中文摘要：

利用MODTR．AN大气辐射传输模型，输入我国南海区域大气廓线数据，对比分析气溶胶对红外波段大气透过特性的影响。研究表明，气溶胶、温度和季节对该波段在大气中传榆均有一定影响；南海区域大气透过率随季节变化很大，夏季比冬季小10％以上，00时大气透过率略大于12时；采用近似国外模式大气带来的误差最大可达到50％以上。该研究结果充分说明：在红外波段大气透过率计算中引入实际大气廓线数据具有重要的军事和工程应用意义。

英文摘要：

Inputting the South China Sea actual atmospheric profile data to the MODTRAN model, comparative analysis of aerosol transmission characteristics of the infrared band was given. The studies show that the aerosol, temperature and season could affect this band＇s transfer in the atmosphere; the atmospheric transmittance changes with the seasons, in summer less than in winter 10%, under the same circumstances atmospheric transmittance 0：00 is slightly larger than the 12：00. The error caused using approximate model atmosphere abroad can reach more than 50%. The results fully explained that the introduction of the actual atmospheric profile data have important significance of the military and engineering applications.