As a consequence of global sea level rise, more frequent and
more extreme high sea levels need to be anticipated.
With increasing awareness, politicians and other stakeholders
are becoming interested in the implications of this development
and in adequate response actions.
In particular urban areas need to be protected since
they host enormous assets in several regions worldwide.
Thus, it is the quest to identify exposed domains,
characterize their proneness, and estimate the associated risks.
This requires the application of established methods as well as
the development of more sophisticated ones, i.e. for the
assessment of extreme events, damages, and risks.
Furthermore, optimal solutions of adaptation not only need to be
efficient but in particular sustainable with respect to
environment, society, and economy.

Despite global sea level trends, strong deviations occur on the
local spatial scale.
Accordingly, it is indispensable to consider regional scales and to
investigate case studies, such as the North/Baltic Sea coasts, or
from developing countries in order to investigate generalized methods
and theories.