HOME

TheInfoList



OR:

Lake Puma Yumco (; ) is a lake located at
above mean sea level Height above mean sea level is a measure of the vertical distance ( height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum. In geodesy, it is formalized as '' orthometric heights''. Th ...
on the southern
Tibetan Plateau The Tibetan Plateau (, also known as the Qinghai–Tibet Plateau or the Qing–Zang Plateau () or as the Himalayan Plateau in India, is a vast elevated plateau located at the intersection of Central, South and East Asia covering most of the Ti ...
, and is situated within Nagarzê County of the
Tibet Autonomous Region The Tibet Autonomous Region or Xizang Autonomous Region, often shortened to Tibet or Xizang, is a province-level autonomous region of the People's Republic of China in Southwest China. It was overlayed on the traditional Tibetan regions ...
. It is long, wide, and covers an area of . Streams of water from the snow-capped surrounding mountains feed the lake, and its water surplus flows into Yamdrok Lake via an outlet located at its southeastern end. Some sediment can be seen entering the lake at its western end. Puma Yumco literally means ''The Blue Jewel which is floating in the sky''. The lake freezes in winter and is crossed by shepherds with their sheep. Since the climate is warming, the ice is becoming thinner and thus creates a problem for the 120 people living off and around the lake. The lake is considered ultraoligotrophic, meaning that nutrient concentrations in both the water column and lake sediments are extremely low. Water in such lakes tends to be blue to blue-green and to have high clarity due to low levels of
photosynthesizing Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities. Some of this chemical energy is stored in ...
organisms such as
phytoplankton Phytoplankton () are the autotrophic (self-feeding) components of the plankton community and a key part of ocean and freshwater ecosystems. The name comes from the Greek words (), meaning 'plant', and (), meaning 'wanderer' or 'drifter'. ...
. During the winter, the lake develops intricate ice block patterns on the surface, ranging from less than ten to hundreds of metres in diameter. The ice pattern is caused by repeated cycles of freezing, fracturing, and refreezing of the ice due to variations in temperature and wind-induced ice motion.


Climate

The area around Lake Puma Yumco has a dry
tundra climate The tundra climate is a polar climate sub-type located in high latitudes and high mountains. undra climate https://www.britannica.com/science/tundra-climateThe Editors of Encyclopaedia Britannica, 2019 It is classified as ET according to Köppen ...
(''ET'') with long, very cold, very dry winters and short, cool, somewhat humid summers. There is a great variety between day and night. Summer temperatures often rise to 15 °C (59 °F), but even then they often fall below freezing at night time. Likewise, while temperatures do reach temperatures above freezing even in January, at night time they commonly reach −20 °C (−4 °F). Thanks to the cold temperatures, the lake is frozen over most of the year. There is almost no precipation in the winter months, most of the only 9.6 inches of precipation that fall during a year fall in July and August, and in that case as rain, snow is uncommon.


References

*
Arte TV Show Description


External links

* Puma Yumco {{Tibet-geo-stub