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...

We used the analogue method to generate ensemble projections of local daily mean, maximum and minimum air temperatures in the NW Iberian Peninsula until the middle of this century. A 3-step method was followed. (1) The error of the analogue method under optimal conditions was estimated, using air temperatures at 850 hPa and mean sea level pressure from reanalysis data as predictor variables. (2...

introduction precipitation, an intrinsic part of nature, is essential not only for the survival of human but also for that of plants and animals. yet, this valuable natural phenomenon can also jeopardise human life, flora and fauna. torrential rains are sudden events that wreak havoc in iran and other parts of the world. in recent years, due to man's abuse of nature and disruption of environmen...

Fractionation of stable isotopes in precipitation runs through the water cycle, and deuterium excess is a second-order parameter linking water-stable oxygen hydrogen isotopes. It strongly influenced by under-cloud evaporation unsaturated air, especially arid climates. Based on improved Stewart model, this study used 670 isotope data measured meteorological element from 11 sampling points Januar...

Extremely hot days in Japan are known to persist for a week or more, and they measured by the temperature anomaly at 850 hPa averaged over derived from JRA-55 reanalysis data, denoted as T850JP. Severe high-temperature anomalies often accompanied multiple teleconnection patterns that affect weather Japan, but their relative contribution individual heat wave events has not yet been quantified. I...

in this paper, the correlation between total ozone and upper air meteorological parameters such as heights of geopotential surfaces and temperatures for three stations of tehran, ankara and bet dagan located in the middle east, in cold period (jan, feb and march) of years of 2005, 2007 and 2008 has been investigated. data for upper air is taken from wyoming university and ozone data is from sat...

By using the daily average wind speed and precipitation data of 125 stations in Jiangsu Anhui Provinces China from 1961 to 2020 monthly NCEP/NCAR reanalysis data, interannual variation characteristics its possible reasons spring compound extreme events Jiangsu–Anhui region were discussed. Results show that generally present a lesser distribution south more north. The occurring (north) 32° N are...