自适应光学终端已逐渐成为现代望远镜的标准配置，大气光学湍流的相关参数对自适应光学系统的设计、评估和运行都具有至关重要的影响。为了获得阿里地区的光学湍流参数，本项目利用MASS/DIMM与模型计算方法相结合的方法，获取阿里观测站的光学湍流参数。模型计算方法采用中尺度气象模式WRF和流体力学软件相结合，由中尺度气象模式提供观测站附近的气象参数，作为流体力学软件的初始条件和边界条件，提高计算结果水平方向的分辨率。MASS/DIMM提供1年以上的台站实测结果，同时为模型方法提供校准和验证。最终获得阿里观测站及其周边200km×200km范围1年以上的长期连续的大气光学湍流参数视宁度、Cn2廓线、等晕角、大气相干时间的资料。分析阿里地区的大气光学湍流统计特征、季节变化和不同的天气过程对其影响

Adaptive optics device has gradually became the standard equipment of a modern telescope,and optical turbulence related parameters have critical influence on the design，evaluation and operation of adaptive optics system. The method to obtain optical turbulence parameters at Ngari site is combined measurement by MASS/DIMM with modelling method. Modelling method combine meso-scale meteorological model WRF and computational fluid dynamic software, the former with a coarse resolution offer the initial and boundary condition to the latter which with a high resulition. More than 1 year optical turbulence results will obtain by MASS/DIMM measurement, and it also can be used to calibrate and verify modelling methods. At last, we will obtain statistical data of seeing, cn2 profile, isoplanatic angle and coherent time more than 1 year at Ngari site and the surrounding 200km×200km area. The statistics of optical turbulence at Ngari area and seasonal variation，impact by different weather conditions are also analysised.