热带气象学报2025，Vol.41Issue(6)：758-766,9.DOI:10.16032/j.issn.1004-4965.2025.069
风云卫星华南降水检验站雨滴谱和雨量计瞬时降水一致性对比
Comparison of Rainrate Between Raindrop Spectra and Rain Gauge Observations of the South China Precipitation Validation Station of Fengyun Meteorological Satellite
摘要
Abstract
Data from four two-dimensional raindrop spectrum at the Fengyun Satellite South China Precipitation Validation Station,along with co-located minute rain gauge data from Apirl to May 2024,were used.The consistency of precipitation observations between the two instruments was analyzed by comparing cumulative rainfall and instantaneous rain rates.The results indicate that at three of the four stations,the cumulative rainfall from the disdrometer exceeded that from the rain gauge by 10%to 13%.At a certain station,the disdrometer's cumulative rainfall was 0.5%lower.The correlation coefficient for cumulative rainfall was high,with an average above 0.99.When comparing instantaneous rain rate,applying a cubic spline interpolation to the rain gauge data significantly reduced the bias and mean absolute error between the the two instruments.This was particularly effective for weak precipitation(<10 mm·h-1)with discontinuous observations,where the correlation coefficient can be increased from 0.37 to approximately 0.8.This indicates that the interpolation method is reasonable and feasible for generating high-temporal-resolution instantaneous precipitation rate datasets from conventional rain gauge.The evaluation demonstrated good consistency between the two-dimensional raindrop spectrum and the rain gauge,suggesting these datasets can support the ground validation and algorithm improvement of Fengyun satellite precipitation retrieval products.关键词
雨滴谱/雨量计/累积降水量/瞬时降水率/地面真实性检验Key words
raindrop spectrum/rain gauge/cumulative rainfall/instantaneous rain rate/ground validation分类
天文与地球科学引用本文复制引用
WU Qiong,WANG Gang,HAN Bowei,DONG Lixin,SHANG Jian,CHEN Lin..风云卫星华南降水检验站雨滴谱和雨量计瞬时降水一致性对比[J].热带气象学报,2025,41(6):758-766,9.基金项目
国家自然科学基金项目(42475074) （42475074）
国家重点研发计划项目(2023YFB3905900、2023YFB3905903) （2023YFB3905900、2023YFB3905903）
中国气象局创新发展专项(CXFZ2024J062) （CXFZ2024J062）
中国气象局青年创新团队项目(CMA2023QN12)共同资助 （CMA2023QN12）
