Marcot, Bruce G. (ORCID: 0000-0002-3667-7481) Jorgenson, M. Torre (ORCID: 0000-0002-9834-8851) DeGange, Anthony R. 20140521 ASCII XML, digital photographic images Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013 ver 1.1, March 2023 Anchorage, Alaska U.S. Geological Survey, Alaska Science Center Suggested Citation: Marcot, B.G., Jorgenson, M.T., DeGange, A.R., 2014, Low-altitude photographic transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013 (ver 1.1, March 2023): U.S. Geological Survey data release, https://doi.org/10.5066/P9KFIRWQ https://doi.org/10.5066/P9KFIRWQ This dataset contains GPS waypoint logs and browse maps of the aircraft flight paths used during low altitude photo survey transects in northwest Alaska, July 2013. Three flight transects were conducted from small aircraft over the National Park Service's Arctic Network (ARCN; Bering Land Bridge National Preserve, Cape Krusenstern National Monument, Gates of the Arctic National Park and Preserve, Kobuk Valley National Park, and Noatak National Preserve) and the U.S. Fish and Wildlife Service's Selawik National Wildlife Refuge. Three aerial photo transects were conducted in July 2013, to provide photos of current conditions and prevalence of land cover types as a baseline for measuring future change, and to complement the existing grid-based sample photography of the region (Swanson 2013). Extensive details of all aspects of the aerial photographic, video, and GPS data collection and processing are provided in Marcot et al. 2014. The study area included five units of the National Park Service's Arctic Network (ACRN; Bering Land Bridge National Preserve, Cape Krusenstern National Monument, Gates of the Arctic National Park and Preserve, Kobuk Valley National Park, and Noatak National Preserve), the adjacent area of U.S. Fish and Wildlife Service's Selawik National Wildlife Refuge, and a 10-km buffer around all of these administrative units, totaling 162,868 km2 in an area spanning roughly 500 km east to west and 300 km north to south. This is also the study area for the USGS Wildlife Potential Habitat Forecasting Framework Project (WildCast) that projects effects of climate change on future land cover and wildlife habitat (DeGange et al. 2013) 20130716 20130718 observed Complete None planned -169.22 -149.05 68.87 64.78 USGS Metadata Identifier USGS:ASC10 ISO 19115 Topic Category Biota Environment ImageryBaseMapsEarthCover GeoscientificInformation InlandWaters NASA GCMD Earth Science Keyword Thesaurus Land Surface Frozen Ground Geomorphic Landforms/Processes Landscape Land Use/Land Cover USGS Thesaurus Image Analysis Aerial Photography Videography Image Collections Geography Climate Change Land Use and Land Cover Vegetation Tundra Ecosystems Coastal Ecosystems None Photogrammetry Arctic Network Low Altitude Air Photo Low Altitude Video Northwest Alaska Land Cover Ecotypes USGS Geographic Names Information System (GNIS) Alaska Northwest Arctic Borough None Bering Land Bridge National Preserve Selawik National Wildlife Refuge Cape Krusenstern National Monument Gates of the Arctic National Park Gates of the Arctic National Preserve Kobuk Valley National Park Noatak National Preserve No access constraints. No use constraints. We request that the suggested citation of this USGS data release be included in any publications that reference or utilize these data. U.S. Geological Survey, Alaska Science Center Mailing and Physical

