the ghrsst mission
DESCRIPTION
Towards a sustainable high-resolution SST measurement system Presented to CGMS-41 Working Group II, WGII/9 Misako Kachi, JAXA On behalf of the GHRSST Science Team. The GHRSST Mission. To provide operational users and the science community with SST measured by the satellite constellation - PowerPoint PPT PresentationTRANSCRIPT
GHRSST, V1, CGMS 41 July 2013
Coordination Group for Meteorological Satellites - CGMS
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Coordination Group for Meteorological Satellites - CGMS
Towards a sustainable high-resolution SST
measurement systemPresented to CGMS-41 Working Group II, WGII/9
Misako Kachi, JAXA
On behalf of the GHRSST Science Team
GHRSST, V1, CGMS 41 July 2013
Coordination Group for Meteorological Satellites - CGMS
Add CGMS agency logo here (in the slide master)
The GHRSST Mission
To provide operational users and the science community with SST measured by the satellite constellation
GHRSST provides a framework for SST knowledge and data sharing, best practices for data processing, assessing uncertainties in satellite SSTs, and a forum for scientific dialog including how best to provide
SSTs for climate studies, bringing SST to the operational users and scientific researchers.
GHRSST, V1, CGMS 41 July 2013
Coordination Group for Meteorological Satellites - CGMS
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GHRSST Overview
GHRSST, the Group for High Resolution Sea Surface Temperature grew out of a Pilot Project of the Global Ocean Data Assimilation Experiment (GODAE), 1997-2008.
Composed of a Science Team of researchers and operational practitioners. Coordinates research and operational developments in satellite-derived SST. Organized into Working Groups and Technical Advisory Groups focused on
particular problems or activities Data processing through Regional and Global Data Assembly Centers,
combining satellite and auxiliary fields into common data formats for ease of access and analysis.
Data are available in perpetuity at the GHRSST Long Term Stewardship and Reanalysis Facility at the NOAA National Oceanographic Data Center (http://ghrsst.nodc.noaa.gov).
See https://www.ghrsst.org/.
GHRSST, V1, CGMS 41 July 2013
Coordination Group for Meteorological Satellites - CGMS
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GHRSST Organisation
International GHRSST Science Team
User Requirements for high resolution Sea Surface Temperature data products and services from operational, scientific, and climate communities.
GHRSST-PO Project OfficeCoordinator
GHRSST Data Assembly and
Systems Technical Advisory Group
(GDAS-TAG)
SSES and Validation
Technical Advisory Group
(STVAL-TAG)
Diurnal Variation Working
Group (DV-WG)
Climate Data Record
Technical Advisory Group
(CDR-TAG)
High Latitude Technical Advisory
Group (HL-TAG)
Estimation Methods Working Group
(EARWiG)
Inter-comparisons
Technical Advisory Group
(IC-TAG)
Applications and User
Services TAG (AUS-TAG)
Inland Waters
Working Group (IW-
WG)
GHRSST Advisory Council
CEOS SST Virtual Constellation
(SST-VC)
GHRSST, V1, CGMS 41 July 2013
Coordination Group for Meteorological Satellites - CGMS
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GHRSST Strategy
SST system quality control and uncertainty estimation
AnalysisProduct
s Net
CD
F f
orm
at
Input SST data of Varied format
& with no uncertainty estimates
Datamerging
andanalysis
SST Obs.
Products Net
CD
F f
orm
at
Add ancillary
QC: SSES & dynamic
flags
SSTMeasurements
ApplicationsL3/L3P
L1 Radiance data
GHRSST, V1, CGMS 41 July 2013
Coordination Group for Meteorological Satellites - CGMS
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Primary GHRSST data flow
GHRSST, V1, CGMS 41 July 2013
Coordination Group for Meteorological Satellites - CGMS
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GHRSST exploits complementary data sources
• Polar Orbiting infrared has high accuracy & spatial resolution • Geostationary infrared has high temporal resolution• Microwave Polar orbiting has all-weather capability
DataMerging
• In situ data provide reality in all weather conditions
GHRSST, V1, CGMS 41 July 2013
Coordination Group for Meteorological Satellites - CGMS
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Recent changes to the SST measurement system
Loss of AMSR-E Main microwave radiometer - source of "all-weather" SSTs
Loss of AATSR AATSR was the most accurate, dual-view infrared radiometer, and its
replacement will not fly for a couple of years leaving a problematic gap Launch of Suomi-NPP VIIRS
VIIRS is the prototype of the next generation US imager for environmental satellites
Launch of GCOM-W1 AMSR-2 Next generation microwave radiometer
Launch of METOP-B AVHRR & IASI; launch of MSG-3 SEVIRI Operational imagers providing SSTs from European polar and geo satellites
GHRSST, V1, CGMS 41 July 2013
Coordination Group for Meteorological Satellites - CGMS
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Key issues of relevance to CGMS:
GHRSST takes users requirements from many communities, including, for example: The WMO Rolling Requirements Review (RRR) GODAE Ocean View and JCOMM ETOOFS GCOS GHRSST Science Team members
GHRSST then synthesises these requirements into a common set of: Measurement requirements for both space based and surface based
instrumentation Includes a gap analyses and list of priorities
Scientific and technical challenges for on-going R&D elements Drives the program of the working groups and technical advisory
groups
GHRSST, V1, CGMS 41 July 2013
Coordination Group for Meteorological Satellites - CGMS
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To be considered by CGMS: GHRSST (together with the CEOS SST-VC) is preparing a white paper: “Sea Surface
Temperature Constellation: Vision for 2025” As part of its gap analysis, GHRSST has identified several issues that need urgent
attention if a sustainable high resolution SST measurement system is to be provided for operational systems and science users
Issues that need urgent attention include: Redundant capability needed for microwave SST measurements after loss of
AMSR-E (e.g. addition of scanning microwave radiometer on HY-2 series to supplement AMSR-2)
Geostationary SST over the full Indian Ocean to support future coupled assimilation (e.g. relocate Meteosat-8)
Replacement ‘reference’ satellite SST dataset needed after loss of AATSR (e.g. high quality subset of METOP AVHRR)
Assistance from CGMS is sought to address these issues
In addition, GHRSST would like the CGMS to consider Adopting the GHRSST data format for all SST datasets under its purview Using existing GHRSST capability for serving SST datasets to users Collaboration in the preparation of the SST Vision for 2025