Cited by 32Climate variability and modelsClimate Change and Environmental ImpactMeteorological Phenomena and Simulations

Detection and attribution of changes in extreme temperatures at regional scale

Wang, Zhuo, Jiang, Yujing, Wan, Hui, Yan, Jun, Zhang, Xuebin·2017·Journal of Climate

Abstract

This paper improves an extreme-value-theory-based detection and attribution method and then applies it to four types of extreme temperatures, annual minimum daily minimum (TNn) and maximum (TXn) and annual maximum daily minimum (TNx) and maximum (TXx), using the HadEX2 observation and the CMIP5 multimodel simulation datasets of the period 1951–2010 at 17 subcontinent regions. The methodology is an analog of the fingerprinting method adapted to extremes using the generalized extreme value (GEV) distribution. The signals are estimated as the time-dependent location parameters of GEV distributions fitted to extremes simulated by multimodel ensembles under anthropogenic (ANT), natural (NAT), or combined anthropogenic and natural (ALL) external forcings. The observed extremes are modeled by GEV distributions whose location parameters incorporate the signals as covariates. A coordinate descent algorithm improves both computational efficiency and accuracy in comparison to the existing method, facilitating detection of multiple signals simultaneously. An overall goodness-of-fit test was performed at the regional level. The ANT signal was separated from the NAT signal in four to six regions. In these analyses, the waiting times of the 1951–55 20-yr return level in the 2006–10 climate for the temperature of the coldest night and day were found to have increased to over 20 yr; the corresponding waiting times for the warmest night and day were found to have dropped below 20 yr in a majority of the regions.

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Crossref · 10.1175/jcli-d-15-0835.1

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Authors
Wang, Z., Jiang, Y., Wan, H., Yan, J., & Zhang, X.
Affiliations
  • Shenzhen University (CN)
  • University of Connecticut (US)
  • Environment and Climate Change Canada (CA)
Corresponding author
Yan, Jun
Venue
Journal of Climate
Published
2017-09
Volume
30
Issue
17
Pages
7035-7047
ISSN
  • 0894-8755 (ISSN-L)
  • 1520-0442
OpenAlex
W2615635051
Cited by
32
References
39
Citations by year
2025: 2 · 2024: 4 · 2023: 7 · 2022: 3 · 2021: 9 · 2020: 2 · 2019: 3 · 2018: 2
FWCI
1.33
Type
journal article
Language
en
Open access
closed
Locations
Journal of Climate (publishedVersion)
Funders
  • Shenzhen University (17QNFC61)
  • Directorate for Mathematical and Physical Sciences (1521730)
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate Change and Environmental Impact
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Meteorological Phenomena and Simulations
Keywords
generalized extreme value distribution, anthropogenic forcing, natural climate variability, return levels, daily maximum and minimum temperature, coordinate descent, regional climate change

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