ECOPERSIA
ECOPERSIA
ECOPERSIA
Basic Sciences
http://ecopersia.modares.ac.ir
1
admin
2322-2700
2538-2152
10.22034/ecopersia
en
jalali
1393
9
1
gregorian
2014
12
1
2
4
online
1
fulltext
en
Spatial and Temporal Trend Analysis of Temperature and Precipitation in Iran
<span style="font-size: 10pt; font-family: 'Times New Roman','serif'; color: black; line-height: 115%; mso-fareast-font-family: Calibri; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">Analysis of the spatial and temporal trends of precipitation and temperature are pertinent for future development and sustainable management of water resources in a given region. In this paper, we present a study concerning the climatic behavior of two principal observables Variables, viz. monthly temperature (maximum and minimum) and mean precipitations obtained from the measurements carried out in 60 Iranian meteorological stations for 40 years from 1969 to 2008. The Mann-Kendall test was used to detect the significant trends.Results showed that during summer and autumn, the precipitation had a negative trend (at 5% significant level) in the south-eastern parts of Iran and this trend is less during spring, but no special trend was observed in winter. The minimum and the maximum temperatures did not have any particular trend in winter. Spring was accompanied by an increase in positive trend in the maximum temperatures in the south-west and north-east, while the minimum temperature only limited in the south-west parts. Positive and negative trends of the minimum temperature were very dispersed during the summer. The maximum temperatures had a negative trend in the north-west and no positive trend was observed at 5% significant level. During autumn, the temperatures indices had positive and negative trends with a wide range of dispersion.</span>
Climate Change,Climatic variables,Iran,Mann-Kendall,Spatial distribution
727
742
http://ecopersia.modares.ac.ir/browse.php?a_code=A-24-1000-4621&slc_lang=en&sid=24
Vahid
Feizi
Vahid
Feizi
100319475328460057590
100319475328460057590
Yes
PhD Candidate in Geography, Climatology, Tehran University, Iran
PhD Candidate in Geography, Climatology, Tehran University, Iran
Maryam
Mollashahi
Maryam
Mollashahi
100319475328460057589
100319475328460057589
No
Assistant Professor of Forestry in Arid Regions, Faculty of Desert Study, Semnan University, Iran
Assistant Professor of Forestry in Arid Regions, Faculty of Desert Study, Semnan University, Iran
Manochehr
Farajzadeh
Manochehr
Farajzadeh
100319475328460057588
100319475328460057588
No
Associate Professor in Geography, Climatology, Tarbiat Modarres University, Iran
Associate Professor in Geography, Climatology, Tarbiat Modarres University, Iran
Ghasem
Azizi
Ghasem
Azizi
100319475328460057307
100319475328460057307
No
Associate Professor in Geography, Climatology, Tehran University, Iran
Associate Professor in Geography, Climatology, Tehran University, Iran