Quantification of global cloud-resolving radiative energy budget using multi-scale atmospheric radiation model

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H03729
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Japan, Meteorological Research Institute
• Principal Investigator: Ota Yoshifumi 気象庁気象研究所, 気象衛星・観測システム研究部, 研究官 (70442697)
• Co-Investigator(Kenkyū-buntansha): 石田 春磨 気象庁気象研究所, 気候研究部, 研究官 (90374909) ; 岩渕 弘信 東北大学, 理学研究科, 准教授 (80358754) ; 櫻井 篤 新潟大学, 自然科学系, 准教授 (20529614) ; 関口 美保 東京海洋大学, 学術研究院, 准教授 (00377079)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 気象学 / 大気放射 / 放射エネルギー収支 / モデル化

Outline of Final Research Achievements

Three-dimensional atmospheric radiation models were developed on the basis of Monte Carlo method and explicit solution method. The three-dimensional radiation models were applied to the latest cloud-resolving meteorological simulation data. As a result, in the case of open cell cloud and closed cell cloud, differences in solar radiative heating rate at 1-6 K/hr were shown as a function of spatial grid sizes between 100m and 1km. On the other hand, domain-average of the solar radiative heating rate did not depend on spatial resolution, and there were no significant thermo-dynamical differences in domain-average values. Therefore, it is shown that cloud-radiation interaction at cloud-resolving scale might have different property depending on the spatial resolution.

Free Research Field

大気放射