Book ; Online: A regional pCO2 climatology of the Baltic Sea from in situ pCO2 observations and a model-based extrapolation approach
eISSN: 1866-3516
2024
Abstract: ... are obtained without the need for or dependence on ancillary data (e.g. satellite sea surface ...
Abstract | Ocean surface p CO 2 estimates are of great interest for the calculation of air–sea CO 2 fluxes, oceanic uptake of anthropogenic CO 2 , and eventually the Global Carbon Budget. They are accessible from direct observations, which are discrete in space and time and thus always sparse, or from biogeochemical models, which only approximate reality. Here, a combined method for the extrapolation of p CO 2 observations is presented that uses (1) model-based patterns of variability from an empirical orthogonal function (EOF) analysis of variability with (2) observational data to constrain EOF pattern amplitudes in (3) an ensemble approach, which locally adjusts the spatial scale of the mapping to the density of the observations. Thus, data-constrained, gap- and discontinuity-free mapped fields including local error estimates are obtained without the need for or dependence on ancillary data (e.g. satellite sea surface temperature maps). This extrapolation approach is generic in that it can be applied to any oceanic or coastal region covered by a suitable model and observations. It is used here to establish a regional p CO 2 climatology of the Baltic Sea ( Bittig et al. , 2023 : https://doi.org/10.1594/PANGAEA.961119 ), largely based on ICOS-DE ship of opportunity (SOOP) Finnmaid surface p CO 2 observations between Lübeck-Travemünde (Germany) and Helsinki (Finland). The climatology can serve as improved input for atmosphere–ocean CO 2 flux estimation in this coastal environment. |
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Subject code | 551 |
Language | English |
Publishing date | 2024-02-06 |
Publishing country | de |
Document type | Book ; Online |
Database | BASE - Bielefeld Academic Search Engine (life sciences selection) |
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