中国海洋大学学报（自然科学版）2024，Vol.54Issue(6)：11-22,12.DOI:10.16441/j.cnki.hdxb.20220499
大西洋和印度洋上空"射线状"云的观测分析与数值模拟研究
Observation Analysis and Numerical Modeling of"Actinoform Clouds"over the Atlantic and Indian Oceans
摘要
Abstract
In this paper a total of 118 Actinoform Clouds over the Atlantic and Indian Oceans from 2017 to 2021 were statistically analyzed by using satellite visible cloud imagery provided by MODIS sensors and VIIRS sensors.WRF(Weather Research and Forecasting)model was also employed to investigate an Actinoform Cloud case over the South Atlantic on 8 July,2019 by using horizontal resolution of 1 km modeling results.The vertical structures of cloud condensation nuclei,air temperature,vertical velocity,water vapor mixing ratio and horizontal distribution of water vapor mixing ratio of the Actinoform Clouds were analyzed based on WRF modeling results.Actinoform Cloud is a meso-scale weather phe-nomenon mainly occurring over low-latitude region and mostly occurring over the Southern Hemisphere Oceans.Summer and autumn are seasons of frequent occurrence of Actinoform Clouds over the Atlantic and Indian Oceans.WRF modeling results show that each cloud arm of Actinoform Clouds corresponds to varying degrees of upward motion,and Actinoform Cloud is a convective cloud in nature.Atmospheric inversion layer will limit the higher development of cloud top,and water vapor is confined below the inversion layer.The wider inversion layer is an important factor for shaping the structure of Actinoform Cloud.关键词
"射线状"云/带状云臂/大西洋和印度洋/统计分析/WRF数值模拟/逆温层Key words
Actinoform Clouds/ridical cloud arms/Atlantic and India Oceans/statistical analysis/WRF modeling/inversion layer分类
天文与地球科学引用本文复制引用
孙维康,傅刚,王忠石..大西洋和印度洋上空"射线状"云的观测分析与数值模拟研究[J].中国海洋大学学报（自然科学版）,2024,54(6):11-22,12.基金项目
国家重点研究发展计划项目(2022YFC3004200) （2022YFC3004200）
国家自然科学基金项目(42275001)资助 Supported by the National Key Research and Development Program of China(2022YFC3004200) （42275001）
the National Natural Science Foun-dation of China(42275001) （42275001）
