Tongde County
| Tongde County 同德县 | |
|---|---|
| County | |
  Tongde Location in Qinghai | |
| Coordinates: 35°00′N 100°30′E / 35.000°N 100.500°ECoordinates: 35°00′N 100°30′E / 35.000°N 100.500°E | |
| Country | People's Republic of China |
| Province | Qinghai |
| Autonomous prefecture | Hainan |
| Time zone | China Standard (UTC+8) |
Tongde County (simplified Chinese: 同德县; traditional Chinese: 同德縣; pinyin: Tóngdé Xiàn) is a county of Qinghai province, China. It is under the administration of Hainan Tibetan Autonomous Prefecture.
Geography
Tongde County has an alpine subarctic climate (Köppen Dwc), with long, very cold and dry winters, and short, rainy, mild summers. Average low temperatures are below freezing from mid/late September to mid May; however, due to the wide diurnal temperature variation (at an average 16.9 °C or 30.4 °F), only January has an average high that is below freezing. Despite frequent rain during summer, when a majority of days sees rain, no month has less than 50% of possible sunshine; with monthly percent possible sunshine ranging from 51% in June to 81% in November, the county seat receives 2,806 hours of bright sunshine annually. The monthly 24-hour average temperature ranges from −13.1 °C (8.4 °F) in January to 11.5 °C (52.7 °F) in July, while the annual mean is 0.45 °C (32.8 °F). Over 70% of the annual precipitation of 431 mm (17.0 in) is delivered from June to September.
| Climate data for Tongde County (1971−2000) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average high °C (°F) | −1.2 (29.8) |
1.9 (35.4) |
6.7 (44.1) |
11.3 (52.3) |
14.3 (57.7) |
16.4 (61.5) |
18.4 (65.1) |
18.8 (65.8) |
14.8 (58.6) |
10.1 (50.2) |
4.4 (39.9) |
0.5 (32.9) |
9.7 (49.5) |
| Average low °C (°F) | −22.4 (−8.3) |
−17.9 (−0.2) |
−11.6 (11.1) |
−6 (21) |
−0.1 (31.8) |
3.5 (38.3) |
5.1 (41.2) |
4.2 (39.6) |
0.6 (33.1) |
−5.9 (21.4) |
−15.4 (4.3) |
−21 (−6) |
−7.2 (19) |
| Average precipitation mm (inches) | 2.8 (0.11) |
3.7 (0.146) |
7.9 (0.311) |
19.6 (0.772) |
55.4 (2.181) |
84.7 (3.335) |
99.6 (3.921) |
73.2 (2.882) |
57.7 (2.272) |
22.4 (0.882) |
2.9 (0.114) |
1.5 (0.059) |
431.4 (16.985) |
| Average precipitation days (≥ 0.1 mm) | 3.5 | 3.8 | 6.3 | 7.9 | 15.3 | 18.0 | 19.3 | 16.3 | 14.2 | 7.7 | 2.1 | 1.7 | 116.1 |
| Average relative humidity (%) | 43 | 40 | 40 | 47 | 59 | 68 | 73 | 72 | 71 | 63 | 51 | 42 | 55.8 |
| Mean monthly sunshine hours | 235.2 | 216.9 | 234.2 | 248.4 | 242.6 | 221.4 | 230.4 | 247.9 | 204.1 | 231.4 | 249.7 | 243.8 | 2,806 |
| Percent possible sunshine | 76 | 71 | 64 | 64 | 56 | 51 | 52 | 60 | 55 | 66 | 81 | 80 | 63 |
| Source: China Meteorological Administration | |||||||||||||