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Distribution of Solar Radiation Transmission and Heating Rate of Yellow Sea in Spring

Author: QiuGuoQiang
Tutor: ZhangTingLu
School: Ocean University of China
Course: Detection and processing of marine information
Keywords: Solar radiation Transmittance Heating rate Inherent optical properties
CLC: P422.1
Type: Master's thesis
Year: 2010
Downloads: 32
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Abstract

Solar radiation energy transmission through the upper ocean is the basis of the upper ocean thermal, dynamics and primary productivity quantitative analysis and modeling. Solar radiation is divided into short-wave radiation and infrared radiation (700nm divided), infrared radiation attenuation coefficient is large, the upper 3m within almost all absorbed, and regardless of the composition of the water body. Shortwave radiation to penetrate a certain depth of water and its direct heating, the attenuation coefficient associated with the inherent optical properties. This article based MOMO radiation transfer simulation tools, voyage measurement to SOLAS ACS data as input, analog spring Yellow Sea at noon cloudless noon, cloudy morning cloudy shortwave radiation, infrared radiation using existing mature model calculations, and then analyze three kinds of environment under the conditions of solar radiation transmission and spatial distribution of the heating rate characteristics and inherent optical properties, cloud, sun zenith angle of impact. Environmental conditions are the same underwater sun radiation depends only on the short-wave radiation of transmittance and heating rate spatial distribution characteristics of the same characteristics with the space distribution of the short-wave radiation transmission, the smaller the smaller regional shortwave radiation transmittance of solar radiation transmittance the greater the heating rate. Subei shoal waters of Shandong Peninsula, the South Yellow Sea the same depth shortwave radiation transmittance is relatively small. The shortwave radiation impact factors inherent optical properties (absorption and scattering), the single scattering albedo in the Yellow Sea is greater than 0.6, the scattering of short-wave radiation is higher than absorption. The waters of northern Jiangsu of shoals and Shandong Peninsula high inorganic content of the suspension the absolutely dominant factors affect the transmission of short-wave radiation, scattering, absorption of shortwave radiation affect other regions can not be ignored, Central South Yellow Sea phytoplankton absorb high lead to short-wave radiation transmittance relative small. Sky completely covered by clouds, shortwave radiation transmittance is less than the cloudless, and infrared albedo greater than the cloudless, corresponding infrared radiation transmittance should be less than the cloud-free, but the cloud increases The proportion of short-wave radiation to the total radiation, resulting in the total solar radiation transmittance greater than the cloudless, the biggest difference of 0.042. Cloudy incident on the sea surface solar radiation is 197.9 W/m2, than cloudless 926.5 W/m2 small 78.64%, the heating rate is reduced by 78% -82%. The morning solar zenith angle greater than 45 ° at noon 25 ° shortwave radiation transmittance less than noon, the infrared transmittance slightly difference is very small, the same proportion of short-wave radiation zenith angle by changing the shortwave radiation transmittance to change the solar radiation transmittance of solar radiation transmittance is 25% smaller than in noon less than in the morning. Morning incident on the sea solar radiation is 684.7W/m2, less than noon cloudless solar radiation, cloud heating rate than noon cloudless 25% -30% smaller in the morning.

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CLC: > Astronomy,Earth Sciences > Atmospheric science (meteorology ) > Meteorological elements,atmospheric phenomenon > Atmospheric radiation > Solar radiation
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