uid=MCM,o=EDI,dc=edirepository,dc=org all public read BOHNER_HYDRO_DAILY Michael Gooseff michael.gooseff@colorado.edu http://goosefflab.weebly.com https://orcid.org/0000-0003-4322-8315 Diane McKnight diane.mcknight@colorado.edu https://orcid.org/0000-0002-4171-1533 McMurdo Dry Valleys LTER http://mcmlter.org/ Anna Wright anna.t.wright@colorado.edu https://orcid.org/0009-0003-4709-151X field technician Renée Brown rfbrown@unm.edu https://orcid.org/0000-0002-4986-7663 data manager Sam Beane Samuel.Beane@colorado.edu former field crew 2024-02-09 English

As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, a systematic sampling program has been undertaken to monitor the glacial meltwater streams in that region. This package contains daily summaries derived from 15-minute measurements of water quality and quantity parameters measured with automatic recording devices on streams in this region. Specifically, this metadata record describes the daily hydrological summaries for the McMurdo Dry Valleys' Bohner Stream at the B5 streamgage, located in the Bonney Basin of Taylor Valley. Measurements commenced during the 2011-12 austral summer and are ongoing. Gage control was constructed on 27 Jan 2011 at -77.696302 62.558285. This dataset extends through the first half of the 2022-23 field season.

conductivity discharge hydrology specific conductivity stream discharge streamflow streams temperature water temperature LTER Controlled Vocabulary Antarctic desert streams Antarctica conductivity discharge hydrology LTER McMurdo Dry Valleys specific conductivity stream streamflow Taylor Valley temperature water temperature Station Keywords disturbance LTER Core Areas Codes Qe - Flow estimated by averaging adjacent 15-minute intervalsQmf - Flow data Missing â flow present â either observed or suggested by water temperature and specific conductance dataQmnf - Flow data Missing â no flow - either observed or suggested by water temperature and specific conductance dataQmu - Flow data Missing or flow status unknownQno - No Flow all seasonQsed - Sediment build up on orifice line - may lead to recorded stage measurements corresponding to higher than actual discharge valuesWtx - No water temperature probe at stationWTexp - temperature probe may have been exposed to air because of low flowsSCx - No specific conductance probe at station

This data package is released under the Creative Commons Attribution 4.0 International License (CC BY 4.0; http://creativecommons.org/licenses/by/4.0/), which allows consumers (hereinafter referred to as “Data Users”) to freely reuse, redistribute, transform, or build on this work (even commercially) so long as appropriate credit is provided. Accordingly, Data Users are required to properly cite this data package in any publications or in the metadata of any derived products that result from its use (in whole or in part). A recommended citation is provided on the summary metadata page associated with this data package in the McMurdo Dry Valleys LTER Data Catalog (https://mcmlter.org/data), and a generic citation may be found on the summary metadata page in the repository where this data package was obtained. When these data contribute significantly to the contents of a publication, Data Users must also acknowledge that data were provided by the NSF-supported McMurdo Dry Valleys Long Term Ecological Research program (OPP-2224760). This data package has been released in the spirit of open scientific collaboration. Hence, Data Users are strongly encouraged to consider consultation, collaboration, and/or co-authorship (as appropriate) with the data package creator(s). Data Users should be aware these data may be actively used by others for ongoing research; thus, coordination may be necessary to prevent duplicate publication. Data Users should also recognize that misinterpretation of data may occur if they are used outside the context of the original study. Hence, Data Users are urged to contact the data package creator(s) if they have any questions regarding methodology or results. While substantial efforts are made to ensure the accuracy of this data package (with all its components), complete accuracy cannot be guaranteed. Periodic updates to this data package may occur, and it is the responsibility of Data Users to check for new versions. This data package is made available “as is” and comes with no warranty of accuracy or fitness for use. The creator(s) of this data package and the repository where these data were obtained shall not be liable for any damages resulting from misinterpretation, use, or misuse of these data. Finally, as a professional courtesy, we kindly request Data Users notify the primary contact referenced in the metadata when these data are used in the production of any derivative work or publication. Notification should include an explanation of how the data were used, along with a digital copy of the derived product(s). Thank you.

