ALBEDO_BOX English utf8 dataset McMurdo Dry Valleys LTER http://mcmlter.org/ 2019-07-12 ISO 19115-2 Geographic Information - North American Profile Metadata - Data with Biological Extensions ISO 19115-2:2009(E) Landscape Albedo in Taylor Valley, Antarctica from 2015 to 2019 2019-07-12 publication Anna Bergstrom Boise State University https://www.boisestate.edu/ annabergstrom@boisestate.edu pointOfContact Michael Gooseff University of Colorado Boulder http://www.colorado.edu/ michael.gooseff@colorado.edu http://goosefflab.weebly.com pointOfContact documentDigital This data package contains reflectance data and associated aerial images collected using a helicopter-suspended "albedo box," in which a shortwave radiometer and camera where mounted facing downward. The purpose of this study was to measure how surface reflectance varies within and across landscape types (glaciers, lakes, and soils) over the course of a single field season as well as across multiple field seasons. We made five flights in the 2015-2016 field season (20 November 2015, 7 December 2015, 24 December 2015, 5 January 2016, and 12 January 2016), five flights in the 2016-2017 field season (11 November 2016, 3 December 2016, 14 December 2016, 3 January 2017, 23 January 2017), four flights in the 2017-2018 field season (22 November 2017, 7 December 2017, 27 December 2017, 13 January 2018), and two flights in the 2018-2019 field season (23 November 2018, 9 January 2019). Flights originated from Lake Hoare field camp, flew down-valley over Canada Glacier, Lake Fryxell, and Commonwealth Glacier, then turned around and flew up-valley to Taylor Glacier Meteorological Station, after which they returned to Lake Hoare field camp. Flights took roughly one hour and were flown at approximately 25.72 m s-1 (50 knots) and 91.44 m (300 ft) above the ground surface. These data can be normalized to incoming solar radiation (measured in-situ at meteorological stations) to calculate landscape albedo. When collected several times throughout a season, these results can show how snow distribution and physical changes to glacier and lake ice impact the amount of incoming radiation that is absorbed, while also tracking the influence of deposited sediment on ice surfaces. Moreover, these data are important for quantifying the long-term changes in energy connectivity between the atmosphere and the landscape (i.e., addressing Hypothesis 1 of the MCM V funding cycle). Name: Renée F. Brown Role: data manager completed McMurdo Dry Valleys LTER http://mcmlter.org/ English This is the Taylor Valley, a subjectively approximated contour by San Gil. We use this to denote the geographical extent of studies that encompass the whole Taylor Valley. According to Wiki contributors, the Taylor Valley is the southernmost of the three large Dry Valleys in the Transantarctic Mountains, Victoria Land, located west of McMurdo Sound. The valley extends from Taylor Glacier in the west to McMurdo Sound at Explorers Cove at the northwest head of New Harbour in the east and is about 29 kilometres (18 mi) long. It was once occupied by the receding Taylor Glacier, from which it derives its name. Taylor Valley contains Lake Bonney in the west (inward), and Lake Fryxell in the east (coastward), and Lake Hoare, Lake Chad, Mummy Pond and Parera Pond close together between the two. Further east of Lake Bonney is Pearse Valley. Taylor Valley is separated from Wright Valley in the north by Asgard Range, and from Ferrar Glacier in the south by Kukri Hills. 163.624877929690 161.707763671880 -77.808487073526 -77.519802097166 ground condition 2015-11-20 2019-01-09 https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX.csv ALBEDO_BOX eng; US McMurdo Dry Valleys LTER ALBEDO_BOX Number of Header Lines : 1 Orientation : Column Field Delimiter : , false DATASET_CODE Internal code used to identify the associated database entry. FLIGHT_DATE Date of flight. Date Time Format: MM/DD/YYYY DATE_TIME The date and time the data point was collected. Date Time Format: MM/DD/YYYY HH:MM:SS LATITUDE The latitude at which the data point was collected. Geographic coordinate in WGS1984 datum. LONGITUDE The longitude at which the data point was collected. Geographic coordinate in WGS1984 datum. ALTITUDE The altitude of the box at the time the data point was collected. RADIATION The measured reflected shortwave radiation. DBF https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX.csv https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20151120.zip ALBEDO_BOX_IMAGES_20151120 eng; US McMurdo Dry Valleys LTER ALBEDO_BOX_IMAGES_20151120 Data Source Definition : Albedo box flight images, captured 20 November 2015. Number of Header Lines : 1 Orientation : Column Field Delimiter : , false DBF https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20151120.zip https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20151207.zip ALBEDO_BOX_IMAGES_20151207 eng; US McMurdo Dry Valleys LTER ALBEDO_BOX_IMAGES_20151207 Data Source Definition : Albedo box flight images, captured 7 December 2015. Number of Header Lines : 1 Orientation : Column Field Delimiter : , false DBF https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20151207.zip https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20151224.zip ALBEDO_BOX_IMAGES_20151224 eng; US McMurdo Dry Valleys LTER ALBEDO_BOX_IMAGES_20151224 Data Source Definition : Albedo box flight images, captured 24 December 2015. Number of Header Lines : 1 Orientation : Column Field Delimiter : , false DBF https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20151224.zip https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20160105.zip