Peter T. DoranCristina D. Takacs-VesbachJohn C. Priscu 2016-09-29 tabular digitial data McMurdo Dry Valleys LTER McMurdo Dry Valleys LTER 10.6073/pasta/928ab7198ef209d76ea7ab4004ec6be7 https://mcm.lternet.edu/content/lake-bonney-autonomous-lake-profiler-and-samplers-alps-dissolved-co2-concentrations Knowledge of the McMurdo Dry Valley (MDV) lakes is limited by winter access, a period which is most relevant in understanding the habitability of other icy worlds and critical to understanding the overall function of these lakes. Owing to the lack of winter access, data that normally require human presence are incomplete. Our goal was to conduct the first year-round investigation of the biogeophysics of these unique lakes. An important part of the McMurdo Long Term Ecological Research (LTER) is evaluating carbon and nitrogen budgets in perennial ice-covered lakes. This data set addresses this core area of research and quantifies the dissolved CO 2 concentrations found at specific depths in McMurdo Dry Valley lakes. 2013-12-13 2014-12-14 ground condition Metadata and data prepared by Luke Winslow and Inigo San Gil, Oct 2016 As needed Lake Bonney is a saline lake with permanent ice cover at the western end of Taylor Valley in the McMurdo Dry Valleys of Victoria Land, Antarctica. It is 7 kilometres or 4.3 mi long and up to 900 metres or 3,000 ft wide. A narrow channel only 50 metres or 160 ft wide. Lake Bonney at Narrows separates the lake into East Lake Bonney 3.32 square kilometres or 1.28 sq mi and West Lake Bonney, 0.99 square kilometres or 0.38 sq mi. Valley: Taylor Distance to Sea : 28 Maximum Length (km): 2.6 Maximum Width (km): 0.9 Maximum Depth (m): 40 Surface Area (km^2): 0.99 Ice Thickness Average Surface (m): 2.8-4.5 Volume (m^3 * 10^6): 10.1 162.354934692383 162.269104003906 -77.714805603027 -77.727287292480 57m 57m meter Lake Bonney is a saline lake with permanent ice cover at the western end of Taylor Valley in the McMurdo Dry Valleys of Victoria Land, Antarctica. It is 7 kilometres or 4.3 mi long and up to 900 metres or 3,000 ft wide. A narrow channel only 50 metres or 160 ft wide. Lake Bonney at Narrows separates the lake into East Lake Bonney 3.32 square kilometres or 1.28 sq mi and West Lake Bonney, 0.99 square kilometres or 0.38 sq mi. The west lobe is flanked by Taylor glacier. Valley: Taylor Distance to Sea : 25 Maximum Length (km): 4.8 Maximum Width (km): 0.9 Maximum Depth (m): 37 Surface Area (km^2): 3.32 Ice Thickness Average Surface (m): 3 - 4.5 Volume (m^3 * 10^6): 54.7 162.536209106445 162.353210449219 -77.697700500488 -77.724441528320 57m 57m meter [term:vocabulary] None <cntorg>McMurdo Dry Valleys LTER</cntorg> <onlink>http://mcmlter.org/</onlink> <span property="dc:title" content="McMurdo Dry Valleys LTER" class="rdf-meta element-hidden"></span> Name: Luke Winslow Role: field crew Name: Heather Buelow Role: field crew Name: Jeff Patriarche Role: field crew Name: Maciej K. Obryk Role: field crew Name: Amy Chiuchiolo Role: lab crew Name: Jeff Patriarche Role: lab crew Name: Luke Winslow Role: data manager Name: Inigo San Gil Role: data manager Not Applicable Not Applicable Field and/or Lab Methods Through the ice, wire-walking profilers (McLane Labs Ice Tethered Profilers [ITPs]) were deployed in both lobs of Lake Bonney. Attached to the ITPs were sensors for dissolved CO2 (Pro-Oceanus XXX). The ITPs were programmed to profile once daily around regional solar noon. A profile consisted of one downward and one upward movement to the furthest reach of the profilers possible movement, or the bottom of the lake or bottom of the ice, whichever limit came first. During the profiles, CO2 concentration was recorded