利用太阳辐射计940nm通道反演大气柱水汽总量

被引:19
作者
胡秀清
张玉香
黄意玢
张广顺
机构
[1] 国家卫星气象中心!北京
关键词
太阳辐射计; 改进Langley法; 大气柱水汽总量;
D O I
10.19517/j.1671-6345.2001.03.002
中图分类号
P412 [探测技术与方法];
学科分类号
摘要
利用太阳辐射计CE318近红外 94 0nm水汽吸收通道和临近窗区通道反演大气柱水汽总量 ,由于大气在 94 0nm附近有水汽吸收 ,该通道不能采用通常Langley法处理 ,而采用改进的Lan gley法。利用MODTRAN3.7模式模拟出太阳辐射计 94 0nm通道透过率与水汽量关系常数 ,考虑了通道的光谱响应函数和不同大气模式的影响 ,模拟结果表明窄通道 (小于 10nm)上述关系常数受大气模式影响不大。总消光剔除气溶胶和分子散射 ,就得出水汽的透过率 ,从透过率反演水汽量。处理了敦煌和青海湖辐射校正场 1999年 7月场地大气特性测量兼FY 1C辐射定标期间的数据 ,反演的平均水汽量与探空水汽积分比较 ,差别在 12 %以内。还计算出一天中不同时刻的水汽量 ,给出了同步观测 6天卫星过顶前后 15min平均水汽量 ,该水汽量用于FY 1C卫星遥感器辐射定标时辐射传输模式的输入参数。结果表明太阳辐射计是一种便携有效测量水汽量仪器
引用
收藏
页码:12 / 17
页数:6
相关论文
共 10 条
[1]  
Determination of precipitable water from solar trasmission. Thome K J,B M Herman and Reagan J A. Journal of Applied Meteorology . 1992
[2]  
Water vapor column abundance retriewvals during FIFE. Bruegge C J,Conel J E,Green R R O,et al. Journal of Geophysical Research . 1992
[3]  
Optical depth measurements of aerosol, cloud , and water vapor using sun photometers during FIRE cirrus IFO II.Appl. Masataka Shiobata,Shinhirne D. Meteoritics . 1996
[4]  
Sunphotometric measurements of atmospheric water vapor column abundance in the 940 nm band. Halthore R N,Eck T F,Holben B N,et al. Journal of Geophysical Research . 1997
[5]  
A simple instrument and technique for measuring columnar water vapor via near-IR differential solar transmission measurements. Reagan J,Thome K J and Herman B M. IEEE Transactions on Geoscience Electronics . 1992
[6]  
Atmospheric correction and calibration during KUREX-91,IGARSS’92. Halthore R N,Markham B L and Deering D W. Int. Geosci. Remote Sens. Symp . 1992
[7]  
Atmospheric correction and calibration during KUREX-91,IGARSS’92. Halthore R N,Markham B L and Deering D W. Int. Geosci. Remote Sens. Symp . 1992
[8]  
A comparision of sunphotometer derivations of total column water vapor and ozone to satandard measures of same at the southern Great Plains atmospheric radiation measurement site. Michalsky J,Liljegren C and Harrison L C. Journal of Geophysical Research . 1995
[9]  
Comparison of modeled and empirical approaches for retrieving columnar water vapor from solar transmittance measurements in the 0. 94 μm region. Schmid B,Thome K J,Demoulin P,et al. Journal of Geophysical Research . 1996
[10]  
Threechannel solar radiometer for the determination of atmospheric columnar water vapor. Thome K J,Smith M W,Palmer J M,et al. Applied Optics . 1994