Employing Spectral Radiation for Enhanced Modeling of Biogeochemistry and Carbon Cycling
Doctoral Researcher:
Anna Broschke, AWI and University of Bremen, anna.broschke@awi.de
Supervisors:
- Dr. Lars Nerger, AWI
- Prof. Andreas Rademacher, University of Bremen
- Prof. Stephan Frickenhaus, AWI
Location: Bremerhaven
Disciplines:
Keywords: Marine Biogeochemical Modeling, Spectral Ocean-color Data, Data Assimilation
Motivation: This project aims to improve marine biogeochemical and carbon cycle models to better predict how climate change affects ocean ecosystems. It focuses on enhancing the representation of different phytoplankton groups by assimilating spectral satellite ocean-color data, which provide more detailed information on light absorption and reflection than traditional chlorophyll observations.
By combining an advanced ocean–biogeochemical model with ensemble-based data assimilation methods, the project integrates satellite observations and model simulations while accounting for uncertainties. Sensitivity analyses and long-term reanalysis experiments will assess how spectral light information influences phytoplankton communities, optical properties, and carbon cycling. Overall, the project will significantly advance the use of satellite ocean-color data to improve predictions of marine ecosystem responses to climate change.