every XXX seconds. Because the CO2 sensor did not contain its own pressure sensor, pressure from the CTD endcap was matched with dissolved CO2 observations based on time. Through the ice, wire-walking profilers (McLane Labs Ice Tethered Profilers [ITPs]) were deployed in both lobs of Lake Bonney. Attached to the ITPs were sensors for dissolved CO2 (Pro-Oceanus XXX). The ITPs were programmed to profile once daily around regional solar noon. A profile consisted of one downward and one upward movement to the furthest reach of the profilers possible movement, or the bottom of the lake or bottom of the ice, whichever limit came first. During the profiles, CO2 concentration was recorded every XXX seconds. Because the CO2 sensor did not contain its own pressure sensor, pressure from the CTD endcap was matched with dissolved CO2 observations based on time. unknown ALPS_ELB_CO2_highrange Description of the units and the details about the CO2 high range data container. DATE_TIME Date and time when this data point was acquired The data provider calendar date/time MM/DD/YYYY HH24:Mi:s gregorian calendar co2_value_highrange CO2 concentration from high-range sensor (0-2%) The data provider 0 2 partsPerHundred .01 internal_temp Internal sensor temperature The data provider 0 10 celsius .01 McMurdo Dry Valleys LTER The data distributor shall not be liable for innacuracies in the content http 1 0 \r\n 1 column , https://mcm.lternet.edu/sites/default/files/data/ALPS_ELB_CO2_highrange.csv None ALPS_ELB_CO2_lowrange Description of the units and the details about the CO2 low range data container. DATE_TIME Date and time when this data point was acquired The data provider calendar date/time MM/DD/YYYY HH24:Mi:s gregorian calendar co2_value_lowrange CO2 concentration from low-range sensor (0-2000 ppm) The data provider 0 4000 partsPerMillion .1 internal_temp Internal sensor temperature The data provider 0 10 celsius .01 McMurdo Dry Valleys LTER The data distributor shall not be liable for innacuracies in the content http 1 0 \r\n 1 column , https://mcm.lternet.edu/sites/default/files/data/ALPS_ELB_CO2_lowrange.csv None ALPS_WLB_CO2_lowrange Description of the units and the details about the CO2 low range data container. DATE_TIME Date and time when this data point was acquired The data provider calendar date/time MM/DD/YYYY HH24:Mi:s gregorian calendar co2_value_lowrange CO2 concentration from low-range sensor (0-2000 ppm) The data provider 0 4000 partsPerMillion .1 internal_temp Internal sensor temperature The data provider 0 10 celsius .01 McMurdo Dry Valleys LTER The data distributor shall not be liable for innacuracies in the content http 1 0 \r\n 1 column , https://mcm.lternet.edu/sites/default/files/data/ALPS_WLB_CO2_lowrange.csv None ALPS_WLB_CO2_highrange Description of the units and the details about the CO2 high range data container. DATE_TIME Date and time when this data point was acquired The data provider calendar date/time MM/DD/YYYY HH24:Mi:s gregorian calendar co2_value_highrange CO2 concentration from high-range sensor (0-2%) The data provider 0 2 partsPerHundred .01 internal_temp Internal sensor temperature The data provider 0 10 celsius .01 McMurdo Dry Valleys LTER The data distributor shall not be liable for innacuracies in the content http 1 0 \r\n 1 column , https://mcm.lternet.edu/sites/default/files/data/ALPS_WLB_CO2_highrange.csv None 2016-09-29 2016-09-29 McMurdo Dry Valleys LTER http://mcmlter.org/ Biological Data Profile of the Content Standards for Digital Geospatial Metadata devised by the Federal Geographic Data Committee. Drupal Ecological information Management Systems, version D7, Biological Data Profile module