https://mcm.lternet.edu/content/daily-summarized-seasonal-measurements-discharge-water-temperature-and-specific-conductivi-0 Bohner at B5. Near Bohner at lower. Started Jan 2011. Parent Stream: Bohner Stream Provenance : Coordinates from Steve Crisp (email to Inigo San Gil) 162.558142000000 162.558142000000 -77.696332000000 -77.696332000000 2011-11-29 2023-01-21 No data were collected during the 20-21 austral summer due to the COVID-19 pandemic. McMurdo Dry Valleys LTER Information Manager im@mcmlter.org McMurdo Dry Valleys LTER http://mcmlter.org/ McMurdo Dry Valleys LTER

Campbell CR10 dataloggers were used to record stream stage, water temperature, and conductivity in a network of stream gages. Stage is monitored with pressure transducers; PSS-1 and PS-2 models form Paroscientific Corporation, and Accubars from Sutron Corporation. The pressure transducers measure the backpressure in orifice lines set into or above controls in the stream channel. In addition, some of the sites monitor water temperature and conductivity with either USGS minimonitor probes, or Campbell temperature/conductivity probes. Ratings are developed for the stage/discharge relationship at each site by measuring streamflow with current meters or portable flumes, according to standard USGS methods. Datum corrections to the stage are determined by periodically surveying the elevation of the orifice line to the control and nearby reference marks. Calibrations for the temperature and conductivity are assessed by measuring these parameters with portable field meters while simultaneously noting the readings from the gage probes. Data is downloaded into Campbell storage modules, and retrieved into pcs. From there, the data is sent to a USGS computer, where time discrepancies are resolved, and the data is loaded into Aquarius, a database system developed in the USGS for maintaining and processing water data. A determination for each site as to when the stream was flowing and when it was not is made. For water temperature and conductivity, bad data is deleted. Variable shifts are determined based on field calibration measurements, and other indicators. The shifts are applied to the remaining good data inside of Aquarius. The data is pulled out of Aquarius, and reformatted for input into ORACLE. Cases of water temperature below reasonable values are set to lower limits. A quality code is assigned to every value. The resulting data is uploaded into the ORACLE and the McMurdo database. For stage/discharge, bad data is deleted. Survey data is reviewed to compute weir elevations and datum corrections. A rating curve is developed graphically, based on available data, and entered into Aquarius. All applicable shifts and datum corrections are entered into Aquarius. All corrections and ratings are run against the good stage data to compute the discharge at each recording interval. The data is pulled out of Aquarius, and reformatted for input into ORACLE. A quality code is assigned to every value. The resulting data is uploaded into ORACLE and the McMurdo database.

BOHNER_HYDRO_DAILY Bohner Stream at B5 (Daily) mcmlter-strm-b5_bohner-daily-20240108.csv 32946 1 1 column , " https://mcm.lternet.edu/sites/default/files/data/mcmlter-strm-b5_bohner-daily-20240108.csv STRMGAGEID Stream Gage ID Code representing the stream gage string Code representing the stream gage DATE_TIME Date Date on which the measurements were made date MM/DD/YYYY AVG_DISCHARGE Average Discharge Average daily stream discharge, measured in liters per second. litersPerSecond real STDDEV_DISCHARGE Standard deviation for discharge Standard deviation of daily stream discharge litersPerSecond real MIN_DISCHARGE Minimum discharge Minimum daily discharge rate litersPerSecond real MAX_DISCHARGE Maximum discharge Maximum daily discharge rate. litersPerSecond real N_DISCHARGE Number of discharge observations Number of discharge observations per day. string Number of discharge observations per day. TDAILY_DISCHARGE Total daily discharge Total daily stream discharge. litersPerSecond real AVG_TEMP Average temperature Average daily water temperature in celsius. celsius real STDDEV_TEMP Standard deviation for water temperature Standard deviation of daily water temperature. celsius real MIN_TEMP Minimum temperature Minimum daily water temperature. celsius real MAX_TEMP Maximum temperature Maximum daily water temperature. celsius real N_TEMP Number of temperature observations Number of daily water temperature observations. string Number of daily water temperature observations. AVG_COND Average conductivity Mean daily specific conductivity. microsiemensPerCentimeter real STDDEV_COND Standard deviation of conductivity Standard deviation of daily specific conductivity. microsiemensPerCentimeter real MIN_COND MIN_COND MIN_COND string MIN_COND MAX_COND Maximum conductivity Maximum daily specific conductivity. microsiemensPerCentimeter real N_COND Number of conductivity observations Number of daily specific conductivity observations. string Number of daily specific conductivity observations. microsiemens per centimeter