摘要
FY-2C静止气象卫星中红外通道(3.5～4.0μm)比较特殊,在该通道,地球长波辐射和太阳短波入射辐射的强度基本相同,因此在应用时需要同时考虑大气的散射和热发射两种过程。作者对这两种过程进行了分析,用SBDART辐射传输模式模拟计算了FY-2C中红外通道接收的总辐射、热辐射及散射辐射,分析了它们的特性及对云滴粒子有效半径的敏感性,并提出从该通道接收总辐射中扣除地面及云热辐射贡献项的经验关系式。
The mid-infrared channel（3.5-4.0μm） of Geostationary Meteorological Satellite FY-2C is special,at which earth outgoing long-wave radiation and solar incoming short-wave radiation are basically of the same intensity. Therefore it is necessary to take into account both the atmospheric scattering and the thermal emission,and detailed researches are conducted on the two processes.Total radiation,thermal radiation and scattering radiation received from the mid-infrared channel of FY-2C are simulated by using radiative transfer model SBDART.And the radiation characteristics and sensitivity to cloud droplet particle effective radius are analyzed.Then an empirical relationship was proposed about removing the thermal radiation emitted by the earth＇s surface and clouds from the total radiation received in the mid-infrared channel of FY-2C.
出处
《气象》
CSCD
北大核心
2010年第2期39-47,共9页
Meteorological Monthly
基金
国家科技支撑计划项目(2006BAC12B04)
关键词
中红外通道
云粒子有效半径
辐射传输模式
经验关系式
mid-infrared channel
particle effective radius
radiative transfer model
empirical relationship
