Тип публикации: статья из журнала
Год издания: 2022
Идентификатор DOI: 10.1002/lom3.10519
Аннотация: <jats:title>Abstract</jats:title><jats:p>The gas exchange between water bodies and air is difficult to measure, thus the approximations of air–water 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 excПоказать полностьюhange. Thus, a new approximation for calculating the gas exchange coefficient (<jats:italic>k</jats:italic>) based on the near-surface velocity scale (<jats:italic>u</jats:italic><jats:sub>s</jats:sub>) is suggested and compared to wind-based estimates. Our velocity scale estimates are based on field observations during summer 2016 on the Yenisei River using an Acoustic Doppler Current Profiler, high-frequency temperature profilers and a vessel-mounted meteorological sensors-suite. The results demonstrate that <jats:italic>u</jats:italic><jats:sub>s</jats:sub>-derived gas exchange coefficients are higher than those based solely on wind speed. The results demonstrate that the wind approximation underestimates gas exchange coefficients during low-wind conditions.</jats:p>
Журнал: Limnology and Oceanography: Methods
Выпуск журнала: Т. 20, № 12
Номера страниц: 781-788
ISSN журнала: 15415856
Издатель: American Society of Limnology and Oceanography, Inc.