Introduction of the NIMS/KMA K-ACE model and its climate sensitivity — Australian Meteorological and Oceanographic Society
  1. Schedule
  2. Afternoon Tea + Poster Session 2
  3. Introduction of the NIMS/KMA K-ACE model and its climate sensitivity

Introduction of the NIMS/KMA K-ACE model and its climate sensitivity (#2019)

Min-Ah Sun 1 , Hyun Min Sung 1 , Jisun Kim 1 , Byeong-Hyeon Kim 1 , Yoon-jin Lim 1 , Young-Hwa Byun 1 , Johan Lee 1
  1. National Institute of Meteorological Sciences/KMA, Seogwipo-si, JEJU-DO, South Korea

As a registered model of CMIP6, K-ACE is to be used to perform the DECK, historical experiment (entry card), and some endorsed MIPs following the CMIP6 experiment design protocol (Eyring et al. 2016). In this presentation, the general features will be presented such as model configurations, preliminary evaluations, and climate sensitivity. K-ACE model appears to capture the mean climatology, horizontal distributions and inter-annual variability of the observed climate (Lee et al. 2019). The ECS is 4.83 K and TCR is 2.07 K. The response to the CO2 forcing in the K-ACE is higher than the CMIP5 range. Also, K-ACE shows strong positive shortwave cloud radiative effect (CRE) feedback and strong negative longwave CRE feedback compare to CMIP5 models. The reduction of the high thin cloud largely affects strong negative longwave CRE feedback and decrement of low thick cloud affects positive shortwave CRE feedback. Considering this, CRE feedback may be one of leading component for high values of ECS and TCR. The detailed analysis will be shown in this presentation.

#amos2020