Study on the effect of short-term variations in the upper ocean on the atmosphere

上层海洋短期变化对大气影响的研究

• 批准号: 19612005
• 负责人: KAWAI Yoshimi
• 金额: $ 2.83万
• 依托单位: Japan Agency for Marine-Earth Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19612005/
• 关键词: 大気海洋相互作用; リモートセンシング; 海洋物理・陸水学; 自然現象観測・予測; 大気海洋結合モデル; 日変動; 海面水温; 植物プランクトン; 日変化; 気象学

We investigated short-term variations of the upper ocean and their impacts on the atmosphere in the northwestern Pacific Ocean around Japan. It was revealed from an analysis of satellite data that the surface chlorophyll-a quick increase events with quick sea surface temperature (SST) drop tended to occur south of Okinawa and Honshu, and in the Kuroshio-Oyashio Extention region, where cyclones often pass. We also performed numerical experiments by using an ocean-atmosphere coupled regional model, and shown that the diurnal variation of SST can modify precipitation in the Baiu season and the intensity of a typhoon.

我们调查了日本周围西北太平洋上层海洋的短期变化及其对大气的影响。通过对卫星资料的分析发现，伴随着海表温度（SST）快速下降的表层叶绿素a快速增加事件倾向于发生在冲绳和本州以南，以及气旋经常经过的黑潮-俄亥俄延伸区。利用一个区域海气耦合模式进行了数值试验，结果表明，海温的日变化对台风强度和降水有一定的影响。