Impacts of Global Warming on Extreme Temperatures in west of Iran

Document Type : Original Article

Authors

1 Faculty of Geographical Sciences, Kharazmi University, Tehran, Iran.

2 Faculty of Geographical Sciences, Kharazmi University

Abstract

Studying global warming and assessing its impacts is very important due to economic and social consequences and financial losses. Changes in extreme temperatures can cause enhancement of demands for energy, increase mortality, reduce biodiversity and damage to crops, which makes it essential to be studied.
The aim of this study is predicting the changes of extreme temperatures in west of Iran during 2015-2045 period under climate change conditions according to the RCP emission scenarios. To this purpose, the SDSM model under the RCP 8.5 scenario is used for statistical downscaling and data generation of future period, using the GCM models of the CanESM2 and Mann-Kendall nonparametric test is used to analyze trends.
From 27 extreme indices of climate change which are defined by ETCCDI , 6 indices of extreme temperatures were selected including diurnal temperature range (DTR), warm and cold days, warm and cold nights, and number of summer days.
The results showed that in the predicting period (2015-2045), except Shahr-e-Kord station, the DTR index has a decreasing trend. There was an increasing trend in number of summer days index in all stations, except Hamedan station. In cold night index a decreasing trend is observed in all stations except Shahr-e-Kord station. A significant decreasing trend is observed in number of cold days index in all stations except Sahr-e-Kord. In warm days index, a significant increasing trend is observed in all station. Generally it was found that the significant trend of cold extreme and warm extreme temperatures were decreasing and increasing respectively. Also in most of the studied indices the rate of changes were associated with latitude of the weather station.

