经典亮度温度和有效波长理论忽略了环境辐射的影响,且实际测温理论偏离了亮度温度的定义.考虑了环境辐射影响,提出新的有效亮度温度概念,使有效亮度温度适用于存在环境辐射的任意温度测量;进一步提出了基于带通辐射温度计测量的积分有...经典亮度温度和有效波长理论忽略了环境辐射的影响,且实际测温理论偏离了亮度温度的定义.考虑了环境辐射影响,提出新的有效亮度温度概念,使有效亮度温度适用于存在环境辐射的任意温度测量;进一步提出了基于带通辐射温度计测量的积分有效亮度温度和等效波长理论,使辐射温度计的"主观"测量结果与物体的客观辐射特性相联系,避免了实际测量理论偏离被测量定义.
Abstract：
The theories of classical radiance temperature (RT) and effective wavelength for pyrometry neglect the influence of ambient radiation,, and the actual measurement theories deviate from the strict definition of RT. Considering the effect of the ambient radiation, the new concept of the effective radiance temperature (ERT) which is suitable for a measurement at an arbitrary temperature is proposed. Based on the band-pass radiation thermometer, the theories of integral effective radiance temperature and equivalent wavelength are developed further, in which the deviations from the definition of ERT are avoided.展开更多
A new scheme that separates convective-stratiform rainfall is developed using threshold values of liquid water path(LWP) and ice water path(IWP).These cloud contents can be predicted with radiances at the Advanced Mic...A new scheme that separates convective-stratiform rainfall is developed using threshold values of liquid water path(LWP) and ice water path(IWP).These cloud contents can be predicted with radiances at the Advanced Microwave Sounding Unit(AMSU) channels(23.8,31.4,89,and 150 GHz) through linear regression models.The scheme is demonstrated by an analysis of a two-dimensional cloud resolving model simulation that is imposed by a forcing derived from the Tropical Ocean Global Atmosphere Coupled Ocean-Atmosphere Response Experiment(TOGA COARE).The rainfall is considered convective if associated LWP is larger than 1.91 mm or IWP is larger than1.70 mm.Otherwise,the rainfall is stratiform.The analysis of surface rainfall budget demonstrates that this new scheme is physically meaningful.展开更多
文摘经典亮度温度和有效波长理论忽略了环境辐射的影响,且实际测温理论偏离了亮度温度的定义.考虑了环境辐射影响,提出新的有效亮度温度概念,使有效亮度温度适用于存在环境辐射的任意温度测量;进一步提出了基于带通辐射温度计测量的积分有效亮度温度和等效波长理论,使辐射温度计的"主观"测量结果与物体的客观辐射特性相联系,避免了实际测量理论偏离被测量定义.
Abstract：
The theories of classical radiance temperature (RT) and effective wavelength for pyrometry neglect the influence of ambient radiation,, and the actual measurement theories deviate from the strict definition of RT. Considering the effect of the ambient radiation, the new concept of the effective radiance temperature (ERT) which is suitable for a measurement at an arbitrary temperature is proposed. Based on the band-pass radiation thermometer, the theories of integral effective radiance temperature and equivalent wavelength are developed further, in which the deviations from the definition of ERT are avoided.
基金National Key Basic Research and Development Project of China(2013CB430103,2015CB453201)National Natural Science Foundation of China(41475039,41375058,41530427)Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)
文摘A new scheme that separates convective-stratiform rainfall is developed using threshold values of liquid water path(LWP) and ice water path(IWP).These cloud contents can be predicted with radiances at the Advanced Microwave Sounding Unit(AMSU) channels(23.8,31.4,89,and 150 GHz) through linear regression models.The scheme is demonstrated by an analysis of a two-dimensional cloud resolving model simulation that is imposed by a forcing derived from the Tropical Ocean Global Atmosphere Coupled Ocean-Atmosphere Response Experiment(TOGA COARE).The rainfall is considered convective if associated LWP is larger than 1.91 mm or IWP is larger than1.70 mm.Otherwise,the rainfall is stratiform.The analysis of surface rainfall budget demonstrates that this new scheme is physically meaningful.
