GlacioBasis Zackenberg - Near surface climate - Relative humidity, ZAC_U

Relative humidity over ice Near surface climate:Near surface climate GlacioBasis Zackenberg:Since 2008, the GlacioBasis programme has been monitoring the glacier surface mass balance at the A.P. Olsen Ice Cap and its response to climate forcing. Greenland’s glaciers and Ice Caps are losing mass at a rate more than double of the Ice Sheet when adjusted for size, accounting for 14-20 % of the total sea level rise contribution from Greenland. As the glaciological component of a core WMO GCW CryoNet site and a contributor to the GTN-G through WGMS, the GlacioBasis datasets complement the ongoing monitoring based at Zackenberg, enable process-based understanding of physical processes driven by glacier melt water run-off in the downstream terrestrial and marine ecosystems, and can inform regional and global assessments under AMAP and IPCC. GlacioBasis operates the year-round automatic monitoring of A.P. Olsen Ice Cap near-surface weather at three stations, a network of ablation stakes covering the entire altitude range, and geophysical survey campaigns on the ground (radar snow depth) and airborne (surface elevation from lidar, ice thickness from radar). GlacioBasis data collection is adaptively updated to support research in processes emerging as key sources of nonlinearity in the cryosphere, including melt water retention and albedo feedbacks. As a representative Northeast Greenland Ice Cap, A.P. Olsen observations delivered by GlacioBasis are available to the national and international remote sensing and climate modelling communities for calibration, validation and upscaling purposes.冰面相对湿度、近地表气候：格劳西贝西斯（GlacioBasis）扎科恩贝格（Zackenberg）监测项目：自2008年起，格劳西贝西斯（GlacioBasis）项目持续对A.P.奥尔森冰盖（A.P. Olsen Ice Cap）的冰川地表物质平衡及其对气候强迫的响应进行监测。经规模校正后，格陵兰冰川与冰盖的物质损失速率是格陵兰冰盖的两倍以上，其对全球海平面上升的贡献占格陵兰地区总贡献的14%至20%。作为世界气象组织（World Meteorological Organization, WMO）全球冰冻圈观测网（Global Cryosphere Watch, GCW）CryoNet核心站点的冰川学组成单元，并通过世界冰川监测服务（World Glacier Monitoring Service, WGMS）成为全球冰川陆地网络（Global Terrestrial Network for Glaciers, GTN-G）的贡献成员，格劳西贝西斯数据集补充了扎科恩贝格地区的现有监测工作，助力学界基于过程理解冰川融水径流驱动的下游陆地与海洋生态系统物理过程，并可为北极监测与评估计划（Arctic Monitoring and Assessment Programme, AMAP）及政府间气候变化专门委员会（Intergovernmental Panel on Climate Change, IPCC）开展的区域与全球评估提供参考依据。格劳西贝西斯项目在三处站点开展A.P.奥尔森冰盖近地表气象的全年自动监测，布设覆盖全海拔范围的消融桩监测网，并开展地面（雷达测雪深）与航空（激光雷达测地表高程、雷达测冰厚）地球物理勘测工作。格劳西贝西斯项目的数据采集工作会进行自适应更新，以支撑针对冰冻圈关键非线性过程的研究，包括融水留存与反照率反馈机制。作为格陵兰东北部具有代表性的冰盖，格劳西贝西斯项目获取的A.P.奥尔森冰盖观测数据，可面向国内外遥感与气候建模学界，用于模型校准、验证与尺度升级工作。