ALBEDO_BOX_IMAGES_20160105 eng; US McMurdo Dry Valleys LTER ALBEDO_BOX_IMAGES_20160105 Data Source Definition : Albedo box flight images, captured 5 January 2016. Number of Header Lines : 1 Orientation : Column Field Delimiter : , false DBF https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20160105.zip https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20160112.zip ALBEDO_BOX_IMAGES_20160112 eng; US McMurdo Dry Valleys LTER ALBEDO_BOX_IMAGES_20160112 Data Source Definition : Albedo box flight images, captured 12 January 2016. Number of Header Lines : 1 Orientation : Column Field Delimiter : , false DBF https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20160112.zip https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20161111.zip ALBEDO_BOX_IMAGES_20161111 eng; US McMurdo Dry Valleys LTER ALBEDO_BOX_IMAGES_20161111 Data Source Definition : Albedo box flight images, captured 11 November 2016. Number of Header Lines : 1 Orientation : Column Field Delimiter : , false DBF https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20161111.zip https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20161203.zip ALBEDO_BOX_IMAGES_20161203 eng; US McMurdo Dry Valleys LTER ALBEDO_BOX_IMAGES_20161203 Data Source Definition : Albedo box flight images, captured 3 December 2016. Number of Header Lines : 1 Orientation : Column Field Delimiter : , false DBF https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20161203.zip https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20161214.zip ALBEDO_BOX_IMAGES_20161214 eng; US McMurdo Dry Valleys LTER ALBEDO_BOX_IMAGES_20161214 Data Source Definition : Albedo box flight images, captured 14 December 2016. Number of Header Lines : 1 Orientation : Column Field Delimiter : , false DBF https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20161214.zip https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20170103.zip ALBEDO_BOX_IMAGES_20170103 eng; US McMurdo Dry Valleys LTER ALBEDO_BOX_IMAGES_20170103 Data Source Definition : Albedo box flight images, captured 3 January 2017. Number of Header Lines : 1 Orientation : Column Field Delimiter : , false DBF https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20170103.zip https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20170123.zip ALBEDO_BOX_IMAGES_20170123 eng; US McMurdo Dry Valleys LTER ALBEDO_BOX_IMAGES_20170123 Data Source Definition : Albedo box flight images, captured 23 January 2017. Number of Header Lines : 1 Orientation : Column Field Delimiter : , false DBF https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20170123.zip https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20171122_0.zip ALBEDO_BOX_IMAGES_20171122 eng; US McMurdo Dry Valleys LTER ALBEDO_BOX_IMAGES_20171122 Data Source Definition : Albedo box flight images, captured 22 November 2017. Number of Header Lines : 1 Orientation : Column Field Delimiter : , false DBF https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20171122_0.zip https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20171207.zip ALBEDO_BOX_IMAGES_20171207 eng; US McMurdo Dry Valleys LTER ALBEDO_BOX_IMAGES_20171207 Data Source Definition : Albedo box flight images, captured 7 December 2017. Number of Header Lines : 1 Orientation : Column Field Delimiter : , false DBF https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20171207.zip https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20171227.zip ALBEDO_BOX_IMAGES_20171227 eng; US McMurdo Dry Valleys LTER ALBEDO_BOX_IMAGES_20171227 Data Source Definition : Albedo box flight images, captured 27 December 2017. Number of Header Lines : 1 Orientation : Column Field Delimiter : , false DBF https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20171227.zip https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20180113.zip ALBEDO_BOX_IMAGES_20180113 eng; US McMurdo Dry Valleys LTER ALBEDO_BOX_IMAGES_20180113 Data Source Definition : Albedo box flight images, captured 13 January 2018. Number of Header Lines : 1 Orientation : Column Field Delimiter : , false DBF https://mcm.lternet.edu/sites/default/files/data/ALBEDO_BOX_IMAGES_20180113.zip dataset Data were collected by helicopter using instruments mounted to a weighted box with a fin to reduce swing in-flight (i.e., an "albedo box"). A shortwave radiometer (CMP3, Kipp and Zonen) was mounted to point down at the valley floor. Additionally, a downward facing camera (CC5MPX, Campbell Scientific) was mounted next to the radiometer. A GPS unit (GPS16X-HVS, manufactured by Garmin for Campbell Scientific) was fixed to the top of the box. All instruments were wired in to a data logger (CR1000, Campbell Scientific) and programmed to collect data every three seconds. Before each flight, the radiometer and camera lens were cleaned. The albedo box was attached to a helicopter with a 6.1 m (20 ft) lead line. Data were downloaded and archived after each flight. Due to a hardware failure, images captured during the two 2018-2019 season flights were not recorded, and therefore these images are not included in the data package. Flights spanned the entire Taylor Valley and were routed over glaciers originating from the Asgard Range, the major lakes, and Taylor Glacier. Pilots were instructed to fly at 91.44 m (300 ft) off the ground and at a speed of 25.72 m s-1 (50 knots). Flights occurred on completely cloud free days or homogeneously cloudy days ensure there was no variability in incoming radiation across the Valley.  Metadata Access Constraints: none Metadata Use Constraints: none annually McMurdo Dry Valleys LTER http://mcmlter.org/ pointOfContact