Evalation of global cloud-resolving radiation budget using three dimensional atmospheric radiation model

2014 Fiscal Year Final Research Report

• Project/Area Number: 24340116
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: OTA Yoshifumi 独立行政法人海洋研究開発機構, シームレス環境予測研究分野, 研究員 (70442697)
• Co-Investigator(Kenkyū-buntansha): ISHIDA Haruma 山口大学, 理工学研究科, 助教 (90374909) ; IWABUCHI Hironobu 東北大学, 理学研究科, 准教授 (80358754) ; SAKURAI Atsushi 新潟大学, 自然科学系, 准教授 (20529614) ; SEKIGUCHI Miho 東京海洋大学, 海洋科学技術研究科, 准教授 (00377079)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 気象学 / 大気放射 / エネルギー収支 / モデル化

Outline of Final Research Achievements

Three-dimensional atmospheric radiation model has been developed on the basis of the Monte Carlo method and the explicit solution method. The broad-band optical models such as cloud scattering and gaseous absorption have been also developed in order to apply the radiation model to the latest cloud-resolving meteorological simulation data. As a result, in the case of open cell clouds, the spatially-localized differences at a few hundred W/m2 in the solar radiation flux have been shown as a function of spatial grid size. On the other hand, the differences in heating rate of the solar radiation have not depended largely on the spatial grid size and have been locally several kelvins per day. The results indicate that the three-dimensional effect of solar radiation in the local air mass does not affect largely on the cloud evolution.

Free Research Field

大気放射