中国西北地区台站迁移对气候资料均一性影响的研究进展

Research Progress on the Effect of Station Relocation on Climate Data Homogeneity in Northwest China

随着全球变暖的趋势越来越明显,气候变化研究也成为最受关注的问题。均一化长序列数据是气候变化研究的基础。然而由于台站的迁移等因素,导致了资料序列中的非均一性,这种包含非气候因素变化的非均一性气候序列直接影响了气候研究的不确定性。本文在综述国内外地面气候资料均一性检验方法、地面气候资料非均一性产生的原因等进展的基础上,重点分析了中国西北地区台站迁移对气候资料均一性的影响,认为台站迁移是造成气候资料不均一性的主要因素之一,使研究结果不能正确反映气候的变化趋势;国外成熟的均一性检验和订正方法为我国西北地区地面台站迁移对气候资料均一性的影响研究提供了可借鉴的思路、方法和手段;以往关于我国西北部地区气候变化的研究较少考虑气候序列中存在的非均一问题,造成了研究结论的不确定性。因此有必要对我国西北地区经过台站迁移的台站进行均一化的检验和订正。

As the trend of global warming more and more obvious,the climate change research is becoming the most concerned problem. Long homogeneous data is the basis of climate change research. However,the moving of stations,changing of equipment and the variety of observation rules result in the inhomogeneity of data series.These inhomogeneous climate series directly affects the climate research uncertainty. Based on the review of domestic and foreign surface climate data inhomogeneity testing methods,the causes of surface climate data inhomogeneity and other developments,this paper focuses on the analysis of the impact of station relocation on climate data inhomogeneity in Northwest China. The author believes that station relocation is one of the main factors causing the homogeneity of climate data. Thus,the research results cannot correctly reflect the trend of climate change. The mature homogeneity test and adjustment methods abroad provide useful ideas,methods and means for the study of the impact of surface station relocation on climate data inhomogeneity in Northwest China. Previous studies on climate change in Northwest China have rarely considered the inhomogeneity of the climate sequence,which has caused uncertainty in the conclusions of the study. Therefore,it is necessary to carry out homogeneity tests and adjustments to the stations that have moved through stations in the northwest of China.