e-book
Marine Climate and Climate Change: Storms, Wind Waves and Storm Surges
Having been involved for more than 15 years in wind, wave, and storm surge research,
we have been in contact with many people having different interests in these topics.
Most of them were seeking long time series of data over the often poorly sampled
coastal, offshore, and ocean regions. We have collaborated with a shipyard developing
RoRo and RoPax ferries operating on fixed routes. Environmental conditions such as
sea states or currents to be expected on these routes during the lifetime of a vessel to
them was a critical issue. Companies involved in the design and operation of offshore
wind farms were interested in extreme sea states and loads to be expected at their sites,
but also in the frequency and duration of fair-weather windows that can be used to
mount or to maintain their equipment. Oil and gas producers were concerned about
possible future changes in the wind, wave, and storm surge climate because they wish
to guarantee present safety levels for their platforms and equipment in the future as
well. And, of course, coastal engineers were asking for statistics of sea level extremes to
be used for coastal protection planning.
Despite the different interests, long time series of wind, waves, or water levels were
of primary importance to all of them. Over the oceans, such data are seldom available
and often data from computer models are used instead. We have been involved in the
development of such computer-generated data for many years and we know that there
are numerous pitfalls in the use of these data. We feel that a thorough understanding
of the basics and principles behind such data can help in successfully applying
them and in improving their benefits. This book therefore provides an introduction
to the climate system and to climate variability. It describes and discusses high-impact
marine weather phenomena such as tropical and extra-tropical cyclones, wind
waves, tides, storm surges, and mean sea level. The book further provides an
overview about computer models used for simulating these phenomena, discusses
their use for generating computer data that are, in many cases, used as a replacement
for the often limited or missing measurements, and illustrates the numerous
pitfalls one may encounter in applying such data. Eventually, we review what
presently (as ofearly 2009) is known about past and future marine climate change and
variability.
In more detail, Chapter 1 provides an introduction to climate and climate
variability. It explains the concepts that are fundamental for our understanding of
the functioning of the system and its fluctuations. Emphasis is put on the concept of
different scales and their interplay, as well as on externally and internally driven
climate variability.
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