Summary/Abstract
This first volume of the Greater Yellowstone Climate Assessment (“the Assessment”) presents an in-depth summary of past, historical, and projected future changes to temperature, precipitation, and water in the GYA. It is intended as a basis for further research and discussion of the important impacts and adaptation and mitigation opportunities related to climate change in the region. This Assessment, like others done at the international, national, and state levels, draws on the best science available at the time of writing (see box). To provide geographic detail to the analysis we focus on the GYA and six major river basins within the GYA.