Open AccessProjections of Mountain Snowpack Loss for Wolverine Denning Elevations in the Rocky Mountains
Author(s) -
Barsugli Joseph J.,
Ray Andrea J.,
Livneh Ben,
Dewes Candida F.,
Heldmyer Aaron,
Rangwala Imtiaz,
Guinotte John M.,
Torbit Stephen
Publication year - 2020
Publication title -
earth's future
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.641
H-Index - 39
ISSN - 2328-4277
DOI - 10.1029/2020ef001537
Subject(s) - snowpack , snow , terrain , environmental science , climate change , physical geography , elevation (ballistics) , climatology , geography , geology , meteorology , oceanography , geometry , cartography , mathematics
Future reduction in mountain snowpack due to anthropogenic climate change poses a threat to many snow‐adapted species worldwide. Mountain topography exerts a strong control on snowpack not only due to elevation but also through the effect of slope and aspect on the surface energy balance. We develop high‐resolution projections of snowpack in order to provide improved, physically based estimates of the spatial distribution of future snowpack to inform species conservation efforts for the wolverine ( Gulo gulo ) in two study areas in the Rocky Mountains: one in Montana with known den sites and one in Colorado with recent wolverine activity and potential for reintroduction. Here we assess springtime snowpack loss in actual and potential denning areas under five future climate scenarios for the mid‐21st century. Snowpack in April and May is likely to persist into the mid‐21st century in the upper half of current denning elevations in all but the warmest future climate scenario, while large declines are projected for the lower half of the denning elevations. We gain new insight into the influence of topographical aspect on future snowpack and quantify the potential for enhanced snow persistence on north and east facing slopes under future scenarios that is only revealed in simulations where terrain slopes are resolved.