Nimbus-7 Temperature-Humidity Infrared Radiometer (THIR) at 6.7 and 11.5 micron Imagery of Brightness Temperature at Day and Night on 70 mm Film (THIRN7IM) at GES DISCEntry ID: GES_DISC_THIRN7IM_V001
Abstract: The THIRN7IM data product consists of daily montages of brightness temperatures on 70 mm photofacsimile film strips from the Nimbus-7 Temperature-Humidity Infrared Radiometer measured at 6.7 and 11.5 microns. 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 for 6.7 microns and 8.2 km for 11.5 microns 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 9 of "The Nimbus 7 User's Guide."
The Nimbus 7 Temperature-Humidity Infrared Radiometer (THIR) was designed to detect emitted thermal radiation in both the 10.5- to 12.5-micron region (IR window) and the 6.5- to 7.0-micron 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 Oct. 30, 1978 to May 9, 1985 when the instrument was turned off to conserve power.
Purpose: These images can be used to supplement the radiance data files from the THIRN7L2CH67 and THIRN7L2CH115 data products.
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Data Set Citation
Dataset Originator/Creator: Goddard Space Flight Center (GSFC)
Dataset Title: Nimbus-7 Temperature-Humidity Infrared Radiometer (THIR) at 6.7 and 11.5 micron Imagery of Brightness Temperature at Day and Night 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: 1984-04-14Stop Date: 1984-06-06
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 (1970), Nimbus IV 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