تغير تكرار المركز الثانوي لمنخفض الهند الموسمي على العراق و أثرة في تغيير بعض خصائص الفترة الرطبة في صيف محافظة البصرة

الملخص EN

This research aims to study the impact of change repeat secondary center of the Indiaian seasonal low to Iraq during the period from 20 July to 31 August which represents the wet duration in the summer of Basra province.

As shown by an analysis, repeatition of the secondary center Indiaian seasonal low and the number of days remaining on Iraq in conditions of formation the wet durationin Basra for the climatic cycles (1958-1968, 1978-1988 and 1998-2008).

A trend towards the decline in frequency on Iraq for the humid days.

The research reached the following results: 1-Areducation in the recurrence of secondary low center of Monsoon Indie depression as was the amount of change repetition of the North Basra station for 00 GMT (4.6-) and 12 GMT( 2.9-) to humid period for 00 GMT (0.77 -) and 12 GMT( 1.1-) days for three Climate Number of days status secondary low center of Monsoon Indie depression over Iraq a down ward trend as the total amount change to North Basra station for (4_) 2-Acomanied this change lowering repeat south- east wind which’s the source of moisture relative humidity to the limits of low the amount of change repetition3.5-change repetition of clam wind to(0.7-)caused low trend for Relative Humidity for (12.05-) `