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World Climate Research Programme1

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1

Kevin TrenberthChair

WCRP Observation and Assimilation Panel

WCRP: WMO/IOC/ICSU

Kevin TrenberthChair

WCRP Observation and Assimilation Panel

WCRP: WMO/IOC/ICSU

Observations and their Analysisfor WCRP/COPES


TOR for WOAP:TOR for WOAP: paraphrased

Identify climate observational requirements Help optimize observations Act as a focal point for WCRP interactions with

other groups Promote and coordinate analysis, reprocessing,

reanalysis and assimilation Promote and coordinate information and data

management activities, including web sites.

Observations include those from space platforms.

TOR for WOAP:TOR for WOAP: paraphrased

Identify climate observational requirements Help optimize observations Act as a focal point for WCRP interactions with

other groups Promote and coordinate analysis, reprocessing,

reanalysis and assimilation Promote and coordinate information and data

management activities, including web sites.

Observations include those from space platforms.


WOAP-17/ Draft and send a letter on need to exploit

satellite data we already have and continue observational streams on behalf WCRP, signed by P. Lemke, to CEOS members and GEO co-chairs. Point out and endorse GCOS IP, WCRP needs, GEOSS links. Main points:

1) ensure the continuity of established capabilities;

2) need for continuity and homogeneity of observations for climate purposes;

3) need for more attention to data synthesis, reprocessing, analysis and re-analysis of existing data sets; and

4) recognition of the need for a complementary in situ observation strategy.

Done 30 JuneResponse received 15 August (not satisfactory)

WOAP-17/ Draft and send a letter on need to exploit

satellite data we already have and continue observational streams on behalf WCRP, signed by P. Lemke, to CEOS members and GEO co-chairs. Point out and endorse GCOS IP, WCRP needs, GEOSS links. Main points:

1) ensure the continuity of established capabilities;

2) need for continuity and homogeneity of observations for climate purposes;

3) need for more attention to data synthesis, reprocessing, analysis and re-analysis of existing data sets; and

4) recognition of the need for a complementary in situ observation strategy.

Done 30 JuneResponse received 15 August (not satisfactory)


Key points are:1) We are not inventing new requirements2) We are, however, trying to help establish priorities and to sharpen those:

•Continuity, continuity continuity:•Needed in any strategy for future•Reprocessing and reanalysis of past data•Calibration, accuracy, benchmarks, in situ

3) Especially at risk now with NPOESS cuts in longer term.


WOAP-1Reanalyses

•Establish a clearing house for reanalyses •Develop strategy of staggering analyses, coordination

•Advocacy•Progress in building the basic dataset •Document rationale for reanalyses: atmosphere, ocean, land, ice, stratosphere, coupled. (Report written)

•Merits, benefits, exploitation of new data

•Explore proposal for a reanalysis workshop to be held at ECMWF end of June 2006.

•Reanalyses Conference: A proposal to hold the next major reanalysis conference in Japan in fall 2007 was passed on and approved. Topics will include: Atmosphere, ocean, coupled

WOAP-1Reanalyses

•Establish a clearing house for reanalyses •Develop strategy of staggering analyses, coordination

•Advocacy•Progress in building the basic dataset •Document rationale for reanalyses: atmosphere, ocean, land, ice, stratosphere, coupled. (Report written)

•Merits, benefits, exploitation of new data

•Explore proposal for a reanalysis workshop to be held at ECMWF end of June 2006.

•Reanalyses Conference: A proposal to hold the next major reanalysis conference in Japan in fall 2007 was passed on and approved. Topics will include: Atmosphere, ocean, coupled


The underlying data base is not constant, and changes disrupt the climate record.

There is no baseline reference network to anchor the data

Radiosondes improve and change type over time Satellites only after 1979, last order 5 years, drift in

orbit, change instruments, calibration Bias corrections are applied but remain imperfect Continuity is a key issue, especially for climate

change Further technological development, change and

improvement is expected. Major challenge is to deal with changing

observations

The underlying data base is not constant, and changes disrupt the climate record.

There is no baseline reference network to anchor the data

Radiosondes improve and change type over time Satellites only after 1979, last order 5 years, drift in

orbit, change instruments, calibration Bias corrections are applied but remain imperfect Continuity is a key issue, especially for climate

change Further technological development, change and

improvement is expected. Major challenge is to deal with changing

observations

Reanalysis:

The chief outstanding issue:


Conclusion:

Internationally-coordinated reanalysis activities need to be enhanced and sustained by the involved Parties to meet the requirements for monitoring climate trends, to establish ocean reanalysis for the recent satellite era, and to include variables related to atmospheric composition and other aspects of climate forcing.

From: Executive Summary of“The Second Report on the Adequacy of The Global Observing Systems for Climate in Support of the UNFCCC”.

Conclusion:

Internationally-coordinated reanalysis activities need to be enhanced and sustained by the involved Parties to meet the requirements for monitoring climate trends, to establish ocean reanalysis for the recent satellite era, and to include variables related to atmospheric composition and other aspects of climate forcing.

