华东师范大学学报（自然科学版）Issue(3)：146-156,11.DOI:10.3969/j.issn.1000-5641.2018.03.016
高光谱红外探测仪温湿度廓线在华东地区的真实性检验
Validation of temperature and relative humidity profiles with satellite hyperspectral infrared sounder over East China
摘要
Abstract
Satellite hyperspectral infrared data provide high temporal and spatial resolution information on atmospheric temperature and humidity profiles.They are important data source for numerical weather prediction models.Quality control of the data and correct characterization of observation errors are key to the successful application of assimilation.The radiosonde data is a direct measurement with high precision,which can be used to validate satellite retrievals.During the flood season of East China,high density radiosonde observations provide a valuable opportunity to examine the quality and quantify the error of Atmospheric Infrared Sounder (AIRS) retrieved products,both of which have a similar observation time at 14:00 Beijing time.This study focuses on East China during the summer of 2015.Results show that the AIRS retrieved temperature profiles are in good agreement with the radiosonde data,whilst the AIRS retrieved relative humidity profiles show the phenomenon of wetter in higher layers and drier in lower layers.The RMSE difference of temperature and relative humidity range from 1.02 ℃ to2.49 ℃ and from 12.91％ to 23.43％,respectively.Under the AIRS and AMSU (Advanced Microwave Sounding Unit) joint inversion products,the accuracy of retrieved temperature and humidity profiles are gradually degraded with the increasing number of total cloud fraction,but the results maintain a certain accuracy as a whole.This study provides a basis for the satellite data assimilation application under cloud cover.关键词
AIRS/温湿度廓线/探空资料/华东地区/云覆盖Key words
AIRS/temperature and humidity profiles/radiosonde data/East China/total cloud fraction分类
天文与地球科学引用本文复制引用
顾雅茹,刘延安,刘朝顺,李正龙..高光谱红外探测仪温湿度廓线在华东地区的真实性检验[J].华东师范大学学报（自然科学版）,2018,(3):146-156,11.基金项目
国家自然科学基金(41601469) （41601469）
上海市科委科研计划项目(15dz1207805) （15dz1207805）
上海市气象科技联合中心合作基金(LHZX201601) （LHZX201601）
