Title: Data for: Gas Transfer Velocities Evaluated Using Carbon Dioxide as a Tracer Show High Streamflow to Be a Major Driver of Total CO2 Evasion Flux for a Headwater Stream
Citation: McDowell, M., & Johnson, M. (2019). Data for: Gas Transfer Velocities Evaluated Using Carbon Dioxide as a Tracer Show High Streamflow to Be a Major Driver of Total CO2 Evasion Flux for a Headwater Stream [Data set]. UBC Dataverse. https://doi.org/10.5683/SP2/Y4NRG6
Study Site: southwestern British Columbia, Canada
Purpose: Characterizing the global carbon cycle is crucial for many aspects of earth science. Inland waters, such as streams, rivers, lakes, and estuaries, play a major role in the carbon cycle by carrying carbon from the land into water bodies and processing it, such that much of the carbon that enters an inland water body is either stored in sediments or evades into the atmosphere as carbon dioxide (CO2), a potent greenhouse gas. Headwater streams are particularly active sites of CO2 evasion, but a lack of data and limited sampling techniques inhibit our ability to accurately estimate and characterize this important system. This study provides new data on CO2 evasion from a headwater stream and suggests that high streamflow events, such as storms, drive CO2 evasion. This study also outlines a new technique for measuring CO2 evasion from streams, which will allow researchers to collect high-quality data more frequently.
Abstract: This dataset contains direct in-situ measurements and modeled values of stream properties and air temperature of a steep, turbulent headwater stream in southwestern British Columbia, Canada, between November 2016 and June 2017.
Continuous data variables: date-time, CO2 concentration, pH, water temperature, electrical conductivity, air temperature, stream discharge, stream depth, water velocity, modeled gas transfer velocity of CO2, modeled gas transfer velocity of CO2 normalized to a Schmidt number of 600, dissolved oxygen concentration
Injection data variables: date-time, stream depth, gas transfer velocity of CO2, gas transfer velocity of CO2 normalized to a Schmidt number of 600, stream discharge, water temperature, water velocity
Supplemental Information Summary: This work was conducted on the unceded, ancestral territories of the xʷməθkʷəy̓əm (Musqueam) and Katzie peoples.
Research:
Further Info: McDowell, M. J., & Johnson, M. S. ( 2018). Gas transfer velocities evaluated using carbon dioxide as a tracer show high streamflow to be a major driver of total CO2 evasion flux for a headwater stream. Journal of Geophysical Research: Biogeosciences, 123, 2183– 2197. https://doi.org/10.1029/2018JG004388doi: doi.org/10.1029/2018JG004388
Status: Complete
Keywords:
hydrology,
carbon dioxide,
water-atmosphere exchange,
carbon cycle,
headwaters,
Geographical coordinates: North: 49.45, South: 49.45 East: -122.93 West: -122.93
Bounding Temporal Extent: Start Date: 2016-11-01, End
Date: 2017-06-30
