南极冰盖10m深度处粒雪温度空间分布

来源 :中国科学:地球科学 | 被引量 : 0次 | 上传用户:guanxinpp
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系统收集整理目前已有的南极冰盖粒雪温度资料,经过数据质量评估建立了南极冰盖10m深度处粒雪温度(近似等于年平均气温)数据库.根据主要分冰岭和高分辨数字高程模型(DEM)对南极冰盖进行分区,以该数据库为基础,利用各分区内年平均气温的空间变化与经度、纬度和高度的内在关系,建立了南极冰盖气温与经纬度和海拔高度的定量关系模型,并结合大气环流、微地形等气温空间变化影响因素,生成了10km分辨率南极冰盖10m深度处粒雪温度栅格图.该图反映了气温随经纬度海拔高度的地带性特征,同时体现了气温在空间上的微观变化,其结果可用作南极冰盖数值模式的气温边界条件,可用于与空间变化有关的研究,以及大气环流模式输出结果、卫星遥感反演数据等验证. The system collects and sorts the existing data of the snow temperature in the Antarctic ice sheet, and establishes the database of the snow temperature (approximately equal to the annual average temperature) of the snow in the Antarctic ice sheet at a depth of 10 m after data quality assessment.According to the main ice-ridge and high resolution digital elevation model (DEM), Antarctic ice sheet was partitioned. Based on this database, the relationship between temperature and longitude, latitude and altitude in the Antarctic ice sheet was established by using the inherent relationship between spatial variation of annual mean temperature and longitude, latitude and altitude Model, and combined with the influencing factors of atmospheric circulation such as atmospheric circulation and microtopography, a grid of snow temperature at a depth of 10 m with a resolution of 10 km is generated at a depth of 10 m, which reflects the zonal characteristics of temperature with latitude and longitude at the same time The microscopic change of temperature in space can be used as the temperature boundary condition for the Antarctic ice sheet numerical model. It can be used for the study related to the spatial change, as well as the output of the general circulation model and the inversion data of satellite remote sensing.
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