Filters: Tags: eddy covariance (X) > partyWithName: Jennifer L Lewicki (X)

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Long-term gas and heat emissions measurements, Norris Geyser Basin, Yellowstone National Park We installed an eddy covariance station on July 10, 2018 at Bison Flat, an acid-sulfate, vapor-dominated area (0.04-km2) in Norris Geyser Basin, Yellowstone National Park, WY to monitor variations in hydrothermal gas and heat emissions. Since then, this station has measured CO2, H2O and sensible and latent heat fluxes, air temperature and pressure, and wind speed and direction on a half-hourly basis. We also measured soil CO2 fluxes and temperatures on a grid using the accumulation chamber method and thermocouple probes, respectively, on July 11-12, 2018 and soil CO2 fluxes only on June 25, 2019. On July 10, 2018 and June 24, 2019, we collected fumarole gas samples for analysis of bulk chemical and carbon (d13C-CO2)... Categories: Data; Tags: USGS Science Data Catalog (SDC), Volcanology, Yellowstone National Park, eddy covariance, gas, All tags... heat, hydrothermal processes, Fewer tags Gas and heat emission measurements at Solfatara Plateau Thermal Area, Yellowstone National Park (May-September 2017) From May to September 2017 measurements of gas and heat emissions were made at Solfatara Plateau Thermal Area, an acid-sulfate, vapor-dominated area in Yellowstone National Park, Wyoming. An eddy covariance system measured half-hourly CO2, H2O and sensible and latent heat fluxes, air temperature and pressure, wind speed and direction and soil moisture. A Multi-GAS instrument measured (0.5 Hz frequency) atmospheric H2O, CO2, SO2 and H2S volumetric mixing ratios, air pressure, temperature and relative humidity and wind speed and direction. Soil temperature at 30 cm depth and CO2 flux were also measured on a grid across a 0.11 km2 area using thermocouple probes and the accumulation chamber method, respectively. The... Categories: Data; Tags: Geochemistry, Multi-GAS, USGS Science Data Catalog (SDC), Volcanology, Yellowstone National Park, All tags... eddy covariance, gas, heat, hydrothermal processes, Fewer tags Gas and heat emission measurements in Norris Geyser Basin, Yellowstone National Park (May-October 2016) From 14 May to 6 October 2016 measurements of gas and heat emissions were made at Bison Flat, an acid-sulfate, vapor-dominated area (0.04-km2) of Norris Geyser Basin, Yellowstone National Park, WY. An eddy covariance system measured half-hourly CO2, H2O and sensible and latent heat fluxes, air temperature and pressure, wind speed and direction, soil moisture and rainfall. A Multi-GAS instrument measured (1 Hz frequency) atmospheric H2O, CO2 and H2S volumetric mixing ratios, air pressure, temperature and relative humidity and wind speed and direction. Soil CO2 fluxes and temperature profiles were also measured on a grid using the accumulation chamber method and thermocouple probes, respectively. These data were used... Categories: Data; Tags: Multi-GAS, USGS Science Data Catalog (SDC), Volcanology, Yellowstone National Park, eddy covariance, All tags... gas, heat, hydrothermal processes, Fewer tags Long-term CO2 emissions measurements, Horseshoe Lake tree kill area, Mammoth Mountain, CA We installed an eddy covariance station on July 22, 2014 at the Horseshoe Lake tree kill area on Mammoth Mountain, CA to monitor variations in magmatic CO2 emissions. Since then, this station has measured CO2, H2O and sensible and latent heat fluxes, air temperature and pressure, and wind speed and direction on a half-hourly basis. We also measured soil CO2 fluxes across the area (0.32 km2) using the accumulation chamber method on July 23, 2014, June 20-21, 2015, July 15, 2016, July 27-28, 2017, July 31-August 1, 2018, and August 2-3, 2019. The eddy covariance and soil CO2 flux data sets were used to characterize temporal and spatial variations in magmatic CO2 emissions and their relationships to meteorological... Categories: Data; Tags: CO2 flux, Mammoth Mountain, Mono County, USGS Science Data Catalog (SDC), Volcanology, All tags... accumulation chamber, eddy covariance, field inventory and monitoring, volcanic activity, Fewer tags