1. Global Energy and Water Cycle EXperiment
Peter van Oevelen
Kevin Trenberth
GEWEX-SSG and Panel Chairs

2. The Tools Theory Modelling Observations GEWEX Radiation Panel
Domains
The Tools
Regional
Integrated / coupled
Global
Theory
Modelling
Observations
Observational Data Sets
Models and Parameterizations
Application Products
GEWEX Radiation Panel
GEWEX Modelling and Prediction Panel
Coordinated Energy and Water Cycle Observations Project
Basic structure of GEWEX from a classical point of view, transgressed into the current set –up and linked to results/activities
Global Data sets (precip, radiation, cloud cover etc.), Land surface parameterization, cloud parameterization etc., Forecasts e.g. droughts, floods,
GEWEX achieves its goals through data set development and
analysis, process studies and model improvement
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3. Radiative processes and understanding
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
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)
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

4. General Update
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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5. 2009 Meetings 21st GEWEX SSG, UC Irvine, January
3rd 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.
6th 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 2nd 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, 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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6. GEWEX Radiation Panel 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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7. 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
Cloud amount
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8. 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
SDS = Scientific Data Stewardship program/office of NCDC
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9. Coordinated Energy and water cycle Observations Project .
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 3rd International Conference in Burkina Faso, July 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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10. CEOP 3 -5 Year Vision
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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11. CEOP 3 – 5 Year Vision 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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12. GMPP highlights
benchmarking
land-atmosphere
coupling
model data
fusion
metrics
GLACE2
LandFlux
LoCo
current projects
new projects
PILPS-Urban
SnowMIP
LUCID
Coordinated
LDAIP
RAMI4PILPS
PILPS-Carbon 2
A new GLASS for better support of community activities

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

14. GMPP future
GMPP remains the expert panel on atmospheric and land surface process studies
Integrate process-level experience in WCRP-wide 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!

15. Panel Interactions 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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16. JSC Cross Cut - Monsoons in a changing climate
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)
Membership (to be finalized)
JSC representatives (Goswami, Wu, Semazzi)
2 for Asian monsoon (CLIVAR AAMP, GEWEX MAHASRI)
1 for Australian monsoon
2 for African monsoon (AMMA plus VACS Regional modeller)
2-3 covering N & S American monsoons
Secretariat (GEWEX/CLIVAR)
Meeting of opportunity (Goswami/Wu at AMY meeting, Kunming)
Proposed ToRs
Review current WCRP activities on monsoons in a changing climate.
2. Identify gaps and key questions to be addressed
3. Develop plans for coordinated WCRP activity [based around CMIP5]
4. Consider how best to entrain a community wide effort on this
5. Consider how to address societal impacts - meningitus focus
Set up a GEWEX/CLIVAR WG:
B.N. Goswami (JSC)
Bin Wang (CLIVAR)
Jun Matsumoto (GEWEX)
In- Sik Kang
Akio Kitoh
Fred Semazzi
Carolina Vera
More to be added.
Ocean observations will be at the heart of decadal climate prediction systems. Major challenges will, therefore, be to continually assess whether existing and planned ocean observing systems are optimal for decadal predictions and to address any identified deficiencies. As one example, a tremendous advance has been the measurements of temperature and salinity over the upper 2000 m of the global ocean currently provided by ARGO profiling floats. There exists, however, a need to assess whether observations from below 2000 m would be of use in decadal climate predictions by more completely characterizing deep ocean conditions, such as the lower limb of the MOC, and in assessing other changes such as in abyssal ocean heat content. Also, with a lifetime of individual ARGO floats of only a few years, there is a need to evaluate and minimize the impact of instrumentation changes on the quality of the records both for climate analyses and for initializing prediction models.
Terms of Reference established:
White paper
Organize Workshop
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17. 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).

18. 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 ( )
Meetings
2008: August     GEWEX-CLIVAR Joint Executive Meeting
December  AGU
2009: January ...    calls
December    AGU

19. Drought – White Paper Background and Objective
Motivate climate research targeting drought and need for coordination
Summary of User Drought Prediction Requirements
Document Current Drought Prediction Capabilities
Define Research and Development Needs
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:
(to be transferred to WCRP domain)
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20. Recent GEWEX Developments arising from SSG meeting New Delhi India, Jan 2010

21. GEWEX : post 2013 Global and Regional Energy and Water project (GREW)
[GEWEX grew]
Possible new name
mooted
Climate, Energy and Water: CLEW
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22. GEWEX: post 2013 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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23. Imperatives
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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24. Imperatives
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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25. Imperatives
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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26. Frontiers 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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27. Imperatives implementation
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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28. Pan GEWEX meeting 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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29. Pan GEWEX meeting 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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30. Recommendations to the JSC
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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