高原气象2026，Vol.45Issue(4)：1181-1193,13.DOI:10.7522/j.issn.1000-0534.2025.00118
积层混合云碘化银催化人工增雨数值模拟敏感性试验
Sensitivity experiments of numerical simulation on rain enhancement by AgI seeding for convection-embedded stratification clouds
摘要
Abstract
Numerical models play an important role in clarifying seeding agent diffusion,rain enhancement mechanisms and effectiveness evaluation.By using a mesoscale model with AgI seeding process,sensitivity ex-periments of numerical simulation on rain enhancement by silver iodide(AgI)seeding for convective-embedded stratiform clouds on May 3,2023 in Shangqiu,Henan Province are conducted.The AgI seeding agent diffusion,interactions with cloud microphysics and rain enhancement mechanisms,as well as sensitivity experiments with various seeding location and seeding amount are investigated.The results indicate that the supercooled water con-tent distributes dispersedly in stratiform clouds with embedded convection,with higher content in the embedded convection region.When seeding AgI in a location with higher AgI nucleation rate in temperature and higher su-percooled water content,there is an apparent reduction in supercooled water content and increase in cloud ice,resulting in increases in snow and graupel in clouds and the rainfall on the ground.Sensitivity experiments show that the temperature of seeding location,supercooled water content and seeding amount are all critical to the sur-face rain enhancement.The optimum seeding method for rain enhancement should be conducted in a location where the temperature meets the threshold for AgI nucleation with higher supercooled water content and appropri-ate agent amount is seeded.For convection-embedded stratification clouds,if seeding in embedded convection where the temperature cannot meet the AgI nucleation threshold,the seeding agent can be efficiently transported by updraft to the upper-level low-temperature region where nucleation can take place,enhancing the precipita-tion at the surface.关键词
河南/积层混合云/碘化银催化/人工增雨/数值敏感性试验Key words
Henan Province/convection-embedded stratification clouds/silver iodide seeding/rain enhance-ment/numerical sensitivity experiments分类
天文与地球科学引用本文复制引用
许文卿,付丹红,郭学良,苏德斌..积层混合云碘化银催化人工增雨数值模拟敏感性试验[J].高原气象,2026,45(4):1181-1193,13.基金项目
中部区域积层混合云人工增雨(雪)研究试验(商丘)项目(ZQC-H22256) （雪）
