A SYNOPTIC ANALYSIS OF SPATIAL AND TEMPORAL DISTRIBUTION OF HEAVY RAINFALLS IN RAZAVI AND NORTH KBORASAN PROVINCES

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AZIZI GHASEM; NABAVI SEYYED OMID; ABBASI ESMAEIL

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Journal: JOURNAL OF THE STUDIES OF HUMAN SETTLEMENTS PLANNING (JOURNAL OF GEOGRAPHICAL LANDSCAPE) Year:2010 | Volume:5 | Issue:12 Page(s): 71-89

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Title

A SYNOPTIC ANALYSIS OF SPATIAL AND TEMPORAL DISTRIBUTION OF HEAVY RAINFALLS IN RAZAVI AND NORTH KBORASAN PROVINCES

Author(s)

AZIZI GHASEM | NABAVI SEYYED OMID | ABBASI ESMAEIL | Issue Writer Certificate

Keywords

HEAVY RAINFALLSQ2

SYNOPTIC PATTERNSQ2

SPATIAL AND TEMPORAL DISTRIBUTION OF HEAVY RAINFALLSQ3

RAZAVI AND NORTH KHORASAN PROVINCESQ3

Abstract

The present study mainly aims at conducting synoptic analysis of climatecondition along with HEAVY RAINFALLS in RAZAVI AND NORTH KHORASAN PROVINCES and spatial and temporal distribution. The criterion for heavy rain in this study is rain over 20 millimeters. Parameters of sea level pressure and surface temperature are used to study the condition of earth while there is heavy rain. To find the source of wet, especial wetness and wind direction in 700 hectopascal have been used. Meanwhile, as a desirable level, level of 500 hetopascal has been studied in studying synoptic models. Direction and speed of wind in 300 hetopascal are also used to survey the role of wind process in creating heavy rains. Data have been collected day to day in a period of 11 years (1995-2005). Identification of three patterns of spatial and temporal distribution of heavy rain falls and recognition of simultaneous climate conditions are the results of the study that are 1. Cold period: the center of heavy rain in south of the region in question and its simultaneous synoptic pattern is high rise of Mediterranean Sea, and Red Sea is identified as the source of humidity of these rainfalls. A cyclone is also observed in land level. 2. Warm period the center of heavy rain in north of the region in question which has three SYNOPTIC PATTERNS of low eastern Caspian Sea, Bandali system in Northern Caspian Sea, and retard of pressure center next to Hare, Caspian Sea is identified as the source of humidity of these rainfalls. The presence of heavy was observed in land level. 3. Passing Period: the focus of heavy rain in the center of the region in question which combines the two former climate conditions. Meanwhile the presence of river wind plays important role in making HEAVY RAINFALLS.

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APA: Copy

AZIZI, GHASEM, NABAVI, SEYYED OMID, & ABBASI, ESMAEIL. (2010). A SYNOPTIC ANALYSIS OF SPATIAL AND TEMPORAL DISTRIBUTION OF HEAVY RAINFALLS IN RAZAVI AND NORTH KBORASAN PROVINCES. JOURNAL OF THE STUDIES OF HUMAN SETTLEMENTS PLANNING (JOURNAL OF GEOGRAPHICAL LANDSCAPE), 5(12), 71-89. SID. https://sid.ir/paper/175852/en

Vancouver: Copy

AZIZI GHASEM, NABAVI SEYYED OMID, ABBASI ESMAEIL. A SYNOPTIC ANALYSIS OF SPATIAL AND TEMPORAL DISTRIBUTION OF HEAVY RAINFALLS IN RAZAVI AND NORTH KBORASAN PROVINCES. JOURNAL OF THE STUDIES OF HUMAN SETTLEMENTS PLANNING (JOURNAL OF GEOGRAPHICAL LANDSCAPE)[Internet]. 2010;5(12):71-89. Available from: https://sid.ir/paper/175852/en

IEEE: Copy

GHASEM AZIZI, SEYYED OMID NABAVI, and ESMAEIL ABBASI, “A SYNOPTIC ANALYSIS OF SPATIAL AND TEMPORAL DISTRIBUTION OF HEAVY RAINFALLS IN RAZAVI AND NORTH KBORASAN PROVINCES,” JOURNAL OF THE STUDIES OF HUMAN SETTLEMENTS PLANNING (JOURNAL OF GEOGRAPHICAL LANDSCAPE), vol. 5, no. 12, pp. 71–89, 2010, [Online]. Available: https://sid.ir/paper/175852/en

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