Peter van Oevelen
Kevin Trenberth
GEWEX-SSG and Panel Chairs

Domains
Regional
Global
Integrated
/ coupled
Theory
Coordinated
Energy and
Observations
Observations
Project
GEWEX
Modelling
Panel
GEWEX achieves its goals through data set development and analysis, process studies and model improvement
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GRP
- Radiative processes and understanding
- Global Data sets on radiative and turbulent fluxes
- Global In-situ observational networks, development and standardization (BSRN, Soil Moisture)
- Development and improvement of radiative transfer codes
- Intercomparison studies and assessment
http://www.gewex.org/projects-GRP.htm
CEOP
-Globally distributed extensive regional data sets covering water and energy cycle observations (in situ and space borne and modeling data)
- Data management system / GEO Prototype for Water Cycle Observations
- Regional Climate Modeling and Process Descriptions (Monsoons, Extremes, etc)
- Hydrological Applications and Forecasting ( Drought monitoring, Hydrological Ensemble Predictions…)
- Coupling with Global Modeling and Global Data sets (GRP and GMPP)
-http://www.gewex.org/projects-CEOP.htm
GMPP
- Model Parameterization and development from land surface process to atmospheric processes
- Cloud process descriptions, parameterizations and model, data sets and tools, intercomparison studies
- Atmospheric Boundary layer studies, descriptions and intercomparison studies (diurnal cycle)
-
Strong cooperation with Numerical Prediction Centers and weather forecasting “through” WGNE
- Land surface feed back/coupling studies
http://www.gewex.org/projects-GMPP.htm
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• Successful conference and side events in
Melbourne (with IGBP-iLEAPS)
• IGPO Funding (NASA) approved for another 5 years
• SSG-Chair resigned early 2010
• Planning of PAN-GEWEX meeting in 2010
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• 21 st GEWEX SSG , UC Irvine, January
• 3 rd ISMWG Meeting , Lisbon, Portugal, March
• GEWEX International Symposium on Global Land-surface Evaporation and
Climate
– July 13-14, 2009 at the at the Centre for Ecology and Hydrology (CEH), Wallingford, UK.
• 6 th International GEWEX Science Conference , Melbourne, Australia , 24–28
August
– Almost 400 scientists from 32 countries, 150 oral and 250 poster presentations
– Held in parallel with the 2 nd Integrated Land Ecosystem-Atmosphere Study (iLEAPS) Science
Conference.
– Water in a Changing Climate—Progress in Land-Atmosphere Interactions and Energy/Water Cycle
Research,
– Side events: Early Career Scientists Workshop, GLASS and LandFlux WG Meetings
• Water Cycle Science Conference organized by by GEWEX, ESA, EGU and ISPRS.
– The meeting was held at ESA's Earth Observation Centre (ESRIN) in Frascati, Italy, 18-20 November
– Nearly 200 scientists from more than 30 countries
• Sponsored Milankovitch Symposium (September, Belgrade, Serbia)
• 3 GEWEX Panel Meetings (CEOP, GMPP, GRP)
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What is a GRP Product?
A GRP product is endorsed by GEWEX/GRP to conform to a high standard of production and documentation. It consists of a blend of available satellite and in-situ observations and is periodically compared and assessed against other products in an open and transparent fashion.
It is openly available to everyone without restrictions.
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GRP Status - Activities - Plans
Clouds ISCCP
Cloud Assessment
Radiation SRB
Surface reference observations BSRN
Radiation Assessment
Aerosols GACP
Aerosol Assessment
Precipitation GPCP
Sfc gauge obs moved to CEOP (GPCC)
First Assessment is published
Turbulent Fluxes
SeaFlux
LandFLux
- Soil Moisture (Global In-Situ SM Network)
 The Merged Product
Radiative transfer - Model Intercomparisons CIRC
Radiative transfer model development - 3D
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Cloud amount
79 08
98 05
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Want to finish by 2013: The list from 2009
 Prepare for reprocessing of products
 Develop roadmap for transition to operations SCOPE-CM
Sustained Coordinated Processing of Environmental Satellite Data for Climate Monitoring
 Produce first multi-product dataset to promote Water and Energy closure studies. LandFlux making great strides
 Revisit need for a GEWEX Water Vapor product
 Expand tools (e.g. ISCCP simulator) for broad use.
-Working w. GFDL for TRMM simulator
 Continue to promote improvements in polar regions
- Proceeding with inventory of available data from CLIC vs data needs from GRP.
 Cloud/Aerosol/Precipitation initiatives
- Proceeding slowly due to VISA issues. Generally an ARM sites to global concept.
 Data Stewardship GSICS/SDS Global Space-based InterCalibration System
 Use White Papers to articulate GRP positions
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C oordinated E nergy and water cycle
O bservations P roject .
CEOP ACHIEVEMENTS 2009-
• A multimodel analysis published.
• Cold Regions Study and several RHPs are now coordinating activities with CliC.
• CEOP data used to bridge gap between the global and regional aspects and integrated with WCRP initiated COordinated Regional climate Downscaling
EXperiment (CORDEX).
• Contributed to AMMA 3 rd International Conference in Burkina Faso, July 20-24
2009. A new AMMA point of contact named.
• Modelling studies include explicit global, regional, land surface, and Hydrologic
Applications Project (HAP) efforts.
• Hydrological Applications Project (HAP) addresses
– Seasonal forecasting, mainly drought, with Hydrologic Ensemble Prediction Experiment (HEPEX), and
– Flood prediction and Climate change impact analyses in cooperation with GEOSS/AWCI.
• CEOP Datasets utilized in an NCEP model validation analysis and applied in an international satellite soil moisture algorithm intercomparison project.
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• Promotes evolution of Regional Hydroclimate Projects:
– biological/environmental aspects
– anthropogenic climate focus ,
– longer term, exploiting the infrastructures of the RHPs.
• Seeks to enhance integration of in-situ, satellite and model data.
• Includes Monsoons Regional Study and Pan-WCRP Monsoon crosscut on
– regional studies in cold regions,
– high elevations,
– monsoon, and
– semi-arid regions.
• Focus on Water and Energy budgets, 2002 out to 2013 and beyond.
– extremes
– aerosols
– water isotopes
• Hydrologic Applications Project (HAP): explicit global, regional, land surface, and hydrologic applications; cooperating with Hydrologic
Ensemble Prediction Experiment (HEPEX).
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continued
• Contributes to CMIP activities through its connections with
PCMDI:
– The CEOP element of the Japanese national Data and Integration and
Analysis System (DIAS) will continue to hold the CIMP-3 data (3 hourly data from 5 models) for efficient use by the Hydrological Research Community) ;
– 10 year dataset
– CIMP-5 subset of data
• By 2012, a functioning CEOP data center.
• CEOP data management strengthen links to Global Runoff
Data Centre and Global Precipitation Climatology Centre
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land-atmosphere coupling
LUCID
Coordinated
LDAIP model data fusion
LoCo
GLACE2 metrics benchmarking
LandFlux
A new
GLASS for
PILPS-Urban
SnowMIP
RAMI4PILPS better support of community
PILPS-Carbon 2 activities current projects new projects

