The GEWEX Global Energy Water cycle Exchanges Science Steering Group 34th edition is held in Paris at University Sorbonne.
https://www.gewexevents.org/meetings/gewex-ssg-34a/
This meeting is focused around the Science Plan 2023-2032, and on the review of progress in the 4 main international panels, GLASS, GASS, GHP, GDAP.
Day 1 Strategic Planning
Time | Item | Presenter | Comments |
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08:15 – 08:30 | Welcome | Jan Polcher, Xubin Zeng and Peter van Oevelen | Jan Polcher Xubin Zeng and Peter van Oevelen gave the welcome to this first in-person / hybrid meeting after the pandemic. Daniel Klocke, Mike Bosilovich, Maria Piles, Tristal Lecuyer, Francina Dominguez, Ali Nazemi, Benjamin Lamprey joined remotely. |
08:30 – 10:00 | GLASS | Kirsten Findell and Anne Verhoef | GLASS is made of about 10 projects (LUMIP and DICE/GABLS are retired), that are clustered in 3 topical areas: Processes: LoCo (Joe Santanello NASA lead) include several field campaigns (GRAINEX, LAFE, LIASE 2021, FESSTVal 2021) good uptake of coupling diagnostics GLAFO (Volker Wulfmeyer, Stuttgart lead of GLA Feedback Observatories) include turbulence & PBL observations (lidar), there are few major EU site (Hohenheim, Lindenberg, Cabauw, Payerne, Chilbolton in Europe). SoilWat (Yijian Zeng Twente & Anne Verhoef UoR, Laure Condon U.Arizona) with focus on pedotransfer and links to soil properties and root distribution. SP-MIP has interesting results. A 3m soil is clearly not enough. GlobTemp ESA can be used. Benchmarking: PLUMBER2 & PALS (modelevaluation.org) and ILAMB (now under PALS for global runs, interesting for CP to participate (ECMWF/GLASS linkSouhail Boussetta). A new paper documenting the site just published Ukkola et al. 2022. Intercomparison: GSWP3 and LSMIP3 are ongoing. There are 4 new initiatives. Irrigation effort (LIAISE and GRAINEX) got a boost in 2021 thanks to the Irrigation workshop. CLASP (Coupling Land Atmosphere Subgrid Parameterisations) focus on PBL & land heterogeneity, using LES. Origin US. SIFMIP (Solar Induced Fluorescence MIP) aiming at Carbon/Water interactions. SIF nicely linked to transpiration. Parazoo et al. 2020 set the scene for Phase-I. Phase-II expanding on diurnal, synoptic, seasonal evaluation which can be interesting for ECMWF (linkAnna Agusti-Panareda). Nick Parazoo (JPL) is coordinating the SIF benchmarking. CC-dET (cross-cut with GHP) measuring & modelling ET, including interception and open water, and irrigation, Patricia Lawston-Parker (ECMWF link Margarita Choulga ) A BAMS 30-year history paper is being prepared (ECMWF link Gianpaolo Balsamo ). |
10:30 – 12:00 | GASS | Sandrine Bony and Daniel Klocke | GASS focus on understanding physical processes in the atmosphere. Good communication with WGNE. GASS will also embrace Digital Earth and VHRES process modelling. COORDE on orographic drag has a publication by van Niekerk et al. 2020. Links also with WGNE. LS4P on land temperature predictability has a publication by Xue et al 2021 (ECMWF links Gianpaolo Balsamo ) Diurnal/Sub-diurnal precipitation project is ongoing GAP (GEWEX Aerosol Precipitation) plan to review in Monterey UTCC-PROES (Tropospheric Clouds/Convection) Legacy of WCRP grand challenges are fitting well with GASS. Convective organization/aggregation is blooming (4 review paper in recent years). New observation (EURECA, COMBLEX, MOSAIC, FESSTVal campaigns), new models (storm resolving) and potential synergies (CFMIP, WGNE, GDAP). DYAMOND results are shown as multi-model example. The km-scale storm resolving models are a natural aggregator of GEWEX panels work. GEWEX acknowledge that the landscape is changing because of Destination Earth and the new tools connected. New proposed projects include: Mesoscale organisation of convection/trade-wind & cloud feedback; Organisation of deep convection; Air-sea coupling; Arctic cold-air outbreaks; Stable PBL(follow-up of GABLS); Convective momentum transport; Diurnal cycle of precipitation. Orographic precipitation (INARCH link in GHP). The 3rd Pan-GASS workshop in Monterey & CPCM (Convection-Permitting Climate Modelling) in Buenos Aires, are highlighted upcoming meetings. |
