Scientific- Research Quarterly of Geographical Data (SEPEHR)

Comparative Analysis of Iran’s Average Monthly Heating and Cooling Degree Days during the Past and Future Periods

Kamal Omidvar; Reza Ebrahimi; Ahmad Mazidi; Teymur Alizadeh

Volume 26, Issue 104 , March 2018, , Pages 197-209

https://doi.org/10.22131/sepehr.2018.30535

Abstract

Abstract[1] Increasing demand for energy against the reduction of comprehensive energy resources along with the consequences of global warming, make the importance of a quantitative review of changes in the need for cooling, heating of the country in the past and in the future decades essential. First, ... Read More Abstract[1] Increasing demand for energy against the reduction of comprehensive energy resources along with the consequences of global warming, make the importance of a quantitative review of changes in the need for cooling, heating of the country in the past and in the future decades essential. First, the overall atmospheric circulation data was extracted from the EH5OM database. These data were under the A1B scenario of the International Climate Change Board and were downscaled with regional climate model data of average daily temperature of 0.27 x 0.27 degree, which covers approximately 30 x30 kilometer dimensions of Iran in the time interval of (2015-2050). The average daily temperature data of the past period were extracted from the ISFZARI databases during the statistical period of (1970-1970) on cells measuring 15 x 15 km. throughout the country. The temperature threshold of 11 degrees was used to calculate the heating degree day and the threshold of 18.3 to calculate the cooling degree day. The monthly average of these parameters was obtained on a matrix of 12 × 2140 (future) and 7187 * 12 (past), in which the rows represent the time (month of the year) and the columns represent the locations of the cells. Then the monthly average map of both periods was drawn and interpreted. The results indicate that the cooling of the air in the coming decades compared to the previous period in January and December in most parts of the country except for the coastal areas and the hinterlands, and the warming of the air in most parts of the country in the warm months of the year (June, July, August) will have significant effects on the amount of energy used for heating and cooling. [1] - به دلیل کیفیت نامناسب ترجمه (چکیده مبسوط انگلیسیِ دریافتی) نشریه، به ناچار اقدام به ترجمه مجدد متن مختصر چکیده فارسی و انتشار آن به جای چکیده مبسوط انگلیسی نموده است.

How Urban Structure Can Affect City Sustainability in Terms of Air Quality (Translation)

Kamal Omidvar; Maryam Beiranvandzadeh

Volume 18, Issue 71 , November 2009, , Pages 72-76

Abstract

Despite the progress made in controlling air pollution in special places, urban areas are witnessing increasing environmental concerns for air pollution. Air quality is one of the major concerns in this area. The results of several studies in this regard indicate that the shape of the city and land use ... Read More

Summer Plans of Fertilizing Clouds in Central America with the Aim of Increasing Hydropower Production

Kamal Omidvar

Volume 13, Issue 51 , November 2004, , Pages 30-31

Abstract

North American meteorological advisors implemented the summer plan of cloud insemination in the countries of Guatemala and Honduras. The two countries, as their neighbors in Central America, provide the bulk of their electrical energy from hydroelectric power facilities. The Chixoy dams in Guatemala ... Read More

Theoretical Bases of Clouds Insemination

Kamal Omidvar

Volume 12, Issue 47 , November 2003, , Pages 24-28

Abstract

The purpose of this research was to introduce the theoretical foundations of fertilizing the clouds. First, the importance of the fertility issue is presented and then the origin of Cloud Condensation Nuclei (CCN), natural Ice Nuclei (IN), types of fertility, mechanisms of growth of cloud droplets and ... Read More

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Author = Kamal Omidvar

Comparative Analysis of Iran’s Average Monthly Heating and Cooling Degree Days during the Past and Future Periods

Abstract

How Urban Structure Can Affect City Sustainability in Terms of Air Quality (Translation)

Abstract

Summer Plans of Fertilizing Clouds in Central America with the Aim of Increasing Hydropower Production

Abstract

Theoretical Bases of Clouds Insemination

Abstract