From: Executive Summary of“The Second Report on the Adequacy of The Global Observing Systems for Climate in Support of the UNFCCC”.


WOAP-1Reprocessing: assess variables for need and readiness, and commitments. Include in GEOSS.

5 Principles for Re-Processing Climate Data Records

For climate, the value of an observational record increases with time, provided that the record is continuous and homogeneous.

As datasets are used, characteristics of the data and problems are exposed, and often solutions to problems or algorithm improvements are proposed. This is especially the case for satellite measurements.

Accordingly, re-processing of the record should be an integral part of the process of creating a climate data record.

WOAP-1Reprocessing: assess variables for need and readiness, and commitments. Include in GEOSS.

5 Principles for Re-Processing Climate Data Records

For climate, the value of an observational record increases with time, provided that the record is continuous and homogeneous.

As datasets are used, characteristics of the data and problems are exposed, and often solutions to problems or algorithm improvements are proposed. This is especially the case for satellite measurements.

Accordingly, re-processing of the record should be an integral part of the process of creating a climate data record.


WOAP-1

Task group on data assimilation has written a short report on issues to be taken up by WOAP:separate data assimilation activities occur in GEWEX, CLIVAR, SPARC and CLIC. Issue of resolution of DA models and full utilization of satellite data.

The data management task group will review existing WCRP web structure and sites, and make recommendations for WCRP-wide over-arching structure and site contents. The data management task group will propose a data policy for WCRP based on existing project documents.

http://copes.ipsl.jussieu.fr/Organization/COPESStructure/WGOA.html

WOAP-1

Task group on data assimilation has written a short report on issues to be taken up by WOAP:separate data assimilation activities occur in GEWEX, CLIVAR, SPARC and CLIC. Issue of resolution of DA models and full utilization of satellite data.

The data management task group will review existing WCRP web structure and sites, and make recommendations for WCRP-wide over-arching structure and site contents. The data management task group will propose a data policy for WCRP based on existing project documents.

http://copes.ipsl.jussieu.fr/Organization/COPESStructure/WGOA.html


CliC Climate and Cryosphere http://clic.npolar.no/

CliC > CIPO CliC International Project Office http://clic.npolar.no/org/cipo.php

CliC > SSG Scientific Steering Group http://clic.npolar.no/org/ssg.php

CliC > ACP Arctic Climate Panel http://clic.npolar.no/org/acp.php

CliC > DMIP Data Management and Information Panel http://clic.npolar.no/org/dmip.php

CliC > NEG Numerical Experimentation Group http://clic.npolar.no/org/neg.php

CliC > OPP Observation Products Panel http://clic.npolar.no/org/opp.php

CLIVAR Climate Variability and Predictability Programme http://www.clivar.org/

CLIVAR > GOALS Global Ocean Atmosphere Land System http://www.clivar.org/organization/streams.htm#GOALS

CLIVAR > DecCen Decadal-to-Centennial http://www.clivar.org/organization/streams.htm#DECCEN

CLIVAR > ACC Anthropogenic Climate Change http://www.clivar.org/organization/streams.htm#ACC

CLIVAR > SSG Scientific Steering Group http://www.clivar.org/organization/ssg/

CLIVAR > GSOP Global Synthesis & Observations Panel http://www.clivar.org/organization/gsop/

CLIVAR/PAGES > Working Group http://www.clivar.org/organization/pages/

CCI/CLIVAR > ETCCDMI Expert Team on Climate Change Detection, Monitoring and Indices

http://www.clivar.org/organization/etccd/

CLIVAR > WGSIP Working Group on Seasonal to Interannual Prediction http://www.clivar.org/organization/wgsip/

JSC/CLIVAR > WGCM Working Group on Coupled Modelling http://www.clivar.org/organization/wgcm/

CLIVAR > WGOMD Working Group on Ocean Model Development http://www.clivar.org/organization/wgomd/

CLIVAR > AAMP Asian-Australian Monsoon Panel http://www.clivar.org/organization/aamon/

CLIVAR > VAMOS Variability of the American Monsoon Systems http://www.clivar.org/organization/vamos/

CLIVAR > VACS Variability of the African Climate System http://www.clivar.org/organization/africa/vacs.htm

CLIVAR > Atlantic Panel http://www.clivar.org/organization/atlantic/

CLIVAR > Pacific Panel http://www.clivar.org/organization/pacific/

CLIVAR > Indian Ocean Panel http://www.clivar.org/organization/indian/

CLIVAR/CliC > SOIP Southern Ocean Implementation Panel http://www.clivar.org/organization/southern/

CLIVAR > ICPO International CLIVAR Project Office http://www.clivar.org/organization/icpo/


