Main Climatic Characteristics and Peculiarities of Their Changes in the Debed River Basin Area

Abstract

The purpose of the study is to analyze the patterns of time fluctuations in the main climatic characteristics (annual temperature air and precipitation) of the Debed River basin. Materials and methods. The article used the methods of mathematical and statistical, extrapolation, analysis, analogy, correlation, cartographic. As a baseline, data from actual observations of surface air temperature and precipitation in the Debed River basin on the territory of Armenia were used. The study was performed on 6 meteorological stations of the Debed River in long rows observational data from the mid-1960s. to 2018. Results and discussion. A close correlation between annual values of air temperature and precipitation was obtained, which can be used in the study area of the basin. The intra-annual distribution of air temperature, precipitation and river runoff, changes in mean annual air temperature and precipitation for both the entire Debed River basin area and for each of the meteorological stations currently in operation are presented. Conclusions. There is considerable variability in the average annual surface temperature and annual precipitation in the Debed River basin. There is a widespread upward trend in average annual air temperature and a predominantly downward trend in annual precipitation. Some weather stations are showing an upward trend in precipitation. With the absolute altitude of the terrain, a decrease in the average annual air temperature is found.