摘要
高光谱大气探测仪具有高光谱分辨率、高灵敏度和高精度光谱辐射定标等特点,在大气温湿度廓线反演、数值天气预报同化、气候变化研究以及大气痕量气体探测等应用上有显著的优势。我国风云三号极轨气象卫星的FY-3A/B/C三颗卫星上成功装载了自主研制的通道式红外探测仪器—红外分光计(IRAS),获取了从可见光到红外波长范围内26个通道的辐射观测,并应用于资料同化、全球大气温度和水汽廓线反演等。从FY-3D星开始将装载红外高光谱大气探测仪以替代IRAS,标志着红外高光谱大气垂直探测系统新纪元的开始。以风云三号卫星红外高光谱大气探测仪为例,介绍了卫星红外高光谱探测技术的进展和地面应用系统预处理过程的关键技术环节,给出了红外高光谱资料的潜在应用,并对在数值天气预报同化和大气探测应用方面的难点问题进行了分析和探讨。
High spectral infrared sounders possess distinct advantages in application of atmospheric temperature and humidity profiles retrieval,numerical weather prediction（NWP）,climate change study and trace gas measurement due to high spectral resolution,low radiometric noise and high spectral and radiometric accuracy.Infrared Atmospheric Sounder（IRAS） was successfully launched onboard FY-3A/B/C satellites.It measures 26 channels of radiance from visible to infrared spectral range and was used in data assimilation,global atmospheric temperature and humidity profile retrieval,et al.A high spectral infrared atmospheric sounder（HIRAS） designed and manufactured completely by China will be carried onboard FY-3D,marking a new epoch of infrared high spectral vertical sounding system in China.FY-3D /HIRAS was taken as an example,and satellite infrared high spectral sounding technique and key preprocessing issues of high spectral infrared sounders were summarized as well as analysis and discussion of difficult problems that exist in high spectral infrared data application of NWP and climate study.
出处
《气象科技进展》
2016年第1期88-93,共6页
Advances in Meteorological Science and Technology
基金
国家高技术研究发展计划(2015AA123701)
国家自然科学基金(41275104)
中国科学院红外探测与成像技术重点实验室开放课题
