DOI: 10.1002/2015JD024583
论文题名: Reassessing changes in diurnal temperature range: A new data set and characterization of data biases
作者: Thorne P.W. ; Menne M.J. ; Williams C.N. ; Rennie J.J. ; Lawrimore J.H. ; Vose R.S. ; Peterson T.C. ; Durre I. ; Davy R. ; Esau I. ; Klein-Tank A.M.G. ; Merlone A.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2016
卷: 121, 期: 10 起始页码: 5115
结束页码: 5137
语种: 英语
英文关键词: diurnal temperature range
; homogeneity
; trends
Scopus关键词: algorithm
; artifact
; data set
; diurnal variation
; environmental assessment
; estimation method
; global change
; homogeneity
; meteorology
; temperature gradient
; trend analysis
; twentieth century
英文摘要: It has been a decade since changes in diurnal temperature range (DTR) globally have been assessed in a stand-alone data analysis. The present study takes advantage of substantively improved basic data holdings arising from the International Surface Temperature Initiative's databank effort and applies the National Centers for Environmental Information's automated pairwise homogeneity assessment algorithm to reassess DTR records. It is found that breakpoints are more prevalent in DTR than other temperature elements and that the resulting adjustments have a broader distribution. This strongly implies that there is an overarching tendency, across the global meteorological networks, for nonclimatic artifacts to impart either random or anticorrelated rather than correlated biases in maximum and minimum temperature series. Future homogenization efforts would likely benefit from simultaneous consideration of DTR and maximum and minimum temperatures, in addition to average temperatures. Estimates of change in DTR are relatively insensitive to whether adjustments are calculated directly or inferred from adjustments returned for the maximum and minimum temperature series. The homogenized series exhibit a reduction in DTR since the midtwentieth century globally (−0.044 K/decade). Adjustments serve to approximately halve the long-term global reduction in DTR in the basic “raw” data. Most of the estimated DTR reduction occurred over 1960–1980. In several regions DTR has apparently increased over 1979–2012, while globally it has exhibited very little change (−0.016 K/decade). Estimated changes in DTR are an order of magnitude smaller than in maximum and minimum temperatures, which have both been increasing rapidly on multidecadal timescales (0.186 K/decade and 0.236 K/decade, respectively, since the midtwentieth century). ©2016. American Geophysical Union. All Rights Reserved. This article has been contributed to by US Government employees and their work is in the public domain in the USA. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62855
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
There are no files associated with this item.
作者单位: Department of Geography, National University of Ireland Maynooth, Maynooth, Ireland; Nansen Environmental and Remote Sensing Center/Bjerknes Centre for Climate Change, Bergen, Norway; NOAA's National Centers for Environmental Information-Asheville, Asheville, NC, United States; Cooperative Institute for Climate and Satellites, Asheville, NC, United States; Asheville, NC, United States; KNMI, De Bilt, Netherlands; Istituto Nazionale di Ricerca Metrologica, Torino, Italy
Recommended Citation:
Thorne P.W.,Menne M.J.,Williams C.N.,et al. Reassessing changes in diurnal temperature range: A new data set and characterization of data biases[J]. Journal of Geophysical Research: Atmospheres,2016-01-01,121(10)