紫外辐射在气-水界面衰减因素分析及预测模型  

Analyse for Attenuation Factors of Ultraviolet Radiation in the Air-Water Interface and Prediction Model

作　　者：王锦旗[1] 陈霞 宋玉芝[1] 郑建伟[1] 

机构地区：[1]南京信息工程大学应用气象学院,江苏南京210044 [2]江苏省地理信息资源开发与利用协同创新中心,江苏南京210023

出　　处：《生态环境学报》2015年第10期1660-1667,共8页Ecology and Environmental Sciences

基　　金：教育部人文社会科学研究一般项目资助(15YJCZH167);国家自然科学基金项目(41105113)

摘　　要：为研究紫外线从大气进入水体的衰减状况,利用SpectroSense2光谱仪测量了大气及水体表层的UVR(UV-A+UV-B)、UV-A、UV-B强度,同时测定相关水体环境因子,并进行了相关因素分析。结果表明:UVR、UV-A、UV-B从大气进入水体表层后随即产生衰减,其中UVR平均衰减率达27.6%,UV-A达29.2%,UV-B达30.8%。3种水体中,以清洁水体衰减最多,富营养化水体衰减最少。水体藻类含量对紫外线衰减影响较大,水体藻类含量越高,对紫外线吸收率越低,紫外线进入水体衰减率越低。因此,清洁水体对紫外线吸收率最高,衰减率最大;富营养化越高水体,藻类含量越高,对紫外线吸收率越低,衰减率越低。太阳紫外线在气水界面穿透过程中,紫外线入射角度越大,在气水界面穿透过程中衰减量越大。利用一元线性回归方程建立UVR、UV-A、UV-B在气-水界面衰减模型,3个回归模型均通过F检验、R检验和t检验,可用于紫外辐射在气-水界面衰减量的预测。The attenuation of ultraviolet radiation in the air-water interface is studied, UVR, UV-A, UV-B intensity of atmospheric and surface water and some water environmental factors are determined, and their correlation is analyzed. The results show that UVR, UV-A, UV-B attenuates from the atmosphere into the surface water immediately, the UVR average attenuation rate is 27.6%, UV-A average attenuation rate is 29.2%, UV-B average attenuation rate is 30.8%, the max attenuation rate in the most clean water, the minimum in the eutrophication water. Algae content is the great influencing factor on the attenuation of ultraviolet radiation in the air-water interface, the ultraviolet radiation absorption rate is low when the algae content is higher in water, so the attenuation rate of ultraviolet radiation in the air-water interface is low, The algae content is the lowest in the clean water in the absorption rate of ultraviolet is the highest, so the attenuation rate is the max, the algae content is higher in the eutrophication water, the UV absorption rate is low, so the attenuation rate is low. The incident angle is a important factor in the attenuation of ultraviolet radiation in the air-water interface, the attenuation rate is more when the incident angle is bigger. The attenuation model of UVR, UV-A, UV-B in the gas-water interface was established by using a linear regression equation, all three regression models passed the F test, R test and t test, they can be used to predict.

关 键 词：紫外辐射 衰减率 藻类含量 入射角度 浊度 

分 类 号：X524[环境科学与工程—环境工程]