J4 ›› 2008, Vol. 25 ›› Issue (1): 79-82.
• 技术与应用 • 上一篇 下一篇
刘俊卿1,2,杨军1,强德厚2
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基金资助:
国家自然科学基金项目(40375003)资助
LIU Junqing1,2 ,YANG Jun 1,QIANG Dehou2
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摘要:
针对气象资料难以满足高斯分布的情况,引进了具有耐抗性的三组耐抗线方法,分析了满足不同信度情况下最小二乘回归和三组耐抗线的差异,并用西藏近30 a气温资料进行了检验。结果表明三组耐抗线方法比最dx--乘法研究气候变化趋势有明显优势;采用最小二乘法得到的西藏气候变暖估计偏高
关键词: 三组耐抗线, 最dx--乘法, 气温变化
Abstract:
In the light of the question that meteorolo cal surface data are unfit to Gaussian distribution,the variation tendencies compu.ted with Tibet surface air temperature data by Three Group Resistance Line and Least SquaJ℃Regression Method were compared in tllis paper.Results show that Three Group Resistance Line is not significantly influenced by outliers and is useful for tendencv an alysis of meteorological records sometimes without suficient number of samples . The tendencies from Th ree Group Resistance Line were less than those from Least SquaJ℃Regression method in Tibet during 1971—2000.
Key words: Three Group Resistance Line, Least Square Regression Method , temperature variation
中图分类号:
P468
刘俊卿, 杨军, 强德厚. 研究气温变化趋势的新方法 — 三组耐抗线[J]. J4, 2008, 25(1): 79-82.
LIU Dun-Qing, YANG Jun, JIANG De-Hou. A New Method for Calculating Temperature Variation:Three Group Resistance Line[J]. J4, 2008, 25(1): 79-82.
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