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Quality Evaluations and Comparisons of Radiation Data at Lin'an and Longfengshan Stations
Author(s): 
Pages: 65-74
Year: Issue:  1
Journal: Journal of Applied Meteorological Science

Keyword:  太阳辐射大气向下长波辐射质量评估;
Abstract: 采用国际通用的辐射数据质量评估方法对2005-2011年浙江临安、黑龙江龙凤山两个区域大气本底站辐射观测资料进行质量评估与比较分析.结果表明:两站辐射数据通过物理可能限制检验与极端罕见限制检验的百分比均超过99.5%,但通过相关要素比较限制检验的百分比上,临安与龙凤山站分别降至97.9%与95.9%;双轴定位追踪太阳出现偏差是造成直接辐射与散射辐射数据精度降低的主要原因.CM21表的热偏移在-5 W·m-2以内,而其进行热偏移订正可以显著提高数据的通过率.对应同一太阳天顶角,临安站晴空总辐射与直接辐射均低于龙凤山站,散射辐射则相反,其原因是临安的大气透明系数较低,大气浑浊度较高.2006-2011年,临安站的大气向下长波辐射呈下降趋势,达到了0.01的显著性水平,且其多年平均值(363.7±59.3 W·m-2)显著高于龙凤山站(274.9±77.6 W· m-2);龙凤山站晴空太阳总辐射呈增加趋势,达到了0.1的显著性水平.
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