红外辐射在雨中的衰减

利用红外光谱辐射计在大气窗口区对连续性降水的红外辐射衰减进行了测量，结果表明雨对光的衰减与降雨强度密切相关，根据测量结果得到了红外辐射在雨中衰减的定量关系式，并利用Ｍａｒｓｈａｌ－Ｐａｌｍｅｒ雨滴尺度谱分布，计算了红外辐射在雨中的衰减，考虑雨的前向散射修正后，计算结果与测量结果符合得较好．

EXTINCTION OF INFRARED RADIATION BY RAIN

Extinction of infrared radiation through continuous rain was measured with an infrared spectral radiometer at the wavelengths of atmospheric windows. Experimental results show that the extinction by rain is closely correlated with the precipitation rate. The quantitative relationship between extinction and precipitation rate was obtained from the experimental results. Extinciton by rain was also calculated using the Marshall Palmer particle size spectral distribution, and the calculated extinction coefficient coincides with the measurement results quite well when the forward scattering correction is considered.