J4 ›› 2003, Vol. 21 ›› Issue (3): 29-33.

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Characteristics of the Radiation Budget over Oases in Arid Region

 JI Guo-Liang, MA Xiao-Yan, JU Ji-Ling-、Lv-Lan-Zhi   

  1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences,Lanzhou  730000 .China
  • Received:2003-07-08 Revised:2003-09-04 Online:2003-09-30 Published:2003-09-30

黑河地区绿州和沙漠地面辐射收支的若干特征

季国良马晓燕邹基玲、吕兰芝   

  1. 中国科学院寒区旱区环境与工程研究所甘肃兰州730000
  • 作者简介:季国良(1942-),男,江苏省张家港市人,研究员,博士生导师,主要从事青藏高原和干旱地区辐射气候学及气候研究
  • 基金资助:

    HEIFE实验基础上完成国家重点基础研究发展规划项目“青藏高原形成演化及其环境资源效应”(G1998040803)和 中国科学院青藏高原研究项目(KZ951一A1一204 , K795 T - 06)共同资助

Abstract:

In thi s paper .the characteristics of the radiation budget over two types underlying surface are analyzed by using the data observed in oases (Zhangye)and desert in HEIFE.  The results show that:in the arid region .the surface albedo is smaller in oases than in desert and its seasonal variation is obvious.  The surface ipward longwave radiation is also smaller in oases than in desert.the effec tive radiation is smaller in oases than in desert and its seasonal variation is obvious .too.  The surface net radiation is lager in oases than in desert and the energy from surface to atmosphere is latent heat mainly.  The annual total of Photosynthetically Active Radiation (PAR) is larger over oases in arid region than that in Hebei and Shandong.  In arid region the PAR resource is very rich.

Key words: Arid region, Surface albedo, Surface effective radiation, Photosynthetically active radiation, Radiation budget

摘要:

利用HEIFE中在绿州积沙漠两个测站所取得的资料,分析了两种不同下垫面辐射收支及其季节变化特征。结果表明:绿州区地表反射率明显小于沙漠区,季节变化明显;地面向上长波辐射绿州小于沙漠,地面有效辐射绿州大于沙漠,且季节变化明显;地表净辐射绿州大于沙漠,其能量以潜热
为主输入大气;干旱地区的绿州光合有效辐射年总量大于河北、山东等地,光合有效辐射资源极为丰富.

关键词: 光合有效辐射, 辐射收支, 干旱地区, 地表反射率, 地面有效辐射

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