Dulan County
| Dulan County ᠳᠤᠯᠠᠭᠠᠨ ᠰᠢᠶᠠᠨ 都兰县 | |
|---|---|
| County | |
  Dulan Location in Qinghai | |
| Coordinates: 36°18′N 98°05′E / 36.300°N 98.083°ECoordinates: 36°18′N 98°05′E / 36.300°N 98.083°E | |
| Country | China |
| Province | Qinghai |
| Autonomous prefecture | Haixi |
| Township-level divisions |
4 towns 4 townships |
| Elevation | 3,194 m (10,479 ft) |
| Time zone | China Standard (UTC+8) |
| Postal code | 816100 |
Dulan County (Mongolian:ᠳᠤᠯᠠᠭᠠᠨ ᠰᠢᠶᠠᠨ simplified Chinese: 都兰县; traditional Chinese: 都蘭縣; pinyin: Dūlán Xiàn) is a county of east-central Qinghai province, China. It is under the administration of Haixi Mongol and Tibetan Autonomous Prefecture.
Climate
With an elevation of around 3,200 metres (10,000 ft), Dulan County has a subalpine semi-arid climate (Köppen BSk), with long, very cold and winters, and warm summers. Average low temperatures are below freezing from early/mid October to mid/late April; however, due to the wide diurnal temperature variation, only December and January have an average high that is below freezing. With monthly percent possible sunshine ranging from 60% in July to 81% in November, the county seat is very sunny, receiving 3,092 hours of bright sunshine annually; relative humidity in all months is below 50% and is for six months below 40%. The monthly 24-hour average temperature ranges from −9.8 °C (14.4 °F) in January to 14.8 °C (58.6 °F) in July, while the annual mean is 3.16 °C (37.7 °F). Over 70% of the annual precipitation of 194 mm (7.64 in) is delivered from May to August.
| Climate data for Dulan County (1971−2000) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average high °C (°F) | −2.5 (27.5) |
0.4 (32.7) |
5.3 (41.5) |
11.0 (51.8) |
15.9 (60.6) |
19.0 (66.2) |
21.4 (70.5) |
21.2 (70.2) |
16.5 (61.7) |
10.2 (50.4) |
3.6 (38.5) |
−0.9 (30.4) |
10.1 (50.2) |
| Average low °C (°F) | −14.9 (5.2) |
−11.7 (10.9) |
−6.6 (20.1) |
−1.8 (28.8) |
2.9 (37.2) |
6.6 (43.9) |
9.0 (48.2) |
8.4 (47.1) |
4.0 (39.2) |
−2.2 (28) |
−8.8 (16.2) |
−13.3 (8.1) |
−2.4 (27.7) |
| Average precipitation mm (inches) | 4.0 (0.157) |
4.8 (0.189) |
8.4 (0.331) |
9.1 (0.358) |
24.7 (0.972) |
41.7 (1.642) |
46.5 (1.831) |
26.5 (1.043) |
14.8 (0.583) |
5.9 (0.232) |
3.9 (0.154) |
3.5 (0.138) |
193.8 (7.63) |
| Average precipitation days (≥ 0.1 mm) | 4.4 | 3.6 | 4.6 | 3.5 | 6.6 | 9.6 | 11.3 | 7.5 | 5.2 | 2.9 | 2.3 | 3.7 | 65.2 |
| Average relative humidity (%) | 42 | 37 | 34 | 31 | 47 | 46 | 49 | 45 | 43 | 36 | 34 | 38 | 40.2 |
| Mean monthly sunshine hours | 231.8 | 220.4 | 250.2 | 278.1 | 288.1 | 268.3 | 268.0 | 278.3 | 257.0 | 271.7 | 248.0 | 231.9 | 3,091.8 |
| Percent possible sunshine | 75 | 72 | 68 | 71 | 66 | 62 | 60 | 66 | 69 | 78 | 81 | 77 | 70.4 |
| Source: China Meteorological Administration | |||||||||||||