CEOS Cal Val Test Site - Dunhuang, China - Instrumented Site
Entry ID: CEOS_CalVal_Test_Site-Dunhuang-China

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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:
Dunhuang, China, 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 Dunhuang, China 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
 N: 41.45 S: 39.0  E: 96.52  W: 91.98

Temporal Coverage
Start Date: 1975-04-15


Location Keywords
CONTINENT > ASIA > EASTERN ASIA > CHINA


Science Keywords
LAND SURFACE >LAND TEMPERATURE    [Definition]
LAND SURFACE >LAND USE/LAND COVER    [Definition]
LAND SURFACE >SURFACE RADIATIVE PROPERTIES    [Definition]
LAND SURFACE >SURFACE RADIATIVE PROPERTIES >REFLECTANCE    [Definition]
LAND SURFACE >SURFACE RADIATIVE PROPERTIES >THERMAL PROPERTIES    [Definition]
SPECTRAL/ENGINEERING >SENSOR CHARACTERISTICS    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
IMAGERY/BASE MAPS/EARTH COVER


Platform
ENVISAT >Environmental Satellite    [Information]
ERS-1 >European Remote Sensing Satellite-1    [Information]
ERS-2 >European Remote Sensing Satellite-2    [Information]
PROBA-1 >Project for On-Board Autonomy, PROBA-1    [Information]
METOP-A >Meteorological Operational Satellite - A    [Information]
METEOSAT-7    [Information]
AQUA >Earth Observing System, AQUA    [Information]
TERRA >Earth Observing System, TERRA (AM-1)    [Information]
EO-1 >Earth Observing 1    [Information]
SEASTAR >Orbital Sciences Corporation OrbView-2 Satellite    [Information]
IMS-1 >Indian Mini Satellite-1    [Information]
SPOT-1 >Systeme Probatoire Pour l'Observation de la Terre-1    [Information]
SPOT-2 >Systeme Probatoire Pour l'Observation de la Terre-2    [Information]
SPOT-3 >Systeme Probatoire Pour l'Observation de la Terre-3    [Information]
SPOT-4 >Systeme Probatoire Pour l'Observation de la Terre-4    [Information]
SPOT-5 >Systeme Probatoire Pour l'Observation de la Terre-5    [Information]
CALIPSO >Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations    [Information]
NOAA POES >NOAA Polar Orbiting Environmental Satellites    [Information]
NOAA-10 >National Oceanic & Atmospheric Administration-10    [Information]
NOAA-11 >National Oceanic & Atmospheric Administration-11    [Information]
NOAA-12 >National Oceanic & Atmospheric Administration-12    [Information]
NOAA-13 >National Oceanic & Atmospheric Administration-13    [Information]
NOAA-14 >National Oceanic & Atmospheric Administration-14    [Information]
NOAA-15 >National Oceanic & Atmospheric Administration-15    [Information]
NOAA-16 >National Oceanic & Atmospheric Administration-16    [Information]
NOAA-17 >National Oceanic & Atmospheric Administration-17    [Information]
NOAA-18 >National Oceanic & Atmospheric Administration-18    [Information]
NOAA-19 >National Oceanic & Atmospheric Administration-19    [Information]
NOAA-1 >National Oceanic & Atmospheric Administration-1    [Information]
NOAA-2 >National Oceanic & Atmospheric Administration-2    [Information]
NOAA-3 >National Oceanic & Atmospheric Administration-3    [Information]
NOAA-4 >National Oceanic & Atmospheric Administration-4    [Information]
NOAA-5 >National Oceanic & Atmospheric Administration-5    [Information]
NOAA-6 >National Oceanic & Atmospheric Administration-6    [Information]
NOAA-7 >National Oceanic & Atmospheric Administration-7    [Information]
NOAA-8 >National Oceanic & Atmospheric Administration-8    [Information]
NOAA-9 >National Oceanic & Atmospheric Administration-9    [Information]
DMSP 5D-3/F18 >Defense Meteorological Satellite Program-F18    [Information]
NPOESS (National Polar-orbiting Operational Environmental Satellite System )
ALOS >Advanced Land Observing Satellite    [Information]
MONITOR-E    [Information]
LANDSAT-5    [Information]
LANDSAT-7    [Information]
CBERS-2B >China-Brazil Earth Resource Satellite 2B    [Information]
UK-DMC    [Information]
SAC-C >Satelite de Aplicaciones Cientifico - C    [Information]
KOMPSAT-2    [Information]
RAPIDEYE >RapidEye    [Information]
BEIJING-1    [Information]
THEOS >Thai Earth Observation System    [Information]
MTSAT-2


