| 同位素温标的显著性水平 |
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| 引用本文：贾艳琨,王经兰,王东升.2005.同位素温标的显著性水平[J].地球学报,26(z1):303-306. |
| DOI：10.3975/cagsb.2005.s1.98 |
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| 中文摘要:在中国大气降水年均同位素δ值与年均地面气温之间，在α为0.01的显著性水平存在直线关系，氢同位素温标为3.1‰℃，氧同位素温标为0.36‰℃。但是，在月均δ值与月均地面气温之间的关系比较复杂：①在中国北方，氧同位素温标由西向东为0.65-0.10‰℃。相关指数自西向东为0.73-0.14，显著性水平均达到α为0.01；②在中国南方，显著性水平虽达α为0.01，但是温标皆小于零，相关指数小于0.5；③南京、武汉、长沙、拉萨、西安和太原等台站，月均同位素δ值与月均地面气温之间无相关性。 |
| 中文关键词:同位素 地面气温 温标 显著性 |
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| The Significance Level of Stable Isotope Thermaometer of Precipitation in China |
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| Abstract:According to multi-year average values from 32 stations in Chinese network, a good linear relationship with the significance level α=0.01 exists between δ-values of precipitation and surface air temperature. The H-isotope thermometer is about 3.1‰/℃,and the O-isotope thermometer is about 0.36‰/℃.The stations with the significance level of α=0.01 and the monthly isotope thermaometer >0 are located in North China(to the north of the Qinling Mountain and the Huaihe River) with latitude from 37°N up to larger than 47°N, where the determination coefficients are 0.41≤R2≤0.73 in the west stations and 0.14≤R2≤0.56 in the east stations and the monthly O-isotope thermometer ranges from 0.10 to 0.65‰/1℃. The stations with the significance level of α=0.01 and B<0 are located in south China (to the south of the Qinling Mountain and the Huaihe River) with low latitude,i.e. from latitude of 32°N down to 20°N,where the determination coefficients are mostly R2<0.5 and the monthly O-isotope ther-mometers are wholly <0. Some of the stations witha =0 and 0.0002 |
| keywords:sisotope surface air temperature thermometer significance |
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