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A-Train Data Depot

The A-Train Data Depot (ATDD) has been developed to process, archive, allow access to, visualize, analyze and correlate distributed atmospheric measurements from A-Train instruments.  The ATDD portal provides easy on-line data access and services for science, applications, and educational use so that users get exactly the data they want, and not large files of data which would take much time and effort by individuals to be co-registered and refined.


choi-wan snapshot from googleearth



On September 15, 2009, the A-Train formation happened to fly over the super-typhoon Choi-wan. Just one such event can yield enormous amounts of data of various science content and format from the diverse A-Train sensors.  Plotting quickly  retrievals like cloud profiles, cloud top temperatures, rain rates,  water vapor content, etc.,  for head-to-head previews, is the strength of the Giovanni  web tool. An example of the  tool output is shown on the left. Apart from these 2-dimensional plots, Giovanni provides KMZ (GoogleEarth) format of the vertical atmospheric profiles (far left). Thus, it is now possible to combine horizontal and vertical data layers in one three-dimensional object, and preview data from different geometrical aspects. The far left plate shows a snapshot from a GoogleEarth KMZ file where CloudSat profiles are pictured together with MODIS/Aqua true-color image, and AMSR-E rain rate.

(Download the KMZ). 











A-Train Data Depot: 


Latest News

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In two days, the area received 5-6 times the normal monthly rainfall for April

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HIRDLS is one of the four instruments on NASA’s Aura satellite.  HIRDLS data preservation will allow use of the data well beyond the duration of the Aura mission.
Nov 05, 2013 - GES DISC manages HIRDLS data preservation

Data preservation maintains the usability of data for future research and new scientists

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Aerosol Optical Depth over eastern China measured by MODIS-Aqua, averaged over the period October 18-19, 2013.  During this period, crisis levels of air pollution were reported in the northern city of Harbin.
Oct 25, 2013 - MODIS observes progressive development of air pollution crisis in China

Cold conditions in October led to extremely unhealthy air quality in northern cities

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According to NSF, EarthCube  will “greatly increase the productivity and capability of researchers and educators working at the frontiers of Earth system science.”
Oct 21, 2013 - Staff from the GES DISC participate in NSF EarthCube Workshop

Meeting held at George Mason University in Fairfax, Virginia

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A trans-Atlantic science bond: HIRDLS is a joint U.S. (National Center for Atmospheric Research) and UK (Oxford University) project.
Aug 09, 2013 - HIRDLS Version 007 data released to public

Final version of High Resolution Dynamic Limb Sounder data now available to researchers

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Last updated: May 01, 2013 02:02 PM ET