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Application of Archimedean copulas in the analysis of the precipitation extremes: effects of precipitation changes

Due to the influence of changing environment and intensifying human activities, hydrometeorological changes are becoming common. This study derives a bivariate joint distribution of total precipitation and precipitation days with daily precipitation exceeding the 75th percentile and falling below th... Full description

Journal Title: Theoretical and Applied Climatology 2012, Vol.107(1), pp.255-264
Main Author: Zhang, Qiang
Other Authors: Li, Jianfeng , Singh, Vijay
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0177-798X ; E-ISSN: 1434-4483 ; DOI: 10.1007/s00704-011-0476-y
Link: http://dx.doi.org/10.1007/s00704-011-0476-y
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recordid: springer_jour10.1007/s00704-011-0476-y
title: Application of Archimedean copulas in the analysis of the precipitation extremes: effects of precipitation changes
format: Article
creator:
  • Zhang, Qiang
  • Li, Jianfeng
  • Singh, Vijay
subjects:
  • Water Cycle
  • Precipitation (Meteorology)
  • Human-environment Interactions
  • Biogeochemical Cycles
  • Water Resources
  • Precipitation Variability
ispartof: Theoretical and Applied Climatology, 2012, Vol.107(1), pp.255-264
description: Due to the influence of changing environment and intensifying human activities, hydrometeorological changes are becoming common. This study derives a bivariate joint distribution of total precipitation and precipitation days with daily precipitation exceeding the 75th percentile and falling below the 25th percentile. Chang points in the precipitation series are detected with more than one statistical method. Results indicate that (1) for P75 and D75, Kendal’s τ does not change significantly even when the existence of change points is taken into account. The selection of a copula is greatly impacted by the existence of a change point; (2) for P25 and D25, τ varies much, while the precipitation variations have no evident effects on the selection of a copula. Therefore, a copula should be selected after the detection of change points to avoid possible bias in results or conclusions. This study is of some merits in terms of risk evaluation based on copula-based probability analysis with available change points.
language: eng
source:
identifier: ISSN: 0177-798X ; E-ISSN: 1434-4483 ; DOI: 10.1007/s00704-011-0476-y
fulltext: fulltext
issn:
  • 1434-4483
  • 14344483
  • 0177-798X
  • 0177798X
url: Link


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descriptionDue to the influence of changing environment and intensifying human activities, hydrometeorological changes are becoming common. This study derives a bivariate joint distribution of total precipitation and precipitation days with daily precipitation exceeding the 75th percentile and falling below the 25th percentile. Chang points in the precipitation series are detected with more than one statistical method. Results indicate that (1) for P75 and D75, Kendal’s τ does not change significantly even when the existence of change points is taken into account. The selection of a copula is greatly impacted by the existence of a change point; (2) for P25 and D25, τ varies much, while the precipitation variations have no evident effects on the selection of a copula. Therefore, a copula should be selected after the detection of change points to avoid possible bias in results or conclusions. This study is of some merits in terms of risk evaluation based on copula-based probability analysis with available change points.
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titleApplication of Archimedean copulas in the analysis of the precipitation extremes: effects of precipitation changes
descriptionDue to the influence of changing environment and intensifying human activities, hydrometeorological changes are becoming common. This study derives a bivariate joint distribution of total precipitation and precipitation days with daily precipitation exceeding the 75th percentile and falling below the 25th percentile. Chang points in the precipitation series are detected with more than one statistical method. Results indicate that (1) for P75 and D75, Kendal’s τ does not change significantly even when the existence of change points is taken into account. The selection of a copula is greatly impacted by the existence of a change point; (2) for P25 and D25, τ varies much, while the precipitation variations have no evident effects on the selection of a copula. Therefore, a copula should be selected after the detection of change points to avoid possible bias in results or conclusions. This study is of some merits in terms of risk evaluation based on copula-based probability analysis with available change points.
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abstractDue to the influence of changing environment and intensifying human activities, hydrometeorological changes are becoming common. This study derives a bivariate joint distribution of total precipitation and precipitation days with daily precipitation exceeding the 75th percentile and falling below the 25th percentile. Chang points in the precipitation series are detected with more than one statistical method. Results indicate that (1) for P75 and D75, Kendal’s τ does not change significantly even when the existence of change points is taken into account. The selection of a copula is greatly impacted by the existence of a change point; (2) for P25 and D25, τ varies much, while the precipitation variations have no evident effects on the selection of a copula. Therefore, a copula should be selected after the detection of change points to avoid possible bias in results or conclusions. This study is of some merits in terms of risk evaluation based on copula-based probability analysis with available change points.
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