A new method to study inhomogeneities in climate records: Brownian motion or random deviations?
A new method to study inhomogeneities in climate records: Brownian motion or random deviations?
复制标题
研究气候记录不均匀性的新方法:布朗运动还是随机偏差?
DOI:
10.1002/joc.6105
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
V. Venema
中科院分区:
文献类型:
--
作者:
Lindau;V. Venema
Climate data is affected by inhomogeneities due to historical changes in the way the measurements were performed. Understanding these inhomogeneities is important for accurate estimates of long-term changes in the climate. These inhomogeneities are typically characterized by the number of breaks and the size of the jumps or the variance of the break signal, but a full characterization of the break signal also includes its temporal behavior. This study develops a method to distinguish between two types of breaks: random deviations from a baseline and Brownian motion. Strength and frequency of both break types are estimated by using the variance of the spatiotemporal differences in the time series of two nearby stations as input. Thus, the result is directly obtained from the data without running a homogenization algorithm to estimate the break signal from the data. This opens the possibility to determine the total number of breaks and not only that of the significantly large ones. The application to German temperature observations suggests generally small inhomogeneities dominated by random deviations from a baseline. US stations, on the other hand, show also the characteristics of a strong Brownian motion type component.
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DOI:
10.1002/joc.4366
发表时间:
2015
期刊:
International Journal of Climatology
影响因子:
--
作者:
Lindau;Victor Venema
通讯作者:
Victor Venema
影响因子:
4.8
作者:
Boehm, Reinhard;Jones, Philip D.;Maugeri, Maurizio
通讯作者:
Maugeri, Maurizio
DOI:
10.1002/joc.5488
发表时间:
2018-06
期刊:
International Journal of Climatology
影响因子:
--
作者:
B. Chimani;V. Venema;A. Lexer;Konrad Andre;I. Auer;J. Nemec
通讯作者:
B. Chimani;V. Venema;A. Lexer;Konrad Andre;I. Auer;J. Nemec
DOI:
10.5194/ascmo-4-1-2018
发表时间:
2018
期刊:
影响因子:
--
作者:
Lindau;Victor Venema
通讯作者:
Victor Venema
DOI:
10.1002/joc.5728
发表时间:
2018
期刊:
International Journal of Climatology
影响因子:
--
作者:
Lindau;V. Venema
通讯作者:
V. Venema