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Dataset

 

3-hourly Low Resolution Brightness Temperature (BT) images

Update Frequency: Not Planned
Status: Completed
Online Status: ONLINE
Publication State: Published
Publication Date: 2013-04-09
Download Stats: last 12 months

Abstract

Global Brightness Temperature imagery from the Cloud Archive User Service project. This project produced a long time-series of global thermal infra-red imagery of the Earth using data from operational meteorological satellites, which was used in validating atmospheric General Circulation Models.

The source data used in CLAUS are the level B3 (reduced resolution) 10 micron radiances from operational meteorological satellites participating in the International Satellite Cloud Climatology Programme (ISCCP) and were obtained from the NASA Langley Atmospheric Sciences Data Center (LASDC).

During the CLAUS project the B3 data were processed to create a uniform latitude-longitude grid (or image) of Brightness Temperature (BT) values at a spatial resolution of 0.5 by 0.5 degrees and temporal resolution of three hours. Information at the grid point level about the satellites used in
generating each BT image, and the type of interpolation applied, is held in two supplementary quality files.

The CLAUS Lo-res data archive span the period 1983-2009 and the files are stored in the Portable Grey Map (PGM) format. This is a simple flat file binary format preceded by an ASCII (readable) header that contains information such as the image dimensions and version number.

For detailed information about the CLAUS data (processing, quality, etc) please see available documentation (Docs).

Citable as:  Environmental Systems Science Centre; Robinson, G. (2013): 3-hourly Low Resolution Brightness Temperature (BT) images. NCAS British Atmospheric Data Centre, date of citation. https://catalogue.ceda.ac.uk/uuid/ce476101711ce73107c9e90265ec6d9a
Abbreviation: CLAUS-Lo-Res
Keywords: CLOUDS, CLAUS, temperature, ATMOSPHERE

Details

Previous Info:
No news update for this record
Previously used record identifiers:
http://badc.nerc.ac.uk/view/badc.nerc.ac.uk__ATOM__ACTIVITY_20a4c940-a151-11e2-bc6e-00163e251233
Access rules:
Access to these data is available to any registered CEDA user. Please Login or Register for an account to gain access.
Use of these data is covered by the following licence: https://creativecommons.org/licenses/by-sa/4.0/. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

Data obtained during the period from April 1997 to December 1999 by satellites. Latest version of the CLAUS data (4.7) was acquired as is from Dr Gary Robinson (University of Reading) in December 2009, and is stored in the BADC archive. Data updates from June 2006 to June 2009 were obtained from the data supplier in May 2013.

Data Quality:
Please see CLAUS User Guide for full details.
File Format:
Files are stored in the Portable Grey Map (PGM) format. This is a simple flat file binary format preceded by an ASCII (readable) header that contains information such as the image dimensions and version number. There are 3 files for each day i.e. one data file (*.2bt) for the CLAUS Brightness Temperature Image Data and two ancillary files: *.2cs for CLAUS Contributing Satellite Image Data and *.2iq for CLAUS Interpolation Quality Image Data. See PGM File Format explained documentation under Docs.

Process overview

This dataset was generated by a combination of instruments deployed on platforms and computations as detailed below.

Computation Element: 1

Title DETAILS NEEDED - COMPUTATION CREATED FOR SATELLITE COMPOSITE. deployed on Geostationary Operational Environmental Satellite - GOES-9 or GOES-J
Abstract This computation involved: DETAILS NEEDED - COMPUTATION CREATED FOR SATELLITE COMPOSITE. deployed on Geostationary Operational Environmental Satellite - GOES-9 or GOES-J.
Input Description None
Output Description None
Software Reference None
Output Description None
  • gcmd_keyword: Brightness Temperature
  • long_name: Brightness Temperature
  • gcmd_url: http://vocab.ndg.nerc.ac.uk/term/P141/4/GVAR0104
  • names: Brightness Temperature, http://vocab.ndg.nerc.ac.uk/term/P141/4/GVAR0104

Co-ordinate Variables

Coverage
Temporal Range
Start time:
1983-06-30T23:00:00
End time:
2009-06-29T23:00:00
Geographic Extent

 
90.0000°
 
-180.0000°
 
180.0000°
 
-90.0000°