| 不同方法计算的气温平均值差异分析 |
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| 引用本文： | 刘小宁,张洪政,李庆祥.不同方法计算的气温平均值差异分析[J].应用气象学报,2005,16(3):345-356. |
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| 作者姓名： | 刘小宁 张洪政 李庆祥 |
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| 作者单位： | 国家气象信息中心, 北京 100081 |
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| 基金项目： | 国家科技部国家科技基础性工作专项资金项目“气象资料共享系统建设”(2002DEA30041)资助。 |
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| 摘 要： | 利用1961～2002年699个国家基本（基准）站的时值气温观测资料，分析了我国不同方法计算的气温平均值的差异。结果表明:平均气温计算值由于受4次观测、3次观测不同的计算方法的影响，造成4次、3次观测记录平均值产生一定差异。其差异在空间分布中具有明显的特征，西部、北部地区3次平均值偏高；东南部地区3次平均值偏低。中西部地区4次、3次气温平均值的差异具有扩大的趋势，是由于最低气温的升高引起的。因此，在使用气温平均值时，要充分重视平均气温值的计算方法，避免误差。
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| 关 键 词： | 计算 气温平均值 差异 |
| 收稿时间： | 2004-01-06 |
| 修稿时间： | 2004年1月6日 |
Analyses on Average Temperature Difference Resulted from Different Calculation Methods |
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| Liu Xiaoning Zhang Hongzheng Li Qingxiang.Analyses on Average Temperature Difference Resulted from Different Calculation Methods[J].Quarterly Journal of Applied Meteorology,2005,16(3):345-356. |
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| Authors: | Liu Xiaoning Zhang Hongzheng Li Qingxiang |
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| Affiliation: | National Meteorological Information Center , Beijing 100081 |
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| Abstract: | Based on the temperature observations at 699 national base stations from 1961 to 2002, analysis is performed of the difference between average temperatures by means of different methods. The result shows that due to different calculating methods with 4 observations and 3 observations on a daily basis, certain difference arises in averaging 4 and 3 observations. This difference is remarkable in spatial distribution. The 3 observations averaging is higher in the west and north,but low in the southeast. There is an increasing tendency in the difference for the central and western part, owing to the rise of minimum temperature. As a result, in using mean temperatunes attention should be paid to the methods to avoid errors when the average of temperatune is applied in study. |
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| Keywords: | Calculation Average of temperature Difference |
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