الحاجز الضغطي المرتفع عند المستوى الضغطي السطحي (1000)‎ هكتوباسكال

Abstract EN

The research dealt with an important phenomenon, which is the blocking high pressure that is formed at the surface level (1000) hpa, and is affected by weather and climate of Iraq.

This phenomenon has been studied by relying on Plymouth maps of the surface pressure level.

For two different climatic cycles Depending on this, nine climate stations are (Sulaymaniyah, Mosul, Baghdad, Anah, Rutbah, Nukhayb, Al Hayy, Nasiriyah and Basra It was found that Iraq is affected by two types of it, namely the inverted omega type, and the opposite (high pressure with low pressure), and it was found that its most frequent occurrences appear in the daytime observation (12), and its repetitions are in the first cycle (1951-1961) The recurrences recorded in the second cycle (1998-2008) exceeded the number of occurrences recorded, and the lowest number of occurrences recorded was for the type of opposing existing and for both sessions, and found that the most systems that contribute to the imprisonment of the pressure barrier are the Sudanese and Indian low.