Privacy, Security, Notices

NOTE:
TSDIS will provide support for registered TSDIS Science Users (TSUs) only. TSU's may contact tsdis@tsdis.gsfc.nasa.gov with questions about the TSDIS software.

If you are not a TSU (or working with a TSU), please use the software at your own risk and contact the Goddard DAAC if you have any questions about TSDIS software.

TSDIS Science Algorithm Toolkit

To help the TSDIS Science Users (TSUs) develop the TRMM algorithms, TSDIS has provided the TSDIS Science Algorithm Toolkit. The purpose of the toolkit is two-fold. First, the toolkit provides a library of commonly used routines, constants, and macros, and, secondly, it allow seamless integration of TRMM algorithms into the TSDIS environment.

In developing algorithms for TSDIS, the TSUs must interact with HDF files for TSDIS standard products. The toolkit provides routines for reading and writing data to and from the HDF files; routines are provide for Level 1-3 products and for both satellite and GV. Each of the routines in the toolkit are callable in either C or FORTRAN. The toolkit also includes routines for reading land/sea data and topographical data. The routines provided in the toolkit can be divided into the following categories:

• File Access (e.g., open/close routines)
• Data Access (e.g., read/write routines)
• Metadata Access (e.g., reading and writing metadata elements)
• Ancillary Data Access (e.g., land/sea or topographical data access)
• Error Reporting Utilities.

For more information about the TSDIS Toolkit or to download the toolkit, please see the TSDIS Toolkit Homepage.

TSDIS Browse Viewer

The TSDIS Browse Viewer is a GUI application that provides the means to display the TSDIS produced browse images. The browse viewer is capable of displaying Level 1-3 of Satellite and GV browse images. The images are subsampled before they are displayed on the users terminal, but the browse viewer includes the option of zooming the images to full resolution. The browse viewer application provides the following functionality:

• Display Level 1-3 of Satellite and GV Browse Images
• Turn On/Off Continental Outlines
• Turn On/Off Latitude/Longitude Grids
• Turn On/Off GV Sources
• Turn On/Off Time Indicators
• Zooming the Browse Image
• View Core/Product Specific/Browse Metadata
• Change the Overlay Colors
• Change the Grid Resolution
• Save the Browse Images in either HDF or PostScript Format.

In addition to the browse images, the Viewer will display the associated color bar (including scale) and the current cursor position in latitude/longitude coordinates (if appropriate).

Screen Shot of the Browse Viewer Displaying PR L1C Synthetic Data

Requirements:

• IDL (either development or runtime version) - required Version 5.0
• 2 MB Diskspace
• Memory will depend on image size.
• Platform: UNIX (with IDL)

The current release of the Browse Viewer is Version 1.8.

Download a copy of the TSDIS Browse Viewer.

TSDIS Orbit Viewer

For more information about the TSDIS Orbit Viewer or to download the viewer, please see the TSDIS Orbit Viewer Homepage.

VIRS L1B Radiance Converter

The 1B01 Calibration software creates an alternative VIRS L1B product. It converts the 1B01 radiances to percent albedo for visible channels and to brightness temperatures for thermal channels. The output has the same HDF format as the 1B01 product and all 1B01 parameters except radiances are carried over.

The software is written in c. The TSDIS toolkit and a few HDF routines are used and included in this software package.

The VIRS L1B converter can be obtained using the TSDIS anonymous FTP site:

UNIX> cd ~
UNIX> ftp ftp-tsdis.gsfc.nasa.gov

user: anonymous
password: enter your e-mail address

FTP> cd pub/convertvirs
FTP> mget 1B01CALTB.tar
FTP> quit

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