南京大学学报（自然科学版）2026，Vol.62Issue(3)：347-356,10.DOI:10.13232/j.cnki.jnju.2026.03.002
海岛降水的数值模拟研究
Numerical simulation of precipitation over tropic island
摘要
Abstract
Quasi-two-dimensional convection-permitting simulations under an idealized radiative-convective equilibrium framework are used to examine how latitude,topography,and island size shape the spatiotemporal characteristics of tropical island precipitation.Daily mean precipitation decreases with increasing latitude,and a pronounced diurnal cycle appears,with rainfall peaking from afternoon to evening.The peak occurs earlier at higher latitudes(～14:00 LT)and shifts to the evening at lower latitudes(～21:00 LT),partly due to latitude-dependent variations in sea-land breeze circulations.Increasing topographic height enhances precipitation by strengthening vertical upwelling over the island's interior.Enlarging island size does not alter the overall circulation structure,but leads to more spatially dispersed rainfall,reducing the island-mean daily precipitation despite an increase in total convective precipitation.关键词
海岛降水/数值模拟/纬度/地形作用/岛屿大小Key words
island precipitation/numerical simulation/latitude/topography/island size分类
天文与地球科学引用本文复制引用
余潜,汪曙光..海岛降水的数值模拟研究[J].南京大学学报（自然科学版）,2026,62(3):347-356,10.基金项目
国家重点研发计划(2023YFC3008003) （2023YFC3008003）
