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Readme for TRMM Product 3B43 (V6)
Data Access for
TRMM and Other Data Precipitation Product 3B43: http://mirador.gsfc.nasa.gov/cgi-bin/mirador/presentNavigation.pl?tree=project&project=TRMM&dataGroup=Gridded&dataset=3B43:%20Monthly%200.25%20x%200.25%20degree%20merged%20TRMM%20and%20other%20sources%20estimates&version=006Contents of TRMM and Other Data Precipitation Product 3B43 This document provides basic information on 3B43, TRMM and Other Data Precipitation Product. The TRMM Multi-Satellite Precipitation Analysis (TMPA; computed at monthly intervals as 3B-43) combines the estimates generated by the TRMM and other satellites product (3B-42) and the CAMS global gridded rain gauge data, produced by NOAA's Climate Prediction Center and/or the global rain gauge product produced by the Global Precipitation Climatology Center (GPCC). The output is rainfall for 0.25x0.25 degree grid boxes for each month. For more details of the algorithm, go to http://trmm.gsfc.nasa.gov/3b43.html The data flow of 3B43 and the rest of the products are shown in Satellite Algorithm Flow Diagram. Data Characteristics
| TRMM 3B43 Characteristics | | Temporal Coverage | Start Date: 1998-01-01; Stop Date: - | | Geographic Coverage | Latitude: 50°S - 50°N; Longitude:180°W - 180°E | | Temporal Resolution | Monthly | | Horizontal Resolution | 0.25° x 0.25°; nlat = 400, nlon = 1440 | | Average File Size | Compressed: ~4.5 MB; Original: ~4.5 MB | | File Type | HDF | Data Format Structure Further information on the contents and structure of this product can be found in Volume 4 of the "File Specifications for PPS Products - Level 2 and Level 3." | Data Format Structure for 3B43 | | Name | Type | Record
Size
(byte) | Dim Size/
# of Records | Scaled
by | Range | Unit | Description | | ECS Core Metadata | Char Attribute | 10,000 | - | - | - | - | ECS Core Metadata | | PS Metadata | Char Attribute | 10,000 | - | - | - | - | Product Specific Metadata | | Grid Structure | Char Attribute | 5,000 | - | - | - | - | The specification of the grid geometry | | Precipitation | Float SDS | 4 | nlat*nlon | - | 0.0 - 10 | mm hr-1 | Satellite/gauge precipitation estimate | | Random Error | Float SDS | 4 | nlat*nlon | - | 0.0 - 10 | mm hr-1 | Satellite/gauge random error estimate |
Note: nlat = 400: number of 0.25° latitude grids from 50°S - 50°N;
nlon = 1440: number of 0.25° longitude grids from 180°W - 180°E;
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