GPM VIRS on TRMM unpacked data L1A 1.5 hours 2 km V05 (GPM_1AVIRS) at GES DISC

This is the new (GPM-formated) TRMM product. It replaces the old TRMM_1A01

    Version 05 is the current version of the data set. Previous versions have been superseded by Version 05.

The 1AVIRS product contains science and housekeeping sensor count data directly from the Visible and Infrared Scanner (VIRS) aboard the TRMM satellite. The data has been unpacked from the spacecraft packets and geolocated. A Level 1A file contains data for a single orbit and has a file size of about 131 MB. There are 16 files of VIRS 1A data produced per day.

The Visible and Infrared Scanner (VIRS) is a five-channel visible/infrared radiometer, which builds on the heritage of the Advanced Very High Resolution Radiometer (AVHRR) instrument flown aboard the NOAA series of Polar-Orbiting Operational Environmental Satellites (POES). The VIRS detects radiation at 1 visible, 2 near infrared and 2 thermal infrared wavelengths, allowing determination of cloud coverage, cloud top height and temperature, and precipitation indices. The central wavelengths for the VIRS channels are 0.63, 1.60,3.75, 10.8, and 12.0 microns. All channels are in operation during the daytime, but only channels 3, 4 and 5 operate during the nighttime.

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

Data and Resources

Field Value
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). 2017-10-02. GPM_1AVIRS. GPM VIRS on TRMM unpacked data L1A 1.5 hours 2 km V05. Greenbelt, MD. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). https://doi.org/10.5067/GPM/VIRS/TRMM/1A/05. https://disc.gsfc.nasa.gov/datacollection/GPM_1AVIRS_05.html. Digital Science Data.
creator Tropical Rainfall Measuring Mission (TRMM)
data-presentation-form Digital Science Data
graphic-preview-file https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/GPM_1AVIRS_05.png
identifier C1424679150-GES_DISC
issued 2017-10-02
landingPage https://doi.org/10.5067/GPM/VIRS/TRMM/1A/05
language {en-US}
metadata_type geospatial
modified 2017-10-02
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
release-place Greenbelt, MD
resource-type Dataset
series-name GPM_1AVIRS
source_datajson_identifier true
source_hash b85ce4dff5a6f087e47c9e09022068ab12926150
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-180.0, -38.0], [180.0, -38.0], [180.0, 38.0], [-180.0, 38.0], [-180.0, -38.0]]]}
temporal 1997-12-20T00:00:00Z/2014-03-21T23:59:59.999Z
theme {TRMM,geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • earth-science
  • geo
  • geoss
  • infrared-wavelengths
  • national
  • north-america
  • platform-characteristics
  • sensor-characteristics
  • spectral-engineering
  • united-states
  • visible-wavelengths
isopen False
license_id notspecified
license_title License not specified
maintainer ANDREY SAVTCHENKO
maintainer_email Andrey.Savtchenko@nasa.gov
metadata_created 2025-11-22T13:34:08.440676
metadata_modified 2025-11-22T13:34:08.440680
notes This is the new (GPM-formated) TRMM product. It replaces the old TRMM_1A01 Version 05 is the current version of the data set. Previous versions have been superseded by Version 05. The 1AVIRS product contains science and housekeeping sensor count data directly from the Visible and Infrared Scanner (VIRS) aboard the TRMM satellite. The data has been unpacked from the spacecraft packets and geolocated. A Level 1A file contains data for a single orbit and has a file size of about 131 MB. There are 16 files of VIRS 1A data produced per day. The Visible and Infrared Scanner (VIRS) is a five-channel visible/infrared radiometer, which builds on the heritage of the Advanced Very High Resolution Radiometer (AVHRR) instrument flown aboard the NOAA series of Polar-Orbiting Operational Environmental Satellites (POES). The VIRS detects radiation at 1 visible, 2 near infrared and 2 thermal infrared wavelengths, allowing determination of cloud coverage, cloud top height and temperature, and precipitation indices. The central wavelengths for the VIRS channels are 0.63, 1.60,3.75, 10.8, and 12.0 microns. All channels are in operation during the daytime, but only channels 3, 4 and 5 operate during the nighttime. 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
num_resources 8
num_tags 14
title GPM VIRS on TRMM unpacked data L1A 1.5 hours 2 km V05 (GPM_1AVIRS) at GES DISC