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DTSTAMP:20210916T132450Z
LOCATION:Jean Calvin
DTSTART;TZID=Europe/Stockholm:20210706T143000
DTEND;TZID=Europe/Stockholm:20210706T150000
UID:submissions.pasc-conference.org_PASC21_sess120_msa229@linklings.com
SUMMARY:Introduction to the Ocean-Coupled Components of DYAMOND2, the Inte
 r-Comparison Project for Global “Storm-Resolving” Numerical Models
DESCRIPTION:Minisymposium\n\nIntroduction to the Ocean-Coupled Components 
 of DYAMOND2, the Inter-Comparison Project for Global “Storm-Resolving” Num
 erical Models\n\nMiyakawa, Suematsu, Masunaga, Kawasaki, Shibuya...\n\nA g
 lobal “storm-resolving” experiment coupled with a full-3D dyna
 mical ocean model is a challenging component in the second phase of DYAMON
 D. Two groups (NICAM and IFS) are prepared to participate, and a few more 
 (ICON, SAM, and GEOS) may join. <br />Pilot NICAM-COCO (NICOCO) experiment
 s using storm-resolving atmosphere and 1 degree ocean has shown that, a) M
 adden-Julian oscillation prediction skill of the model is maintained for a
 bout 4 weeks, comparable with the atmospheric model, and b) a “cold 
 tongue” SST bias develops during the first 3 months. The coupled ver
 sion shows its advantage over the atmosphere-only model in situations whic
 h SST anomaly changes drastically (e.g., abrupt termination of the 1998 El
  Nino). Downgrade of skill due to the bias appears to counter it, resultin
 g in the MJO skill comparable with the atmospheric version. The SST bias i
 s preventing us from fully utilizing the merits of NICOCO, which could pro
 vide a breakthrough in MJO-and-ocean related predictions such as TC genesi
 s, and improve El Niño representation in the climate system. Thus, 
 the main goal for the ocean-coupled experiment is to understand the behavi
 ors of the SST bias. The representation of tropical/subtropical clouds and
  ocean mesoscale eddies are key factors to be looked into.\n\nDomain: Clim
 ate and Weather
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