Clouds and the Earth's Radiant Energy System (CERES) Bidirectional Scans (BDS) Data Set Abstract |
This document provides a brief overview to the CERES BDS data set. For more detailed information about this product, see the CERES BDS Collection Guide (PDF).
The BiDirectional Scans (BDS) product contains 24 hours of instantaneous Level-1b CERES data for a single scanner instrument. The BDS contains instantaneous radiance measurements recorded every 0.01-second for views of space, internal calibration, solar calibration and Earth. It contains all elevation scan modes which include the normal Earth scan and the short Earth scan modes and both the fixed and rotating azimuth plane scan modes.
The BDS product includes:
Additional information about the format and content of the BDS can be found in the CERES Data Products Catalog (PDF). Details concerning the science parameters and how they are calculated can be found in the CERES Algorithm Theoretical Basis Document for Subsystem 1.0 and in the BDS Collection Guide (PDF).
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 CERES BDS 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 BDS Product |
---|---|---|---|
Aqua-FM3_Edition1-CV3 Aqua-FM4_Ed1-CV-NoSW3 |
033038 | 09/2008 |
|
Aqua-FM3_Edition23 Aqua-FM4_Ed2-NoSW3 |
032040 | 09/2008 |
|
Aqua-FM3_Edition1-CV3 Aqua-FM4_Ed1-CV-NoSW3 |
033034 | 01/2007 |
|
Aqua-FM3_Edition23 Aqua-FM4_Ed2-NoSW3 |
031036 | 01/2007 |
|
Aqua-FM3_Edition23 Aqua-FM4_Ed2-NoSW33 |
031035 | 04/2006 |
|
Aqua-FM3_Edition23 Aqua-FM4_Ed2-NoSW3 |
031034 | 01/2006 |
|
Aqua-FM3_Edition1-CV3 Aqua-FM4_Ed1-CV-NoSW3 |
033033 | 03/2006 |
|
Aqua-FM3_Edition23 Aqua-FM4_Edition23 |
031033 | 11/2005 |
|
Aqua-FM3_Edition13 Aqua-FM4_Edition13 |
032031 | 08/2005 |
|
Aqua-FM3_Edition23 Aqua-FM4_Edition23 |
030032 | 04/2005 |
|
Aqua-FM3_Edition13 Aqua-FM4_Edition13 |
031030 | 03/2005 |
|
Aqua-FM3_Edition23 Aqua-FM4_Edition23 |
029030 | 09/2004 |
|
Aqua-FM3_Edition13 Aqua-FM4_Edition13 |
030028 | 09/2004 |
|
Aqua-FM3_Edition23 Aqua-FM4_Edition23 |
028029 | 06/2004 |
|
Aqua-FM3_Edition23 Aqua-FM4_Edition23 |
028028 | 05/2004 |
|
Aqua-FM3_Edition13 Aqua-FM4_Edition13 |
029027 | 05/2004 |
|
Aqua-FM3_Edition23 Aqua-FM4_Edition23 |
028027 | 03/2004 |
|
Aqua-FM3_Edition13 Aqua-FM4_Edition13 |
027025 | 03/2004 |
|
Aqua-FM3_Edition13 Aqua-FM4_Edition13 |
027027 | 09/2003 |
|
Aqua-FM3_Edition13 Aqua-FM4_Edition13 |
027026 | 08/2003 |
|
Aqua-FM3_Edition13 Aqua-FM4_Edition13 |
026025 | 01/2003 |
|
Modification History for: Aqua | Terra | TRMM
Sampling Strategy and Production Strategy | CCode | Available at ASDC |
Impact on the BDS Product |
---|---|---|---|
Terra-FM1_Edition1-CV3 Terra-FM2_Edition1-CV3 |
033038 | 09/2008 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
032040 | 09/2008 |
|
Terra-FM1_Edition1-CV3 Terra-FM2_Edition1-CV3 |
033034 | 01/2007 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
031036 | 01/2007 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
031035 | 04/2006 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
031034 | 01/2006 |
|
Terra-FM1_Edition1-CV3 Terra-FM2_Edition1-CV3 |
033033 | 03/2006 |
|
Terra-FM1_Edition1-CV3 Terra-FM2_Edition1-CV3 |
033032 | 01/2006 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
031033 | 01/2006 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
032031 | 08/2005 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
030032 | 03/2005 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
031030 | 03/2005 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
029030 | 09/2004 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
030028 | 09/2004 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
028029 | 06/2004 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
