TRMM Microwave Imager Hydrometeor Profile L2 1.5 hours V7 (TRMM_2A12) at GES DISC

The new version of these data is in GPM-like format and can be found under the name GPM_2AGPROFTRMMTMI_CLIM.

This dataset, 2A12, ”TMI Profiling”, generates surface rainfall and vertical hydrometeor profiles on a pixel by pixel basis from the TRMM Microwave Imager (TMI) brightness temperature data using the Goddard Profiling algorithm GPROF2010. Because the vertical information comes from a radiometer, it is not written out in independent vertical layers like the TRMM Precipitation Radar. Instead, the output is referenced to one of 100 typical structures for each hydrometeor or heating profile. These vertical structures are referenced as clusters in the output structure. Vertical hydrometeor profiles can be reconstructed to 28 layers by knowing the cluster number (i.e. shape) of the profile and a scale factor that is written for each pixel.

This product contains hydrometeor profiles of cloud liquid water, precipitation water, cloud ice water, precipitation ice, rainfall type, and latent heating in 28 atmospheric layers.

Changes in horizontal resolution resulting from the TRMM boost that occurred on 24 August 2001:

Pre-Boost (before 7 August 2001): Temporal Resolution: 91.5 min/orbit ~ 16 orbits/day; Swath Width: 760 km; Horizontal Resolution: 4.4 km

Post-Boost (after 24 August 2001): Temporal Resolution: 92.5 min/orbit ~ 16 orbits/day; Swath Width: 878 km; Horizontal Resolution: 5.1 km

Data and Resources

Additional Info

Field Value
Maintainer ANDREY SAVTCHENKO
Last Updated February 19, 2025, 04:34 (UTC)
Created February 19, 2025, 04:34 (UTC)
accessLevel public
bureauCode {026:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.nasa.gov/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
citation Tropical Rainfall Measuring Mission (TRMM). 2011-07-01. TRMM_2A12. TRMM Microwave Imager Hydrometeor Profile L2 1.5 hours V7. Greenbelt, MD. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). https://disc.gsfc.nasa.gov/datacollection/TRMM_2A12_7.html.
creator Tropical Rainfall Measuring Mission (TRMM)
graphic-preview-file https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/TRMM_2A12_7.png
harvest_object_id e9825941-7209-4281-a621-b2e77ee4c572
harvest_source_id b37e5849-07d2-41cd-8bb6-c6e83fc98f2d
harvest_source_title DNG Legacy Data
identifier C1282060543-GES_DISC
issued 2011-07-01
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C1282060543-GES_DISC.html
language {en-US}
metadata_type geospatial
modified 2016-04-20
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
release-place Greenbelt, MD
resource-type Dataset
series-name TRMM_2A12
source_datajson_identifier true
source_hash 3369bd2935848de1d0534631ab6101f4a15a0cd5cb131cdbe3c07d0c7804d8e9
source_schema_version 1.1
spatial -180.0 -38.0 180.0 38.0
temporal 1997-12-31T00:00:00Z/2015-04-08T23:59:59.999Z
theme {TRMM,geospatial}