THIR/Nimbus-4 Images of Daytime and Nighttime Brightness Temperature at 6.7 microns on 70 mm Film V001 (THIRN4IMCH67) at GES DISC

THIRN4IMCH67 is the Nimbus-4 Temperature-Humidity Infrared Radiometer (THIR) data product consisting of daily montages of brightness temperatures measured at 6.7 microns on 70 mm photofacsimile film strips. Daytime and nighttime orbital swaths are displayed in strips, each corresponding to a distance approximately from pole to pole and a width from horizon to horizon. The ground resolution of 22.6 km at nadir decreases as the horizontal distance from the subsatellite track increases. Each film strip is gridded with geographic coordinates and is identified by orbit number, time, and an indication of whether it is daytime (D) or nighttime (N). The images are saved as JPEG 2000 digital files. About 1 week of images are archived into a TAR file. Additional information can be found in section 3.4.1 of "The Nimbus IV User's Guide".

The THIR instrument was designed to detect emitted thermal radiation in both the 10.5- to 12.5-micrometer region (IR window) and the 6.5- to 7.0-micrometer region (water vapor). The window channel measured cloudtop temperatures day and night. The other channel operated primarily at night to map the water vapor distribution in the upper troposphere and stratosphere. The THIR experiment made measurements from April 18, 1970 until April 8, 1971.

This product was previously available from the NSSDC with the identifier ESAD-00194 (old ID 70-025A-02B).

Data and Resources

Additional Info

Field Value
Maintainer JAMES JOHNSON
Last Updated July 17, 2025, 14:16 (UTC)
Created March 31, 2025, 13:38 (UTC)
accessLevel public
bureauCode {026:00}
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catalog_@id https://data.nasa.gov/data.json
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catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
citation Goddard Space Flight Center (GSFC). THIRN4IMCH67. Version 001. THIR/Nimbus-4 Images of Daytime and Nighttime Brightness Temperature at 6.7 microns on 70 mm Film V001. Greenbelt, MD, USA. 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/THIRN4IMCH67_001.html. Digital Science Data.
creator Goddard Space Flight Center (GSFC)
data-presentation-form Digital Science Data
graphic-preview-file https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/THIRN4IMCH67_001.png
harvest_object_id a48077dc-92b8-4562-83b9-7aaf9118e0ec
harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C1273652159-GES_DISC
issued 2011-06-15
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C1273652159-GES_DISC.html
language {en-US}
metadata_type geospatial
modified 2011-06-15
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
release-place Greenbelt, MD, USA
resource-type Dataset
series-name THIRN4IMCH67
source_datajson_identifier true
source_hash 793f56fc9c62668bb93849961c5bddf1b7bb23b78ee21fda9e42acbaec05d292
source_schema_version 1.1
spatial -180.0 -90.0 180.0 90.0
temporal 1970-05-23T00:00:00Z/1970-06-06T23:59:59.999Z
theme {Nimbus,geospatial}