Analysis and mapping of the HDD, CDD and temperatures for southern Caspian Sea (CS) Based Model EH5OM

Document Type: Case Study

Authors

1 Faculty of Geography and Urban palnning, Islamic Azad university, Centre Tehran branch, Tehran, Iran

2 Department of Geography, University of Yazd, Yazd, Iran

3 Department of Physical Geography-Climatology, University of Yazd, Yazd, Iran

Abstract

 In this paper the impact of climate change on southern Caspian Sea (CS) building energy demand was investigated by means of the degree-days method. Estimate heating degree-days (HDD) and cooling degree-days (CDD) from annual and seasonal simulated temperature data are required. To this end, data were received from EH5OM, the website of the Abdus Salam International Theoretical Physics Center (Italy). These data were run from 2015 to 2050 under A1 B scenario by the Intergovernmental Panel on Climate Change. For downscaling purposes, the fourth version of RegCM4 was used Heating and cooling degree-day with 18.3°C and 23.9°C temperature thresholds were calculated and then sum of annual and seasonal means of degree- day were obtained. The Results show that, at the northwestern corner of the Golestan province parts, the maximum temperature is observed; while in the southern parts of the Gilan and Mazandaran province minimum is recorded. Also a strong inverse relationship between temperature and elevation is observed. The lowest Annual energy consumption for Cooling would take place in the south Gilan province and so west and south Mazandaran province; while the highest energy consumption would be observed in the regions have low elevation, such as the northeastern Golestan province. The CDD values are negatively related to elevation and positively related to longitude and latitude.

Keywords


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