the aim of this research is the study of trends in annual precipitation changes in some selected stations located in the sefid rood basin, applying the man-kendall non-parametric technique. the method is one of the most frequently used non-parametric techniques for trend analysis of precipitation on an annual scale. six synoptic stations located in the sefid rood basin were selected for the ana...

abstract the averages of monthly minimum temperature and wind speed in 32 synoptic stations in northwest and west of iran used for calculate windchill temperature from november to april. then maps of spatial differences were drawn for every month and windchill regions classified by cluster analysis. keywords: iran, windchill, regionalization, classification.

Past climatological research has not quantitatively defined the synoptic-scale circulation deviations responsible for anomalous summer-season precipitation totals in the southeastern United States. Therefore, the objectives of this research were to determine the synoptic-scale controls of wet and dry multiday periods during the summer within a portion of the southeastern United States as well a...

We consider estimation of the long-term average power output from a wind turbine generator at a site for which little data on wind speeds is available. Long..termrecords of wind speeds at the twelve synoptic meteorological stations are also used. Inference is based on a simple and parsimonious approximating model which accounts for the main features of wind speeds in Ireland, namely seasonal.ef...

abstract consistent decreasing and increasing of temperature in the short-term period that is called freezing and thaw cycles is one of the important factors of damage to crop productions. in this research as to determine freezing and thaw cycles in the khorasan razavi province, the data of daily minimum and maximum temperatures of 9 synoptic stations was used over 20 statistic years (1989-2008...

This chapter deals with the requirements for observations at aeronautical meteorological stations and the instruments and methods that are used. Synoptic observations measure at one location a representative value for a rather large area, but meteorological observations for aeronautical purposes are often made at several locations at the aerodrome and in the surrounding area, at more frequent i...