Seasonal CH4 N2O and NH3 fluxes from air water interface of eutrophic Central Anatolia lake Turkey

Date

2014-09-26

Author

Ogun, Ezgi
Aksoy, Ayşegül
Sanin, Selim Latif

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Freshwater ecosystems especially shallow lakes relative to their surface area are very important zones for greenhouse gas (GHG) emissions (CH4, N2O, CO2) and they are typically supersaturated with these gases (Liikanen et. al., 2003; Whitfield et. al., 2011; Diem et. al., 2012; Miyajima et. al.,1997). Methane and nitrous oxide are long-lived greenhouse gases (LLGHGs) with the radiative efficiency of 3.7x10-4 and 3.03x10-3 W m-2 ppb-1 respectively. Ammonia is the very important alkaline particle in the atmosphere and neutralizes acidic compounds (Asman et. al., 1998). Although N-fluxes from air-water interface is negative, ammonia shows bi-directional fluxes in the case of excessive N-load and the pH of the water above 8.0 (Kugler et. al., 2008). There are lack of studies about the temperate lakes of Mediterranean region and Turkey. These studies about the effects of climate change in Turkish lakes but they are not include the emission rates of greenhouse gases from lake surface. (Tokgöz N., 2010; Jeppesen et. al., 2008; Yağbasan and Yazicigil, 2012). The aim of this study to investigate the GHG emission rate and calculate the gas flux from air-water interface with using suitable equations. In order to achieve this seasonal and temporal gas samples were collected from the water column which reaches the bottom of the lake. Therefore, it was possible to calculated the hourly gas emission from the one square meter area of Lake Eymir with considering the effect of weather conditions.

URI

https://hdl.handle.net/11511/72278

Conference Name

IWA World Water Congress (21 - 26 Eylül 2014)

Collections

Department of Environmental Engineering, Conference / Seminar

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Citation Formats

E. Ogun, A. Aksoy, and S. L. Sanin, “Seasonal CH4 N2O and NH3 fluxes from air water interface of eutrophic Central Anatolia lake Turkey,” presented at the IWA World Water Congress (21 - 26 Eylül 2014), Lisbon, Portugal, 2014, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/72278.