## 4 Results  
### Air Temperature Analysis in the Varzob River Basin  
The Varzob River Basin's various regions' monthly air temperatures are shown in Figure 2. The Anzob station's territory is in an area with a climate that is only moderately humid, with mild winters and relatively warm summers. The ambient temperature is \(-1.8\)\({}^{\circ}\)C on a yearly average. The time without frost typically lasts 83 days. January is the coldest month with an average temperature of (\(-12.1\)\({}^{\circ}\)C). The average minimum air temperature is \(-15.8\)\({}^{\circ}\)C in January, however, severe cold air masses can cause it to plunge as low as \(-24\)--\(36\)\({}^{\circ}\)C. At the same time, throughout the winter, it can warm up to \(-5\)\({}^{\circ}\)C during the day on some days. July is the hottest month (\(+9.7\)\({}^{\circ}\)C). The maximum temperature during the hottest months is \(+24\)\({}^{\circ}\)C, with the air warming up to \(+20\)\({}^{\circ}\)C during the day. At the same time, if the minimum temperature is typically \(+5\)--\(6\)\({}^{\circ}\)C in the summer, it can occasionally fall to \(-4\)--\(5\)\({}^{\circ}\)C at night in the coldest years. In the summer, the absolute minimum temperature was \(-10\)\({}^{\circ}\)C.  
The Maykhura and Ziddi rivers meet at the Maykhura station area. The valley close to the station has rather steep slopes and is relatively narrow (200-300 m). The station is 1921 m a.s.l. The station's territory is in an area with a climate that is moderately humid, with mild winters and pleasant summers. The first frosts appear in October, and the air-frost period lasts until mid-May. January is the coldest month of the year (average temperature of \(-8.6\)\({}^{\circ}\)C). The severe cold air masses can cause the average minimum air temperature to plunge as low as \(-20\)--\(27\)\({}^{\circ}\)C. At the same time, during the daytime in the winter, the air temperature might drop to 0--\(7\)\({}^{\circ}\)C below zero on some days. July is the hottest month of the year (average temperature of \(+18.6\)\({}^{\circ}\)C). The air warms up to \(+25\)-\(28\)\({}^{\circ}\)C during the warmer months, with \(+35\)\({}^{\circ}\)C being the absolute maximum. At the same time, if the minimum temperature is typically \(+7\)--\(8\)\({}^{\circ}\)C in the summer, it may occasionally fall to \(+3\)\({}^{\circ}\)C at night in the coldest years. We discovered that the warmest month of the year is thought to be July, and the coldest month of the year is thought to be January by keeping track of the meteorological data (temperature) during the period 1960-1990. The winter period in the middle part of the river basin is not very severe and the temperature background practically corresponds to the seasons. The calendar months of winter, namely December, January, and February, show relatively negative values. With the onset of spring, the temperature consistently shows a positive temperature. Hushyori station's region is in an area with a climate that is moderately humid, with pleasant summers and mild winters. The average yearly temperature is \(+11.2\)\({}^{\circ}\)C. The time without frost is typically \(225\) days long. January is the coldest month. The minimum air temperature is typically \(-5.2\)\({}^{\circ}\)C, although it can fall as low as \(-20\)--\(27\)\({}^{\circ}\)C when huge cold air masses arrive. At the same time, it can get warmer during midday in the winter on some days, reaching \(+5\)-\(14\)\({}^{\circ}\)C heat. July is the hottest month with \(+24.2\)\({}^{\circ}\)C (average temperature). The maximum temperature in the hottest months is \(+39\)\({}^{\circ}\)C, with the air warming up to \(+25\)-\(30\)\({}^{\circ}\)C during the day. In contrast, if the minimum temperature is typically \(+13\)--\(16\)\({}^{\circ}\)C in the summer, it may occasionally fall to \(+3\)\({}^{\circ}\)C at night in the coldest years. By monitoring the meteorological data of the two periods (1960-1990 and 1991-2018), we found out that July is the warmest month and January is the coldest month of the year.