Contrasting lake ice responses to winter climate indicate future variability and trends on the Alaskan Arctic Coastal Plain

Strong winter warming has dominated recent patterns of climate change along the Arctic Coastal Plain (ACP) of northern Alaska. The full impact of arctic winters may be best manifest by freshwater ice growth and the extent to which abundant shallow ACP lakes freeze solid with bedfast ice by the end of winter. For example, winter conditions of 2016–17 produced record low extents of bedfast ice across the ACP. In addition to high air temperatures, the causes varied from deep snow accumulation on the Barrow Peninsula to high late season rainfall and lake levels farther east on the ACP. In contrast, the previous winter of 2015–16 was also warm, but low snowpack and high winds caused relatively thick lake ice to develop and corresponding high extents of bedfast ice on the ACP. This recent comparison of extreme variation in lake ice responses between two adjacent regions and years in the context of long-term climate and ice records highlights the complexity associated with weather conditions and climate change in the Arctic. Recent observations of maximum ice thickness (MIT) compared to simulated MIT from Weather Research and Forcing (Polar-WRF) model output show greater departure toward thinner ice than predicted by models, underscoring this uncertainty and the need for sustained observations. Lake ice thickness and the extent of bedfast ice not only indicate the impact of arctic winters, but also directly affect sublake permafrost, winter water supply for industry, and overwinter habitat availability. Therefore, tracking freshwater ice responses provides a comprehensive picture of winter, as well as summer, weather conditions and climate change with implications to broader landscape, ecosystem, and resource responses in the Arctic

Antarctic sea ice · Arctic · Arctic ice pack · Arctic sea ice decline · Climate change · Climatology · Context (archaeology · Cryosphere · Geography · Permafrost · Physical geography · Sea ice · Snow · Snowpack · Arctic and Antarctic ice dynamics · Climate change and permafrost · Cryospheric studies and observations · Environmental Science · Geology · Oceanography

• Increasing occurrence of heat waves in the terrestrial Arctic

  Open Access•Srdjan Dobričić, Simone Russo et al.•Environmental Research Letters•2019

  Incluir item

• Ecological Dynamics Across the Arctic Associated with Recent Climate Change

  Open Access•Eric Post, Mads C Forchhammer et al.•Science•2009

  Incluir item

• Circumpolar Arctic Tundra Vegetation Change Is Linked to Sea Ice Decline

  Uma S Bhatt, Donald A Walker et al.•Earth Interactions•2010

  Incluir item

• The evidence for shrub expansion in Northern Alaska and the Pan‐Arctic

  Open Access•Ken D Tape, KEN TAPE et al.•Global Change Biology•2006

  Incluir item

• Arctic sea ice decline

  Open Access•Julienne Strœve, M M Holland et al.•Geophysical Research Letters•2007

  Incluir item

• Role of Land-Surface Changes in Arctic Summer Warming

  Open Access•F Stuart Chapin, Matthew Sturm et al.•Science•2005

  Incluir item

• Processes and impacts of Arctic amplification

  Open Access•Mark C Serreze, Roger G Barry•Global and Planetary Change•2011

  Incluir item

• A Method To Determine Lake Depth and Water Availability on the North Slope of Alaska with Spaceborne Imaging Radar and Numerical Ice Growth Modelling

  Open Access•Martin O Jeffries, K Morris et al.•ARCTIC•1996

  Incluir item

• Shrinking sea ice, increasing snowfall and thinning lake ice

  Open Access•Ben Brock, Ben W Brock•Environmental Research Letters•2016

  Incluir item

• Arctic sea ice decline contributes to thinning lake ice trend in northern Alaska

  Open Access•V A Alexeev, Christopher D Arp et al.•Environmental Research Letters•2016

  Incluir item

• Changing seasonality of panarctic tundra vegetation in relationship to climatic variables

  Open Access•Uma S Bhatt, Donald A Walker et al.•Environmental Research Letters•2017

  Incluir item

• A lake-centric geospatial database to guide research and inform management decisions in an Arctic watershed in northern Alaska experiencing climate and land-use changes

  Open Access•Benjamin M Jones, Benjamin Jones et al.•AMBIO•2017

  Incluir item