Clouds and the Earth's Radiant Energy System (CERES) ERBE-like Instantaneous TOA Estimates (ES-8) Data Set Abstract |
The ERBE-like Instantaneous TOA Estimates (ES-8) product contains 24 hours of instantaneous Clouds and the Earth's Radiant Energy System (CERES) data for a single scanner instrument. The ES-8 contains filtered radiances recorded every 0.01-second for the total, shortwave (SW), and window (WN) channels and the unfiltered SW, longwave (LW), and WN radiances. The SW and LW radiances at spacecraft altitude are converted to Top-of-the-Atmosphere (TOA) fluxes with a scene identification algorithm and Angular Distribution Models (ADMs) which are "like" those used for the Earth Radiation Budget Experiment (ERBE). The TOA fluxes, scene identification, and angular geometry are included on the ES-8. These data are organized according to the CERES 3.3-second scan into 6.6-second scan cycles. As long as there is one valid scanner measurement within a scan cycle, the ES-8 record will be generated.
The ES-8 contains the following information:
Scan-level Data (Vdata Structures)
Measurement-level Data (Scientific Data Sets (SDSs))
( 1) clear ocean ( 2) clear land ( 3) clear snow ( 4) clear desert |
( 5) clear coastal ( 6) partly cloudy ocean ( 7) partly cloudy land-desert ( 8) partly cloudy coastal |
( 9) mostly cloudy ocean (10) mostly cloudy land-desert (11) mostly cloudy coastal (12) overcast |
Additional information about the format and content of the ES-8 can be found in the CERES Data Products Catalog (PDF document). Details concerning the science parameters and how they are calculated can be found in the CERES Algorithm Theoretical Basis Document for Subsystem 2.0 and in the ES-8 Collection Guide.
The CERES Data Management Team and the Atmospheric Science Data Center (ASDC) at Langley use a Sampling Strategy, a Production Strategy, and a Configuration Code (CCode) to track versions of CERES archival data products. In general, minor reprocessing changes are tracked by increasing the Configuration Code while major reprocessing changes result in a new Production Strategy. The Sampling Strategy identifies the satellite and instrument which acquired the data in the product.
A summary of changes made to the ES-8 HDF-EOS product is shown in the following table.
Modification History for: Aqua | Terra | TRMM
Sampling Strategy and Production Strategy |
CCode | Available at ASDC |
Impact on the ES-8 Product |
---|---|---|---|
Aqua-FM3_Edition1-CV3 Aqua-FM4_Edition1-CV3 |
026029 | 04/2006 |
|
Aqua-FM3_Edition1-CV3 Aqua-FM4_Edition1-CV3 |
026028 | 04/2006 |
|
Aqua-FM3_Edition13 Aqua-FM4_Edition13 |
026026 | 03/2005 |
|
Aqua-FM3_Edition23 Aqua-FM4_Edition23 |
026025 | 06/2004 |
|
Aqua-FM3_Edition13 Aqua-FM4_Edition13 |
026025 | 05/2004 |
|
Aqua-FM3_Edition23 Aqua-FM4_Edition23 |
026024 | 02/2004 |
|
Aqua-FM3_Edition13 Aqua-FM4_Edition13 |
026024 | 02/2004 |
|
Aqua-FM3_Edition13 Aqua-FM4_Edition13 |
025023 | 08/2003 |
|
Aqua-FM3_Edition13 Aqua-FM4_Edition13 |
025022 | 06/2003 |
|
Modification History for: Aqua | Terra | TRMM
Sampling Strategy and Production Strategy |
CCode | Available at ASDC |
Impact on the ES-8 Product |
---|---|---|---|
Terra-FM1_Edition1-CV3 Terra-FM2_Edition1-CV3 |
026029 | 04/2006 |
|
Terra-FM1_Edition1-CV3 Terra-FM2_Edition1-CV3 |
026028 | 04/2006 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
026026 | 03/2005 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
026026 | 03/2005 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 Terra-FM1_Edition23 Terra-FM2_Edition23 |
026025 | 05/2004 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
026024 | 02/2004 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
025023 | 08/2003 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
025023 | 08/2003 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
023019 | 09/2002 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
023019 | 09/2002 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
021018 | 09/2001 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
020016 | 04/2001 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
019015 | 11/2000 |
|
Modification History for: Aqua | Terra | TRMM
Sampling Strategy and Production Strategy |
CCode | Available at ASDC |
Impact on the ES-8 Product |
---|---|---|---|
TRMM-PFM_Edition23 | 025023 | 06/2003 |
|
TRMM-PFM_Edition23 | 023019 | 09/2002 |
|
TRMM-PFM_Edition23 TRMM-PFM_Transient-Ops23 TRMM-PFM_FailingSensor2 |
021018 | 09/2001 |
|
TRMM-PFM_Edition12 | 018014 | 09/2000 |
|
TRMM-PFM_Edition22 | 017013 | 04/2000 |
|
TRMM-PFM_Edition22 | 016012 | 03/2000 |
|
TRMM-PFM_Edition22 | 014011 | 02/2000 |
|
TRMM-PFM_Transient-Ops22 | 011004 | 12/1999 |
|
TRMM-PFM_Edition13 | 009001 | 10/1998 |
|
TRMM-PFM_Edition12 | 008000 | 08/1998 |
|
TRMM-PFM_Edition12 | 007000 | 06/1998 |
|
Nine quality control images (gif files) are generated and made available on the Web for each ES-8.
