Estimation of gas exchange coefficients from observations on the Yenisei River, Russia Academic Article uri icon


  • AbstractThe gas exchange between water bodies and air is difficult to measure, thus the approximations of airwater gas exchange coefficient based solely on wind speed has been widely used. However, such approaches may not work well in river environments. In rivers, water currents may govern gas exchange. Thus, a new approximation for calculating the gas exchange coefficient (k) based on the nearsurface velocity scale (us) is suggested and compared to windbased estimates. Our velocity scale estimates are based on field observations during summer 2016 on the Yenisei River using an Acoustic Doppler Current Profiler, highfrequency temperature profilers and a vesselmounted meteorological sensorssuite. The results demonstrate that usderived gas exchange coefficients are higher than those based solely on wind speed. The results demonstrate that the wind approximation underestimates gas exchange coefficients during lowwind conditions.

published proceedings


author list (cited authors)

  • Molodtsov, S., Anis, A., Li, D., Korets, M., Panov, A., Prokushkin, A., Yvon-Lewis, S., & Amon, R.

citation count

  • 0

complete list of authors

  • Molodtsov, Sergey||Anis, Ayal||Li, Dapeng||Korets, Mikhail||Panov, Alexey||Prokushkin, Anatoly||Yvon-Lewis, Shari||Amon, Rainer MW

publication date

  • December 2022