Meteorological factors | Jan. | Feb. | Mar. | Apr. | May | June | July | Aug. | Sept. | Oct. | Nov. | Dec. |
Temperature (˚C) | −7.7 ± 0.4 | −1.6 ± 0.2 | 7.58 ± 0.4 | 15.7 ± 1.3 | 21.19 ± 1.8 | 25.33 ± 2.4 | 27.03 ± 2.2 | 25.58 ± 1.8 | 20.0 ± 1.5 | 11.5 ± 0.9 | 2.34 ± 0.3 | −5.52 ± 0.4 |
Precipitation (mm) | 1.51 ± 0.2 | 1.8 ± 0.2 | 1.86 ± 0.2 | 2.56 ± 0.6 | 4.98 ± 0.8 | 7.25 ± 0.7 | 7.83 ± 0.6 | 5.58 ± 0.3 | 2.91 ± 0.3 | 1.81 ± 0.1 | 1.22 ± 0.2 | 1.22 ± 0.1 |
Wind speed (m/s) | 5.3 ± 0.3 | 4.4 ± 0.4 | 10.7 ± 1.1 | 14.8 ± 1.4 | 12.6 ± 1.4 | 6.2 ± 1.4 | 4.1 ± 1.1 | 4.7 ± 0.4 | 5.2 ± 0.5 | 4.2 ± 0.5 | 6.3 ± 1.0 | 7.8 ± 0.5 |
Dust storm frequency (times) | 0.7 ± 0.3 | 5.7 ± 0.4 | 17.8 ± 1.3 | 23.9 ± 2.6 | 12.9 ± 1.1 | 6.7 ± 0.4 | 5.3 ± 0.3 | 4.7 ± 0.2 | 2.6 ± 0.2 | 2.5 ± 0.1 | 0.8 ± 0.3 | 0.5 ± 0.2 |