028028 | 05/2004 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
029027 | 05/2004 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
028027 | 04/2004 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
027025 | 03/2004 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
027027 | 09/2003 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
026024 | 08/2003 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
025023 | 01/2003 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
026025 | 01/2003 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
025022 | 12/2003 |
|
Terra-FM1_Edition23 Terra-FM2_Edition23 |
024023 | 09/2002 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
024021 | 07/2002 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
022017 | 02/2002 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
021016 | 09/2001 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
018013 | 04/2001 |
|
Terra-FM1_Edition13 Terra-FM2_Edition13 |
017012 | 11/2000 |
|
Terra-FM1_Alpha Terra-FM2_Alpha |
014010 | 04/2000 04/2000 |
|
Modification History for: Aqua | Terra | TRMM
Sampling Strategy and Production Strategy | CCode | Available at ASDC |
Impact on the BDS Product |
---|---|---|---|
TRMM-PFM_Edition1-CV3 TRMM-PFM_Ed1-CV-TransOps3 |
033033 | 03/2006 |
|
TRMM-PFM_Edition13 TRMM-PFM_Transient-Ops23 TRMM-PFM_FailingSensor3 |
021016 | 09/2001 |
|
TRMM-PFM_Edition13 | 016011 | 08/2000 |
|
TRMM-PFM_Edition13 | 015011 | 07/2000 |
|
TRMM-PFM_Transient_Ops23 TRMM-PFM_Edition13 |
014010 | 11/1999 02/2000 |
|
TRMM-PFM_Edition13 | 011004 | 04/1999 |
|
TRMM-PFM_Edition13 | 009001 | 10/1998 |
|
TRMM-PFM_Edition13 | 008000 | 08/1998 |
|
TRMM-PFM_Edition13 | 007000 | 07/1998 |
|
TRMM-PFM_Edition13 | 006000 | 07/1998 |
|
TRMM-PFM_ValidationR12 | 000019 | 02/1998 |
|
TRMM-PFM_AtLaunch1 | 0016 | 12/1997 |
|
Examples of the January 1998 data contained in the BDS are shown below. Select thumbnail to view larger image.
Total Channel | Shortwave Channel | Window Channel |
Cross-track Scan Mode | Rotating Azimuth Plane Scan Mode |
See the CERES Instrument Home Page for additional information about instrument operations and daily statistics of engineering measurements.
Blackadar, Alfred, "A Computer Almanac," Weatherwise, 37 (5), 257-260, October 1984.
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.
CERES Instrument Geolocate and Calibrate Earth Radiances Level 1 Instrument Science Data Validation and Consistency Plan, Release 1.1, March 1996.
CERES Instrument Geolocate and Calibrate Earth Radiances Architectural Draft Design Document, (Subsystem 1.0) Release 1.0, June 1996.
Currey, C., L. Smith, B. Neely, "Evaluation of Clouds and the Earth's Radiant Energy System (CERES) scanner pointing accuracy using a coastline detection system," Proc. of SPIE, Earth Observing Systems III, 3439, 367-376, 1998.
HDF User's Guide, Version 4.0, February 1996 (from NCSA).
Hoffman, Lawrence H., Willliam L. Weaver, and James F. Kibler, "Calculation and Accuracy of ERBE Scanner Measurement Locations," NASA TP-2670, 1987.
Jefferys, William H., "Julian Day Numbers".
Priestley et al., "Postlaunch Radiometric Validation of the Clouds and the Earth's Radiant Energy System (CERES) Proto-Flight Model on the Tropical Rainfall Measuring Mission (TRMM) Spacecraft through 1999", J. Appl. Meteor., 39 (12), 2249-2258, 2000.
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., "Numberical Filtering of Spurious Transients in a Satellite Scanning Radiometer (Draft)", September 1997.
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.
TRW DRL 87, D20889B; Instrument Operations Manual, (Revision B), 11 January 1996.
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.
Obtain a Portable Document Format (PDF) reader: Adobe Acrobat Reader | PDF Reader software list