13:30 – 15:00 | GDAP | Rémy Roca and Tristan L’Ecuyer | GDAP (GEWEX Data Analysis Panel) 3 Surface network: BSRN (Christian Lanconelli JRC, manage 76 stations, 16 closed, 9 installed, GCOS recognised reference network), 12200+ monthly files, RAMI project RAMI-V with Nadine Gobron). GPCC (data is gridded but pre-process data can be obtained (without ID)). ISMN (Vienna to Germany GRDC, Wouter Dorigo former coordinator). 3 Assessment Reports: Water vapor (Phase-II started, publication in ACP/AMT/ESSD/HESS special issue) L Picon leading. On Arctic for Water vapour ACLOUD ACP special issue). Precipitation (Joint IPWC/GEWEX precipitation assessment report is published, ERA5 compares more favourably to CERES diabatic heating compared to ERAI, see page 47, Figure 2.1.3 of the assessment report). See also Remy Roca FROGS dataset for precipitation, and Hirohiko Masunaga et al. 2019. Earth imbalances EI GDAP assessment revealed 93% of heat imbalance is over ocean due to OHC Ocean Heat Content. 2 Projects: Integrated Product Project delivered 1999-2014 dataset combining several observationally based datasets. Robin Guillame-Castel & Benoit Meyssignac. The IPP dataset satisfies Energy & Water closure. ISSCP NextGen (led by Andy Heidinger NOAA and B Khan JPL, Martin Stengel DWD CM-SAF) is reviving, with the aim to have an inter calibrated dataset to be used for cloud cover. Proposed new project on Regional Energy&Water consistency over land (link with GLAFO). 2022 GDAP meeting 26-30 September, Bern, Switzerland. Link with Earth System Modelling & Observations (ESMO which absorbs WGCM/WGSIP/WGNE) and the Global Precipitation Experiment (GPEX) of WCRP are ongoing. |
15:30 – 17:00 | GHP | Francina Dominguez and Ali Nazemi | GHPs (Global Hydroclimatology Panel) work is articulated in 4 areas: RHPs (Regional Hydroclim Projects) ongoing. BalticEarth (Baltic regional focus) has a Special issue in ESD and Global Water Future (Canada focus). AndEx, AsiaPEX, TPE-WS. CCs (Cross-Cut) TEAMx (focus on the Alps, PBL centric), INARCH-II (just approved follow-on to INARCH, focus on high mountain hydrology, worldwide, John Pomeroy lead) (ECMWF link Gabriele Arduini ). Newly proposed CC-Flood, CC-Determine_ET. GDCs (Global Data Centres): GPCC (precipitation), GRDC (runoff), HYDROLARE (lake levels, although Hydroweb might be more uptodate. SWOT satellite foreseen for Nov 2022 will increase relevance of river/lakes level measurements from space). GHP network: essentially PannEx. A PannEx special issue published in MDPI Atmosphere. |
Day 2 WCRP Light House activities, New CPs and Meeting Planning
Time | Item | Presenter | Comments |
---|---|---|---|
08:30 – 09:00 | Safe Landing Climates | Gabi Hegerl and Hyungyun Kim | The safe landing climate is focusing on multidecadal to millennial timescales, organised in 5 themes & Working Groups: Safe landing pathways (CC scenarios); Understanding HRES events (regimes shift, compound events); Perturbed Carbon cycle (CO2); Water resources (eg. deforestation); Sea Level Rise . A GEWEX Newsletter article describes the focus. |
09:00 – 09:30 | Digital Earth | Christian Jakob and Andreas Prein | Digital Earth lighthouse focus on Global & Regional information on past, present, future. DE will link existing large scale programmes (& investments). Three main themes & WGs in DE:
