DMSP SSM/I-SSMIS Daily Polar Gridded Brightness Temperatures V006

This data set provides daily gridded brightness temperatures derived from passive microwave sensors and distributed in a polar stereographic projection. NSIDC produces daily gridded brightness temperatures from orbital swath data generated by the Special Sensor Microwave/Imager (SSM/I) aboard the Defense Meteorological Satellite Program (DMSP) F8, F11, and F13 platforms and the Special Sensor Microwave Imager/Sounder (SSMIS) aboard DMSP F17 and F18. The SSM/I and SSMIS channels used to calculate brightness temperatures include 19.3 GHz vertical and horizontal, 22.2 GHz vertical, 37.0 GHz vertical and horizontal, 85.5 GHz vertical and horizontal (on SSM/I), and 91.7 GHz vertical and horizontal (on SSMIS). Data at 85.5 GHz and 91.7 GHz are gridded at a resolution of 12.5 km, with all other frequencies at a resolution of 25 km. Orbital data for each 24-hour period are mapped to respective grid cells using a simple sum-and-average method, also known as the drop-in-the-bucket method. Data coverage began on 09 July 1987 and is ongoing through the most current processing, with updated data processed several times annually.

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Additional Info

Field	Value
Maintainer	Walter Meier
Last Updated	March 27, 2025, 14:14 (UTC)
Created	February 19, 2025, 09:17 (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	DMSP SSM/I-SSMIS Daily Polar Gridded Brightness Temperatures V006. Version 6. Archived by National Aeronautics and Space Administration, U.S. Government, NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/MXJL42WSXTS1.
harvest_object_id	d1635d34-1760-4b11-af64-f964378fb874
harvest_source_id	b37e5849-07d2-41cd-8bb6-c6e83fc98f2d
harvest_source_title	DNG Legacy Data
identifier	C2113542962-NSIDC_ECS
issued	1987-07-09
landingPage	https://doi.org/10.5067/MXJL42WSXTS1
language	{en-US}
metadata_type	geospatial
modified	2025-01-05
programCode	{026:001}
publisher	NASA NSIDC DAAC
resource-type	Dataset
source_datajson_identifier	true
source_hash	a7a293ed0a0680896da236a3a8cda562e37464bb1630ace75eb3998725066ae4
source_schema_version	1.1
spatial	-180.0 30.0 180.0 90.0
temporal	1987-07-09T00:00:00Z/2025-03-10T00:00:00Z
theme	{geospatial}