Increasing air temperature is a significant feature of climate warming, and is cause for some concern, particularly on the Tibetan Plateau (TP). A lack of observations means that the impact of rising air temperatures on TP lakes has received little attention. Lake surfaces play a unique role in determining local and regional climate. This study analyzed the effect of increasing air temperature on lake surface temperature (LST), latent heat flux (LE), sensible heat flux (H), and ice phenology at Lake Nam Co and Lake Ngoring, which have mean depths of approximately 40 m and 25 m, respectively, and are in the central and eastern TP, respectively. The variables were simulated using an adjusted Fresh-water Lake (FLake) model (FLake_α_ice = 0.15). The simulated results were evaluated against in situ observations of LST, LE and H, and against LST data derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) for 2015 to 2016. The simulations show that when the air temperature increases, LST increases, and the rate of increase is greater in winter than in summer; annual LE increases; H and ice thickness decrease; ice freeze-up date is delayed; and the break-up date advances. The changes in the variables in response to the temperature increases are similar at the two lakes from August to December, but are significantly different from December to July.

中文翻译：

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气候变暖对青藏高原不同类型湖泊湖泊表面热交换和冰物候的影响

气温升高是气候变暖的一个重要特征，引起人们的关注，尤其是在青藏高原。缺乏观测结果意味着气温上升对TP湖的影响几乎没有引起注意。湖泊表面在决定当地和区域气候方面发挥着独特的作用。这项研究分析了平均气温约为40 m的湖面温度（LST），潜热通量（LE），显热通量（H）和冰物候学的气温升高对南科湖和纳戈林湖的影响。和25 m分别位于TP的中部和东部。使用调整后的淡水湖（FLake）模型（FLake_α_ice= 0.15）模拟变量。针对LST，LE和H的原位观察结果对模拟结果进行了评估，模拟结果显示，从中分辨率成像光谱仪（MODIS）获得的LST数据为2015年至2016年。模拟显示，当气温升高时，LST升高，并且冬季的增幅大于夏季。年度LE增长；H和冰厚度减少；冰块冻结日期延迟；并且分手的日期提前了。随温度升高而变化的变量变化在两个湖中从8月到12月相似，但是从12月到7月却有很大不同。并且分手的日期提前了。随温度升高而变化的变量变化在两个湖中从8月到12月相似，但是从12月到7月却有很大不同。并且分手的日期提前了。随温度升高而变化的变量变化在两个湖中从8月到12月相似，但是从12月到7月却有很大不同。