Meteorological variables and concentrations of helium, carbon dioxide, and oxygen in soil gases collected regularly at a single site for more than a year
Abstract:Concentrations of helium, carbon dioxide, and oxygen were measured over a period of more than a year at a single site. Samples of soil gases were collected from a hollow probe emplaced at 0.75-m depth and from a hemisphere on the ground surface. Soil temperature, air temperature, percent humidity, barometric pressure, rain, and snowfall were also measured. Sampling and analysis of the soil gases are described and gas and meteorological measurements are listed.
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