GLACE-2 clarifies influence of the land surface on seasonal prediction skill
GCSS process studies build strong links to other communities:
Over 300 researchers
Simplified models i.e. aquaplanets
Direct Numerical Simulation
COLA NCEP
Single Column
Models
Climate Models
NWP Models Model Projections
Large Eddy Simulation
ECMWF-coupled ECMWF-AMIP
NCAR FSU
Field Campaigns Instrumented Sites Global Observational
Data sets
Analysis & Understanding
Model results vary: impact of land surface initialization only for large anomalies

• GMPP remains the expert panel on atmospheric and land surface process studies
• Integrate process-level experience in WCRPwide activities with more focus on science questions than division by components, e.g.,
CHFP <-> GLACE2; CFMIP <-> GCSS
• Promote model diagnosis and development
• For longer term see GEWEX imperatives!

• Landflux: GRP, GLASS, iLEAPS
• GSWP-3: GLASS, CEOP, GRP
• Plans for an extensive project on model diagnostics are under development
– Goal: make GEWEX observational expertise (incl. obs themselves) more relevant to model development: GMPP, GRP, CEOP
• RHP Regional Obs. To be used for GRP Global
Data sets assessments
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Priorities Over the Next 5+ years
JSC Cross Cut - Monsoons in a changing climate
GEWEX and CLIVAR to form a task force to develop plans to analyze CMIP5 results with respect to monsoons in a changing climate
(Goswami (lead) with Wu and Semazzi, GEWEX and CLIVAR IPOs)
Set up a GEWEX/CLIVAR WG:
1.
Review current WCRP activities on monsoons in a changing climate.
B.N. Goswami (JSC)
Bin Wang (CLIVAR)
Jun Matsumoto
(GEWEX)
In- Sik Kang
Akio Kitoh
Fred Semazzi
Carolina Vera
Secretariat (GEWEX/CLIVAR)
Meeting of opportunity (Goswami/Wu at AMY meeting, Kunming)
More to be added.
Terms of Reference established:
White paper
Organize Workshop
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WCRP Extremes
Goals
• To summarize, compare and assess definition(s) of climate extremes and develop a common language amongst researchers and end users.
• To design an intercomparison framework through which both observations, model representations of extremes & projections of climate can be assessed & by which changes in climate extremes can be better evaluated.
• To accelerate progress on the prediction of climate extremes with a focus on developing capabilities and products which facilitate practical applications for stakeholders (end users/constituents) & regions around the world.
• To assess and improve the observational and dataset framework for study of global extremes
• To determine how extremes are changing and varying and why
(including their relationship to mean variables, physical factors, shape of pdf etc).

