Trend analysis of climate change compound indices in Iran

The time-placement scheme of climate extreme changes is important. In this regard, a set of a compound indices derived using daily resolution climatic time series data is examined to assess climate change in Iran. The compound indices were examined for 47 synoptic meteorological stations during 1981...

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Autores principales:	Ahmad Roshani, Fatemeh Parak, Hossein Esmaili
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	climate change compound index iran mann–kendall test statistical trend Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/121153fc4dc84a02a17440da8d8eb642
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spelling	oai:doaj.org-article:121153fc4dc84a02a17440da8d8eb6422021-11-05T18:48:12ZTrend analysis of climate change compound indices in Iran2040-22442408-935410.2166/wcc.2020.213https://doaj.org/article/121153fc4dc84a02a17440da8d8eb6422021-05-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/3/801https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354The time-placement scheme of climate extreme changes is important. In this regard, a set of a compound indices derived using daily resolution climatic time series data is examined to assess climate change in Iran. The compound indices were examined for 47 synoptic meteorological stations during 1981–2015. The results show that most stations experienced a negative trend for the cool/dry (CD) and cool/wet (CW) index and a positive trend in CW was observed in some dispersed small areas. Both warm/dry (WD) and warm/wet (WW) indices have similar behavior, but the magnitude and spatial consistency of WW days were much less than WD days. The results show that more than 80% of stations experienced a decrease in the annual occurrence of the cold modes and an increase in the annual occurrence of the warm modes. On the other hand, universal thermal climate index (UTCI) change demonstrated a significant increase in the annual occurrence of strong heat stress (32–38 °C) and significant decrease in the annual occurrence of no thermal stress class (9–26 °C). Moreover, trends in tourism climate index (TCI), including TCI ≥ 60 and TCI ≥ 80, showed similar changes but with weak spatial coherence.Ahmad RoshaniFatemeh ParakHossein EsmailiIWA Publishingarticleclimate changecompound indexiranmann–kendall teststatistical trendEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 3, Pp 801-816 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	climate change compound index iran mann–kendall test statistical trend Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	climate change compound index iran mann–kendall test statistical trend Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Ahmad Roshani Fatemeh Parak Hossein Esmaili Trend analysis of climate change compound indices in Iran
description	The time-placement scheme of climate extreme changes is important. In this regard, a set of a compound indices derived using daily resolution climatic time series data is examined to assess climate change in Iran. The compound indices were examined for 47 synoptic meteorological stations during 1981–2015. The results show that most stations experienced a negative trend for the cool/dry (CD) and cool/wet (CW) index and a positive trend in CW was observed in some dispersed small areas. Both warm/dry (WD) and warm/wet (WW) indices have similar behavior, but the magnitude and spatial consistency of WW days were much less than WD days. The results show that more than 80% of stations experienced a decrease in the annual occurrence of the cold modes and an increase in the annual occurrence of the warm modes. On the other hand, universal thermal climate index (UTCI) change demonstrated a significant increase in the annual occurrence of strong heat stress (32–38 °C) and significant decrease in the annual occurrence of no thermal stress class (9–26 °C). Moreover, trends in tourism climate index (TCI), including TCI ≥ 60 and TCI ≥ 80, showed similar changes but with weak spatial coherence.
format	article
author	Ahmad Roshani Fatemeh Parak Hossein Esmaili
author_facet	Ahmad Roshani Fatemeh Parak Hossein Esmaili
author_sort	Ahmad Roshani
title	Trend analysis of climate change compound indices in Iran
title_short	Trend analysis of climate change compound indices in Iran
title_full	Trend analysis of climate change compound indices in Iran
title_fullStr	Trend analysis of climate change compound indices in Iran
title_full_unstemmed	Trend analysis of climate change compound indices in Iran
title_sort	trend analysis of climate change compound indices in iran
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/121153fc4dc84a02a17440da8d8eb642
work_keys_str_mv	AT ahmadroshani trendanalysisofclimatechangecompoundindicesiniran AT fatemehparak trendanalysisofclimatechangecompoundindicesiniran AT hosseinesmaili trendanalysisofclimatechangecompoundindicesiniran
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Trend analysis of climate change compound indices in Iran

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