Uncertainty is an inherent part of impact assessment (IA), and can vary in type and source. However, according to previous research, uncertainty is rarely explicitly acknowledged and handled in IA, indicating that it is a challenging issue in practice. This paper adds to the current research body a study of EIA in Greenland, which includes a document study of EIA reports as well as white papers and summaries from public hearings. The study findings are in line with previous results, finding a limited explicit acknowledgement of uncertainty, although uncertainty is indicated through implicit language use. The study also finds that various tools are applied, which could be used for handling uncertainty, including sensitivity analysis, monitoring and worst-case estimates. However, often these tools are not used systematically, and it is not transparent whether they are targeted at handling uncertainty. Regarding the examination of materials from hearing processes, there is little evidence that uncertainty is part of the discussions. These results initiate discussions of how choices of whether and how to acknowledge and handle uncertainty are made, and how consciously participants in the process make these choices.

不确定性是影响评估（IA）的固有部分，其类型和来源可能会有所不同。但是，根据先前的研究，不确定性很少在IA中得到明确承认和处理，这表明在实践中这是一个具有挑战性的问题。本文为目前的研究机构增加了对格陵兰岛环境影响评估的研究，其中包括对环境影响评估报告的文件研究以及白皮书和公开听证会的摘要。该研究结果与先前的结果一致，尽管对不确定性的暗示是通过隐式语言的使用，但发现了对不确定性的有限的明确承认。研究还发现，应用了各种工具，这些工具可用于处理不确定性，包括敏感性分析，监视和最坏情况估计。但是，这些工具常常没有被系统地使用，并且它们是否针对处理不确定性还不是透明的。关于听力过程中材料的检查，几乎没有证据表明不确定性是讨论的一部分。这些结果引发了关于如何做出是否以及如何确认和处理不确定性的选择以及过程中参与者如何有意识地做出这些选择的讨论。