Nimbus-7 SMMR Antenna Temperatures, Version 1
The SMMR Antenna Temperatures (Nimbus-7) data set consists of antenna temperatures from passive microwave radiometers aboard NOAA's Nimbus-7 satellite. The instrument is the Scanning Multichannel Microwave Radiometer (SMMR). Each file consists of one days worth of data in swath format, i.e. the portion of the Earth's surface viewed by the scanning radiometer. Antenna temperature data are available from NSIDC from October 1978 to August 1987. SMMR was a ten channel passive microwave instrument using six conventional Dicke-type radiometers. It delivered orthogonally polarized antenna temperature data at five frequencies: 6.6, 10.69, 18.0 21.0 and 37.0 GHz. The two 37.0 GHz radiometers operated continuously for each polarization. The other radiometers alternated polarizations on alternate scans. The size of each daily file is 35 MBytes. The data are distributed on FTP. The scanner operated only on alternate days, due to spacecraft power limitations. There are typically at least 14 days of coverage per month, although major data gaps occur in August: in August, 1982, the 4th, 8th, and 16th are missing for both polar regions; in August, 1984, the 13th through the 23rd are missing for both polar regions.
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| Spatial Extent: | Bounding Rectangle: N: 84.0 S: -84.0 E: 180.0 W: -180.0 |
Data Format(s): | Distribution: Binary |
| Temporal Extent: | Platform(s): | Nimbus-7 | |
| Data Center(s): | NASA NSIDC DAAC | Instrument(s): | SMMR |
| Version: | 1 | ||
- Title: Nimbus-7 SMMR Antenna Temperatures, Version 1
- Version: 1
- Publisher: NASA National Snow and Ice Data Center Distributed Active Archive Center
- GENERAL DOCUMENTATION: https://doi.org/10.5067/C8ZJDDHZAS59, Includes a user's guide, supplemental documents like ATBDs and academic papers, How Tos, FAQs, etc.
Collection Information
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Purpose
Scientific Research -
DOI
10.5067/C8ZJDDHZAS59
Data Identification
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Processing Level
Level 1
Instrument data or sensor units
- Quality
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Collection Progress
Complete
Related URLs
Acquisition Information
Temporal Information
Spatial Information
| Coverage Type | Zone Identifier | Geometry | Granule Representation |
|---|---|---|---|
| HORIZONTAL | CARTESIAN | GEODETIC |
Location Keywords
- GEOGRAPHIC REGION
- GLOBAL
- VERTICAL LOCATION
- TROPOSPHERE
Data Centers
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NASA NSIDC DAAC
ARCHIVER-
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder, CO 80309-0449
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NASA NSIDC DAAC
DISTRIBUTOR-
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder, CO 80309-0449
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Data Contacts
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NSIDC Services
Technical ContactNSIDC Services
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CIRES, 449 UCB
University of Colorado
Boulder, CO 80309-0449
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Per Gloersen
Technical ContactPer Gloersen
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Laboratory for Hydrospheric Processes
NASA/Goddard Space Flight Center
Code 971
Greenbelt, MD 20771
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E Francis
Technical ContactE Francis
This contact does not have any addresses listed.
This contact does not have any contact mechanisms listed.
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NASA National Snow and Ice Data Center Distributed Active Archive Center
User ServicesNASA National Snow and Ice Data Center Distributed Active Archive Center
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Boulder, Colorado
This contact does not have any contact mechanisms listed.
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Archive And Distribution Information
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Format: Binary
Format Type: Native
Format Description: FTP