TRMM 3B42: 3-Hourly Precipitation Estimates (TRMM/3B42)

The Tropical Rainfall Measuring Mission (TRMM) is a
joint mission between NASA and the Japan Aerospace Exploration
Agency (JAXA) designed to monitor and study tropical rainfall.
The 34B2 product contains a gridded, TRMM-adjusted, merged infrared
precipitation (mm/hr) and RMS precipitation-error estimate, with
a 3-hour temporal resolution and a 0.25 degree spatial resolution.

See the algorithm description
and the file specification
for details.

NameDescriptionGee Unit
precipitationMerged microwave/IR precipitation estimatemm/hr
relativeErrorMerged microwave/IR precipitation random error estimatemm/hr
satPrecipitationSourceFlag to show source of data
HQprecipitationPre-gauge-adjusted microwave precipitation estimatemm/hr
IRprecipitationPre-gauge-adjusted infrared precipitation estimatemm/hr
satObservationTimeSatellite observation time minus the time of the granule. In case of overlapping satellite observations, the two or more observation times are equal-weighting averaged.Minutes


NASA GSFC (producer, licensor)
Google Earth Engine (host)
STAC Version 0.6.0
Keywords 3-hourly, climate, geophysical, jaxa, nasa, precipitation, rainfall, trmm, weather
License proprietary
Temporal Extent 12/31/1997, 4:00:00 PM - now
Citation Adler, R.F., G.J. Huffman, A. Chang, R. Ferraro, P. Xie, J. Janowiak, B. Rudolf, U. Schneider, S. Curtis, D. Bolvin, A. Gruber, J. Susskind, P. Arkin, E.J. Nelkin, 2003: The Version 2 Global Precipitation Climatology Project (GPCP) Monthly Precipitation Analysis (1979-Present). J. Hydrometeor., 4(6), 1147-1167.
Type image_collection
GSD arc degreesm
Platform TRMM
Instrument TMI
Cadence hours
Asset schema {"name":"StartGranuleDateTime","description":"Granule start date and time","type":"STRING"},{"name":"StopGranuleDateTime","description":"Granule end date and time","type":"STRING"}