Earth  ID: 2998

MODIS Data May Aid EPA Air Quality Predictions (Wide)

This visualization shows how MODIS data from NASA's Terra and Aqua spacecraft may be able to help EPA in producing air quality index forecasts.

Currently, most air quality forecasts are generated from ground based measuring stations; however, these stations generally only exist in heavily populated areas. MODIS data may help EPA provide air quality forcasts over much wider areas and with higher accuracy. In this visualization, the EPA air quality data shows as the thin colored boxes sticking out from the surface. The MODIS data is represented by the colored overlay. An event that began over the northwestern US in September 2003 is shown propagating across the US and into the Midwest. Notice that the movement of the air mass is evident only from the MODIS data.

This version of the animation shows a narrow view of the US. This animation was inspired by a similar animation created at the Langley Research Center.

Visualization Credits

Greg Shirah (NASA/GSFC): Lead Animator
Lori Perkins (NASA/GSFC): Animator
Lawrence Friedl (NASA/HQ): Scientist
Please give credit for this item to:
NASA/Goddard Space Flight Center Scientific Visualization Studio

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Data Used:
Air Quality (EPA PM25_1HR_airnow_merged)
Database - EPA - 2003/09/01 - 2003/09/15
Terra and Aqua/MODIS/MODIS 04 Aerosol Optical Depth
2004/09/01 - 2004/09/15
Note: While we identify the data sets used in these visualizations, we do not store any further details nor the data sets themselves on our site.

This item is part of this series:
Air Quality

GCMD >> Earth Science >> Atmosphere >> Air Quality
SVS >> For Educators
SVS >> Atmospheric Circulation
SVS >> Pollutants >> Concentration
SVS >> Atmospheric Science
SVS >> Pollutants >> Distribution
SVS >> Pollutants >> Particulates
NASA Science >> Earth

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version