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SUMMARY:6th WGNE workshop on systematic errors in weather and climate mode
 ls
DTSTART:20221031T090000Z
DTEND:20221104T170000Z
DTSTAMP:20260518T181300Z
UID:indico-event-241@events.ecmwf.int
CONTACT:events@ecmwf.int
DESCRIPTION:\n\nDescription\n\nThe WMO/WCRP Working Group on Numerical Exp
 erimentation (WGNE) organises a hybrid workshop on systematic errors in we
 ather and climate models\, hosted by the European Centre for Medium-Range 
 Weather Forecasts (ECMWF) on 31 October - 4 November 2022.\n\nThe workshop
  brought together a wide range of experts on simulating the Earth System 
 including atmosphere\, ocean\, waves\, land-surface\, atmospheric composit
 ion\, and associated disciplines to advance the understanding of systemati
 c simulation errors at all timescales. A particular emphasis was given to 
 identifying errors in complex coupled systems and to understand their root
  causes. Progress in diagnosing and addressing systematic errors using a w
 ide range of tools ranging from classical methods to advanced technologies
  such as data assimilation and machine learning / AI was documented. The 
 workshop encouraged an active discussion on relative merits of active deve
 lopment of physical models and parametrisations to address systematic erro
 rs versus bias correction methods.\n\nThe workshop reviewed recent progres
 s made on the atmospheric systematic error priorities identified from the 
 5th Workshop on Systematic Errors\, while also expanding focus to coupled 
 systems. The workshop was broadly organized around the following themes:\
 n\n\n	Clouds and precipitation: convective precipitation\; sfc-fluxes and 
 diurnal cycle\; cloud microphysics\; representation of low clouds\, especi
 ally at high latitudes\; uncertainty representation\; resolved/unresolved 
 convection\; precipitation over orography\; convective organisation.\n	Atm
 osphere-land-ocean-cryosphere interactions: sfc fluxes and diurnal cycle\;
  surface drag\; soil/vegetation/land-use representation\; stable boundary 
 layer issues\; fog-stratus simulation\; impact of coupled modeling to ocea
 n/sea-ice/waves.\n	(sub-)tropical circulations: Tropical cyclones\, MJO\, 
 QBO\,  double ITCZ and ENSO biases\, ocean and wave coupling\, role and b
 iases over the maritime continent\, tropics and mid-latitude coupling.\n	S
 tratosphere-Troposphere interactions: role of stratospheric biases on long
 er term predictability\; stratospheric bias correction and impact on predi
 ctability\; atmospheric composition and long-lived tracers.\n	Machine lear
 ning/AI and data assimilation: novel techniques to diagnose\, measure or r
 esolve systematic errors.\n	Quantifying uncertainty: spread-error relation
 ships\; identifying role and contribution of physical processes to uncerta
 inty characterization \; ensemble and hindcast strategies to identify extr
 emes \; use of multi-model ensembles to identify systematic errors\; stoch
 astic representations of model uncertainty.\n	Challenges and surprises in 
 simulating the climate system: improvements and new errors with eddy resol
 ving / deep convection resolving simulations\, errors due to vertical/hori
 zontal resolution imbalances\, shifts in statistical analyses due to resol
 ved vs parametrised processes\, systematic errors due to changes in convec
 tive organisation\n\n\nFormat\n\nThe format of the workshop facilitated on
 line and physical participation and followed the previous successful work
 shop in Montreal in 2017\n\nThere was a single session of oral presentati
 ons (no parallel sessions) from selected abstracts plus keynote talks of s
 olicited speakers.\n\nThe majority of presentations were in the form of p
 osters which were discussed in dedicated physical sessions and a dedicate
 d online session.\n\nhttps://events.ecmwf.int/event/241/
IMAGE;VALUE=URI:https://events.ecmwf.int/event/241/logo-2890518522.png
LOCATION:ECMWF
URL:https://events.ecmwf.int/event/241/
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