EOSDIS Data Sampler #3 - MSU_Data

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TOVS Pathfinder: MSU Instrument Data

(Global Hydrology and Climate Center (GHCC))

**MSU Data Provided**
Data Products on This CD	EDG Granule ID	Dataset Name on This CD
MSU CH2 MONTHLY TEMPERATURE ANOMALY GRIDPOINT (2.5 DEG) Granule	t2ltmonamg.1998dx	(Link to Catalog) tltmonamg.1998_5.0

The Microwave Sounding Unit (MSU) instrument provides calibrated, long-term observations from which an enhanced knowledge of global dynamics and processes occurring in the lower atmosphere can be derived. This instrument yields observations of atmospheric properties (e.g., water vapor, temperature, and cloud liquid water). The instrument has made major contributions to understanding the global Earth system, including interactions among land, ocean, and atmospheric processes.

Sample Information

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The samples were downloaded (cut and paste) from a database site (see below).

This is sample data for the year 1998 (January to December). This MSU data granule covers the globe for all 12 months of the year. The files placed on the server after June 1, 2002, have an extension of "5.0". These include all corrections (nonlinear diurnal adjustment for lower troposphere and mid troposphere, orbit decay, instrument-body effect, etc.)

The data sample includes monthly gridded anomalies of product "lower troposphere monthly anomaly gridpoint (2.5°) temperature data" for 1998. Note:

The data is in integer format and should be multiplied by 0.01.

Care should be exercised when studying areas of high terrain (Tibetian Plateau, Antarctica, Greenland, and the narrow spine of the Andes).

The data array for each month in the file is 144 X 72, for a 2.5-degree grid.

The center of the grid boxes is 1.25° different from integer multiples of 2.5.

The value "-9999" is for missing data.

Each month in the granule can be read using the following Fortran code:

                                                                   
     CHARACTER *12,ACHA                                                 
     READ ( ,100) ISAT,IYR,IMON,ACHA                                    
     READ ( ,101) ((NDATA(IX,IY),IX=1,144),IY=1,72)                     
 100 FORMAT (3I12,A12)                                                  
 101 FORMAT (16I5)                                                      
                                                                        
     ISAT:  CODE NUMBER FOR THE SATELLITES USED                         
     IYR :  YEAR 
     IMON:  MONTH (1 TO 12), OR PENTAD (1 TO 73)                        
     ACHA:  CHARACTER STRING OF CHANNEL NAME (12 CHARACTERS)            
     NDATA: ANOMALIES IN HUNDREDTHS OF DEGREES

How To Order

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These and other granules can be obtained using the:

Dataset name (MSU Ch2 Day/Month Temp Anomalies and Annual Cycle, LIMB90 VER-D) and dates of interest, from the EOS Data Gateway (EDG) search-and-order system at http://eos.nasa.gov/imswelcome. The EDG granule name for the dataset used in this CD-ROM is t2ltmonamg.1998dx.

GHCC Web server "Index of /data/msu/t2lt" at http://vortex.nsstc.uah.edu/data/msu/t2lt/. The local granule name for the dataset used in this CD-ROM is tltmonamg.1998_5.0.

More general information on how to find and order Earth-observing instrument data is provided on this CD-ROM.

Local Links

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