GEWEX Global Energy and Water Cycle Experiment http://www.gewex.org/

GEWEX > GHP GEWEX Hydrometeorology Panel http://ecpc.ucsd.edu/projects/ghp/

GEWEX > GHP > DMWG Data Management Working Group http://www.joss.ucar.edu/ghp/

GEWEX > GHP > SWING Stable Water Isotope Intercomparison Group http://www.bgc-jena.mpg.de/bgc-synthesis/projects/SWING/

GEWEX > GHP > TWG Transferability Working Group http://rcmlab.agron.iastate.edu/twg/

GEWEX > GHP > WEBS Water and Energy Budget Studies http://ecpc.ucsd.edu/projects/ghp/

GEWEX > GHP > WISE Worldwide Integrated Study of Extremes http://www.meteo.mcgill.ca/wise/

GEWEX > GHP > WRAP Water Resources Applications Project http://ecpc.ucsd.edu/projects/ghp/Wrap_web/

GEWEX > GHP > AMMA African Monsoon Multidisciplinary Analysis http://www.amma-international.org/

GEWEX > GHP > BALTEX Baltic Sea Experiment http://w3.gkss.de/baltex/

GEWEX > GHP > GAME GEWEX Asian Monsoon Experiment http://www.hyarc.nagoya-u.ac.jp/game/

GEWEX > GHP > MAHASRI Monsoon Asian Hydro-Atmospheric Science Research and predictio

GEWEX > GHP > GAPP GEWEX Americas Prediction Project http://www.ogp.noaa.gov/mpe/gapp/

GEWEX > GHP > LBA Large-Scale Biosphere-Atmosphere Experiment in Amazonia http://lba.cptec.inpe.br/lba/

GEWEX > GHP > LPB La Plata Basin http://www.joss.ucar.edu/platin/

GEWEX > GHP > MAGS Mackenzie GEWEX Study http://www.usask.ca/geography/MAGS/

GEWEX > GHP > MDB Murray-Darling Basin http://www.gewex.org/mdb.html

GEWEX > GRP GEWEX Radiation Panel http://grp.giss.nasa.gov/

GEWEX > GRP > BSRN Baseline Surface Radiation Network http://www.gewex.org/bsrn.html

GEWEX > GRP > GACP Global Aerosol Climatology Project http://gacp.giss.nasa.gov/

GEWEX > GRP > GPCP Global Precipitation Climatology Project http://cics.umd.edu/~yin/GPCP//main.html

GEWEX > GRP > GVaP Global Water Vapor Project http://www.gewex.org/gvap.html

GEWEX > GRP > ISCCP International Satellite Cloud Climatology Project http://isccp.giss.nasa.gov/

GEWEX > GRP > SRB Surface Radiation Budget http://srb-swlw.larc.nasa.gov/Pilot_homepage.html

GEWEX > GMPP GEWEX Modeling and Prediction Panel

GEWEX > GMPP > GABLS GEWEX Atmospheric Boundary Layer Study http://www.met.wau.nl/projects/Gabls/

GEWEX > GMPP > GCSS GEWEX Cloud System Study http://www.gewex.org/gcss.html

GEWEX > GMPP > GLASS Global Land Atmosphere System Study http://hydro.iis.u-tokyo.ac.jp/GLASS/

GEWEX > GMPP > GLASS > ALMA Assistance for Land-surface Modelling activities http://www.lmd.jussieu.fr/ALMA/

GEWEX > GMPP > GLASS > GLACE Global Land-Atmosphere Coupling Experiment http://glace.gsfc.nasa.gov/

GEWEX > GMPP > GLASS > GSWP-2 Global Soil Wetness Project http://grads.iges.org/gswp/

GEWEX > GMPP > GLASS > PILPS Project for Intercomparison of Land-surface Parmeterization http://www.cic.mq.edu.au/pilps-rice/


SPARC Stratospheric Processes And their Role in Climate http://www.atmosp.physics.utoronto.ca/SPARC/

SPARC / IPO International Project Office http://www.atmosp.physics.utoronto.ca/SPARC/office.html

SPARC / SSG Scientific Steering Group http://www.atmosp.physics.utoronto.ca/SPARC/ssg.html

WGNE Working Group on Numerical Experimentation http://www.wmo.ch/web/wcrp/wgne.htm

WGNE / AMIP Atmospheric Model Intercomparison Project http://www-pcmdi.llnl.gov/projects/amip/

WGCM Working Group on Coupled Modelling http://www.wmo.ch/web/wcrp/wgcm.htm

WGSF Working Group on Surface Fluxes http://www.wmo.ch/web/wcrp/wgsf.htm

CEOP Coordinated Enhanced Observing Period http://monsoon.t.u-tokyo.ac.jp/ceop/

Reanalysis Centres

AOPC Atmospheric Observation Panel for Climate http://www.wmo.ch/web/gcos/aopc.htm

OOPC Ocean Observations Panel for Climate http://www.wmo.ch/web/gcos/oopc.htm

TOPC Terrestrial Observation Panel for Climate http://www.wmo.ch/web/gcos/topc.htm

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