With the increased use of natural gas, safety and environmental concerns from underground
leaking natural gas pipelines are becoming more widespread. What is not well understood …

Soil respiration (Rs) is the largest source of atmospheric CO2, and an accurate
understanding of the relationship between near-surface winds, CO2 release from the soil …

We investigate the influence of near‐surface wind conditions on subsurface gas transport
and on soil‐atmosphere gas exchange for gases of different density. Results of a sand tank …

Molecular diffusion is commonly assumed as main physical process of gas transport in soils.
However, non-diffusive gas transport processes like the so-called pressure-pumping effect …

Open-path Fourier transform infrared spectroscopy (OP-FTIR) has often been used to
measure hazardous or trace gases from hot point sources (eg volcano, industrial, or …

In high permeability soils, gas flux through the Earth–atmosphere interface can be
significantly greater than expected from only diffusion. One mechanism that can contribute to …

Excess CO2 accumulated in soils is typically transported to the atmosphere through
molecular diffusion along a concentration gradient. Because of the slow and constant nature …

Effects of wind speed and wind gustiness on horizontal and vertical subsurface gas transport
and subsurface–atmosphere gas exchange were investigated experimentally using a 40 …

In the early stages of a coalfield fire, CO2 emissions are relatively low, and it is challenging
to detect CO2 concentrations in the soil surface due to the impact of surface temperature and …

Above‐surface mean wind speed profiles and corresponding below‐surface horizontal pore
air velocity profiles were measured for two porous media with different particle size and gas …