نوع مقاله : ترویجی
1 استاد پژوهشکده هواشناسی کشور
2 استاد اقلیم شناسی دانشگاه زنجان
3 کارشناس ارشد اقلیم شناسی
عنوان مقاله [English]
A nonlinear dynamic system is erratic weather، It can be estimated that anywhere. Units of the Red Sea Torrential rain fall Asia plays a major role in the Middle East Given the importance of this low pressure, the use of efficient methods Spectral analysis as a useful tool for the study of fluctuations V it is appropriate In this paper cycles Low annual Red Sea during the period 1389-1330, mined, After extraction of the annual cycle using Cluster analysis were grouped into regions associated with cycles According to the research area of low pressure under the sea Red has been a cycle of 8-2 years. Cycles can be identified on the basis of previous research scientists 3-2 cycles related to changes in Earth's climate and 8-3-year-circuit current is also considered related to the El Niño phenomenon.