identify tele-connection patterns affecting on rainfall in karoon basin
نویسندگان
چکیده
the tele-connection patterns are the major constituents of climate at global and regional scale(s). the karoon basin is of a vital stance in providing natural water supply and hydroelectric; this basin is facing major fluctuations in rainfall regime. identifying the effect of tele-connection on great karoon basin rainfall regime is the subject of this study. to accomplish this objective the seasonal-annual rainfall volumes recorded at stations related to this basin are assessed for the period of (1956-2012) through 12 tele-connection patterns. the method applied here is the data analysis through correlation statistical techniques and analysis of the main climatic components. in this basin, 49.7% of precipitation is of the winter followed by autumn with 34.9% and spring with 14.9%. the findings of the analysis indicate that the precipitation in autumn is influenced mostly by nino4, nino1+2, nino3.4 and soi patterns. the analysis of winter and spring precipitation reveals the influence of scan+ phase on both these seasons. the precipitations of the basin do have a harmonized change pattern with tele-connection pattern by addressing the delay time. it is deduced that these indicators can contribute to moist and dry cycle’s occurrence when the planning regarding this basin is of concern.
منابع مشابه
spring rainfall estimation of khorasan razavi province based on tele-connection synoptically patterns using adaptive neuro-fuzzy inference system
the aim of this research is the assessment of the relation between rainfall and large scale synoptically patterns at khorasan razavi province. in this study, using adaptive neuro fuzzy inference system, the rainfall estimation has been done from april to june in the area under study. spring rainfall data including the information of 38 synoptic, climatologic and rain gauge stations from 1970 to...
متن کاملSpatial analysis and investigation of Tele-connection patterns with drought in central Iran
This study, adopting an environmental approach to atmospheric circulation, estimates drought periods over a 20-year period (1992-2011) in 21 synoptic stations in Kerman, Yazd and Isfahan provinces, which share a long-term statistical period, using Standardized Precipitation Index (SPI). The data pertinent to 18 teleconnection patterns were derived and compared with climatic data of provinces un...
متن کاملspatial analysis and investigation of tele-connection patterns with drought in central iran
drought, as a normal, recurrent climatic condition with complicated mechanism, is one of the least known natural disasters that may occur in any climatic condition. considering the recent drought events in the iran and the deterioration of water crisis, especially in the area under study, the necessity of further research in this area is felt. also, the evaluation and monitoring of drought with...
متن کاملInhomogeneous distributions of Meiyu rainfall in the Jiang-Huai basin, and associated circulation patterns
Using station rainfall data and NCEP/NCAR reanalysis from 1978-2007, we characterize the spatial variations of the heavy rainfall (Meiyu) during June-July over the Jiang-Huai basin (JHB, ~28°–34° N and 110°–122° E) in East China and their associated atmospheric circulations. An empirical orthogonal function (EOF) analysis of the Meiyu rainfall revealed 2 other significant modes besides the domi...
متن کاملThe impact of Amazonian deforestation on Amazon basin rainfall
We completed a meta-analysis of regional and global climate model simulations (n=96) of the impact of Amazonian deforestation on Amazon basin rainfall. Across all simulations, mean (±1σ) change in annual mean Amazon basin rainfall was 12 ± 11%. Variability in simulated rainfall was not explained by differences in model resolution or surface parameters. Across all simulations we find a negative ...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
اکو هیدرولوژیجلد ۳، شماره ۱، صفحات ۹۵-۱۰۵
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023