Welcome to SESDA

Welcome to the Space and Earth Science Data Analysis (SESDA III) home page. SESDA III is the premier space and Earth science contract at NASA’s Goddard Space Flight Center, held by ADNET Systems, Inc. ADNET, Wyle and Telophase form TEAM ADNET.

Approximately 300 scientists and engineers provide vital support to NASA under the SESDA III contract. Watch this site for exciting SESDA III news, events and job opportunities.

Read more about SESDA and ADNET Systems

Record-Setting Disk-to-Disk Network Data Transfer by HECN work at SC14

December 15, 2014

96+ Gbps HECN transfer graph
SESDA’s High End Computer Networking (HECN) Team worked with the Mid-Atlantic Crossroads (MAX), Energy Sciences Network (ESnet), and StarLight network R&D partners to establish a 100 GigE wide area network (WAN) path between NASA Goddard Space Flight Center in Maryland and the SuperComputing 2014 (SC14) event in New Orleans (for details of SC14 see: The HECN team built the high performance RAID servers that were used to achieve a record of 96+ Gigabits per second (Gbps) disk-to-disk network file data transfer rate, utilizing 8 cores and 8 network streams to transfer 2 Terabytes of data. The accompanying figure shows some of the data transfer results during the demonstrations.

A New Tool for Interactive Comparative Analysis of Aerosol Data

December 10, 2014

APSS Statistical Explorer: Interactive exploration of uncertainty in spaceborne aerosol retrievals

Critical data on atmospheric aerosols is constantly being collected from space (by instruments like MODIS, OMI, and VIIRS) as well as from ground stations like AERONET: the Aerosol Robotic Network. A system called “MAPSS” (Multi-sensor Aerosol Products Sampling System) enables scientists to perform comparative analyses of collocated spaceborne and ground-based observations. However, exploring and reporting numerous statistical results generated by MAPSS analysis over a broad range of sensors and hundreds of AERONET stations is a very complex problem.

With this challenge in mind, SESDA 3 scientists and engineers helped to develop an interactive MAPSS Statistical Explorer web tool. All aerosol ground stations are displayed on a Google map. By clicking a given site, a panel pops up showing the values of an uncertainty parameter for all sensors compared to AERONET, with many different options for comparisons. In addition to the statistics presented in the panel, a user can also obtain scatter plots, time-series plots, or relevant data files, enabling further exploration of uncertainties.
The MAPSS Statistical Explorer can be accessed at For additional information about the MAPSS system and data, please refer to the MAPSS ( and AeroStat ( portals in Giovanni.

Intranet Portal

Intranet Login