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In order to allow for a comparison across years we visually digitized landcover of Poplar Island from a single image per year at a 1:1000 spatial extent with a minimum mapping unit of 300 square meters (no minimum dimensions aside from area). Images used to assign landcover were provided by the U.S. Army Corps of Engineers and were captured between July and October of their respective years. All images were 1 foot resolution.
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LCC funding allowed completion of this BLM initiative to develop a North Slope-wide cover type map and create a crosswalk that integrates all component cover type maps that comprise the larger overall North Slope cover type map.This map is the outcome of a multi-year project to produce a moderate resolution landcover base map for the North Slope of Alaska to serve as a primary base layer for long-term science and planning activities on the North Slope. New Landsat Thematic Mapper (TM) 30 meter resolution landcover maps were produced for the far western arctic, and for the area between the National Petroleum Reserve - Alaska (NPRA) and Arctic National Wildlife Refuge. In the NPRA, an existing land cover map from...
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Information on the nature and distribution of permafrost is critical to assessing the response of Arctic ecosystems to climate change, because thawing permafrost under a warming climate will cause thaw settlement and affect micro-topography, surface water redistribution and groundwater movement, soil carbon balance, trace gas emissions, vegetation changes, and habitat use. While a small-scale regional permafrost map is available, as well as information from numerous site-specific large-scale mapping projects, landscape-level mapping of permafrost characteristics is needed for regional modeling and climate impact assessments. The project addresses this need by: (1) compiling existing soil/permafrost data from available...
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These GIS grids were produced from NOAA and NRCC precipitation frequency estimates for North America based on precipitation data collected from 1816 to 2014. The grids provide estimated rainfall data for 2-, 5-, 10-, 25-, 50-, 100-, 20-0, and 500-year recurrence periods for a 24-hour duration. Grid value units are inches * 1000.
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The most comprehensive historical aerial imagery of Alaska available to the public was collected as partof the Alaska High-Altitude Aerial Photography Program (AHAP) during 1978-1986. Recent studiesexamining coastline erosion have clearly demonstrated that the AHAP photographs are a valuablebaseline for detecting and quantifying change that occurred in Alaska in recent decades. Unfortunately,these data have been greatly underutilized due to challenges associated with orthorectifying the rawimagery and making it ready for users of Geographic Information Systems (GIS). By partnering with theAlaska Satellite Facility (ASF) at the University of Alaska Fairbanks the ALCC has made high-qualityAHAP orthomosaics of the...
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The Arctic LCC and National Park Service has partnered together to complete a ShoreZone imagining and mapping project for the entire coastline, lagoons inclusive, from Point Hope to Wales in Northwestern Alaska. The ShoreZone Mapping System uses oblique aerial imagery and field data from ShoreStations to classify coastline habitats based on geological and biological attributes. ShoreZone products are made available to the public through the National Oceanic and Atmospheric Administration (NOAA) National Marine Fisheries Website.
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The Arctic LCC created the Threatened Eider Geodatabase to serve as a repository for threatened eider distribution information. This database is intended to be a qualitative “first look” at where these two species of eider have been recorded and where surveys have been conducted. This dataset is intended for general planning and mapping purposes, it should NOT be used for deriving density estimates. Users are reminded that these data do not represent all locations within the geographic scope of this database that may be occupied by threatened eiders..
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This project used historical climate records for Alaska and Western Canada to identify patterns in temperature and precipitation reflecting the distribution of biomes seen across this region today. These climate-biome models used downscaled climate data to help identify areas which were most vulnerable to change, and areas of “refugia” where the temperature and precipitation conditions will be most similar to what they are today. The results may help managers, landscape planners, conservationists and others; understand how dramatically the temperature and precipitation patterns are expected to change.
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Combined storage (palustrine, riverine, or lacustrine) data from U.S. Fish and Wildlife Service National Wetlands Inventory (NWI) - https://www.fws.gov/wetlands/, Canadian National Hydrographic Network (NHN) - http://www.snb.ca/geonb1/e/dc/catalogue-E.asp, and North American Land Change Monitoring System Landcover - https://www.mrlc.gov/data. Grid values equal to 1 are storage areas and grid values equal to 0 are NoData areas.
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Federal land managers, non-governmental organizations, and industry have been developing ecological land classifications at regional and landscape-level for Alaska to aid in ecosystem management. An ecoregion map that covers the entire state was produced by Nowacki et al. (2002). At the landscape level, ecological subsection mapping has been done for all National Park Service (NPS) and Forest Service lands in Alaska. In northern Alaska, a portion of the North Slope has been mapped at the ecological subsection level by industry (Jorgenson et al. 2003). In the Brooks Range, similar mapping has been done for National Parks and Preserves at Cape Krusenstern (Swanson 2001), Noatak (Jorgenson et al. 2002), and Gates of...
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Water availability, distribution, quality and quantity are critical habitat elements for fish and other water-dependent species. Furthermore, the availability of water is also a pre-requisite for a number of human activities. The density of weather and hydrology observation sites on the North Slope is orders of magnitude less than in other parts of the U.S., making it difficult to document hydrologic trends and develop accurate predictive models where water is a key input. The information that does exist is scattered among many entities, and varies in format. This multi-year data rescue effort project brought together scarce and scattered hydrology data sets, including high-priority datasets held by the Bureau of...
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Over the last 3 years, high-resolution LiDAR elevation data has been acquired for much of the northern coast of Alaska in support of the USGS Coastal and Marine Geology Program’s National Assessment of Shoreline Change project. Because of funding limitations, LiDAR data were not collected over most river deltas and embayments. Subsequent discussions with scientists and managers from both public agencies and private organizations indicated a need and desire to fill the gaps in the coastal elevation data set, specifically over the low-lying deltas and estuaries that provide important habitat for migratory birds and other wildlife. The Arctic LCC provided support to help cover costs associated with acquiring and processing...


    map background search result map search result map Understanding Arctic Ecosystems: Ecological Mapping and Mapping Field Plot Database for the North Slope Threatened Eider Geodatabase for Northern Alaska Hydroclimatological Data Rescue, Data Inventory, Network Analysis, and Data Distribution Permafrost Database Development, Characterization, and Mapping for Northern Alaska WEAR ShoreZone and ShoreStation Surveys NPS Historical Orthomosaic, Digital Surface Model, and Shoreline Position for the Northern Alaska Coastline North Slope Alaska Admiralty Bay LiDAR Predicting Future Potential Biomes for Alaska North Slope Land Cover Poplar Island Digitizing Wetland Storage Area in Maine Watersheds The frequency of extreme rainfall intensities over a 24-hour duration Poplar Island Digitizing North Slope Alaska Admiralty Bay LiDAR WEAR ShoreZone and ShoreStation Surveys NPS The frequency of extreme rainfall intensities over a 24-hour duration Wetland Storage Area in Maine Watersheds Understanding Arctic Ecosystems: Ecological Mapping and Mapping Field Plot Database for the North Slope Threatened Eider Geodatabase for Northern Alaska North Slope Land Cover Historical Orthomosaic, Digital Surface Model, and Shoreline Position for the Northern Alaska Coastline Permafrost Database Development, Characterization, and Mapping for Northern Alaska Hydroclimatological Data Rescue, Data Inventory, Network Analysis, and Data Distribution Predicting Future Potential Biomes for Alaska