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TRMM Precipitation Radar Rain Characteristics L2 1.5 hours V7 (TRMM_2A23) at GES DISC

Published by NASA/GSFC/SED/ESD/GCDC/GESDISC | National Aeronautics and Space Administration | Metadata Last Checked: August 04, 2025 | Last Modified: 2025-03-31
The new version of these data is in GPM-like format (consistent with the GPM Dual-frequency Radar data format), and can be found under the name GPM_2APR. The TRMM Precipitation Radar (PR), the first of its kind in space, is an electronically scanning single-frequency radar, operating at 13.8 GHz that measures the 3-D rainfall distribution over both land and ocean, and defines the layer depth of the precipitation. PR 2A23 produces a rain/no-rain flag. Its main objectives are (1) to detect bright band (BB), (2) to classify rain type, and (3) to detect warm rain. 2A23 uses two different methods for classifying rain type: (1) vertical profile method (V-method) and (2) horizontal pattern method (H-method). Both methods classify rain into three categories: stratiform, convective, and other. To make the results user-friendly, 2A23 outputs a unified rain type. Further information about 2A23 can be found in Awaka et al. (1998). Pre-Boost (before 7 August 2001): Temporal Resolution: 91.5 min/orbit ~ 16 orbits/day; Swath Width: 215 km; Horizontal Resolution: 4.3 km Post-Boost (after 24 August 2001): Temporal Resolution: 92.5 min/orbit ~ 16 orbits/day; Swath Width: 247 km; Horizontal Resolution: 5.0 km

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  • View documentation related to this dataset

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  • View this dataset's read me document

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Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
                                            [
  "026:00"
]
contactPoint 
                                            {
  "fn": "ANDREY SAVTCHENKO",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:Andrey.Savtchenko@nasa.gov"
}
description The new version of these data is in GPM-like format (consistent with the GPM Dual-frequency Radar data format), and can be found under the name GPM_2APR. The TRMM Precipitation Radar (PR), the first of its kind in space, is an electronically scanning single-frequency radar, operating at 13.8 GHz that measures the 3-D rainfall distribution over both land and ocean, and defines the layer depth of the precipitation. PR 2A23 produces a rain/no-rain flag. Its main objectives are (1) to detect bright band (BB), (2) to classify rain type, and (3) to detect warm rain. 2A23 uses two different methods for classifying rain type: (1) vertical profile method (V-method) and (2) horizontal pattern method (H-method). Both methods classify rain into three categories: stratiform, convective, and other. To make the results user-friendly, 2A23 outputs a unified rain type. Further information about 2A23 can be found in Awaka et al. (1998). Pre-Boost (before 7 August 2001): Temporal Resolution: 91.5 min/orbit ~ 16 orbits/day; Swath Width: 215 km; Horizontal Resolution: 4.3 km Post-Boost (after 24 August 2001): Temporal Resolution: 92.5 min/orbit ~ 16 orbits/day; Swath Width: 247 km; Horizontal Resolution: 5.0 km
distribution 
                                            [
  {
    "@type": "dcat:Distribution",
    "title": "Download this dataset through a directory map",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Access the data via HTTPS",
    "downloadURL": "https://disc2.gesdisc.eosdis.nasa.gov/data/TRMM_L2/TRMM_2A23.7"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Use OPeNDAP to access the dataset's data",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Access the data via the OPeNDAP protocol.",
    "downloadURL": "https://disc2.gesdisc.eosdis.nasa.gov/opendap/TRMM_L2/TRMM_2A23.7/"
  },
  {
    "@type": "dcat:Distribution",
    "title": "This dataset's landing page",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Access the dataset landing page from the GES DISC website.",
    "downloadURL": "https://disc.gsfc.nasa.gov/datacollection/TRMM_2A23_7.html"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View documentation related to this dataset",
    "format": "PDF",
    "mediaType": "application/pdf",
    "description": "Comparison between TRMM versions 6 and 7.",
    "downloadURL": "https://pps.gsfc.nasa.gov/Documents/formatChangesV7.pdf"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View documentation related to this dataset",
    "format": "PDF",
    "mediaType": "application/pdf",
    "description": "File specification document.",
    "downloadURL": "https://pps.gsfc.nasa.gov/Documents/filespec.TRMM.V7.pdf"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View this dataset's read me document",
    "format": "PDF",
    "mediaType": "application/pdf",
    "description": "README Document",
    "downloadURL": "https://disc2.gesdisc.eosdis.nasa.gov/data/TRMM_L2/TRMM_2A23/doc/README.TRMM_V7.pdf"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View documentation related to this dataset",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "TRMM Data Gaps",
    "downloadURL": "https://gpmweb2https.pps.eosdis.nasa.gov/tsdis/AB/docs/anomalous.html"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View documentation related to this dataset",
    "format": "PDF",
    "mediaType": "application/pdf",
    "description": "TRMM Precipitation Radar Instruction Manual (provided by JAXA)",
    "downloadURL": "http://www.eorc.jaxa.jp/TRMM/documents/PR_algorithm_product_information/pr_manual/PR_Instruction_Manual_V7_L1.pdf"
  },
  {
    "@type": "dcat:Distribution",
    "title": "The dataset's project home page",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "TRMM Project Home Page",
    "downloadURL": "https://trmm.gsfc.nasa.gov/"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Download this dataset through Earthdata Search",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Use the Earthdata Search to find and retrieve data sets across multiple data centers.",
    "downloadURL": "https://search.earthdata.nasa.gov/search?q=TRMM_2A23"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Get a related visualization",
    "format": "PNG",
    "mediaType": "image/png",
    "downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/TRMM_2A23_7.png"
  }
]
identifier C1282060545-GES_DISC
issued 2011-07-01
keyword 
                                            [
  "atmosphere",
  "earth-science",
  "precipitation"
]
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C1282060545-GES_DISC.html
language 
                                            [
  "en-US"
]
modified 2025-03-31
programCode 
                                            [
  "026:001"
]
publisher 
                                            {
  "name": "NASA/GSFC/SED/ESD/GCDC/GESDISC",
  "@type": "org:Organization"
}
spatial -180.0 -38.0 180.0 38.0
temporal 1997-12-31T00:00:00Z/2015-04-01T23:59:59.999Z
theme 
                                            [
  "TRMM",
  "geospatial"
]
title TRMM Precipitation Radar Rain Characteristics L2 1.5 hours V7 (TRMM_2A23) at GES DISC

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