Instrument
AATSR >Advanced Along-Track Scanning Radiometer    [Information]
ATSR >Along Track Scanning Radiometer and Microwave Sounder    [Information]
PROBA.CHRIS.1A >PROBA CHRIS Level 1A    [Information]
IASI >Infrared Atmospheric Sounding Interferometer    [Information]
MERIS >Medium Resolution Imaging Spectrometer    [Information]
SEVIRI >Spinning Enhanced Visible and Infrared Imager    [Information]
GERB >Geostationary Earth Radiation Budget    [Information]
AMSR-E >Advanced Microwave Scanning Radiometer-EOS    [Information]
ASTER >Advanced Spaceborne Thermal Emission and Reflection Radiometer    [Information]
HYPERION >HYPERSPECTRAL IMAGER    [Information]
MISR >Multi-Angle Imaging SpectroRadiometer    [Information]
MODIS >Moderate-Resolution Imaging Spectroradiometer    [Information]
SEAWIFS >Sea-Viewing Wide Field-of-View Sensor    [Information]
CERES-FM1 >Clouds and the Earth's Radiant Energy System - Flight Model 1    [Information]
CERES-FM2 >Clouds and the Earth's Radiant Energy System - Flight Model 2    [Information]
AWIFS >Advanced Wide Field Sensor    [Information]
LISS-IV >Linear Imaging Self Scanning Sensor IV    [Information]
PALMS >Particle Analysis by Laser Mass Spectrometry    [Information]
MX-T >Mx Multispectral Camera    [Information]
ISAMS >Improved Stratospheric And Mesospheric Sounder    [Information]
OCM >OCEAN COLOR MONITOR
HRG-1 >High Resolution Geometrical Instrument    [Information]
HRG-2 >High Resolution Geometrical Instrument    [Information]
IIR >Imaging Infrared Radiometer    [Information]
VEGETATION-1 >VEGETATION INSTRUMENT 1 (SPOT 4)    [Information]
VEGETATION-2 >VEGETATION INSTRUMENT 2 (SPOT 5)    [Information]
AVHRR >Advanced Very High Resolution Radiometer    [Information]
OLS >Operational Linescan System    [Information]
VIIRS >Visible-Infrared Imager-Radiometer Suite    [Information]
AVNIR >Advanced Visible and Near-Infrared Radiometer    [Information]
POLDER-1 >Polarization/Directionality of the Earth's Reflectance-1    [Information]
PRISM >Panchromatic Remote-sensing Instrument for Stereo Mapping    [Information]
ETM+ >Enhanced Thematic Mapper Plus    [Information]
TM >Thematic Mapper    [Information]
WFI (CBERS 1,2) >Wide Field Imager    [Information]
SLIM-6 >SLIM-6 Imager    [Information]
CCD (CBERS 2B)
BJ-1 MSI >BJ-1 Multispectral Imager    [Information]
THEOS MSI >THEOS Multi Spectral Imager
CPI >Cloud Particle Imager    [Information]
MTSAT 2 Imager


Project
CWIC >CEOS WGISS Integrated Catalog    [Information]


Access Constraints
No restrictions.


Use Constraints
None.


Data Center
Earth Resources Observation and Science Center, U.S. Geological Survey, U.S. Department of the Interior    [Information]
Data Center URL: http://eros.usgs.gov/

Data Center Personnel
Name: GREG STENSAAS
Phone: 605-594-2569
Fax: 605-594-6906
Email: stensaas at usgs.gov
Contact Address:
U.S. Geological Survey, 47914-252nd Street
City: Sioux Falls
Province or State: SD
Postal Code: 57198
Country: USA



Creation and Review Dates
DIF Creation Date: 2012-09-12
Last DIF Revision Date: 2013-05-13

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