Keywords

References

Abbasi F, Babaiyan I, Malbousi SH, Asmari M,  Golmokhtari L (2012) Assessment of climate change in Iran in the future decades findings (2025 to 2100) using data from the downscaling of general circulation models. Journal of Geophysical Research. 27(1):104.
Alijani B, Mahmoudi P Saligheh, M, Rigichahi A (2011) Study changes and records annual minimum temperature in Iran. Journal of Geophysical Research. 8:101–122.
Alijani B, Roshan A, Parak F, Heidari R (2012) Trend extreme variability of temperature using indicators of climate change in Iran. Journal of Geography and Environmental Hazards. 1(2):17–23.
Asadi A, Masoudian S (2014) Temporal-Spatial Distribution of extreme temperatures warm in Iran.  Journal of Environmental Research. 5(9):59–72.
Azizi Gh, Roshani M (2008) The study of climate change on the southern shores of the Caspian Sea Mann-Kendall method. Journal of Geophysical Research. 64:13–28.
Brown BG,  Katz RW (1995) Regional Analysis of Temperature Extremes: Spatial Analog for Climate Change? National Center for Atmospheric Research, Boulder, Colorado, Journal of Climate. 8(1):108–119.
Chamchati H, Bahir M (2011) Contribution of climate change on water resources in semi-arid areas: Example of the Essaouita Basin (Morocco). The American Journal of Scientific and Industrial Research. 2(2):209–215.
Charron I (2014) A Guidebook on Climate Scenarios: Using Climate Information to Guide Adaptation Research and Decisions. Ouranos, 86 pp.
Chung, YS, Yoon MB (2000) Interpretation of recent temperature and precipitation trends observed in Korea. Theoretical and Applied Climatology. 67:171–180
Dashtebozorgi A, Alijani B, Jafarpour Z, Skakiba A (2015) Indicators simulate extreme temperature Khuzestan province based on RCP scenarios. Journal of Geography and environmental hazards. 11:105–123.
Elagib N, Ahmad AA,  Anwar S (2009) Development of temperatures in the Kingdom of Bahrain from 1947 to 2005. Theoretical and Applied Climatology. 40:269–279.
Furió D, Meneu V (2011) Analysis of extreme temperatures for four sites across Peninsular Spain. Theoretical and Applied Climatology. 104(1-2):83–99.
Horton EB, Folland CK, Parker DE (2001) The Changing Incidence of Extremes in Worldwide and Central England Temperatures to the End of the Twentieth Century. Climatic Change. Kluwer Academic Publishers 18:267–295.
IPCC 2007. Climate Change 2007. The physical science basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, 1009 pp.
IPCC 2014: Climate Change 2014: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Stocker, TF, Qin D, Plattner G-K, Tignor M, Allen SK, Boschung J, Nauels A, Xia Y, Bex V, Midgley PM (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA:1535 pp, doi:10.1017/CBO9781107415324
Jones PD, Moberg A (2003) Hemispheric and large-scale surface air temperature variations: An extensive revision and an update to 2001. Journal of Climate. 16:206–223.
Kharin VV, Zwiers F W, Zhang X, Wehner M (2013) Changes in temperature and precipitation extremes in the CMIP5 ensemble. Climatic Change. 119(2):345–357.
Kunkel KE (2003) North American trends in extreme precipitation. Natural Hazards. 29: 291–305.
Lashkari h, Keykhosravi GH (2010) Synoptic analysis of cold wave 8 to 15 December 2006. Journal of Humanities Teacher. 1:152–177.
Lehner BD, Oll P, Alcamo J, Henrichs T, Kaspar F (2006) Estimating the impact of global change on flood and drought risks in Europe: A Continental, Integrated Analysis. Climatic Change. 75:273–299
Marengo JA., Chou SC, Torres RR, Giarolla A, Alves LM, Lyra A (2014) Climate change in central and South America: Recent trends, future projections, and impacts on regional agriculture. Working Paper No 73.
Mearns LO, Schneider K, Schneider S (1984) Extreme high-temperature events: Changes in their probabilities with changes in mean temperature, American Meteorology Society. 23:1603.
Mohammadi H, Taghavi F (2004) Trend extreme temperature and precipitation indices in Tehran. Journal of Geophysical Research. 35:151–172.
Muhire I, Ahmed F (2016) Spatiotemporal trends in mean temperatures and aridity index over Rwanda. Theoretical and Applied Climatology. 123(1-2):399–414.
Omidvar K, Khosravi Y (2011) Study of some climatic elements on the northern coast of the Persian Gulf by using Kendall test. Journal of Geography and Environmental Planning. 8:33–46.
Omidvar K, Salari H (2013) Study of heat and precipitation trends in the West and North West of Iran using parametric and non-parametric. Journal of Geography. 9:271–288.
Rahimzadeh F, Fatahi E, Mohammadian N, Taghipour A (2010) Trend indices of climate extremes of temperature during the period 2003-1951. Journal of Geophysical Research. 93:119–144.
Rahimzadeh F, Hedayatdezzfooli A, Pourashgareiyan A (2011) Assess trends and extreme temperature and precipitation indices mutation in Hormozgan province. Journal of Geography and Development. 21:97–113.
Rasouli A (2000) Preliminary analysis of time series of temperature Tabriz city. Journal of Nivar. 45: 46.7–26.
Revadekar JV, Kulkarni A (2008) The El Nino-southern oscillation and winter precipitation extremes over India. International Journal of Climatology. 28:1445–1452.
Ryoo S, Kown W, Jhun J (2004) Characteristics of wintertime daily mminimum and extreme  temperature over South Korea. International Journal of Climatology. 24:145–160
Shirmohammadi Z, Khani A, Ansari H, Alizzzadeh A, Mohammadian A (2012) The relationship between ENSO phenomenon with the extreme values of seasonal precipitation in the provinces of Khorasan. Journal of Soil and water conservation. 1(19):61–79.
Shouquan Cheng CH, Cambel M, Li Q, Li GH, Day N, Pengelly D, Gingrich S, Kalaassen J, Maclver D, Comer N, Mao Y, Thompson W, Lin H (2008) Differential and combined impacts of extreme temperatures and air pollution on human mortality in south–central Canada. Part II: future estimates. Air Quality, Atmosphere, and Health. 1:223–235
Askari A, Rahimzadeh F, Mohammadian N, Fatahi E (2012) Analysis trend extreme precipitation indices in Iran. Journal of Iran. Water Resources Research. 3:42–55.
Tatsumi K, Oizumi T, Yamashiki Y (2013) Introduction of daily minimum and maximum temperature change signals in the Shikoku region using the statistical downscaling method by GCMs. Hydrological Research Letters. 7(3):48–53.
Taylor KE, Stouffer RJ, Meehl GA (2012) An overview of CMIP5 and the experiment design. Bulletin of the American Meteorological Society. 93(4):485–498.
Tzanakou M, Deligiorgi D (2006). Trends of the daily maximum temperature in relation with the climatic change and the urbanization in the Athens Basin. Global NEST Journal. 8:186–194.
Wilby RL, Wigley TML (1997) Downscaling general circulation model output: a review of methods and limitations. Journal of Progress in Physical Geography: Earth and Environment. 21(4):530-548.
Wilby RL, Tomlinson OJ, Dawson CW (2007) Multi-site simulation of precipitation by condition resampling. Journal of Climate Research. 23:183–194.
Zhang X, Aguilar E, Sensoy S, Melkonyan H, Tagiyeva U, Ahmed N (2005) Trends in the Middle East climate extreme indices from 1950 to 2003. Journal of Geophysical Research. 110(D22104).
 
 
Climate Change Research
Volume 1, Issue 4 - Serial Number 4
December 2020
Pages 11-19

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