期刊名称：Geological Survey of Denmark and Greenland Bulletin
印刷版ISSN：1604-8156
出版年度：2015
卷号：33
页码：69-72
语种：English
出版社：De Nationale Geologiske Undersoegelser for Danmark og Groenland
摘要：Since the early 1980s, the Geological Survey of Denmark andGreenland (GEUS) glaciology group has developed automatic weather stations (AWSs) and operated them on the Greenland ice sheet and on local glaciers to support glaciologicalresearch and monitoring projects (e.g. Olesen & Braithwaite1989; Ahlstrøm et al. 2008). GEUS has also operated AWSsin connection with consultancy services in relation to miningand hydropower pre-feasibility studies (Colgan et al. 2015).Over the years, the design of the AWS has evolved, partly dueto technological advances and partly due to lessons learnedin the feld. At the same time, we have kept the initial goalin focus: long-term, year-round accurate recording of ice ablation, snow depth and the physical parameters that determine the energy budget of glacierised surfaces. GEUS has anextensive record operating AWSs in the harsh Arctic environment of the diverse ablation areas of the Greenland icesheet, glaciers and ice caps (Fig. 1). Te current GEUS-typeAWS (Fig. 2) records meteorological, surface and sub-surfacevariables, including accumulation and ablation, as well as forexample ice velocity. A large part of the data is transmittedby satellite near real-time to support ongoing applications,feld activities and the planning of maintenance visits. Tedata have been essential for assessing the impact of climatechange on land ice. Te data are also crucial for calibrationand validation of satellite-based observations and climatemodels (van As et al. 2014).