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Anchorage Alaska 99508 USA 907-786-7000 gs-ak_asc_datamanagers@usgs.gov USGS Alaska Science Center, National Park Service, US Forest Service Pacific Northwest Research Station Marcot, B.G. Jorgenson, M.T. DeGange, A.R. 2014 document U.S. Geological Survey Data Series 846 online U.S. Geological Survey Marcot, B.G., Jorgenson, M.T., DeGange, A.R., 2014. Low-altitude photographic transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013: U.S. Geological Survey Data Series 846, https://doi.org/10.3133/ds846 https://doi.org/10.3133/ds846 DeGange, A. Marcot, B.G. Lawler, J. Jorgenson, T. Winfree, R. 2013 document Alaska Park Science 12(2):66–73 online National Park Service DeGange, A., Marcot, B.G., Lawler, J., Jorgenson, T., Winfree, R., 2013, Predicting the effects of climate change on ecosystems and wildlife habitat in northwest Alaska—Results of the WildCast project: Alaska Park Science 12(2):66–73, https://www.nps.gov/articles/aps-v12-i2-c12.htm https://www.nps.gov/articles/aps-v12-i2-c12.htm Marcot, B.G. Jorgenson, M.T. Lawler, J.P. Handel, C.M. DeGange, A.R. 2015 journal article Climatic Change 130:145–154 online SpringerNature Marcot, B.G., Jorgenson, M.T., Lawler, J.P., Handel, C.M., DeGange, A.R., 2015. Projected changes in wildlife habitats in Arctic natural areas of northwest Alaska. Climatic Change 130:145–154, https://doi.org/10.1007/s10584-015-1354-x https://doi.org/10.1007/s10584-015-1354-x GPS waypoints were recorded automatically at five second intervals using an i-gotU GT-120 GPS waypoint data logger mounted on each airplane's dashboard and a Garmin Oregon 550t hand-held unit (published horizontal accuracy less than 10 m). Attribute values fall within expected ranges. Data are complete. No data were omitted. GPS waypoints were recorded automatically at five second intervals using an i-gotU GT-120 GPS waypoint data logger mounted on each airplane's dashboard and a Garmin Oregon 550t hand-held unit (published horizontal accuracy less than 10 m). Marcot, B.G. Jorgenson, M.T. DeGange, A.R. 2014 document U.S. Geological Survey Data Series 846 online U.S. Geological Survey Marcot, B.G., Jorgenson, M.T., DeGange, A.R., 2014. Low-altitude photographic transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013: U.S. Geological Survey Data Series 846, https://doi.org/10.3133/ds846 https://doi.org/10.3133/ds846 Publication 2014 publication date Marcot et al. 2014 Provides extensive details of all aspects of the aerial photographic, video, and GPS data collection and processing. Swanson, D.K. 2013 document National Park Service, Natural Resource Technical Report NPS/ARCN/NRTR—2013/668 online 2010: National Park Service Swanson, D.K., 2013, Three decades of landscape change in Alaska's Arctic National Parks—Analysis of aerial photographs, c. 1980–2010: National Park Service, Natural Resource Technical Report NPS/ARCN/NRTR—2013/668, 38 p. Published report archived by U.S. National Park Service Catalog (IRMA Data Store) https://irma.nps.gov/DataStore [reference code: 2192701] https://irma.nps.gov/DataStore/Reference/Profile/2192701 Publication 2013 publication date Swanson 2013 Describes existing grid-based sample photography of the region. DeGange, A. Marcot, B.G. Lawler, J. Jorgenson, T. Winfree, R. 2013 document Alaska Park Science 12(2):66–73 online National Park Service DeGange, A., Marcot, B.G., Lawler, J., Jorgenson, T., Winfree, R., 2013, Predicting the effects of climate change on ecosystems and wildlife habitat in northwest Alaska—Results of the WildCast project: Alaska Park Science 12(2):66–73 https://www.nps.gov/articles/aps-v12-i2-c12.htm Publication 2013 publication date DeGange et al. 2013 Provides information about the Wildlife Potential habitat Forecasting Framework (Wildcast) project. Marcot, B.G. Jorgenson, M.T. DeGange, A.R. 2016 website Anchorage, Alaska U.S. Geological Survey, Alaska Science Center Study information website https://www.usgs.gov/centers/asc/science/wildlife-potential-habitat-forecasting-framework-wildcast website 2016 publication date Marcot et al. 2016 Provides information about the Wildlife Potential habitat Forecasting Framework (Wildcast) project. Extensive details of all aspects of the aerial photographic, video, and GPS data collection and processing are provided in Marcot et al. 2014. Unknown GPS waypoints were recorded automatically at five second intervals using an i-gotU GT-120 GPS waypoint data logger mounted on each airplane's dashboard and a Garmin Oregon 550t hand-held unit for backup GPS waypoint data. Unknown Raw waypoint data logger .GPX files imported into "@trip PC" software for locating each flight route. Unknown GPS waypoint tracks were exported into Google Earth and saved in JPG format. Unknown Browse maps were generated in Google earth of the transect routes and saved in JPG format. Unknown Point 0.000001 0.000001 Decimal degrees World Geodetic System of 1984 (WGS84) World Geodetic System of 1984 (WGS84) 6378137 298.257223563 National Geodetic Vertical Datum of 1929 1.00 meters Implicit coordinate flightPath_[park/refuge]_[GPS].gpx GPS waypoint files containing waypoints recorded automatically at five second intervals using an i-gotU GT-120 GPS mounted on each airplane's dashboard and a Garmin Oregon 550t hand-held GPS unit. Presented in GPS Exchange (GPX) format -- a standard XML schema for GPS data; waypoints can be read with an ASCII text editor. File naming convention: flightPath_[park/refuge]_[GPS].gpx Where: [park/refuge] = location name of the flight transect; [GPS] = make and model of the GPS used. Author defined Header information The first several lines, ending with "trkseg", providing information specific to the GPS unit and the GPS track. GPX schema Information specific to the GPS unit and tracking. trkpt lat Latitude of the GPS waypoint, in decimal degrees (WGS84). GPX schema Latitude of the GPS waypoint, in decimal degrees (WGS84). trkpt lon Longitude of the GPS waypoint, in decimal degrees (WGS84). GPX schema Longitude of the GPS waypoint, in decimal degrees (WGS84). ele Elevation of the GPS waypoint, in meters; altitude above sea level (ASL) as determined by the GPS. Note: Error can be up to +/- 15 m depending on overhead cloud cover and access to GPS satellite signals. GPX schema Elevation of the GPS waypoint, in meters. time Date and time stamp of the GPS waypoint, in UTC (YYYY-MM-DDThh:mm:ssZ). GPX schema Date and time stamp of the GPS waypoint, in UTC (YYYY-MM-DDThh:mm:ssZ). speed Speed of GPS unit since the previous waypoint as determined by the GPS, in meters per second. Speed was not determined by the Garmin Oregon 550t GPS units and the XML tag is not included in those files. GPX schema Speed of GPS unit since previous waypoint, in meters per second. flightPath_browseMaps Folders (with sub-folders) providing browse maps of: (1) the survey flight track routes overlaid on a GoogleEarth landcover and (2) annotated sample images from the survey for illustrative purposes. Presented in JPG format. These maps and images are also included in Marcot et al. 2014, with more detailed descriptions and explanations. Author defined U.S. Geological Survey USGS ScienceBase Team Mailing and Physical

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Denver Colorado 80225 USA 1-888-275-8747 sciencebase@usgs.gov The U.S. Geological Survey, Alaska Science Center is the authoritative source of these data, distributed by ScienceBase (a USGS Trusted Digital Repository). Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data for other purposes or on all computer systems, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. GPX, JPG GPS waypoint data in GPX format; browse map images in JPG format; FGDC metadata in XML and HTML formats. https://doi.org/10.5066/P9KFIRWQ None 20241008 U.S. Geological Survey, Alaska Science Center Mailing and Physical

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Anchorage Alaska 99508 USA 907-786-7000 gs-ak_asc_datamanagers@usgs.gov FGDC Content Standard for Digital Geospatial Metadata (CSDGM) FGDC-STD-001-1998