Sediment supply to the aeolian coastal system and the capacity of wind to transport sediment are the most important drivers for aeolian sediment transport and the growth of coastal dunes. Both these drivers vary between different locations making it difficult to predict the growth of coastal dunes. In this study we assess two locations where sediment supply, wind driven transport capacity and the response of the coastal dune has been documented. At these locations we have quantified past dune volume changes using measurement and we have used state of the art models to reproduce these changes. Models include both sediment supply and wind driven transport capacity. We have found that the differences in measured dune growth could only partly be explained by sediment supply and transport capacity. Additional processes such as marine influences to dune growth and 3D airflow effects are proposed to be included in future studies.
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