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Thermo-hydrological Responses to an Exceptionally Warm, Dry Summer in a High Arctic Environment

机译：在高北极环境中对异常温暖干燥的夏季的热水文响应

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1998 was a very warm year for Canada and the High Arctic was no exception. A typical area was Resolute, Cornwallis Island, Nunavut, where the thaw season was extended and the thawing degree-days were larger than normal. The warm summer was accompanied by early spring melt and low rainfall. This study documents the thermo-hydrological responses including warming of the top soil, deepening of the active layer, alteration of the evaporation pattern, adjustment of the water table positions and runoff. The presence of semi-permanent snowbanks and patchy wetlands buffer some local sites from the warm and dry summer conditions. This and other studies show that the cryospheric and hydro-logic systems may or may not recover quickly from the year to year variations in the climate, depending on how readily the storages (snow, ice and basin moisture) can be replenished. In view of the cumulative effects of storage depletion under climatic warming, short-term studies on thermo-hydrological behaviour in the Arctic provide a useful but insufficient analogue to capture the climatic change impacts.
机译：1998年对于加拿大来说是非常温暖的一年，高北极地区也不例外。一个典型的地区是努纳武特郡康沃尔利斯岛的Resolute，那里的融化季节延长了，融化天数比平常大。温暖的夏天伴随着早春融化和少雨。这项研究记录了热水文响应，包括表层土壤的变暖，活性层的加深，蒸发模式的改变，地下水位的调整和径流。半永久性积雪和零星湿地的存在缓冲了一些温暖和干燥夏季条件下的局部地区。这项研究和其他研究表明，冰冻圈和水文系统在逐年的气候变化中可能会恢复，也可能不会迅速恢复，这取决于可对储藏量（雪，冰和盆地中的水分）进行补充的便捷程度。考虑到气候变暖下储存枯竭的累积影响，对北极热水文行为的短期研究提供了一个有用的但不足以捕捉气候变化影响的类似物。

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