اثر تغير المناخ في تغير العلاقة بين المنظومات الجوية السطحية والعليا فوق العراق == The Impact Of Climate Change In The Changing Relationship Between Surface Pressure Systems And The Upper Pressure Systems Over Iraq
Author name:
عبد العباس عواد لفتة الوائلي
Supervisor name:
كاظم عبد الوهاب حسن الاسدي
General topic:
Geography
Specific topic:
Geography
Degree:
Doctorate
University:
University Of Basrah - College Of Education For Human Sciences - Department Of Geography
Language:
Arabic
University location:
Basrah
First pages:
10T1428 - p.pdf
Abstract:
تهدف الدراسة الى تحليل اثر تغير المناخ في تغير العلاقة بين المنظومات الضغطية السطحية والمنظومات الضغطية العليا المرافقة لها فوق العراق، من خلال معرفة المنظومات السطحية المؤثرة على مناخه والمتمثلة بالمرتفعات والمنخفضات الجوية والركود الهوائي عند مستوى (100 | The study aims to analyze The impact of climate change in the changing relationship between Surface pressure systems and the upper pressure systems over Iraq, by knowing the surface systems of anticyclones , depressions and Col aerial at (1000) hpa, the upper phenomena over the air waves (Transverse, troughs and ridges) at (500) hpa, and the Jet streams (sub - tropical and sub - polar) at (200) hpa and at (300) hpa , And the impact of change in climatic characteristics change over Iraq from the temperature minimum, maximum, relative humidity and atmospheric pressure and rainfall. This was based on the collection and analysis of maps ritual daily and balances (1200 GMT) and published in the global telecommunications network (the Internet), including meteorological center in the state of Plymouth United States National Oceanic and Atmospheric Administration (NOAA) and calculate the number of days survival systems piezoelectricity totalitarian high and low and the recession over parts of Iraq, Iraq has been divided into three area ((Northern, central and southern) By latitude, has been mapping the surface ritual and upper analysis for the period (1950 / 1951 - 1960 / 1961) the first as a cycle and (2003 / 2004 - 2013 / 2014) as a cycle second., and extract the monthly average and its percentage of comparing and calculating the change in those systems piezoelectricity, where Iraq is exposed to several types of systems piezoelectricity It is a conflict between different types of systems surface piezoelectricity, and through the study area it became clear that Iraq is exposed to more than (13) Pressure systems, including five high represented at Siberian high, European , Sub - Tropical , Azzurri and local, and eight depressions systems represented Indian low,Sudanese, the Mediterranean Sea, the Arabian Peninsula, seas west Asia (Depressions Caspian and Black) , the red sea , the local sea and integrated, and the phenomenon of Col aerial.The study consisted of six chapters, the first chapter will be of two sections first ensure that the theoretical framework and methodology of the study and the second examined the impact of global climate change in the change Iraq climate, The second chapter studied the anticyclones and the upper phenomena accompanying the two above, while the third chapter two sections included first studied the subject depressions and upper phenomena associated with them for two sessions, while he fifth chapter dealt with the changing relationship between surface depressions and waves upper and jet streams, Chapter VI dealt with the impact of the changing relationship between totalitarian systems Sainopetical surface and upper change in climatic characteristics over Iraq The study found : 1. The phenomenon of climate change, which increased change the natural characteristics of the atmosphere, where human factors form the basis of the source of this phenomenon is caused by the launched of gases in the atmosphere are increasing, leading to climate change and its impact on the changing relationship between systems piezoelectricity surface systems upper accompanying her.2.The study revealed a clear change in the duration of survival systems piezoelectricity high surface systems piezoelectricity upper accompanying over Iraq between sessions, where Siberian - Anticyclone and the European Anticyclone a rate and a higher percentage back in the second round than in the first session, while the high subtropical he scored low in recurrence of the number of days survival rate in the second session In the first session, despite the limited number of days remaining in the month with indentations accompanying high rate, and the average number of days the survival to Azzurrian anticyclone and Local anticyclone in this month there appeared in the first session and did not demonstrate in the second session.3. high for the survival of anticyclones and depressions influential and that contributed to the weather and climate change Iraq, but it was accompanied by such systems high accompany the zonal index review and the sub - tropical jet stream in the second session the largest percentage of troughs and ridges and the sub - polar jet stream.4.there are suborbital jet streams it was speeds did not exceed (44 m / s) the highest and the duration of stay of sub - polar jet stream which was his speed in the first session (40, 45, 48) m / s, while Speed down in the second session to (35, 30 , 35) m / s over the northern region and medium region and Southern region, respectively, but it was more to accompany the anti cyclones of the sub - polar jet streams except December and January Monthly.5.Change the relationship between those systems which led to the change of climate characteristics, which increased temperatures and decreased relative humidity and atmospheric pressure values have changed over the study stations.6.It shows that the air depressions in the month (December , January , February and March) was to accompany troughs have a rate more frequent than the waves transverse and ridges, but it changed in the second session so that the waves became reviewed more escort her from the troughs in addition to the high recurrence jet streams rate sub - Tropical accompanying her.7.Increase repeat phenomenon Col aerial in the transitional seasons and less in cold season and warm season is due to be in the transitional seasons where meet systems range surface piezoelectricity high and low for wrestle over Iraq, allowing his chances to be the phenomenon of Col aerial before that occupies a strong same area system, leading to higher survival rate in spite of the limited number of days.
