In Canada, the dry lake

Photo Thomas Barothy.

According painstaking satellite imagery, in 2000-2009, Canada lost 6.7 thousand km? (1.2%), water surface area (of the country's 1.3 million lakes).
It's weird. It was predicted that the lake will grow, not shrink.
Reduction of Arctic lakes were observed before, but only in the most southern part of the Arctic, where warming is melting the permafrost and allow water to go into the soil. A new study by Mark Carroll of the University of Maryland (USA), says the opposite: the northern lakes are likely to be dry, and the south — no.
This is surprising, if only because that during the study period, the northern region has received more precipitation.
The lakes are mainly replenished by seasonal snowmelt. Theoretically, the temperature increase in the region would lead to a decrease in snow cover and promote the growth of the lakes. Another factor may be a delicate balance between precipitation and evaporation: the higher the temperature, the stronger the wind, the greater the evaporation. As for the mentioned permafrost — so far there is no evidence that in Canada, it is the mass melts.
Water loss can affect the amount of greenhouse gases produced ecosystem of the region. When the lakes dry up, are exposed sedimentary rocks start to give carbon dioxide. At the same time, standing water methane, and therefore capable of drying wetlands reduce this greenhouse gas.

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