第二代自動氣象站不同氣溫觀測系統(tǒng)數(shù)據(jù)對比分析

doi:10.3969/2013jms.0029

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第二代自動氣象站不同氣溫觀測系統(tǒng)數(shù)據(jù)對比分析
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                        10.3969/2013jms.0029
                    
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基金項目:公益性行業(yè)（氣象）科研專項（GYHY201106049）

Comparisons of the different temperature observing systems of second generation AWS

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利用2009年8月—2010年7月的平行觀測數(shù)據(jù)，分析了第二代自動氣象站百葉箱氣溫觀測系統(tǒng)和氣候塔通風防輻射罩氣溫觀測系統(tǒng)的數(shù)據(jù)差異，討論了季節(jié)、月份以及時次等不同時間尺度下的太陽輻射強度和環(huán)境風速大小對這種差異的影響。結(jié)果表明：與百葉箱的數(shù)據(jù)相比，氣候塔的氣溫分鐘值、日均值和日最值等都平均偏低0.2 ℃左右；數(shù)據(jù)對比差隨太陽輻射的增強而變大，兩者間存在較強的正相關(guān)性，其中夏季、8月份和15時的偏差均值分別達到了0.29 ℃、0.30 ℃和0.31 ℃；數(shù)據(jù)對比差隨環(huán)境風速的增強而減小，兩者間呈較強的負相關(guān)性，當風速大于5.4 m/s時，數(shù)據(jù)對比差的平均值和標準差從風速小于1.5 m/s時的0.17 ℃和0.31 ℃分別減小到了0.12 ℃和0.10 ℃，而數(shù)據(jù)對比差小于0.2 ℃的樣本比例從60.3%提升到90.4%。

Abstract:

Based on the side by-side field comparison of louvred temperature system (LTS) and climate temperature system (CTS) of second generation automated weather station from Aug 2009 to Jul 2010, the difference between the data derived from them were analyzed; the relationship among data biases, solar radiation and wind speed were discussed under different time scales, such as season, month and hour. The result showed that: the temperature differences of minutely mean, daily mean and daily extreme between LTS and CTS were all less than 0.2 ℃. This kind of differences showed a positive correlation with solar radiation, but a negative one with wind speed. The mean differences were 0.29,0.30 and 0.31 ℃ in summer, August and at 15:00 respectively. When wind speed increased from 1.5 to 5.4 m/s, the mean temperature differences and their standard deviations decreased from 0.17 to 0.12 ℃ and from 0.31 to 0.10 ℃. Furthermore, the size of samples whose temperature differences between LTS and CTS were less than 0.2 ℃, increased form 60.3% to 90.4%.

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嚴家德,金蓮姬,王巍巍,王靜,吳迪.第二代自動氣象站不同氣溫觀測系統(tǒng)數(shù)據(jù)對比分析.氣象科學,2014,34(1):60-65 YAN Jiade, JIN Lianji, WANG Weiwei, WANG Jing, WU Di. Comparisons of the different temperature observing systems of second generation AWS. Journal of the Meteorological Sciences,2014,34(1):60-65

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收稿日期:2013-01-11
最后修改日期:2013-04-08
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