| 摘要: |
| 利用渤海辽东湾JZ20-2石油平台上的气象和海冰观测数据，研究了冰季大气层和云层对太阳辐射的影响。结果表明，辽东湾冰季大气光学质量可取为0.83，碧空、少云、多云、阴天、雾天和雨雪等不同天气条件下的云量系数可分别取为0、3、6、8、9和10。分析了冰水混合情况下海面对太阳辐射的反射情况；讨论了太阳辐射对冰面长波辐射和对流传热的影响；利用冰面太阳辐射的实测值和计算结果，对整个冰季内太阳辐射的规律进行了分析，发现其对海冰厚度的变化趋势起到一定的控制作用。将冰季太阳辐射的计算方法引入到渤海海冰数值模式中，可提高海冰数值模拟和预测结果的精度。 |
| 关键词: 海冰 太阳辐射 大气光学质量 云量系数 |
| DOI：10.11693/hyhz200005016016 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目，59739170号;中国海洋石油渤海公司重点资助项目 |
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| SOLAR RADIATION ON SEA ICE IN LIAODONG BAY |
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YUE Qian-jin1, JI Shun-ying1, MIAO Wen-dong2, WU Shu-li2
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1.State Key Laboratory of Structural Analysis of Industrial Equipment, Dalian University of Technology, Dalian, 116023;2.Bohai Oil Engineering Corporation, Tianjin Tanggu, 300450
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| Abstract: |
| It is necessary to determine the parameters of thermodynamics and dynamics in sea ice numerical model precisely for accurate forecasting sea ice. The solar radiation plays a key role in thermal processes as well affects other thermal factors such as the long wave radiation and convective heat flux. Based on the field observations on the JZ20-2 platform in Liaodong Bay, the influences of atmosphere and cloud cover on solar radiation during freezing periods in this area are discussed. The optical air mass is 0.83 in the winter of Liaodong Bay, and the cloud coefficients can be selected as 0, 3, 6, 8, 9 and 10 under the weather conditions of clear sky, partly cloudy, cloudy, overcast sky, fog and rain respectively. The reflection of solar radiation on mixed ice-water region is also discussed. The analysis of thermodynamic calculation shows that the solar radiation influences the long wave radiation and sensitive heat of the ice surface, and it is the controlling factor during the growth and melting of sea ice. The precision of sea ice simulation and forecast can be improved if the computational methods of solar radiation in the ice season are adopted in the sea ice numerical model of the Bohai Sea. |
| Key words: Sea ice, Solar radiation, Optical air mass, Cloud coefficient |