Comment: DE could/should push to endorse, re-groupe & link all storm resolving projects (in EU Nextgems (& Dyamond), Destine Programme, in US, AU). Comment: A way to overcome initial aversion to DE could be to show added value of new generation of DE models will do (precipitation & hydrological extremes, clouds, wind) to show how they fit the needs. Comment: Links to ESMO are going to be important to benefit from overlaps. |
09:30 – 10:00 | Explaining and Predicting | Kirsten Findell | Explaining & Predicting lighthouse is focusing on the science that enable the design and deployment of integrated capability for quantitative evaluation (observations, early warning, prediction of Earth System changes) at multi-annual to decadal timescales. Three themes & WGs:
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11:30 – 12:00 | Regional Information for Society (RiFFS) | Peter van Oevelen | RIFS lighthouse is organised in 4 clusters (understanding regional, ...). RIFS will link with the RHP & GLASS panels, and link to Lighthouses. RIFS interfaces with CORDEX, and help focus climate change scenarios of farm-scales. RIFS is completing the chain from GHP/RHP down to users, with elements of social science, socio-economic, communication, impact. |
10:30 – 11:00 | My Climate Risk | Ali Nazemi and Paola Arias | MCR (My Climate Risk) lighthouse is getting into a more mature state. Science plan consolidated. A bottom-up approach to local assessment of climate risk is embraced with people focus (see Rodriguez & Sheperd 2022). Risk impact is at the interception of hazards, vulnerability and exposure. MCR will adopt the narrative of case studies. Questions: How the MCR link to existing assessment? (The US National Climate Assessment, mandated by congress, the European State of Climate) and with climate services? |
12:00 – 12:30 | Earth System Modelling and Observations (ESMO) | Remy Roca and Tristan L’Ecuyer | ESMO (Earth System Modelling and Observations, Lead: Susann Tegtmeier & Cath Senior) is a Core Project of WCRP (alike GEWEX) that aims at addressing the overall coordination mechanism across models, data, observations, assimilation. ESMO will encompass and provide an umbrella to several existing panels (WGNE, WGCM, WGSIP, Obs4MIP, S2S, TIRA, and a new ObsPanel?). ESMO is the natural home to data assimilation & climate reanalysis discussions but it will also include a strong component on the Carbon Cycle current/predicted changes (linking with IG3IS/GAW, IGBP & WGCM carbon communities). ESMO will interact with external partners in WWRP, GAW, GCOS, GOOS, CEOS/CGMS & Space Agencies, Future Earth Projects (AIMES, SOLAS). GEWEX has a clear role in observation stewardship (showcasing usefulness and applications). |
11:00 – 11:30 | SSG-34B Planing | Xubin Zeng and Jan Polcher | |
12:30 – 14:00 | Lunch | ||
14:00 – 14:30 | WCRP Secretariat Update | Hindumathi Palanisamy and Mike Sparrow | |
14:30 – 15:00 | Pan-GASS update | Daniel Klocke | |
15:00 – 15:30 | WCRP Academy | Mike Bosilovich, Qingyun Dian | |
15:30 – 16:00 | Break | ||
16:00 – 17:00 | PAN-GEWEX Planning I | Xubin Zeng and Jan Polcher | |
17:00 – 17:30 | Wrap-up | Peter van Oevelen |
Day 3 Strategic Panning continued
Time | Item | Presenter | Comments |
---|---|---|---|
08:30 – 09:30 | Pan-GEWEX Planning II | Jan Polcher, Xubin Zeng and Peter van Oevelen | |
09:30 – 10:00 | 30-years GEWEX History Intro to Strategic Discussion | Graeme Stephens | |
10:00 – 10:30 | Break | ||
10:30 – 11:00 | WCRP Hydrology | Jan Polcher | |
11:00 – 11:30 | Global Precipitation Experiment (GPEX) | Xubin Zeng | |
11:30 – 12:00 | Cycles | Jan Polcher | |
12:00 – 13:30 | Lunch | ||
13:e0 – 15:00 | GEWEX Strategic Direction and Activities | Jan Polcher and Xubin Zeng | |
15:00 – 15:30 | Break | ||
15:30 – 16:00 | Any Other Topics | Jan Polcher, Xubin Zeng and Peter van Oevelen | |
16:00 – 17:30 | Summary Action Items and Recommendations | Peter van Oevelen | |
17:00 – 17:30 | Wrap-up | Peter van Oevelen |