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全球气候变化对青藏高原的水循环和水资源产生重要的影响,高海拔内陆湖变化成为气候变化的重要指示器.近年来,卫星测高技术成为青藏高原湖泊动态变化的有力观测手段.目前,ICESat测高数据已广泛运用于湖泊水位变化监测,而该卫星仅能提供2003~2009年期间的测高数据.因此,2010年发射的高精度雷达高度计卫星如CryoSat-2成为青藏高原湖泊水位持续监测的潜在重要数据源.本文以青藏高原纳木错(Namco)水位变化为例,基于2005~2013年的纳木错站实测水位数据,评价CryoSat-2卫星在湖面脚点(footprint)
Global climate change has an important impact on the water cycle and water resources of the Tibetan Plateau, and the change of inland lakes at high altitude has become an important indicator of climate change. In recent years, satellite altimetry has become a powerful observation tool for the dynamic changes of lakes in the Qinghai-Tibet Plateau. High data has been widely used to monitor changes in lake water level and the satellite can only provide altimeter data from 2003 to 2009. Therefore, a high-precision radar altimeter satellite such as CryoSat-2 launched in 2010 has become a continuous monitoring of the lake water level in the Qinghai-Tibet Plateau This paper takes the Namco water level change in the Qinghai-Tibet Plateau as an example, based on the measured water level data from Namucuo Station in 2005 ~ 2013 to evaluate the effect of CryoSat-2 satellite on the lake foot,