EOSDIS Data Sampler #3 - TMI Monthly Precipitation Estimate Product

Top banner for every page of EOSDIS data sampler number 3

Home -- ENSO Cycle -- ENSO Effects -- Missions -- Data -- Tools -- Site Map

Data Provided -- Sample Information -- How To Order -- Web Links

TRMM Instrument Data:
TRMM TMI Monthly Precipitation Estimate (MPE) Product

Monthly Precipitation Estimate
(January 1998 - El Niño)

Monthly Precipitation Estimate
(December 1998 - La Niña)

Monthly Composite Comparison Images

**TRMM TMI Gridded Data Provided**
Data Product	Local Granule Names	File Name on This CD
TMI Gridded Data Products: 3B43: Monthly 1 x 1 Degree TRMM and Other Sources Rainfall Product	3B43.980101.5.HDF (El Niño) 3B43.981201.5.HDF (La Niña)	(Link to Catalog) 3B43.980101.5.HDF.Z (File must be "uncompressed" to be used.) (El Niño) 3B43.981201.5.HDF.Z (File must be "uncompressed" to be used.) (La Niña)

Sample Information

Top of Page

The TRMM Microwave Imager (TMI) detects the rate, type, distribution and variability of surface rainfall that occurs in tropical regions. The orbit of the TRMM Observatory has an inclination of 35 degrees. As a result, the TMI instrument observes rainfall activity where it occurs the most: between 35 degrees South latitude and 35 degrees North latitude. The TRMM orbit causes the local overpass time to drift over the entire 24 hours of a day approximately once each month, enabling observation of regional diurnal rainfall.

The provided products show the Monthly Precipitation (rainrate) Estimates that result from seasonal and either El Niño- or La Niña-influenced storm/weather conditions. The El Niño sample shows higher than normal rainfall over the warmer waters of the equatorial Pacific Ocean, but the La Niña sample shows considerable rainfall over Ceylon, Indonesia, the Phillipines, and Australia.

"TRMM satellite products, Version 5, represent the second publicly-released dataset from the TRMM mission. They are NOT perfect, but were judged good enough to be of value to the general user community. Some products have known deficiencies, while others may not yet have been tested as thoroughly as one would wish. In order to effectively communicate the known problems at the time of the initial data release (Sept. 1, 1998), as well as future problems that may still be uncovered, the TRMM project will make this information available via the TRMM Web site at http://trmm.gsfc.nasa.gov/data_dir/ProductStatus.html."

HDF-EOS Metadata Files

This information came from 3B43.980101.5.HDF.

File Attributes
Attribute Name Attribute Value (or Link)
Version Descriptor NCSA HDF Version 4.0 Release 2, July 19, 1966

Core Metadata INVENTORYMETADATA

Archive Metadata ARCHIVEMETADATA

**File Attributes**
Attribute Name	Attribute Value (or Link)
Version Descriptor	NCSA HDF Version 4.0 Release 2, July 19, 1966
Core Metadata	INVENTORYMETADATA
Archive Metadata	ARCHIVEMETADATA

This information came from 3B43.981201.5.HDF.

**File Attributes**
Attribute Name	Attribute Value (or Link)
Version Descriptor	NCSA HDF Version 4.0 Release 2, July 19, 1966
Core Metadata	INVENTORYMETADATA
Archive Metadata	ARCHIVEMETADATA

How To Order

Top of Page

These and other TMI granules can be ordered using:

Current and archive browse images for TRMM rainfall at the TRMM Web Site at GSFC: http://trmm.gsfc.nasa.gov/images_dir/images.html. The same location also links to pages that show annual and monthly composite images (generated from the daily granules).
TRMM TMI Gridded Data products may be searched for and ordered from the GES DAAC: http://lake.nascom.nasa.gov/data/dataset/TRMM/01_Data_Products/02_Gridded/index.html. Users need to register for access to the data.
TRMM TMI L1A, "Brightness Temperature" and "Wentz Ocean Products" data may be ordered from the EDG, in a manner similar to the example given in the EDG Step-by-step Instructions. (Go to the Tools page.)

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

Local TRMM Links

Top of Page

Tropical Rainfall Measuring Mission (TRMM)
NASA's TRMM instrument data products featured on this CD-ROM
Chart (GIF image) showing spectral bandwidth for each TRMM instrument
NASA's TRMM LIS instrument data products featured on this CD-ROM
NASA's TRMM TMI SST instrument data products featured on this CD-ROM
NASA's TRMM VIRS instrument data products featured on this CD-ROM

Disclaimer: NASA offers these suggested sites for additional information regarding the TRMM TMI. Web access is required. Link existence and contents are not under the control of the EOSDIS Science Operations Office.

TRIMM TMI Web Sites

Top of Page

TRMM 3-Year Anniversary: http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=4498
TRMM Mission Overview: http://trmm.gsfc.nasa.gov/overview_dir/background.html
TRMM Rainfall Measurements: http://trmm.gsfc.nasa.gov/images_dir/avg_rainrate.html
Level 3 Selected Monthly Rainfall Data Set: http://www.eorc.nasda.go.jp/TRMM/imgdt/L3_data/index.htm
TRMM for El Niño and La Niña Study: http://daac.gsfc.nasa.gov/CAMPAIGN_DOCS/hydrology/TDST_SCI/trmm_ENSO.html
Severe Weather Hits U. S. West Coast: http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=10854
TRMM: Covers El Niño/La Niña Event Over the Pacific Using Monthly Average Rainfall Measurements (visualizations produced by the NASA/Goddard Space Flight Center Scientific Visualization Studio): http://SVS.gsfc.nasa.gov/vis/a000000/a002000/a002025/index.html

Top of Page