TES Level 2 Subsystem is a set of computer programs that performs functions complementary to those of the program summarized in the immediately preceding article. TES Level-2 data pertain to retrieved species (or temperature) profiles, and errors thereof. Geolocation, quality, and other data (e.g., surface characteristics for nadir observations) are also included. The subsystem processes gridded meteorological information and extracts parameters that can be interpolated to the appropriate latitude, longitude, and pressure level based on the date and time. Radiances are simulated using the aforementioned meteorological information for initial guesses, and spectroscopic-parameter tables are generated. At each step of the retrieval, a nonlinear-least-squares-solving routine is run over multiple iterations, retrieving a subset of atmospheric constituents, and error analysis is performed. Scientific TES Level-2 data products are written in a format known as Hierarchical Data Format Earth Observing System 5 (HDF-EOS 5) for public distribution.

This software was written by Sassaneh Poosti, Sirvard Akopyan, Regina Sakurai, Hyejung Yun, Pranjit Saha, Irina Strickland, Kevin Croft, Weldon Smith, Rodney Hoffman, John Koffend, Gerard Benenyan, Hari Nair, Edwin Sarkissian, James McDuffie, Ruth Monarrez, David Ho, Benny Chan, and Michael Lampel of Caltech for NASA's Jet Propulsion Laboratory. For further information, access the Technical Support Package (TSP) free on-line at www.techbriefs.com/tsp under the Software category.

This software is available for commercial licensing. Please contact Karina Edmonds of the California Institute of Technology at (626) 395-2322. Refer to NPO-35212.

This Brief includes a Technical Support Package (TSP).
Processing TES Level-2 Data

(reference NPO-35212) is currently available for download from the TSP library.

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This article first appeared in the September, 2006 issue of NASA Tech Briefs Magazine.

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