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This work presents a one-dimensional simulation of the seasonal changes in CO 2 partial pressure (pCO 2 ). The results of the model were constrained using data from observations, which improved the model’s ability to estimate nitrogen fixation in the central Baltic Sea and allowed the impact of nitrogen fixation on the ecological state of the Baltic Sea to be studied. The model used...
Organic matter production and nitrogen fixation in the central Baltic Sea were studied on the basis of high-resolution CO 2 partial pressure data that were obtained from an automated measurement system deployed on a cargo ship. The net organic carbon (OC) production was calculated from a surface water CO 2 mass balance and used to estimate the nitrogen uptake by organic matter during...
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