Nimbus-5 Electrically Scanning Microwave Radiometer (ESMR) Imagery of Brightness Temperature on 70 mm Film (ESMRN5IM) at GES DISCEntry ID: GES_DISC_ESMRN5IM_V001
Abstract: The ESMRN5IM data product consists of daily brightness temperature images on 70-mm photofacsimile film. Each frame contains a geographic grid and two groups of three parallel strips of imagery, each containing one-half the orbital data. The spatial coverage is identical in each group, but each strip has a different dynamic range for its gray scale: 100-200 K, 190-270 K, and 250-300 K, ... respectively. The spatial resolution is 25 x 25 km near nadir, degrading to 160 km cross-track by 45 km down-track at the ends of the scan. The images are saved as JPEG 2000 digital files. About 2 weeks of images are archived into a TAR file. Additional information can be found in "The Nimbus 5 User's Guide."
The primary objectives of the Nimbus 5 Electrically Scanning Microwave Radiometer (ESMR) were: (1) to derive the liquid water content of clouds from brightness temperatures over oceans, (2) to observe differences between sea ice and the open sea over the polar caps, and (3) to test the feasibility of inferring surface composition and soil moisture. To accomplish these objectives, the ESMR was capable of continuous global mapping of the 1.55-cm (19.36 GHz) microwave radiation emitted by the earth/atmosphere system, and could function even in the presence of cloud conditions that block conventional satellite infrared sensors. The ESMR experiment made measurements from Dec. 11, 1972 until May 16, 1977.
Purpose: These images can be used to supplement the radiance data files from the ESMRN5L2 data product.
Data Set Citation
Dataset Originator/Creator: Goddard Space Flight Center (GSFC)
Dataset Title: Nimbus-5 Electrically Scanning Microwave Radiometer (ESMR) Imagery of Brightness Temperature on 70 mm Film
Dataset Release Place: Greenbelt, MD, USA
Dataset Publisher: Goddard Earth Science Data and Information Services (GES DISC)
Data Presentation Form: Digital Science Data
Start Date: 1972-12-11Stop Date: 1973-05-09
Horizontal Resolution Range: 10 km - < 50 km or approximately .09 degree - < .5 degree
Temporal Resolution: Approx 1 hour (daytime orbit)
ISO Topic Category
Use Constraints Please cite the dataset originator if you use this data.
Data Set Progress
Distribution Media: Online (FTP)
Distribution Size: approx. 500 MB per TAR file containing 5 MB images
Distribution Format: TAR containing JPEG 2000 images
Fees: No Fee
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Email: James.Johnson at nasa.gov
NASA Goddard Space Flight Center Code 610.2
Province or State: MD
Postal Code: 20771
GSFC (1972), Nimbus V Users' Guide
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2011-07-20
Last DIF Revision Date: 2011-07-22