Environments along the coast of Greenland are rapidly changing under the influence of a warming climate in the Arctic. To better understand the changes in the coastal environments, we performed researches in the Qaanaaq region in northwestern Greenland as a part of the ArCS (Arctic Challenge for Sustainability) Project. Mass loss of ice caps and marine-terminating outlet glaciers were quantified by field and satellite observations. Measurements and sampling in fjords revealed the important role of glacial meltwater discharge in marine ecosystems. Flooding of a glacial stream in Qaanaaq and landslides in a nearby settlement were investigated to identify the drivers of the incidents. Our study observed rapid changes in the coastal environments, and their critical impact on the society in Qaanaaq. We organized workshops with the residents to absorb local and indigenous knowledge, as well as to share the results and data obtained in the project. Continuous effort towards obtaining long-term observations requiring involvement of local communities is crucial to contribute to a sustainable future in Greenland.

在北极气候变暖的影响下，格陵兰岛沿岸的环境正在迅速变化。为了更好地了解沿海环境的变化，作为ArCS（北极可持续性挑战）项目的一部分，我们在格陵兰西北部的Qaanaaq地区进行了研究。冰盖和终止于海洋的出口冰川的质量损失通过野外和卫星观测进行量化。在峡湾进行的测量和采样揭示了冰川融水排放在海洋生态系统中的重要作用。调查了Qaanaaq冰川河的洪水和附近定居点的滑坡，以查明事故的起因。我们的研究观察到沿海环境的快速变化及其对卡纳阿克社会的重要影响。我们与居民组织了讲习班，以吸收当地和土著知识，并分享项目中获得的结果和数据。持续努力获取需要当地社区参与的长期观测资料，对于为格陵兰岛的可持续未来做出贡献至关重要。