Solar radiation enters the Earth's atmosphere with a portion being scattered by clouds and aerosols.

Processing, archiving and distributing Earth science data
at the NASA Langley Research Center

Atmospheric Science User Forum

The ASDC would like to bring your attention to the Atmospheric Science User Forum. The purpose of this forum is to improve user service, quality, and efficiency of NASA atmospheric science data. The forum intends to provide a quick and easy way to facilitate scientific discussion among scientists and data users. All are welcome to use this forum, simply create an Earthdata Login account. Directions for using the forum are provided on the homepage.


Toolsets for Airborne Data

The Toolsets for Airborne Data (TAD), developed at the Atmospheric Science Data Center (ASDC) at NASA Langley Research Center (LaRC) to promote the airborne data use, has added additional data sets! Now available is the entire NASA Deriving Information on Surface Conditions from COlumn and VERtically Resolved Observations Relevant to Air Quality (DISCOVER-AQ) Campaign including Maryland, Texas, California, and Colorado. To order and download the aircraft data sets you can access TAD at:


The Power of Particles

This plot shows smoke in the atmosphere before and during the deadly tornado outbreak of April 27, 2011. Thin blue lines trace the flow of smoke from the Yucatán towards the southeastern United States, where black dots indicate clusters of violent EF4 and EF5 tornadoes. Blue circles show where the aerosols were first observed over the ocean on April 27; the color scale on the right side indicates aerosol concentrations as particles were dispersed through the atmosphere. Fires are shown as light grey dots. The line of small black dots running from Mexico to Mississippi reveals the path of the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite as it passed over the area collecting smoke plume heights. (Courtesy P. Saide) 

For details see: "The Power of Particles" at Earthdata.

The Blue Marble 43 Years Later

Here is a side-by-side comparison of views of our planet Earth taken from two different vantage points over more than four decades apart. The iconic "Blue Marble" view on the left was taken 43 years ago on December 7, 1972 from Apollo 17 on its way to the Moon. The view on the right is from Lagrangian Point L1, located approximately one million miles away from earth (about four times farther than the moon) and was provided by the Earth Polychromatic Imaging Camera (EPIC) sensor affixed to the Deep Space Climate Observatory (DSCOVR).


MOPITT Subsetter

A new and improved version of the ASDC MOPITT Search and Subset Web Application has been released. New features include:

  • Versions 6 and 7 are now available for search and subsetting
  • Subset output files for Versions 6 and7 data is now available in both HDF5 and netCDF4 formats
  • Login is no longer required to search and subset, only when placing an order for data
  • Previous subset and selections made on all pages are now saved for your convenience

Access the  MOPITT Search and Subset Tool


RSS Feeds - news, announcements, maintenance.

MOPITT V6 & V7 Processing Error

Friday, March 24, 2017

Due to an error in the reported PMC (pressure modulated cell) pressure following the February 2016 calibration activity, it was necessary to reprocess and redeliver MOPITT V6 and V7 data.

TES Instrument Operational Status

Sunday, February 26, 2017

MOPITT Version 5 Product Conclusion

Wednesday, January 18, 2017

Processing and deliveries of the MOPITT Version 5 products concluded at the end of 2016. Users of V5 products are encouraged to instead begin using the V7 product.

CALIPSO GMAO Version Bump Release Notification

Monday, December 19, 2016

A number of Version 3 CALIPSO science data products rely on the GEOS 5 FP-IT meteorological data stream of near-real-time assimilation products provided by NASA’s Global Modeling and Assimilation Office (GMAO).