中文摘要：

在西藏的高原的高高度的内陆湖的动力学是气候变化的敏感指示物。由于遥远和难存取，卫星测高法成为一条有效途径到获得湖级的变化的大规模、时间地连续的信息。CryoSat-2 测高法被期望解决更早的雷达高度表为监视大水身体仅仅是实际的当前的问题，当 ICESat 激光测高法为经期仅仅是可得到的时 20032009。在这研究，为 Namco 与的 CryoSat-2 测高法的比较在 situ，水级的数据建议 0.71 的一个高关联系数(P < 0.01 ) ，与 0.12m 的吝啬的错误和 0.18m 的 root-mean-square 错误。进一步， ICESat 和 CryoSat-2 测高法数据并且在 situ 的联合湖级的观察揭示 0.24 的快速的水级的上升

英文摘要：

The dynamics of high-altitude inland lakes in the Tibetan Plateau are sensitive indicators of climate change. Due to the remoteness and hard access, satellite altimetry becomes an effective approach to obtaining largescale and temporally continuous information of lake-level changes. The CryoSat-2 altimetry is expected to solve the current problem that earlier radar altimeters are only practical for monitoring large water bodies, while ICESat laser altimetry is available only for the period 2003-2009. In this study, the comparison of CryoSat-2 altimetry for Namco with in situ water-level data suggests a high cor- relation coefficient of 0.71 （P 〈 0.01）, with the mean error of -0.12 m and root-mean-square error of 0.18 m. Further, the combination of ICESat and CryoSat-2 altimetry data and in situ lake-level observations reveals a rapid water- level rise of 0.24 4- 0.04 m/year during 2003-2008 and then a slightly decreasing trend of -0.09 4- 0.04 m/year during 2009-2013. This study suggests that the CryoSat-2 altimetry has the potential of sustaining the fine observa- tions on Tibetan lakes, following the ICESat mission. Besides, the examination of four key climatic variables （temperature, precipitation, potential evapotranspiration, and relative humidity） during 1990-2013 indicates that the wetting climate over Namco Basin stagnated or even reversed around 2006, which may be tightly related to the slowing lake growth.