干旱区生态环境知识资源中心(Arid): Spatiotemporal changes in precipitation indicators related to bioclimate in Iran

Arid

DOI	10.1007/s00704-020-03192-6
	Spatiotemporal changes in precipitation indicators related to bioclimate in Iran
	Pour, Sahar Hadi 1,2; Wahab, Ahmad Khairi Abd 1,2; Shahid, Shamsuddin 1,2,3
通讯作者	Pour, Sahar Hadi
来源期刊	THEORETICAL AND APPLIED CLIMATOLOGY
ISSN	0177-798X
EISSN	1434-4483
出版年	2020
卷号	141 期号:1-2 页码:99-115
英文摘要	Although a significant number of studies have evaluated the trends in different characteristics of precipitation in Iran, the trends in precipitation indicators related to bioclimate are still not explored. The 0.5 degrees spatial resolution gauge-based gridded monthly precipitation data of global precipitation climatology centre (GPCC) for the period 1901-2016 was used in this study for the evaluation of the geographical distribution of the trends of bioclimatic precipitation indicators of Iran. The trends in the indicators due to global warming were estimated using modified Mann-Kendall (MMK) trend test which can estimate unidirectional trend by separating the natural variability in climate. Obtained results were compared with that found using classical Mann-Kendall (MK) test. Besides, gridded temperature data of climate research unit (CRU) was used to identify the warm/cold periods at each grid point to assess the trends in precipitation during warm/cold periods, considering a wide spatial variation in the onset time of different seasons in Iran. The results revealed that many of the trends in some of the precipitation indicators obtained in earlier studies were due to natural fluctuation of climate. Annual precipitation in Iran was found decreasing only in the northwest semi-arid region at a rate of - 12.1 to - 14.05 mm/decade, while the precipitation in the wettest month was found increasing in a large area in the southwest semi-arid region at a rate of 3.1 to 5.3 mm/decade. The most significant changes were observed in precipitation seasonality, which was found to increase in 22.4% area, mostly in the central dry and northeast semi-dry regions and decrease in 11.3% area, mostly in the northern wetter region. The study indicates that the long-term natural variability in large-scale atmospheric phenomena that influences the precipitation of Iran may be the cause of many significant changes observed in precipitation in previous studies.
英文关键词	Precipitation indicators Natural variability of climate Modified Mann-Kendall test Unidirectional trend Gridded climate data
类型	Article
语种	英语
国家	Malaysia
收录类别	SCI-E
WOS记录号	WOS:000522856100001
WOS关键词	KENDALL TREND TEST ; CLIMATE-CHANGE ; MANN-KENDALL ; SPATIAL-PATTERNS ; TEMPORAL TRENDS ; TEMPERATURE ; VARIABILITY ; PRODUCTS ; RAINFALL ; PROVINCE
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315670
作者单位	1.Univ Teknol Malaysia UTM, Fac Engn, Sch Civil Engn, Johor Baharu 81310, Malaysia; 2.Univ Teknol Malaysia UTM, Ctr Coastal & Ocean Engn COEI, Kuala Lumpur 54100, Malaysia; 3.Univ Malaysia Terengganu, Inst Oceanog & Environm INOS, Terengganu 21300, Terengganu, Malaysia
推荐引用方式 GB/T 7714	Pour, Sahar Hadi,Wahab, Ahmad Khairi Abd,Shahid, Shamsuddin. Spatiotemporal changes in precipitation indicators related to bioclimate in Iran[J],2020,141(1-2):99-115.
APA	Pour, Sahar Hadi,Wahab, Ahmad Khairi Abd,&Shahid, Shamsuddin.(2020).Spatiotemporal changes in precipitation indicators related to bioclimate in Iran.THEORETICAL AND APPLIED CLIMATOLOGY,141(1-2),99-115.
MLA	Pour, Sahar Hadi,et al."Spatiotemporal changes in precipitation indicators related to bioclimate in Iran".THEORETICAL AND APPLIED CLIMATOLOGY 141.1-2(2020):99-115.