中国海洋大学学报（自然科学版）2025，Vol.55Issue(12)：1-12,12.DOI:10.16441/j.cnki.hdxb.20250140
基于WRF-ROMS-CICE耦合模式的格陵兰岛极端降水与雨雪比例研究
Study on Extreme Precipitation and Rain-Snow Ratio in Greenland Using the WRF-ROMS-CICE Coupled Model
摘要
Abstract
Greenland,as a sensitive region to Arctic climate change,exhibits extreme precipitation and rain-snow partitioning shifts that critically influence ice sheet mass balance.Our study achieved efficient coupled atmosphere-ocean-sea ice simulations(WRF-ROMS-CICE,WRC)through the coupler(CPL),optimizing parallel computing algorithms,upgrading core model versions,and improving the physical treatment scheme of sea ice boundary conditions.On this basis,we quantified the spatiotemporal evolu-tion characteristics of extreme precipitation and precipitation phase transition trends over Greenland during the historical period(2005-2014)and under the future high-emission scenario(SSP5-8.5,2091-2100).Evaluation shows WRC reliably reproduces Greenland's temperature,precipitation,wind,and radiation patterns,outperforming CMIP6 models in capturing extreme precipitation intensity,especially coastal extremes.Projections reveal a 25%,26%,26%increase in extreme precipitation frequency,du-ration,and intensity,with peak absolute(+5.1 mm/d)and relative(33%)gains in the southeast and north,respectively.Summer(June-September)sees the strongest intensification(e.g.,+87.6 mm/month in September,southeast).Precipitation phase shifts markedly:snow fraction declines 10%～20%island-wide(coastal zones:up to 30%),while summer liquid precipitation rises 10%～30%.Under high emissions,reduced snowfall lowers albedo(Δα=-0.033 to-0.036),enhancing warming and accelerating ice loss.Despite increased summer precipitation(+20 mm/month),more rainfall ac-celerates ice sheet retreat,significantly impacting polar systems.These findings elucidate Greenland's climate-ice feedbacks under anthropogenic forcing.关键词
大气-海洋-海冰的高效协同模拟(WRF-ROMS-CICE)模式/极端降水/雨雪比例/气候变化/高分辨率模拟Key words
WRF-ROMS-CICE coupled model/extreme precipitation/rain-snow ratio/climate change/high-resolution modeling分类
大气科学引用本文复制引用
高阳,才天昊,程文轩,刘喜迎,张绍晴..基于WRF-ROMS-CICE耦合模式的格陵兰岛极端降水与雨雪比例研究[J].中国海洋大学学报（自然科学版）,2025,55(12):1-12,12.基金项目
国家重点研究发展计划项目(2022YFE0106400) （2022YFE0106400）
中央高校基本科研业务费专项(202341001)资助 Supported by the National Key Research and Development Program of China(2022YFE0106400) （202341001）
the Fundamental Research Funds for the Central Universities(202341001) （202341001）