WCRP Extremes Status and Actions
• Initial Focus: Drought (then maybe Heavy Precipitation…)
DIG – Drought Interest Group
: David Legler, Siegfried Schubert, Robert Mechoso,
Ronald Stewart Peter van Conference Oevele With assistance from WCRP Office ..
• Issue: Important
• Status: Lots of activities but …
• Plans: Step-by-step forward
• Inventory of
• drought-related activities
• scientists
• International assessment of drought capabilities:
• monitoring
• prediction
• Analysis of existing model studies
• As well as:
• Clarify definitions, trend studies, internal structure
• International drought workshop (2010-11)

1.
Background and Objective
 Motivate climate research targeting drought and need for coordination
2. Summary of User Drought Prediction Requirements
3. Document Current Drought Prediction Capabilities
4. Define Research and Development Needs
5. Recommendations on Research/Development Priorities
Workshop in late 2010-early 2011 will focus on this
Brief Newsletter Report (In CLIVAR Exchanges and GEWEX News):
Description of DIG
Invitation to join
Website: http://www.clivar.org/organization/extremes/activities.php
(to be transferred to WCRP domain)
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arising from SSG meeting New Delhi India, Jan 2010

• Global and Regional Energy and Water project (GREW)
• [GEWEX grew]
• Possible new name mooted
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Mission statement
• To develop improved observational, diagnostic and modeling capabilities to measure and predict global and regional energy and water variations, trends, and extremes such as heat waves, floods and droughts; and provide the science underpinning climate services.
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DATA
• Develop climate data records of atmospheric and land variables, complete with metadata and error bars.
• Provide descriptions and analyses of observed variations, trends and extremes in hydrological and energy-related quantities.
ANALYSIS
• Develop advanced diagnostic tools and identify pathways for model improvement.
• Increase understanding of energy and water cycle processes , quantify their contribution to climate feedbacks, and develop improved hydro-meteorological parameterizations.
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• Develop and exploit methods of dealing with non-stationarity of hydrological variables, and especially extremes of floods and droughts, associated with climate and global change.
• Contribute to building a comprehensive end-to-end pan-
WCRP initiative on climate extremes addressing the compound and nonlinear nature of extreme events, their ubiquity and risk coping issues.
MODELING
• Attribute causes of trends, and determine the predictability of energy and water cycles on a global and regional basis in collaboration with the wider WCRP community.
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• Accelerate developments in models of the land, atmosphere and entire climate system.
• Improve capabilities for predictions of water and energy cycle variability on all time scales.
APPLICATIONS
• Develop observational sites, data processing tools, data management and archival systems, model initialization and synthesis capabilities, and other research outcomes for transition to operations .
• Promote and foster capacity building through training of scientists and the user community.
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• Understanding and modeling:
• anthropogenic influences on land and water use, including urbanization
• effects of climate variability and change on land surface properties and processes
• anthropogenic aerosols
• Improved representation of hydrological processes in land surface schemes, including groundwater
• Assimilation of local and regional data to constrain global model parameterizations
• Extremes in water cycle effects on, for example, ecosystems, land forms, food systems, human health, ...
• Linkages with biogeochemical processes, including modeling of water quality and other non physical variables
• Geo-engineering
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• Each Imperative has with it a list of the lead group, partners and actions
• This needs to be developed (draft exists)
• Buy in needed by Panels and WGs
• Plan for how to get there from here at Pan-
GEWEX mtg
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August 2010, Seattle
• Organizing Committee: Dennis Lettenmaier, Tom Ackerman, (Hosts);
Peter van Oevelen+IGPO, Collen Marquist
General structure (straw man): 4 days
• Half day for WCRP and GEWEX presentations – focus on the future of
GEWEX activities and science
• Half day for “sponsor” presentations – NASA, ESA, JAXA, SCOPE-CM(?),
NWP, hydrologic user community
• One day for each panel to meet alone
– Discuss future panel science activities (including climate services)
– Discuss panel science – try to draw on expertise from other panels
• One day for panel interaction science sessions (RHP science interactions)
• One day for GEWEX science interactions with other WCRP programs
– Cross-cutting science issues
– “Hot” topics (polar climate, ocean fluxes/acidification, ??)
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August 2010, Seattle
SSG to meet along with meeting, evenings and Friday and ½ Saturday
(replaces next Jan mtg)
What do we want to get out of the meeting?
• Convergence on a plan for the future of GEWEX science
– Identification and definition of imperatives
• Better working connections among the panels and WCRP elements, and SSG
• Exposure for GEWEX successes and activities
• Sponsor needs and buy-on
• Groundwork for some GEWEX articles?
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• Approve New Chair :
– Nominated: Kevin Trenberth
• Approve New Vice Chair:
– Nominated: Howard Wheater
• Nominations of 3 SSG members:
– Nominated: Eleanor Blythe, Massimo Menenti and
George Tselioudis
• Support for the PAN-GEWEX Meeting
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