Climatic Change Journals

The motivation behind this examination is to contemplate the plausible deviation of temperature and precipitation components in the northwest of the nation from typical. For this reason, from the outset, the time arrangement of the base temperature and the month to month precipitation of the chose brief meteorological stations of the area for the past 50 years (1956-2005) were gathered and balanced. The measurable insufficiencies of some arrangement were amended by the twofold mass technique, so as to research and perceive the progressions of the time arrangement The Kendall test and the Mann-Kendall factual realistic measurable test were utilized and the sort and time of the difference in information were resolved. The consequences of the exploration show that accepting arbitrariness of the information. It is firmly dismissed and the pattern circumstance is predominant on the information. In light of the realistic graphs, changes in the boundaries u and u mean least temperature and precipitation in the area over the past 50 years have been changed. These progressions are transient vacillations and pattern. This is generally apparent in most time arrangement since the 1990s. Regarding the circulation of time and area of significant precipitation in the district, particularly in the east and west of Lake Urmia, abrupt changes and critical transformation and during the 1990s and 2000s, the precarious slant was on the drawback of the medium-temperature least and encourage arrangement. As far as the normal temperature, there is an insignificant complexity between the west and east of the district. Accordingly, in the west of Lake Urmia transformations and abrupt changes are huge the negative way. Be that as it may, in the eastern lake (Tabriz), a noteworthy temperature transformation in the majority of the months of it is a positive one, which is probably going to be an ongoing marvel of late urbanization in this local logical inconsistency. In northern and southern pieces of the locale, no critical changes were seen as far as temperature and the typical state was watched.