أثر التغير المناخي في تغير عدد أيام بقاء منخفضات و مرتفعات القطع فوق العراق للمدة 1950- 2016

الملخص EN

The aim of the research is to detect the changes in the number of days of the survival of the lowlands and heights of cutting at the level of 500 mb as a result of climate change over Iraq for the period 1950 - 2016 and the climatic cycles there is a clear trend to decrease the number of days of survival low cut for day and night on the northern regions, The data analysis showed that the seasonal change in the number of days of survival of the low cut on Iraq during the two observations is declining as the lowest number of days of survival of the low in the fifth cycle with the survival rate on the region (0.92) and (0.85) days.

However, the percentage of change in the negative was (40.64% - 45.5% ) for the day and night positions respectively, while the central and southern regions recorded the lowest number of days of survival of the low in the second cycle (0.63) for the two observations.

The rate of change for this session was (99.99 -) (38.23) day for day and night balances, respectively, as this case indicates the weakness of the depth of the grooves and the development of the low to the cutting low due to a weakness in the exchange of energy.

The seasonal number of days of survival of high blocks over Iraq during the night shift is declining as it tends to increase during the rally Day of The lowest number of days of survival of the high in the sixth session on the northern region during the night shift (0.02) days and the amount of change (75% ) a day, the central and southern region and the same record recorded the lowest number of days in the third session (0.07) The increase in the number of days of survival of the high in the fifth cycle (0.12) and the change (100% ) a day, while the central and southern region increased the number of days of survival of the high in the second session ( 0.27) day and the amount of change (125% ) day