Investigation of Wet-Bulb Temperature Variation view point of statistical

Document Type : Original Article

Authors

1 Associate Prof.,Azad University

2 Head of education, planning and content production department

3 Associate Prof. of Atmospheric Science and Meteorological Research (ASMERC), Tehran

Abstract

Statistical study of the trend of wet temperature changes in Central Iran

َAbstract

In this study, the temperature data of central Iran stations in different months and hot, cold and passing seasons were investigated from a statistical point of view. The results showed that the presence of an upward trend in the cold season in eleven stations was confirmed and rejected in two stations. The highest slope of trend line in this season is estimated in Qom, Daran, Arak and Natanz stations with values of +0.53 and +0.52 degrees per 10 years. The lowest amount in this season was allocated to Isfahan station with a value of +0.17 degrees per ten years.

In the passing season, the existence of an upward trend in one station has been confirmed and rejected in 11 stations. The highest slope of trend line in this season was estimated in Qom station with values of +0.40 degrees per 10 years. In the warm season, except in Yazd, Isfahan, Garmsar, Bafgh, Robat posht badam, Kashan, Khor va byabank, Naeen, Shahreza, Ardestan, Golpaygan and Kabotar abad stations, which is the slope of the descending line, in the rest of the stations, the uptrend has been confirmed. An upward trend in Shahrod, Ghom, Natanz and Daran stations has been confirmed and rejected in Arak and Semnan stations that the highest slope of trend line belongs to Dararn and Gom stations with values of +0.30 and +0.27 degrees per ten years.

It seems that the existence of confirmed upward trend in the warm and transit seasons caused by climate change and the disturbance of environmental conditions governing the stations, causes in the decades ahead in the residential areas of Qom, Daran, Shahroud and Natanz, the conditions of life comfort to be out of balance and its residents in the use of conventional cooling ventilation such as water coolers to use Cooling ventilation such as gas chlorine, which imposes a high cost on households for energy consumption, should be turned on.

Key words: Wet-Bulb Temperature, Trend, Central of Iran, Man-Kendal



Abstract

In this study, the temperature data of central Iran stations in different months and hot, cold and passing seasons were investigated from a statistical point of view. The results showed that the presence of an upward trend in the cold season in eleven stations was confirmed and rejected in two stations. The highest slope of trend line in this season is estimated in Qom, Daran, Arak and Natanz stations with values of +0.53 and +0.52 degrees per 10 years. The lowest amount in this season was allocated to Isfahan station with a value of +0.17 degrees per ten years.

In the passing season, the existence of an upward trend in one station has been confirmed and rejected in 11 stations. The highest slope of trend line in this season was estimated in Qom station with values of +0.40 degrees per 10 years. In the warm season, except in Yazd, Isfahan, Garmsar, Bafgh, Robat posht badam, Kashan, Khor va byabank, Naeen, Shahreza, Ardestan, Golpaygan and Kabotar abad stations, which is the slope of the descending line, in the rest of the stations, the uptrend has been confirmed. An upward trend in Shahrod, Ghom, Natanz and Daran stations has been confirmed and rejected in Arak and Semnan stations that the highest slope of trend line belongs to Dararn and Gom stations with values of +0.30 and +0.27 degrees per ten years.

It seems that the existence of confirmed upward trend in the warm and transit seasons caused by climate change and the disturbance of environmental conditions governing the stations, causes in the decades ahead in the residential areas of Qom, Daran, Shahroud and Natanz, the conditions of life comfort to be out of balance and its residents in the use of conventional cooling ventilation such as water coolers to use Cooling ventilation such as gas chlorine, which imposes a high cost on households for energy consumption, should be turned on.

Key words: Wet-Bulb Temperature, Trend, Central of Iran, Man-Kendal

Abstract

In this study, the temperature data of central Iran stations in different months and hot, cold and passing seasons were investigated from a statistical point of view. The results showed that the presence of an upward trend in the cold season in eleven stations was confirmed and rejected in two stations. The highest slope of trend line in this season is estimated in Qom, Daran, Arak and Natanz stations with values of +0.53 and +0.52 degrees per 10 years. The lowest amount in this season was allocated to Isfahan station with a value of +0.17 degrees per ten years.

In the passing season, the existence of an upward trend in one station has been confirmed and rejected in 11 stations. The highest slope of trend line in this season was estimated in Qom station with values of +0.40 degrees per 10 years. In the warm season, except in Yazd, Isfahan, Garmsar, Bafgh, Robat posht badam, Kashan, Khor va byabank, Naeen, Shahreza, Ardestan, Golpaygan and Kabotar abad stations, which is the slope of the descending line, in the rest of the stations, the uptrend has been confirmed. An upward trend in Shahrod, Ghom, Natanz and Daran stations has been confirmed and rejected in Arak and Semnan stations that the highest slope of trend line belongs to Dararn and Gom stations with values of +0.30 and +0.27 degrees per ten years.

It seems that the existence of confirmed upward trend in the warm and transit seasons caused by climate change and the disturbance of environmental conditions governing the stations, causes in the decades ahead in the residential areas of Qom, Daran, Shahroud and Natanz, the conditions of life comfort to be out of balance and its residents in the use of conventional cooling ventilation such as water coolers to use Cooling ventilation such as gas chlorine, which imposes a high cost on households for energy consumption, should be turned on.

Key words: Wet-Bulb Temperature, Trend, Central of Iran, Man-Kendal

Keywords

References

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Im. E. S., Pal. J. S., Eltahir. E. A., 2017. Deadly heat waves projected in the densely populated. Agricultural regions of South Asia.

Journal of Climate Research
Volume 1401, Issue 50 - Serial Number 50
Vol. 13, No. 50, Summer 2022
September 2022
Pages 95-106

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