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

MISR Where on Earth…?

Are you ready for a challenge? Become a geographical detective and solve the latest mystery quiz from NASA’s MISR (Multi-angle Imaging SpectroRadiometer) instrument onboard the Terra satellite. Prize submissions for perfect scores accepted until Wednesday, November 23, at 11:00 AM PST. Happy sleuthing!



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.


Hurricane Matthew over Haiti seen by NASA's MISR

On the morning of October 4, 2016, Hurricane Matthew passed over the island nation of Haiti. A Category 4 storm, it made landfall around 7 a.m. local time (5 a.m. PDT/8 a.m. EDT) with sustained winds over 145 mph. This is the strongest hurricane to hit Haiti in over 50 years.

These data were acquired during Terra orbit 89345. Other MISR data are available through the NASA Langley Research Center.


MOPITT Subsetter

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

  • Versions 5, 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

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).


MISR L3 Aerosol Optical Depth 2013

Updated MISR Level 3 Imagery tool now contains data for 2009 - 2015. The Level 3 products are derived from averaging select Level 1 and Level 2 parameters over daily, monthly, seasonal and annual time periods. All MISR data products can also be ordered through the MISR Order and Customization Tool.

Level 3 Imagery

MISR Order and Customization Tool

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, is now available. This beta-release is an intuitive user interface for variable selection across different airborne field studies and includes features to create merge files based on a user’s choice of time base.  Prior to accessing the TAD Web Application ( for the first time


CATS Instrument

The Cloud-Aerosol Transport System (CATS) is a lidar remote sensing payload utilizing ISS as an affordable Earth Science observing platform. CATS provides in-space demonstration of technologies for future satellite missions while demonstrating build-to-cost project development with streamlined management structure. 

For more information, please see the CATS homepage or the attached presentation (PPT).

Longwave data visualization.

On NASA's Suomi NPP satellite, the newest version of the Clouds and the Earth's Radiant Energy System (CERES) instrument is scanning Earth, helping to assure availability of measurements of the energy leaving the Earth-atmosphere system.  The CERES results help scientists to determine the Earth's energy balance, providing a long-term record of this crucial environmental parameter that will be consistent with those of its predecessors.



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).