Li H. Erikson Ann E. Gibbs Bruce M. Richmond Benjamin M. Jones Curt D. Storlazzi Karin A. Ohman 20201207 comma-delimited text data release DOI:10.5066/P9LGYO2Q Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey https://doi.org/10.5066/P9LGYO2Q https://www.sciencebase.gov/catalog/item/5ee2b52582ce3bd58d7e1720 Li H. Erikson Ann E. Gibbs Bruce M. Richmond Benjamin M. Jones Curt D. Storlazzi Karin A. Ohman 2020 data release DOI:10.5066/P9LGYO2Q Pacific Coastal and Marine Science Center, Santa Cruz, CA U.S. Geological Survey https://doi.org/10.5066/P9LGYO2Q Thermokarst lake water temperature and salinity data were collected in 2011 in the vicinity of Arey Lagoon and Barter Island, Alaska. Pond temperatures and salinity (conductivity) were measured along two transects traversing across a wet sedge area. A hand-held YSI 556 MPS (plus or minus 0.5 percent accuracy) with a cable-attached instrument probe was placed in 10-15 cm of water within 1 m of each of the pond edges and allowed to equilibrate, and readings were recorded manually. In all, 35 ponds were sampled over a distance of approximately 1.5 km. Data were obtained to provide inputs and validation data for a numerical model, and additionally to provide baseline environmental data previously not available. Additional information about the field activity from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=ID411AR Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. 20110712 ground condition at time data were collected Complete None planned -143.715250 -143.692120 70.104650 70.098760 ISO 19115 Topic Category geoscientificInformation USGS Thesaurus salinity geospatial datasets Marine Realms Information Bank (MRIB) keywords numerical modeling flooding Data Categories for Marine Planning predictions None U.S. Geological Survey USGS Coastal and Marine Hazards and Resources Program CMHRP Pacific Coastal and Marine Science Center PCMSC thermokarst lakes temperature USGS Metadata Identifier USGS:5ee2b52582ce3bd58d7e1720 Geographic Names Information System (GNIS) Arctic National Wildlife Refuge Arctic Ocean Barter Island Arey Island Arey Lagoon North Slope State of Alaska None USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

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Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov https://www.sciencebase.gov/catalog/file/get/5ee2b52582ce3bd58d7e1720?name=BTI_2011ThermokarstTempSalinity_SampleLocationMap.jpg&allowOpen=true Map of thermokarst lake temperature and salinity measurement locations. JPEG Arctic Landscape Conservation Cooperative (ALCC), U.S. Fish & Wildlife Service Data were post-processed using Ashtec, Trimble, Humminbird 898C, and MATLAB on a PC equipped with the Windows 7 operating system. Li H. Erikson Ann E. Gibbs Bruce M. Richmond Curt D. Storlazzi Benjamin M. Jones Karin A. Ohman 2020 Erikson, L.H., Gibbs, A.E., Richmond, B.M., Storlazzi, C.D., Jones, B.M., and Ohman, K.A., 2020, Changing storm conditions in response to projected 21st century climate change and the potential impact on an arctic barrier island–lagoon system—A pilot study for Arey Island and Lagoon, eastern Arctic Alaska: U.S. Geological Survey Open-File report 2020-1142 https://doi.org/10.3133/ofr20201142 No formal accuracy assessment was performed. Standard operating procedures were used to collect all data and measurements are within the expected range. Instruments used to measure salinity, and temperature. Accuracies of pond temperatures and salinity (conductivity) are approximately ±0.5 percent of measurements, per manufacturer (YSI) specifications. No formal logical accuracy tests were conducted. Data has been checked for duplications and omissions. Missing data have been filled with NaN values. Where data were not collected a value of n/a value is used. Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. A formal accuracy assessment of the horizontal positional information in the data set has not been conducted. Temperature and salinity sample locations were obtained with hand-held GPS units and are estimated to be accurate to within 4 meters. Thermokarst lake water temperature and salinity data were collected in 2011 in the vicinity of Arey Lagoon and Barter Island, Alaska. Pond temperatures and salinity (conductivity) were measured along two transects traversing across a wet sedge area. A hand-held YSI 556 MPS (plus or minus 0.5 percent accuracy) with a cable-attached instrument probe was placed in 10-15 cm of water within 1 m of each of the pond edges and allowed to equilibrate, and readings were recorded manually. In all, 35 ponds were sampled over a distance of approximately 1.5 km. 20111020 Performed minor edits to the metadata to correct typos. No data were changed 20211013 U.S. Geological Survey Susan A. Cochran Geologist Mailing and Physical

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Santa Cruz CA 95060 831-460-7545 scochran@usgs.gov Point Point 39 0.00001 0.00001 Decimal degrees WGS84 WGS84 6378137.0 298.257223563 BTI_2011ThermokarstTempSalinity_data.csv Temperature and salinity measurements in thermokarst lakes Producer defined Longitude Longitude coordinate Producer defined -143.71525 -143.69212 Decimal degrees 0.00001 Latitude Latitude coordinate Producer defined 70.09876 70.10465 Decimal degrees 0.00001 Temp_degC Temperature Producer defined 8.3 16.6 Degree C 0.1 Cond_mS/cm Conductivity Producer defined 2.35 46.68 mS/cm 0.01 The first line of the csv file is a header line. U.S. Geological Survey U.S. Geological Survey - ScienceBase mailing and physical

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Denver CO 80225 1-888-275-8747 sciencebase@usgs.gov These data are available in csv format contained in a single zip file, which also includes CSDGM FGDC compliant metadata and a sample location map. 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 (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. comma-delimited text zip file contains the data, metadata, and a sample location map. No compression applied 0.02 https://www.sciencebase.gov/catalog/file/get/5ee2b52582ce3bd58d7e1720?name=BTI_2011ThermokarstTempSalinity_data.csv https://www.sciencebase.gov/catalog/item/5ee2b52582ce3bd58d7e1720 https://doi.org/10.5066/P9LGYO2Q Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the data file only. The second link points to a landing page from which the zipped file of data, metadata, and a sample location map can be downloaded. The third link points to a landing page for the entire data release. None. These data can be viewed with any text reading software. 20211013 U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

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Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998