نوع مقاله : پژوهشی
نویسندگان
1 دانشکده علوم و فنون دریایی، واحد تهران شمال ، دانشگاه آزاد اسلامی
2 پژوهشکده هواشناسی
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
One of the most important atmosphere problems under studies in last few years is the problem of atmospheric energies and measurement of their components. To investigate this problem, scientists have divided it in two parts, kinetic energy and potential energy. The intensity of a cyclone or an anticyclones system is related to the kinetic energy produced by the systems. This amount of kinetic energy is a small portion of the total potential energy that is available to change into kinetic energy and named available potential energy. The work done in this research is the calculation of available potential energy for two different systems over Iran ,in based on A.S.Zverev's (1972) method .Fnl data was provided for two baroclinic systems , for every 6 hours. The first system (The powerful one) is from 17 February 2008 to end of 21 February 2008 and the second (The weak one) is from 29 March 2009 to 2 April 2009 . Another work done in this research to indicate the type of system is the calculation of tilt of axis.
We can see that, the amount of available potential energy was at its maximum at the beginning of cyclone's formation (It was 14549 kJ/m2 for the first system and 6376 kJ/m2 for the second system) and also the tilt of axis at the first time of formation was maximum (89.8º for the first system and 89.85º for the second system) and at the time of decline reach to their smallest value.
کلیدواژهها [English]
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