CO<sub>2</sub>, δO<sub>2</sub>/N<sub>2</sub> and APO: observations from the Lutjewad, Mace Head and F3 platform flask sampling network
oleh: S. van der Laan, R. E. M. Neubert, C. Gerbig, C. Sirignano, J. Steinbach, U. Karstens, I. T. van der Laan-Luijkx, H. A. J. Meijer
| Format: | Article |
|---|---|
| Diterbitkan: | Copernicus Publications 2010-11-01 |
Deskripsi
We report results from our atmospheric flask sampling network for three European sites: Lutjewad in the Netherlands, Mace Head in Ireland and the North Sea F3 platform. The air samples from these stations are analyzed for their CO<sub>2</sub> and O<sub>2</sub> concentrations. In this paper we present the CO<sub>2</sub> and O<sub>2</sub> data series from these sites between 1998 and 2009, as well as the atmospheric potential oxygen (APO). The seasonal pattern and long term trends agree to a large extent between our three measurement locations. We however find a changing gradient between Mace Head and Lutjewad, both for CO<sub>2</sub> and O<sub>2</sub>. To explain the potential contribution of fossil fuel emissions to this changing gradient we use an atmospheric transport model in combination with CO<sub>2</sub> emission data and information on the fossil fuel mix per region. Using the APO trend from Mace Head we obtain an estimate for the global oceanic CO<sub>2</sub> uptake of 1.8 ± 0.8 PgC/year.