uid=MCM,o=EDI,dc=edirepository,dc=org all public read GLACIER_SUPRA_DO Anna Bergstrom annabergstrom@boisestate.edu https://orcid.org/0000-0002-9684-4018 Michael Gooseff michael.gooseff@colorado.edu http://goosefflab.weebly.com https://orcid.org/0000-0003-4322-8315 McMurdo Dry Valleys LTER http://mcmlter.org/ Joel Singley

Institute of Arctic and Alpine Research Boulder CO 80303 US

joel.singley@colorado.edu https://orcid.org/0000-0002-7906-8491 field technician Matthew Cohen mjc@ufl.edu http://sfrc.ifas.ufl.edu/ecohydrology/index.html https://orcid.org/0000-0001-5674-1850 associated researcher Renée Brown rfbrown@unm.edu https://orcid.org/0000-0002-4986-7663 data manager 2020-02-11 English

We installed dissolved oxygen sensors in three locations on a supraglacial stream network on Canada Glacier in Taylor Valley, Antarctica in conjunction with a series of nutrient tracer injection experiments. This data collection was intended to provide context for respiration and primary productivity via dissolved oxygen dynamics during our nutrient tracer injections. Sensors were deployed a day before the start of the tracer series and collected on the last day of experiments. Over the course of their deployment, two of the three locations had issues with freezing around the sensor and produced large artifacts (swings) in the data. 

dissolved oxygen ice metabolism respiration LTER Controlled Vocabulary Antarctica glacier ice primary productivity respiration Station Keywords primary production LTER Core Areas

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https://mcm.lternet.edu/content/dissolved-oxygen-measurements-supraglacial-streams-canada-glacier-antarctica-january-2019 The Canada Glacier a small glacier flowing south-east into the northern side of Taylor Valley.  The glacier receives less than 10 cm of snowfall annually. Its seasonal melting feeds Lake Hoare to the west and Lake Fryxell to the east. 162.894287109375 163.057708740234 -77.598403930664 -77.632133483887 2019-01-13 2019-01-20 McMurdo Dry Valleys LTER Information Manager im@mcmlter.org McMurdo Dry Valleys LTER http://mcmlter.org/ McMurdo Dry Valleys LTER

We calibrated 3 dissolved oxygen and temperature loggers immediately prior to deployment and placed them in three reaches to record on a 5 min interval. The three stream reaches were located on the lower Canada Glacier ablation zone in Taylor Valley, Antarctica (Reach 1: -77.62767, 163.96059; Reach 2: -77.6281, 163.957583; Reach 3: -77.629258, 163.964103). Sensors used were HOBO Dissolved Oxygen Logger U26-001, In-Situ Inc. During the course of time that the loggers were deployed, tracers were released in Reach 1 at 10:20:00 on 1/17/19 (NaNO3- and NaCl) and 10:20:00 on 1/18/19 (NaNO3- , KH2PO4-  and NaCl); in Reach 2 at 13:00:00 on 1/14/19 (NaNO3- and NaCl), at 10:40:00 on 1/15/19 (NaNO3- , KH2PO4-  and NaCl), at 10:20:00 on 1/16/19 (NaNO3- , KH2PO4-, glucose, and NaCl), and at 12:25:00 on 1/19/19 (NaNO3-, glucose, and NaCl); and in Reach 3 at 12:45:00 on 1/17/19 (NaNO3- and NaCl) and 12:15:00 on 1/18/19 (NaNO3- , KH2PO4-  and NaCl). Over the course of their deployment, two of the three locations had issues with freezing around the sensor and produced large artifacts (swings) in the data. In addition, the sensor located in Reach 3 was removed from the water briefly and repositioned around 11:00 on 1/15/19. Raw dissolved oxygen concentrations were post-processed and corrected for atmospheric pressure. Pressure timeseries was measured using a barometer (HOBO Water Level (13 ft) Data Logger- U20L-04, In-Situ Inc.) co-located with the dissolved oxygen sensor on Reach 2. The tracer experiment data collected concurrently are also available on the MCM LTER database and provide further information on the tracer methods and data. 

GLACIER_SUPRA_DO Supraglacial Dissolved Oxygen Data GLACIER_SUPRA_DO.csv 180695 1 column , " https://mcm.lternet.edu/sites/default/files/data/GLACIER_SUPRA_DO.csv DATASET_CODE Dataset code Internal dataset code. string Internal dataset code. DATE_TIME Date and time Date and time of measurement (GMT+13). date MM/DD/YYYY HH:MM:SS DO_RAWCONC_MGL_R1 Raw dissolved oxygen concentration in reach 1 Uncorrected dissolved oxygen concentration in Reach 1. milligramsPerLiter real BLANK missing TEMP_C_R1 Temperature in reach 1 Water/air temperature in Reach 1. celsius real BLANK missing DO_ADJ_CONC_MGL_R1 Adjusted dissolved oxygen concentration in reach 1 Post-processed dissolved oxygen concentration in Reach 1. milligramsPerLiter real BLANK missing DO_PERCENT_SAT_R1 Percent saturation of dissolved oxygen in reach 1 Percent saturation of dissolved oxygen in Reach 1. percent real BLANK missing DO_RAWCONC_MGL_R2 Raw dissolved oxygen concentration in reach 2 Uncorrected dissolved oxygen concentration in Reach 2. milligramsPerLiter real BLANK missing TEMP_C_R2 Temperature in reach 2 Water/air temperature in Reach 2. celsius real BLANK missing DO_ADJ_CONC_MGL_R2 Adjusted dissolved oxygen concentration in reach 2 Post-processed dissolved oxygen concentration in Reach 2. milligramsPerLiter real BLANK missing DO_PERCENT_SAT_R2 Percent saturation of dissolved oxygen in reach 2 Percent saturation of dissolved oxygen in Reach 2. percent real BLANK missing DO_RAWCONC_MGL_R3 Raw dissolved oxygen concentration in reach 3 Uncorrected dissolved oxygen concentration in Reach 3. milligramsPerLiter real BLANK missing TEMP_C_R3 Temperature in reach 3 Water/air temperature in Reach 3. celsius real BLANK missing DO_ADJ_CONC_MGL_R3 Adjusted dissolved oxygen concentration in reach 3 Post-processed dissolved oxygen concentration in Reach 3. milligramsPerLiter real BLANK missing DO_PERCENT_SAT_R3 Percent saturation of dissolved oxygen in reach 3 Percent saturation of dissolved oxygen in Reach 3. percent real BLANK missing ratio of two quantities as percent composition (1:100)