Uncertainty in hottest years ranking: analysis of Tibetan Plateau surface air temperature

Changes in surface air temperature can directly affect hydrology, agriculture, and ecosystems through extreme climate events such as heat waves. For this reason, and to improve climate change adaptation strategies, it is important to investigate the ranking of hottest years. In this study, the Wilco...

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Main Authors: Wei HUA, Kai-Qin YANG, Guang-Zhou FAN
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2017-07-01
Series:Atmospheric and Oceanic Science Letters
Subjects:
Online Access:http://dx.doi.org/10.1080/16742834.2017.1330646
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author Wei HUA
Kai-Qin YANG
Guang-Zhou FAN
author_facet Wei HUA
Kai-Qin YANG
Guang-Zhou FAN
author_sort Wei HUA
collection DOAJ
description Changes in surface air temperature can directly affect hydrology, agriculture, and ecosystems through extreme climate events such as heat waves. For this reason, and to improve climate change adaptation strategies, it is important to investigate the ranking of hottest years. In this study, the Wilcoxon signed-rank test and Monte Carlo simulation are used to estimate the ranking of the hottest years for the Tibetan Plateau (TP) in recent decades, and the uncertainty in the ranking. The Wilcoxon signed-rank test shows that the top 10 hottest years on record over the TP mainly occur after 1998. The top three hottest years are ranked as 2006, 2009, and 2010, but there is almost no significant difference between them. When both sampling and observational errors are considered, only five years have a non-zero probability of being the hottest year, with the three highest probabilities being for the years 2006 (~47.231%), 2009 (~40.390%), and 2010 (~12.376%). Similarly, with respect to a given year that is among the 10 hottest years, our results show that all the years among the ranks of 1–10 resulting from the Wilcoxon signed-rank test have probabilities above 10%, while the years 2001 and 2012 have probabilities of 3% and 4%.
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spelling doaj.art-c9eb4cd282344db9a44318b7ab24b0dc2022-12-21T23:35:30ZengKeAi Communications Co., Ltd.Atmospheric and Oceanic Science Letters1674-28342376-61232017-07-0110433734110.1080/16742834.2017.13306461330646Uncertainty in hottest years ranking: analysis of Tibetan Plateau surface air temperatureWei HUA0Kai-Qin YANG1Guang-Zhou FAN2Chengdu University of Information TechnologyChengdu University of Information TechnologyChengdu University of Information TechnologyChanges in surface air temperature can directly affect hydrology, agriculture, and ecosystems through extreme climate events such as heat waves. For this reason, and to improve climate change adaptation strategies, it is important to investigate the ranking of hottest years. In this study, the Wilcoxon signed-rank test and Monte Carlo simulation are used to estimate the ranking of the hottest years for the Tibetan Plateau (TP) in recent decades, and the uncertainty in the ranking. The Wilcoxon signed-rank test shows that the top 10 hottest years on record over the TP mainly occur after 1998. The top three hottest years are ranked as 2006, 2009, and 2010, but there is almost no significant difference between them. When both sampling and observational errors are considered, only five years have a non-zero probability of being the hottest year, with the three highest probabilities being for the years 2006 (~47.231%), 2009 (~40.390%), and 2010 (~12.376%). Similarly, with respect to a given year that is among the 10 hottest years, our results show that all the years among the ranks of 1–10 resulting from the Wilcoxon signed-rank test have probabilities above 10%, while the years 2001 and 2012 have probabilities of 3% and 4%.http://dx.doi.org/10.1080/16742834.2017.1330646Hottest yearsuncertaintyrankingTibetan Plateau
spellingShingle Wei HUA
Kai-Qin YANG
Guang-Zhou FAN
Uncertainty in hottest years ranking: analysis of Tibetan Plateau surface air temperature
Atmospheric and Oceanic Science Letters
Hottest years
uncertainty
ranking
Tibetan Plateau
title Uncertainty in hottest years ranking: analysis of Tibetan Plateau surface air temperature
title_full Uncertainty in hottest years ranking: analysis of Tibetan Plateau surface air temperature
title_fullStr Uncertainty in hottest years ranking: analysis of Tibetan Plateau surface air temperature
title_full_unstemmed Uncertainty in hottest years ranking: analysis of Tibetan Plateau surface air temperature
title_short Uncertainty in hottest years ranking: analysis of Tibetan Plateau surface air temperature
title_sort uncertainty in hottest years ranking analysis of tibetan plateau surface air temperature
topic Hottest years
uncertainty
ranking
Tibetan Plateau
url http://dx.doi.org/10.1080/16742834.2017.1330646
work_keys_str_mv AT weihua uncertaintyinhottestyearsrankinganalysisoftibetanplateausurfaceairtemperature
AT kaiqinyang uncertaintyinhottestyearsrankinganalysisoftibetanplateausurfaceairtemperature
AT guangzhoufan uncertaintyinhottestyearsrankinganalysisoftibetanplateausurfaceairtemperature