CO2 emissions from inland waters are commonly determined by indirect methods that are based on the product of a gas transfer coefficient and the concentration gradient at the air water interface (e.g., wind-based gas transfer models). The measurements of concentration gradient are typically collected during the day in fair weather throughout the course of a year. Direct measurements of eddy covariance CO2 fluxes from a large inland water body (Ross Barnett reservoir, Mississippi, USA) show that CO2 effluxes at night are approximately 70% greater than those during the day.
Original Source [2]
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/large-co2-effluxes-night-and-during-synoptic-weather-events-significantly-contribute
[2] http://iopscience.iop.org/article/10.1088/1748-9326/11/6/064001/meta;jsessionid=AC76FDB57CF5F805213B82978C516E6E.c1.iopscience.cld.iop.org
[3] http://admin.indiaenvironmentportal.org.in/category/author/heping-liu
[4] http://admin.indiaenvironmentportal.org.in/category/author/qianyu-zhang
[5] http://admin.indiaenvironmentportal.org.in/category/author/gabriel-g-katul-et-al
[6] http://admin.indiaenvironmentportal.org.in/category/journal/environmental-research-letters
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/reservoirs
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mississippi
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/green-house-gases
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/inland-waterways