumes)
Giovanni AIRNow PM2.5 Gridded Data
Giovanni PM2.5 Map (ug/m3)
• Giovanni PM2.5 map
Data from EPA AIRNow.
Acquired from DataFed
via WCS.
AIRNow PM2.5 Air Quality Index
Map
Vertical Distribution of Aerosols & 3D-Vis
Most Giovanni data sets
available in KML
(Google Earth, and other
tools)
July 31st, 2007
AIRNow PM2.5 map
in background
Vertical: Calipso
Curtain Plot
Yellow: aerosol flag
Blue: cloud flag
NASA Gocart Model Particle Speciation
• Global chemical transport model with gas phase and
aerosol chemistry
• Daily and Monthly data at 2x2.5 degree resolution
• Giovanni allows colocation with satellite and EPA
AIRNow data
• Source attribution for pollution events
California and Southwestern US
Sea salt
Organic Carbon
Dust
Eastern US
Black carbon
Sulfate
NASA GOCART Model Particle Speciation
Sulfate
Black Carbon
Organic
Carbon
Dust
Examples of Giovanni
capabilities for exploration and
visualization of Global and US
Air Quality
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Air Pollution over China: MODIS AOD
via Giovanni
July 4th – August 4th, 2008
Beijing Summer 2007
August 5th – August 25th, 2008
Beijing Summer 2008
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PM2.5, MODIS and OMI Views of California Fires
EPA AIRNow PM2.5(ug/m3) Level-3 MODIS AOD
Oct.
24th
Oct.
25th
OMI UV Aerosol Index
Aerosol Pollution over the Eastern
US: haze or clouds ?
MODIS Terra
True Color
imagery
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Aerosol Pollution over the Eastern US?
• Mixture of
Haze and
cloud over
the
Northeast
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Haze over the Eastern US: Surface monitor
and satellite data – July 7th, 2006
OMI Aerosol Index
AIRNow PM2.5
MODIS AOD
Moderate PM2.5
Smoke
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Monitor-Satellite Comparisons
June 15- July 15th, 2006
MODIS/PM2.5 correlation
MODIS/PM2.5 time series
Satellite data is a total column --- not necessarily correlated
with PM2.5 concentrations
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Aerosol Pollution on July 7th:
industrial (sulfate) or smoke ?
Gocart Model
July 7th –
relatively high
organic and
black carbon
over eastern
US
Organic Carbon
Black carbon
Sulfate
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Aerosol Pollution over the Eastern: Gocart
Model data via Giovanni
Sulfate
Organic Carbon
Black carbon
Sulfate
Organic Carbon
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Coming Soon to 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
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How can I learn more about
NASA Earth Science data and
Giovanni ??
• AMS 2009 – 1 Day Giovanni workshop
• More workshops in 2009 on NASA
Earth Science data sets and tools,
including Giovanni
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Backup slides
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Giovanni Air Quality Tools and Datasets
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
NASA GOCART Model Particle Speciation
North-Central US
Texas
Sea salt
Dust
Organic Carbon
Black carbon
Sulfate
Southeastern US