太湖北岸太陽輻射的影響因子研究

doi:10.3969/2013jms.0082

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太湖北岸太陽輻射的影響因子研究
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                        10.3969/2013jms.0082
                    
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基金項目:江蘇省自然科學(xué)基金-青年基金(BK20130111);江蘇省氣象局重點項目(KZ201405);江蘇省科技支撐計劃社會發(fā)展重大研究(BE2012771);江蘇省氣象局預(yù)報員專項(201212,201204);

Analysis on influential factors of solar radiation in the north shore of Taihu Lake

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利用2 a的太陽輻射資料,對太湖北岸城鄉(xiāng)的太陽輻射特征進行了對比分析。發(fā)現(xiàn):(1)城市太陽總輻射較郊區(qū)明顯偏低,偏低幅度達到13 %以上。(2)太陽輻射量最小值一般發(fā)生在冬季,但最強太陽輻射卻不一定發(fā)生在夏季。這正好與6月中下旬到7月上中旬江南梅雨相對應(yīng)。(3)太陽輻射率隨云量增加而降低,5成云以下太陽輻射率變化不大,天空云量達到5成以上時對太陽輻射有較強的阻擋作用。晴到少云天氣,霾的嚴重程度對太陽輻射率影響較大,重度霾太陽輻射率不到無霾日的75 %。(4)降水對太陽輻射影響很大,但降水量級對太陽輻射的影響卻很小。氣溫與太陽輻射的關(guān)系很小,但白天平均氣溫＜0 ℃和≥30 ℃時太陽輻射率卻最大。太陽輻射隨日照減少而降低,但在日照時數(shù)為0時仍有太陽輻射率存在。太陽輻射基本上隨能見度的增加而增加。在晴朗少云的天氣里,由于能見度的影響太陽輻射率最大值是最小值的1.53倍。

Abstract:

By using the 2a solar radiation data of the urban and rural areas in the north shore of Taihu Lake, the solar radiation characteristics over the areas was comparativery anaryzed. Results showed as follows. (1) Solar radiation in urban areas is more than 13 % lower than that in rural areas. (2) The minimal solar radiation generally occurs in winter, but the maximal one is not necessarily in summer, which is well coincided with Jiangnan Meiyu occurring from mid-June to mid-July. (3) The solar radiation rate decreases with the cloud cover increasing. the solar radiation rate changes little with the cloud cover lower than 50%. while a strong blocking effect on solar radiation appears with the cloud cover more than 50 %. When the sky is sunny or brief cloudy, the severe haze has a greater impact on the solar radiation rate, and the solar radiation rate in heavy haze day is 75 % less than that in non-haze day.(4) Precipitation influences solar radiation a lot, but precipitation level influences it little. Temperature has a little relation with solar radiation, however, the solar radiation rate reaches the maximum under the condition of temperature <0 ℃ or ≥30 ℃. Solar radiation decreases with the sunshine hours decreasing, but even when the sunshine hour is 0, the solar radiation rate also exists. The solar radiation basically increases with the visibility increasing. In the brief cloudy days, the maximal solar radiation is able to reach 1.53 times of the minimal one.

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曹登峰,劉端陽,周彬,蘇艷.太湖北岸太陽輻射的影響因子研究.氣象科學(xué),2015,35(2):167-175 CAO Dengfeng, LIU Duanyang, ZHOU Bin, SU Yan. Analysis on influential factors of solar radiation in the north shore of Taihu Lake. Journal of the Meteorological Sciences,2015,35(2):167-175

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收稿日期:2013-07-05
最后修改日期:2013-08-20
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在線發(fā)布日期: 2015-05-08
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