Air-Sea Interaction in Monsoon Asia through Cloud and Radiation Processes

2014 Fiscal Year Final Research Report

• Project Area: Multi-scale air-sea interaction under the East-Asian monsoon: A "hot spot" in the climate system
• Project/Area Number: 22106004
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Tohoku University
• Principal Investigator: HAYASAKA Tadahiro 東北大学, 理学(系)研究科(研究院), 教授 (40202262)
• Co-Investigator(Kenkyū-buntansha): KAWAMOTO Kazuaki 長崎大学, 大学院水産・環境科学総合研究科, 教授 (10353450) ; MURAYAMA Toshiyuki 東京海洋大学, 大学院海洋科学技術研究科, 教授 (50200308) ; EGUCHI Nawo 九州大学, 応用力学研究所, 助教 (50378907) ; IWASAKI Toshiki 東北大学, 大学院理学研究科, 教授 (80302074) ; TSUBOKI Kazuhisa 名古屋大学, 地球水循環研究センター, 教授 (90222140)
• Co-Investigator(Renkei-kenkyūsha): IWABUCHI Hironobu 東北大学, 大学院理学研究科, 准教授 (80358754) ; OKAMOTO Hajime 九州大学, 応用力学研究所, 教授 (10333783)
• Project Period (FY): 2010-04-01 – 2015-03-31
• Keywords: 雲 / 放射 / 大気海洋相互作用 / 衛星観測 / 数値シミュレーション

Outline of Final Research Achievements

A relationship between micro and macro physical properties of cloud and heat flux at the sea surface was studied by using satellite observation data, ship-borne observation data, surface observation data, and numerical simulation with a cloud-resolving model. The results show that condensation process is dominant in the growth of cloud droplet over the area where heat flux at the sea surface is large, while collision process is important for the droplet growth in the other area. It was shown from the space-borne lidar and cloud-radar that overlapping clouds suppress the underlying low level cloud development.

Free Research Field

大気物理学