TRMM Microwave Imager (TMI) Level 2 Hydrometeor Profile Product (TRMM Product 2A12)Entry ID: GES_DISC_TRMM_TMI_2A12_V6
Abstract: The Tropical Rainfall Measuring Mission (TRMM) is a joint U.S.-Japan satellite mission to monitor tropical and subtropical precipitation and to estimate its associated latent heating.
Hydrometeor profiles of cloud liquid water, precipitation water, cloud ice water, precipitation ice, rainfall type, and latent heating are reported in 14 layers, with a vertical resolution of 0.5 km from the surface ... to 18.0 km. Geolocation, time stamp, data quality, surface type, and surface rain confidence are included for each pixel. Spatial coverage is between 38 degrees North and 38 degrees South, owing to the 35 degree inclination of the TRMM satellite. This orbit provides extensive coverage in the tropics and allows each location to be covered at a different local time each day, enabling the analysis of the diurnal cycle of precipitation. There are, in general, 2991 scans along the orbit, with each scan consisting of 208 high resolution (85 GHz) pixels. The scan width is about 760 km.
The data are stored in the Hierarchical Data Format (HDF), which includes both core and product specific metadata applicable to the TMI measurements. A file contains a single orbit of data with a file size of about 95 MB (uncompressed). The HDF-EOS "swath" structure is used to accommodate the actual geophysical data arrays. There are 16 files of TMI 2A12 data produced per day.
Data Set Citation
Dataset Originator/Creator: NASA,JAXA, Tropical Rainfall Measuring Mission (TRMM)
Dataset Title: TRMM Microwave Imager (TMI) Level 2 Hydrometeor Profile Product (TRMM Product 2A12)
Version: 6Online Resource: http://mirador.gsfc.nasa.gov/cgi-bin/mirador/presentNavigation.pl?t...
Start Date: 1997-12-07
Vertical Resolution: 4.0 km from 10 to 18 km
Vertical Resolution Range: > 1 km
Temporal Resolution: 16 orbits per day
Temporal Resolution Range: Daily - < Weekly
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > CONDENSATION > LATENT HEATING
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > EVAPORATION > LATENT HEATING
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > SUBLIMATION > LATENT HEATING
ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD LIQUID WATER/ICE
ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD PRECIPITABLE WATER
ATMOSPHERE > PRECIPITATION > LIQUID WATER EQUIVALENT
ATMOSPHERE > PRECIPITATION > PRECIPITATION RATE
ATMOSPHERE > PRECIPITATION > RAIN
ATMOSPHERE > ATMOSPHERIC RADIATION > HEAT FLUX > LATENT HEATING
ISO Topic Category
Quality Quality flags have been included with the data to give users a sense of the confidence placed on the individual retrievals. Data will be reprocessed as characteristics of the sensor become better understood and enhancements are made to the science algorithms.
Access Constraints None
Data Set Progress
Distribution Media: FTP
Distribution Size: Average file size: 8072 kb
Distribution Format: HDF
Role: TECHNICAL CONTACT
Phone: (301) 614-5165
Fax: (301) 614-5268
Email: gsfc-help-disc at lists.nasa.gov
Hydrology Data Support Team, Code 610.2 Goddard Space Flight Center
Province or State: MD
Postal Code: 20771
Phone: +1 (970) 491-7473
Fax: +1 (970) 491-8449
Email: kummerow at atmos.colostate.edu
Department of Atmospheric Science Colorado State University 200 West Lake Street
City: Fort Collins
Province or State: CO
Postal Code: 80523
Interface Control Specification Between the Tropical Rainfall Measuring Mission Science Data and Information System (TSDIS) and the TSDIS Science User (TSU). Volume 4: File Specifications for TSDIS Products-Level 2 and Level 3. NASA Goddard Space Flight Center, March 5, 1999.
Extended Metadata Properties
(Click to view more)
Creation and Review Dates
DIF Creation Date: 2006-05-19
Last DIF Revision Date: 2011-12-22