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Filters Date Range Past year (2) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types Map Service (2) OGC WFS Layer (2) OGC WMS Layer (2) OGC WMS Service (2) Contacts Christopher D. Arp, PhD Glen Liston, PhD LCC Network Data Steward Anna Liljedahl, PhD Arctic Field Office Ben Gaglioti Benjamin M. Jones Categories Data (2) Publication (2) Tag Types project (2) theme (1) ISO 19115 Topic Categories (2) ISO 19115 Topic Category (2) LCC End User Type (2) Harvest Set (2) Resource Type (2) Status (2) Tag Schemes http://gcmd.nasa.gov/learn/keywords.html (2) https://earthdata.nasa.gov/gcmd-forum (2) ISO 19115 Topic Categories (2) ISO 19115 Topic Category (2) https://www.sciencebase.gov/vocab/vocabulary/54760ef9e4b0f62cb5dc41a0 (2) View Results as: JSON ATOM CSV

Threshold sensitivity of shallow Arctic lakes and sublake permafrost to changing winter climate Interactions and feedbacks between abundant surface waters and permafrost fundamentally shapelowland Arctic landscapes. Sublake permafrost is maintained when the maximum ice thickness (MIT) exceedslake depth and mean annual bed temperatures (MABTs) remain below freezing. However, decliningMIT since the1970s is likely causing talik development below shallow lakes. Here we show high-temperature sensitivity towinter ice growth at the water-sediment interface of shallow lakes based on year-round lake sensor data.Empirical model experiments suggest that shallow (1m depth) lakes have warmed substantially over the last30years (2.4°C), withMABT above freezing5 of the last 7years.This is incomparison to slower ratesofwarming... Categories: Data, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Academics & scientific researchers, Arctic Landscape Conservation Cooperative data.gov, ECOSYSTEM FUNCTIONS, ECOSYSTEM FUNCTIONS, Federal resource managers, All tags... LAKE ICE, LAKE ICE, LAKES, LAKES, LCC Network Science Catalog, PERMAFROST, PERMAFROST, Publication, RIVER ICE, RIVER ICE, WETLANDS, WETLANDS, climatologyMeteorologyAtmosphere, climatologyMeteorologyAtmosphere, completed, geoscientificInformation, geoscientificInformation, inlandWaters, inlandWaters, Fewer tags Modeling snowdrift habitat for polar bear dens Throughout the Arctic most pregnant polar bears (Ursus maritimus) construct maternity dens in seasonal snowdrifts that form in wind-shadowed areas. We developed and verified a spatial snowdrift polar bearden habitat model (SnowDens-3D) that predicts snowdrift locations and depths along Alaska’s Beaufort Sea coast. SnowDens-3D integrated snow physics, weather data, and a high-resolution digital elevation model (DEM) to produce predictions of the timing, distribution, and growth of snowdrifts suitable for polar bear dens. SnowDens-3D assimilated 18 winters (1995 through 2012) of observed daily meteorological data and a 2.5 m grid-increment DEM covering 337.5 km2 of the Beaufort Sea coast, and described the snowdrift... Categories: Data, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ANIMAL ECOLOGY AND BEHAVIOR, ANIMAL ECOLOGY AND BEHAVIOR, ANIMAL MANAGEMENT SYSTEMS, ANIMAL MANAGEMENT SYSTEMS, Academics & scientific researchers, All tags... Arctic Landscape Conservation Cooperative data.gov, BEARS, BEARS, Federal resource managers, LCC Network Science Catalog, Publication, REGULATORY MODELS, REGULATORY MODELS, SNOW, SNOW, SNOW COVER, SNOW COVER, SNOW DEPTH, SNOW DEPTH, SNOW DEPTH, SNOW DEPTH, State agencies, TOPOGRAPHY, TOPOGRAPHY, WIND SPEED/WIND DIRECTION, WIND SPEED/WIND DIRECTION, biota, biota, completed, elevation, elevation, environment, environment, geoscientificInformation, geoscientificInformation, Fewer tags