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Investigating the changes in cooling degree day requirements under climate change conditions in Southern Khorasan Province, Iran

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Abstract

Climate change is expected to influence the cooling energy demand of residential buildings and affect overall thermal comfort. Cooling degree day (CDD) requirements are among the most important human issues in the fields of agriculture, tourism, and energy management in the present and future. Knowing the extent of these changes can be very effective in managers’ decision-making. The present study aims to investigate changes in cooling requirements under climate change conditions in South Khorasan Province. To this end, daily maximum and minimum temperature data of 11 synoptic stations in South Khorasan Province were obtained from the Iran Meteorological Organization (IRIMO) during the period 1994–2019. The available scenarios of the fifth report of the Climate Change Intergroup (AR5 2014) include RCP scenarios from the Canadian Climate Change Web site, and the data for the upcoming period (2020–2046) in the study area was downscaled using the SDSM software. The monthly and annual cooling requirements of the sites were calculated in the observation and upcoming period via MATLAB software for warm months (May–September). The temperature threshed of 23 degrees centigrade was applied for the calculation of CDD requirements. Finally, using the Kriging interpolation method, the zoning maps of cooling requirements for present and upcoming periods were drawn via ArcGIS software. Investigating the effect of geographical coordinates (latitudes, longitudes, and elevations of stations) on cooling requirements in the region, it was determined that the role of elevation is very effective on the spatial variation of cooling requirements. In warm months, low-lying areas (Khur, Boshruyeh, and Tabas) require higher energy levels due to the need for more cooling. The increase in the temperature and warm weather in spring, especially in May and June in most places, requires further use of cooling systems in the future.

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Authors and Affiliations

  1. Department of Climatology, Hakim Sabzevari University, Sabzevar, Iran

    Abdolreza Kashki, Mokhtar Karami & Hossein Imanipour

Authors
  1. Abdolreza Kashki
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  2. Mokhtar Karami
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  3. Hossein Imanipour
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Contributions

All authors contributed to the study’s conception and design. Material preparation, data collection, and analysis were performed by Abdolreza Kashki, Mokhtar Karami, and Hossein Imanipour. Hossein Imanipour wrote the first draft of the manuscript, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Abdolreza Kashki.

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The authors declare no competing interests.

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Responsible Editor: Zhihua Zhang

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Kashki, A., Karami, M. & Imanipour, H. Investigating the changes in cooling degree day requirements under climate change conditions in Southern Khorasan Province, Iran. Arab J Geosci 15, 649 (2022). https://doi.org/10.1007/s12517-022-09754-4

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  • DOI: https://doi.org/10.1007/s12517-022-09754-4

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