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CEOS Cal Val Test Site - La Crau, France - Instrumented Site

Entry ID: CEOS_CalVal_Test_Site-La_Crau-France

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Summary

Abstract: On the background of these requirements for sensor calibration, intercalibration and product validation, the subgroup on Calibration and Validation of the Committee on Earth Observing System (CEOS) formulated the following recommendation during the plenary session held in China at the end of 2004, with the goal of setting-up and operating an internet based system to provide sensor data, protocols ... and guidelines for these purposes:

Background:

Reference Datasets are required to support the understanding of climate change and quality assure operational services by Earth Observing satellites. The data from different sensors and the resulting synergistic data products require a high level of accuracy that can only be obtained through continuous traceable calibration and validation activities.
Requirement:

Initiate an activity to document a reference methodology to predict Top of Atmosphere (TOA) radiance for which currently flying and planned wide swath sensors can be intercompared, i.e. define a standard for traceability. Also create and maintain a fully accessible web page containing, on an instrument basis, links to all instrument characteristics needed for intercomparisons as specified above, ideally in a common format. In addition, create and maintain a database (e.g. SADE) of instrument data for specific vicarious calibration sites, including site characteristics, in a common format. Each agency is responsible for providing data for their instruments in this common format. Recommendation : The required activities described above should be supported for an implementation period of two years and a maintenance period over two subsequent years. The CEOS should encourage a member agency to accept the lead role in supporting this activity. CEOS should request all member agencies to support this activity by providing appropriate information and data in a timely manner.

Instrumented Sites:
La Crau, France is one of eight instrumented sites that are CEOS Reference Test Sites. The CEOS instrumented sites are provisionally being called LANDNET. These instrumented sites are primarily used for field campaigns to obtain radiometric gain, and these sites can serve as a focus for international efforts, facilitating traceability and inter-comparison to evaluate biases of in-flight and future instruments in a harmonized manner. In the longer-term it is anticipated that these sites will all be fully automated and provide surface and atmospheric measurements to the WWW in an autonomous manner reducing some of the cost of a manned campaign, at present three can operate in this manner.

Purpose: To facilitate and coordinate calibration and validation data over the La Crau, France test site.

Related URL

Link: VIEW PROJECT HOME PAGE

Description: Committee on Earth Observation Satellites (CEOS) Working Group on Calibration and Validation (WGCV) Test Sites.

Geographic Coverage

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Spatial coordinates

N: 45.63

S: 41.86

E: 6.49

W: 1.92

Temporal Coverage

Start Date: 1972-08-16

Location Keywords

CONTINENT > EUROPE > WESTERN EUROPE > FRANCE

Science Keywords

LAND SURFACE > LAND TEMPERATURE

LAND SURFACE > LAND USE/LAND COVER

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

IMAGERY/BASE MAPS/EARTH COVER

Platform

ENVISAT > Environmental Satellite

ERS-1 > European Remote Sensing Satellite-1

Project

EOSDIS > Earth Observing System Data Information System

ESIP > Earth Science Information Partners Program

Ancillary Keywords

SLP

Data Set Progress

IN WORK

Data Center

Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA

Data Center URL: http://disc.gsfc.nasa.gov/

Data Center Personnel
Name: GES DISC HELP DESK SUPPORT GROUP Phone: 301-614-5224 Fax: 301-614-5268 Email: gsfc-help-disc at lists.nasa.gov Contact Address: Goddard Earth Sciences Data and Information Services Center Code 610.2 NASA Goddard Space Flight Center City: Greenbelt Province or State: MD Postal Code: 20771 Country: USA

Distribution

Distribution Media: Online (FTP)

Distribution Size: 546 MBytes

Distribution Format: HDF-EOS (Grid)

Fees: Free

Personnel

GLOBAL MODELING AND ASSIMILATION OFFICE

Role: TECHNICAL CONTACT

Phone: 301-614-6142

Email: data at gmao.gsfc.nasa.gov

Contact Address:

NASA Goddard Space Flight Center

Code 610.1

City: Greenbelt

Province or State: MD

Postal Code: 20771

Country: USA

Publications/References

* Bloom, S., L. Takacs, A. DaSilva, and D. Ledvina, 1996: Data assimilation using incremental analysis updates. Mon. Wea. Rev., 124, 1256-1271.

* Bloom, S., A. da Silva, D. Dee, M. Bosilovich, J.-D. Chern, S. Pawson, S. Schubert, M. Sienkiewicz, I. Stajner, W.-W. Tan, M.-L. Wu, 2005: Documentation and Validation of the ...

Extended Metadata Properties

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Creation and Review Dates

DIF Creation Date: 2007-06-14

Last DIF Revision Date: 2010-08-09

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