台湾海峡上空垂向大气漫透射率的季节变化  

Seasonal variations of atmospheric diffuse transmittance in Taiwan Strait area

作　　者：刘亚豪[1] 刘玉光[1] 修鹏[1] 周良明[1] 

机构地区：[1]中国海洋大学物理海洋重点实验室,山东青岛266100

出　　处：《海洋环境科学》2011年第6期784-788,共5页Marine Environmental Science

基　　金：海洋公益性行业科研专项(201005027-4)

摘　　要：根据地物光谱仪在可见光和近红外波段的观测数据,获取了台湾海峡海区2006年夏、冬季和2007年春、秋季的垂向大气漫透射率,并对之进行了统计分析。研究发现,台湾海峡海区的垂向大气漫透射率具有明显的季节变化,春秋季节的垂向大气漫透射率明显高于冬夏季节,且不同季节的垂向大气漫透射率具有不同的波长分布特征。该海区垂向大气漫透射率平均值显著低于无气溶胶时的透射率理论值。根据测得的大气总光学厚度可知,气溶胶光学厚度,特别是海洋性气溶胶光学厚度的季节变化对垂向大气漫透射率的季节变化有最重要的影响。Based on measurements in-situ,the seasonal variations of atmospheric diffuse transmittances in Taiwan Strait area were calculated and analyzed.The measurements were obtained during 2006 and 2007 by a Field Spectral Radiometer in visible and NIR bands.The study showed that the atmospheric diffuse transmittance had evident seasonal variations,and the values in spring and autumn were much larger than winter and summer.The spectral dependences of diffuse transmittance also varied among different seasons.The average values of atmospheric diffuse transmittance were remarkably lower than ideal ones without considering aerosol.The results showed the type and optical thickness of aerosol,especially oceanic aerosol,and the significant effect on the seasonal variations of atmospheric diffuse transmittance in this area.

关 键 词：大气漫透射率 季节变化 地物光谱仪 台湾海峡 气溶胶光学厚度 

分 类 号：P732[天文地球—海洋科学]