Antarctic continent MAR 6-hourly data

Modèle Atmosphérique Régionale (MAR), was utilized Wille et al. (2019; Nature Geoscience). Each file contains snowfall, run off, surface temperature, sublimation, and melt at six-hour timesteps. A description of MAR from Wille et al. (2019) follows as... "Modèle Atmosphérique Régionale (MAR), a regional climate model (RCM) run at a 35 x 35 km2 horizontal resolution over the whole Antarctic continent with a 120 second time step and outputs every six hours. The MAR RCM includes the multi-layer snow model Crocus, which calculates meltwater at the surface when it reaches the melting point in combination with a surplus of energy (a deficit results in refreezing). The presence of meltwater alters the snow characteristics, for example the type and size of snow-grains and the albedo. Percolation through the snowpack is determined through a tipping bucket method based on snow density. We use 30 snow or ice layers of variable thickness from the surface to a 20 m depth. This version of MAR has been extensively tested over the Antarctic ice sheet25 and recently utilized by the Ice Sheet Mass Balance Inter-comparison Exercise (IMBIE) team." Agosta, C. et al. Estimation of the Antarctic surface mass balance using the regional climate model MAR (1979–2015) and identification of dominant processes. The Cryosphere 13, 281–296 (2019).区域大气模式（Modèle Atmosphérique Régionale，MAR）由Wille等人于2019年在《自然·地球科学》（*Nature Geoscience*）中使用。该数据集的每个文件均包含6小时时间步长下的降雪量、径流量、地表温度、升华量与融雪量。以下为Wille等人（2019）对MAR的详细描述："区域大气模式（MAR）是一款区域气候模型（regional climate model，RCM），在整个南极大陆以35×35 km²的水平分辨率运行，时间步长为120秒，每6小时输出一次模拟结果。MAR区域气候模式集成了多层雪层模型Crocus，该模型可在积雪达到熔点且伴随能量盈余时计算地表融水——若能量不足则会发生再冻结。融水的存在会改变积雪特性，例如雪粒的类型与尺寸以及反照率。积雪层内的水分渗透过程基于积雪密度，通过翻斗法确定。本研究采用了从地表至20米深度、厚度可变的30层雪/冰结构。该版本的MAR已在南极冰盖25上完成全面测试，近期还被冰盖质量平衡相互比较试验（Ice Sheet Mass Balance Inter-comparison Exercise，IMBIE）团队采用。" 该数据集相关的另一项研究为Agosta C.等人发表于《冰冻圈》（*The Cryosphere*）13卷第281–296页（2019年）的《利用区域气候模式MAR估算1979–2015年南极表面质量平衡及识别主导过程》。