Korea Institute of Ocean Science and Technology Earth System Model and Its Simulation Characteristics SCIE SCOPUS KCI

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Title
Korea Institute of Ocean Science and Technology Earth System Model and Its Simulation Characteristics
Author(s)
Pak, Gyundo; Yign Noh; Lee, Myong-In; Yeh, Sang-Wook; Kim, Daehyun; Kim, Sang-Yeob; Lee, Joon-Lee; Lee, Ho Jin; Hyun, Seung-Hwon; Lee, Kwang-Yeon; Lee, Jae Hak; Park, Young Gyu; Jin, Hyunkeun; Park, Hyuk Min; Kim, Young Ho
KIOST Author(s)
Pak, Gyundo(박균도)Lee, Jae Hak(이재학)Park, Young Gyu(박영규)Jin, Hyunkeun(진현근)Park, Hyuk Min(박혁민)
Alternative Author(s)
박균도; 이재학; 박영규; 진현근; 박혁민
Publication Year
2021-03
Abstract
We document the performance of a new earth system model developed at Korea Institute of Ocean Science and Technology, called the KIOST-ESM, based on a low-resolution (similar to 200 km for the atmosphere, similar to 100 km for the ocean) version of the Geophysical Fluid Dynamics Laboratory Climate Model 2.5. The main changes made to the base model include adopting a unified convection scheme for cumulus convection and an ocean mixed layer parameterization considering Langmuir circulation, which improve the model fidelity significantly. In addition, the KIOST-ESM adopts a new soil respiration scheme in the dynamic vegetation process of its land component. The performance of the KIOST-ESM was assessed in pre-industrial and historical simulations that are made as part of its participation in the Coupled Model Intercomparison Project phase 6 (CMIP6). The response of the earth system to increasing greenhouse gas concentrations was analyzed in the ScenarioMIP simulations. An abrupt quadrupling of CO2 experiment suggests that the equilibrium climate sensitivity of KIOST-ESM is 3.36 K-very close to the averaged one obtained from CMIP5 simulations. Although the KIOST-ESM showed a notable cold bias in the Northern Hemisphere and the double Inter-Tropical Convergence Zone bias, the KIOST-ESM outperforms the base model in simulating the mean sea surface temperature over the Southern Ocean and over the cold tongue in the tropical Pacific. The KIOST-ESM can also simulate the dominant tropical variability in intraseasonal (Madden-Julian Oscillation) and interannual (El Nino-Southern Oscillation) timescales more realistically.
ISSN
1738-5261
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/41332
DOI
10.1007/s12601-021-00001-7
Bibliographic Citation
OCEAN SCIENCE JOURNAL, v.56, no.1, pp.18 - 45, 2021
Publisher
KOREA INST OCEAN SCIENCE & TECHNOLOGY-KIOST
Keywords
CMIP6; El Nino-Southern Oscillation; KIOST-ESM; Madden-Julian Oscillation; Physical parameterization; Southern Ocean warm bias
Type
Article
Language
English
Document Type
Article; Early Access
Publisher
KOREA INST OCEAN SCIENCE & TECHNOLOGY-KIOST
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