Visualization, Exploration, and Model Comparison of NASA Air Quality Remote Sensing data via Giovanni Ana I. Prados, Gregory Leptoukh, Arun Gopalan, and.

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Presentation transcript:

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.

Giovanni at your Finger Tips Giovanni at your Finger Tips  Only a Web browser is needed. 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 4 Satellite data Surface monitor data Model data Giovanni Visualization: maps, curtain plots Data Analysis: time series, scatter plots, correlation plots StudentsPublic Policy Makers Scientists, air quality forecasters & other professionals

Aerosol from MODIS and GOCART model Particulate Matter (PM 2.5) from AIRNow Ozone Hole from OMI Aerosol from GOCART model ppmv Carbon Monoxide from AIRS Water Vapor from AIRS MODIS vs SeaWiFS Chlorophyll Giovanni Instance s CloudSat HIRDLS MLS OMI TRMM SeaWiFS AMSR-E HALO E TOMS Models Parasol CALIOP Data Inputs MODIS AIRS MISR and more… Giovanni Tools

Sensitive in the Boundary layer Qualitative agreement with high NO x regions (i.e urban areas) OMI Tropospheric NO 2 Column

MODIS Aerosol Optical Depth At least two daily observations - Terra and Aqua At least two daily observations - Terra and Aqua Sensitive to Boundary Layer Industrial, smoke & dust aerosols Sensitive to Boundary Layer Industrial, smoke & dust aerosols Well validated over landWell validated over land Fine mode fractionFine mode fraction

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

Giovanni AIRNow PM 2.5 Gridded Data Giovanni PM 2.5 map Data from EPA AIRNow. Acquired from DataFed via WCS. Giovanni PM 2.5 Map (ug/m 3 ) AIRNow PM 2.5 Air Quality Index Map

July 31 st, 2007 AIRNow PM 2.5 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-Vis

NASA Gocart Model Particle Speciation NASA Gocart Model Particle Speciation California and Southwestern US Eastern US Global chemical transport model with gas phase and aerosol chemistry Global chemical transport model with gas phase and aerosol chemistry Daily and Monthly data at 2x2.5 degree resolution Daily and Monthly data at 2x2.5 degree resolution Giovanni allows colocation with satellite and EPA AIRNow data Giovanni allows colocation with satellite and EPA AIRNow data Source attribution for pollution events Source attribution for pollution events Sea salt Organic Carbon Dust Black carbon Sulfate

NASA GOCART Model Particle Speciation Black Carbon Sulfate Organic Carbon Dust Dust

13 Examples of Giovanni capabilities for exploration and visualization of Global and US Air Quality

Air Pollution over China: MODIS AOD via Giovanni 14 July 4 th – August 4 th, 2008 July 4 th – August 4 th, 2008 August 5 th – August 25 th, 2008 August 5 th – August 25 th, 2008 Beijing Summer 2007 Beijing Summer 2008

PM 2.5, MODIS and OMI Views of California Fires EPA AIRNow PM 2.5 (ug/m 3 ) OMI UV Aerosol Index Level-3 MODIS AOD Level-3 MODIS AOD Oct. 24 th Oct. 25 th

Aerosol Pollution over the Eastern US: haze or clouds ? MODIS Terra True Color imagery 16

Aerosol Pollution over the Eastern US? Mixture of Haze and cloud over the Northeast 17

Haze over the Eastern US: Surface monitor and satellite data – July 7 th, 2006 Moderate PM2.5 Smoke 18 MODIS AOD OMI Aerosol Index AIRNow PM2.5

Monitor-Satellite Comparisons June 15- July 15 th, Satellite data is a total column --- not necessarily correlated with PM2.5 concentrations MODIS/PM2.5 correlation MODIS/PM2.5 time series

Aerosol Pollution on July 7 th : industrial (sulfate) or smoke ? Gocart Model July 7 th – relatively high organic and black carbon over eastern US 20 Organic Carbon Black carbon Sulfate

Aerosol Pollution over the Eastern: Gocart Model data via Giovanni 21 Organic Carbon Black carbon Sulfate Organic Carbon Sulfate

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 22

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 23

Backup slides 24

Giovanni Air Quality Tools and Datasets Available Science Data Sets PM 2.5 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 NO 2 Tropospheric column (0.25x0.25 degree) Gocart Model data – AOD speciation (2x2.5 degree) AIRS CO, methane Useful Tools for Air Quality Applications AOD/ PM 2.5 scatter plots, correlation maps, time series and difference plots AOD and PM 2.5 loops for examining long range transport of aerosols

Texas North-Central US Southeastern US Sea salt Organic Carbon Dust Black carbon Sulfate NASA GOCART Model Particle Speciation NASA GOCART Model Particle Speciation