Simultaneous effect of NAO and AMO remote bonding indices on temperature and precipitation variability of cities adjacent to Sabalan

Coordination between the temporal changes of two distant points, which is mainly used for pressure changes, is called remote connection. The purpose of this study is to investigate the variability of temperature and precipitation parameters of Ardabil, Meshginshahr, Sarab and Harris stations from two remote connection models of North Atlantic Oscillation Index and Pacific Decades Index using Pearson torque correlation method and synoptic analysis. For this purpose, data related to the two mentioned indicators were prepared from the Nova site for the period 2009-2018. Also, for this statistical period, data related to temperature and precipitation parameters were obtained from Ardabil Meteorological Department. Then, after standardization of temperature and precipitation, using Pearson correlation method for NAO index, it was found that the temperature of all stations in June, October and February precipitation of Ardabil station had the highest significant direct correlation with 99 and 95% confidence level with this index. The AMO index also showed a direct relationship with the January temperature of Harris station with only 5% probability of error. In order to investigate the effect of these patterns on the studied parameters of NETCDF data, monthly mean sea level pressure, geopotential level of 500 hPa, temperature and rainfall water were obtained from Nova site and synoptic maps were drawn in Gardes software environment. The results showed that when NAO index is in negative phase and AMO index is in hot phase, the dominant system in the studied areas is low thermal pressure and rotational conditions prevail and temperature and rainfall increase and wetting occurs, unlike when NAO index is in phase. The AMO index is positive in the cold phase, with the dominance of high-pressure systems and rotation conditions in the study areas, the temperature and rainfall have decreased and the drought conditions have been determined.