الاتصال المناخي السطحي بين المملكة العربية السعودية و نصف الكرة الشمالي

الملخص EN

Climatic teleconnection studies are grabbing more importance in the research fields of meteorology and climatology.

Investigation of climate teleconnection between a particular place and other places can provide more understanding of the climate of that place and improve climatic prediction and weather forecast for that place.

This research investigates the possibility of the presence of surface climatic teleconnection between Saudi Arabia and other places in the Northern Hemisphere.

In a previous research it have been found that there is a clear 700 mb gph teleconnection pattern between Saudi Arabia and some places in the Northern Hemisphere.

That research studied one geopotential height, 700 mb gph, and covered only seven months from November to May.

However, it stimulated some questions from which are the followings.

Dose the teleconnection patterns exists in other upper levels? And does this teleconnection manifests it self in surface variables such as surface temperature, precipitation, and surface pressure? The purpose of this study is to answer these questions.

Using upper air data for 1977 grid points in the Northern Hemisphere issued by the National Center for Atmospheric Research (NCAR) in the U S, it have been found that there are many places in the Northern Hemisphere significantly relates to Saudi Arabia in 500 mb gph and 850 mb gph patterns.

These relations have been discovered by using One-point correlation technique and applying GIS techniques.

Some of these places positively related to Saudi Arabia and the other negatively related.

Places that are significantly related to Saudi Arabia were named Center of actions.

To observe the possibility of the existence of similar relationships between these centers of actions and Saudi Arabia in surface climatic variables, the relationship between these places and Riyadh, which represents Saudi Arabia in this Study, were examined.