2018-12-10 [その他] 第52回 データ同化セミナー(12/19)のご案内 - 中澤哲夫博士
12/19のデータ同化セミナーについてのご案内です。今回のセミナーでは、気象庁気象研究所の中澤哲夫氏よりご講演頂きます。
※どなたでもご参加いただけますが、入館に手続きが必要なため、事前に下記までご連絡をお願い致します。
da-seminar(please remove here)@riken.jp
以下URLに随時情報を更新しています。
https://www.data-assimilation.riken.jp/en/events/da_seminar/
以下、詳細です。
- Date： Wednesday 19 December 2018, 15:30-16:30
- Place： Seminar Room at R-CCS
- Language: Englih
- Speaker： Dr. Tetsuo Nakazawa (Meteorological Research Institute (MRI))
- Title: Is the Trend in Tropical Cyclone Formation Frequency due to Global Warming?
- Abstract: Under the warmer climate projection, several models simulate that the annual number of tropical cyclone formation will decrease, but the intense tropical cyclone number will increa se globally. The former may be related with the stabler condition of the atmosphere, and the latter may be related with the possible rapid intensification under the more humid condition near the surface. To understand the former hypothesis, Arakawa and Schubert'scumulus parameterization method has been utilized to estimate all possiblecloud types at each grid, using the ECMWF reanalysi s dataset (ERA20C) from1900 to 2010. The result shows that the tropical atmosphere is getting stabler and the cloud top height of the deepest cloud type is getting lower. This may explain why th e annual number the tropical cycloneformation will decrease in future.