These images are for shortwave, window, and total filtered radiances; shortwave, window, and longwave unfiltered radiances; shortwave and longwave TOA fluxes; and the results of the ERBE scene identification algorithm. Examples for each of these images from the January 1, 1998 TRMM data set follow.
Filtered Radiances | ||
Shortwave | Window | Total |
Unfiltered Radiances | ||
Shortwave | Window | Longwave |
TOA Fluxes | ERBE Scene ID | |
Shortwave | Longwave |
Additional images and ancillary data sets (such as Spectral Correction Coefficients and Angular Distribution Models) are available from the CERES ERBE-like Data Validation - Public Page.
Blackadar, Alfred, A Computer Almanac, Weatherwise, Vol. 37, 5, October 1984, p. 257-260.
Clouds and the Earth's Radiant Energy System (CERES) Data Management System Data Products Catalog (PDF) Release 3, Version 2, March 2000.
Clouds and the Earth's Radiant Energy System (CERES) Algorithm Theoretical Basis Document, Instrument Geolocate and Calibrate Earth Radiances (Subsystem 1.0), Release 2.2, June 1997.
Clouds and the Earth's Radiant Energy System (CERES) Algorithm Theoretical Basis Document, ERBE-like to Instantaneous Fluxes (Subsystem 2.0), Rel. 2.2, June 2, 1997.
Clouds and the Earth's Radiant Energy System (CERES) Data Management System Software Requirements document, ERBE-like Inversion to Instantaneous TOA and Surface Fluxes, (Subsystem 2.0) Release 1, Version 1, November 1994.
Clouds and the Earth's Radiant Energy System (CERES) Validation Plan, ERBE-like Inversion to Instantaneous TOA and Surface Fluxes, (Subsystem 2.0) Release 2.2, July 1997.
HDF User's Guide, NASA Langley Atmospheric Science Data Center, Hierarchical Data Format Web Site, (from NCSA) Version 4.0, February 1996.
Jefferys, William H., "Julian Day Numbers".
Release B SCF ToolKit User's Guide for the ECS Project, June 1998.
Software Bulletin "CERES Metadata Requirements for LaTIS", Revision 1, January 7, 1998.
Smith, G. L., "Effects of time response on the point spread function of a scanning radiometer," Appl. Opt., 30, 7031-7037, 1994.
TRW DRL 64, 55067.300.008E; In-flight Measurement Analysis (Revision E), 18 March, 1997.
Dr. Bruce A. Wielicki
CERES Principal Investigator
Atmospheric Sciences Competency
NASA Langley Research Center
E-mail: b.a.wielicki@nasa.gov
Dr. Kory J. Priestley, Subsystem 2.0 Working Group Chair
Mail Stop 420
Atmospheric Sciences Competency
NASA Langley Research Center
Hampton, Virginia 23681-2199
USA
Telephone: (757) 864-8147
FAX: (757) 864-2671
E-mail: kory.j.priestley@nasa.gov
User and Data Services Office
Atmospheric Science Data Center
NASA Langley Research Center
Mail Stop 157D
Hampton, Virginia 23681-2199
USA
Telephone: (757) 864-8656
FAX: (757) 864-8807
E-mail: larc@eos.nasa.gov
URL: http://eosweb.larc.nasa.gov
Acknowledgment: The requested form of acknowledgment for any publication in which these data are used is:
"These data were obtained from the NASA Langley Research Center Atmospheric Science Data Center."
The Langley Data Center requests a reprint of any published papers or reports or a brief description of other uses (e.g., posters, oral presentations, etc.) of data that we have distributed. This will help the Data Center determine the use of data distributed, which is helpful in optimizing product development. It also helps us to keep our product related references current.
Reference: The CERES Team has gone to considerable trouble to remove major errors and to verify the quality and accuracy of these data. Please provide a reference to the following paper when you publish scientific results with the CERES data:
Wielicki, B. A., B. R. Barkstrom, E. F. Harrison, R. B. Lee III, G. L. Smith, and J. E. Cooper, "Clouds and the Earth's Radiant Energy System (CERES): An Earth Observing System Experiment," Bull. Amer. Meteor. Soc., 77, 853-868, 1996.
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