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Description
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
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earth science, atmosphere, atmospheric water vapor, clouds, precipitation, atmospheric radiation
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TRMM Microwave Imager Hydrometeor Profile L2 1.5 hours V7 (TRMM_2A12) at GES DISC

Description

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

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    Comparison between TRMM versions 6 and 7.
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created Sep 20 2019

updated Jan 17 2022

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Tags
earth science, atmosphere, atmospheric water vapor, clouds, precipitation, atmospheric radiation
Links
Permalink
https://data.nasa.gov/dataset/TRMM-Microwave-Imager-Hydrometeor-Profile-L2-1-5-h/ck99-fg5hOpens in new window.
Short URL
https://data.nasa.gov/d/ck99-fg5h?category=dataset&view_name=TRMM-Microwave-Imager-Hydrometeor-Profile-L2-1-5-hOpens in new window.
Licensing and Attribution
Data Provided By
(none)
Source Link
(none)
Common Core
Publisher
NASA/GSFC/SED/ESD/GCDC/GESDISC
Contact Name
ANDREY SAVTCHENKO
Contact Email
mailto:Andrey.Savtchenko@nasa.gov
Bureau Code
["026:00"]
Program Code
["026:001"]
Public Access Level
public
Geographic Coverage
-180.0 -38.0 180.0 38.0
Temporal Applicability
1997-12-31T00:00:00Z/2015-04-08T23:59:59.999Z
Theme
["TRMM", "geospatial"]
Language
["en-US"]
Homepage
https://cmr.earthdata.nasa.gov:443/search/concepts/C1282060543-GES_DISC.html
Issued
2011-07-01T00:00:00.000Z
Unique Identifier
C1282060543-GES_DISC
Last Update
2016-04-20T00:00:00.000Z
Common Core Extensions
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
release-place
Greenbelt, MD
series-name
TRMM_2A12
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