Pagsum Co
View north-east from Tashi Island
Pagsum Co is located in Tibet
Pagsum Co
Pagsum Co
LocationGongbo'gyamda County, Tibet
Coordinates30°00′51″N 93°57′01″E / 30.01417°N 93.95028°E / 30.01417; 93.95028
Basin countriesChina
Max. length18 km (11 mi)
Surface area27 km2 (10 sq mi)
Max. depth120 m (390 ft)
Surface elevation3,700 m (12,100 ft)

Dragsum Tsho (Tibetan: བྲག་གསུམ་མཚོ་, Wylie: brag gsum mtsho, THL: Draksum Tso, Pagsum Co (simplified Chinese: 八松错; traditional Chinese: 八松錯; pinyin: Bāsōng Cuò), literally meaning “three rocks” in Tibetan,[1] is a lake covering 28 square kilometres in Gongbo'gyamda County, Nyingchi of the Tibet Autonomous Region, China, approximately 300 km (190 mi) east of Lhasa. At 3,700 metres over sea level it is about 18 km long and has an average width of approximately 1.5 km (0.93 mi). The deepest point of the green lake measures 120 metres. The lake is also known as Gongga Lake.

Climate

Climate data for Pagsum Lake
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean daily maximum °C (°F) 5.2
(41.4) 		6.9
(44.4) 		10.3
(50.5) 		13.8
(56.8) 		17.0
(62.6) 		19.7
(67.5) 		20.5
(68.9) 		20.3
(68.5) 		18.4
(65.1) 		14.7
(58.5) 		10.1
(50.2) 		6.6
(43.9) 		13.6
(56.5)
Daily mean °C (°F) −2.4
(27.7) 		−0.1
(31.8) 		3.3
(37.9) 		6.8
(44.2) 		10.4
(50.7) 		13.7
(56.7) 		14.8
(58.6) 		14.4
(57.9) 		12.5
(54.5) 		8.0
(46.4) 		2.6
(36.7) 		−1.1
(30.0) 		6.9
(44.4)
Mean daily minimum °C (°F) −10.0
(14.0) 		−7.1
(19.2) 		−3.7
(25.3) 		−0.2
(31.6) 		3.8
(38.8) 		7.7
(45.9) 		9.1
(48.4) 		8.5
(47.3) 		6.6
(43.9) 		1.4
(34.5) 		−4.9
(23.2) 		−8.8
(16.2) 		0.2
(32.4)
Average precipitation mm (inches) 2
(0.1) 		3
(0.1) 		10
(0.4) 		27
(1.1) 		51
(2.0) 		108
(4.3) 		117
(4.6) 		100
(3.9) 		89
(3.5) 		28
(1.1) 		5
(0.2) 		2
(0.1) 		542
(21.4)
Source: Climate-Data.org

Footnotes

  1. ^ 国家测绘局地名研究所 (National Surveying and Naming Research Institute) (1995). Xizang Diming : Bod ljoṅs sa miṅ ; Place Names of the Xizing Autonomous Region 西藏地名 | བོད་ལྗོངས་ས་མིང། [Tibetan Place Names]. Beijing: China Tibetology Press (中国藏学出版社). p. 15. ISBN 7-80057-284-6.; The name is sometimes confused with Basum (Basong Xiang 巴松乡 / dba’ gsum དབའ་གསུམ) in Tingri County, Shigatse, due to the similarity of the Chinese names.


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