Time series of water parameters, nutrient, and gas samples in Double Crossing Creek, 2019

DOI

Measurements of water parameters of dissolved oxygen (DO), pH, temperature, salinity, water depth, and electrical conductivity (EC) as well as gas samples of carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and radon (222Rn) were collected through time series apparatus, hourly over 1471 hours and 140 discrete samples of dissolved organic carbon (DOC), Nitrate (NO3-), and Ammonium (NH4-) were collected exclusively at one site in the headwaters of the stream. A calibrated Hydrolab sonde (Unidata, MS5) measured and logged water temperature (±0.02°C), DO (±0.2 mg/L), EC (±0.02 uS cm @°C), pH (±0.02), and salinity (±0.02) at 10 minute intervals and a ultrasonic doppler (Unidata, Starflow) measured water depth in 15 minute intervals. CO2, CH4, N2O, and 222rn samples were collected through a shower head gas equilibration exchanger. The gas exchanger units (Durridge Company) were set up to receive 3 L min-1 of stream water. The greenhouse gases of CO2, CH4 and N2O were sampled continuously by pumping the equilibrated headspace air from shower head gas equilibration device via a one-way valve to a calibrated cavity ringdown spectroscopy gas analyser (Picarro, G2308, ) with precision of < 3.5 ppb. 222Rn was measured from the shower head exchanger through a closed air loop to a calibrated Rad7 analyser (Durridge Company, RAD7) (222Rn half-life = 3.84 days) and measured at 10 min time steps. Nutrient samples (including duplicates) were collected with a sample-rinsed 60 mL polyethylene syringe. Discrete samples for dissolved organic carbon (DOC) analysis were filtered using pre-combusted 0.7 µm GF/F filters (Whatman), into 40 mL borosilicate vials (USP Type I). Samples for nitrogen were immediately filtered using Satourious ™ 0.45μm cellulose acetate syringe filters into 10 mL polyethylene sample tubes. All samples were kept in a cold icebox, away from light, for less than 5 hours and then frozen until laboratory analysis. Nutrient analysis of DOC was performed with the 40 mL borosilicate vials (USP Type I) first treated with 30 µL of H3PO4 before analysis using an Aurora 1030W TOC Analyser (Thermo Fisher Scientific, ConFLo IV). Nutrient analysis of ammonium (NH4+) and nitrate (NO3-) was performed on the 10 mL polyethylene sample tubes colourimetrically using a Lachat Flow Injection Analyser.

Identifier
DOI https://doi.pangaea.de/10.1594/PANGAEA.964533
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.964533
Provenance
Creator Woodrow, Rebecca ORCID logo; White, Shane A ORCID logo
Publisher PANGAEA
Publication Year 2024
Rights Creative Commons Attribution 4.0 International; Data access is restricted (moratorium, sensitive data, license constraints); https://creativecommons.org/licenses/by/4.0/
OpenAccess false
Representation
Resource Type Bundled Publication of Datasets; Collection
Format application/zip
Size 2 datasets
Discipline Earth System Research
Spatial Coverage (153.177 LON, -30.138 LAT)
Temporal Coverage Begin 2019-02-06T00:00:00Z
Temporal Coverage End 2019-04-08T05:59:59Z