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Dynamical Core in Atmospheric Model Does Matterin the Simulation of Arctic Climate

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Title
Dynamical Core in Atmospheric Model Does Matterin the Simulation of Arctic Climate
Other Titles
대기모델 역학코어의 북극 기후모의에서의 중요성
Authors
Jun, Sang-Yoon
Choi, Suk-Jin
Kim, Baek-Min
Issue Date
2018
Citation
Jun, Sang-Yoon, Choi, Suk-Jin, Kim, Baek-Min. 2018. Dynamical Core in Atmospheric Model Does Matterin the Simulation of Arctic Climate. 2018 AGU fall meeting. Washington D.C. 2018.12.10~2018.12.14.
Abstract
Climate models using different dynamical cores can simulate significantly different winter Arctic climates even if equipped with virtually the same physics schemes. Current climate simulated by the global climate model using cubed-sphere grid with spectral element method (SE core) exhibited significantly warmer Arctic surface air temperature compared to that using latitudelongitude grid with finite volume method core. Compared to the finite volume method core, SE core simulated additional adiabatic warming in the Arctic lower atmosphere, and this was consistent with the eddy-forced secondary circulation. Downward longwave radiation further enhanced Arctic near-surface warming with a higher surface air temperature of about 1.9 K. Furthermore, in the atmospheric response to the reduced sea ice conditions with the same physical settings, only the SE core showed a robust cooling response over North America. We emphasize that special attention is needed in selecting the dynamical core of climatemodels in the simulation of the Arctic climate and associated teleconnection patterns.
URI
https://repository.kopri.re.kr/handle/201206/12332
Conference Name
2018 AGU fall meeting
Conference Place
Washington D.C
Conference Date
2018.12.10~2018.12.14
Type
Poster
Indexed
포스터
Appears in Collections  
2017-2018, Development and Application of the Korea Polar Prediction System (KPOPS) for Climate Change and Disasterous Weather Events (17-18) / Kim, Baek-Min (PE17130; PE18130)
2018-2018, Development and Application of the Korea Polar Prediction System (KPOPS) for Climate Change and Disasterous Weather Events (18-18) / Kim, Joo-Hong (PE18130)
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