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Indicator Assessment
Storm index for various parts of Europe 1881-2005
Note: Positive values of the index mean higher storminess.
Matulla, C.; Schöner, W.; Alexandersson, H.; von Storch, H. and Wang. X. L., 2007. European storminess: late nineteenth century to present. Climate Dynamics, DOI 10.1007/s00382-007-0333-y. See read free version: here.
Projected relative change of annual maximum daily mean wind speed between 1961-2000 and 2050 using different models
Note: Data are calculated for 10 m height using the + 2 oC scenario for 2050 (IPCC-SRES A1B emission scenarios) and the reference climate (1961-2000) from three similar models (left) and one different model, MIROCHi (right).
van den Hurk, B.; Klein Tank, A.; Lenderink. G.; van Ulden, A.; van Oldenborgh, G. J.; Katsman, C.; van den Brink, H.; Keller, F.; Bessembinder, J.; Burgers, G.; Komen, G.; Hazeleger, W. and Sybren Drijfhout, S., 2006. KNMI Climate Change Scenarios 2006 for the Netherlands, KNMI Scientific Report WR 2006-01, 3730 AE De Bilt.
Change in the height of a 50-year return period extreme water level event to the end of the 21st century for different scenarios
Note: The water level is measured relative to the present day tide, due to changes in atmospheric storminess, an increase in mean sea level and vertical land movements
Lowe, J. A. and Gregory, J. M., 2005. The effects of climate change on storm surges around the United Kingdom. Proceedings of the Royal Society of London. Series A: 363: 1313-1328.
Storminess in Europe has shown considerable variation over the past century, but with no clear long-term trend. This is illustrated by means of the storm-index time series (Figure 1), based on air-pressure data. These series show that storminess in north-western, northern and central Europe was relatively high during the late 19th and early 20th century; then decreased in central Europe and northern Europe. The subsequent rise in the late 20th century was most pronounced in north-western Europe, while slow and steady in central Europe. Most recent years have shown average or calm conditions (Matulla et al., 2007). On the local scale, station wind data can show different behaviour. Decreases and increases continuing over several decades can be seen at particular locations. For example a strong decrease in wind storms has been observed over the Netherlands during the past 40 years (Smits et al., 2005).
Evaluating high tide levels along the North Sea in the past century showed clear changes in mean levels (related to sea-level rise) but no storm-related variations (von Storch et al., 2002). Similarly, in the northern Adriatic Sea the trends for high sea levels and the subsequent occurrence of storm surges can not be associated with any trends in storminess (Lionello, 2005).
Extra-tropical storm tracks are projected to move pole-ward, with consequent changes in wind, precipitation, and temperature patterns, continuing the observed trends over the last half-century (IPCC, 2007a). The total number of storms is projected to decrease, but the strengths of the heaviest storms may increase, depending on the model used (see Figure 2 showing different regional maximum wind distributions with different models). Note that these projections are still very uncertain and model-dependent.
During historic times, storminess and large-scale temperature variations were mostly decoupled, but the projections show a closer relationship. Some projections, based on the high emissions IPCC SRES A2 scenario, show a related increase in temperature and the frequency of heavy storms in the North Atlantic Ocean. The future storminess in this region depends on projections of sea surface temperature, retreat of Arctic ice and changes in the air pressure field (Fischer-Bruns et al., 2005).
Projections of storm surges are closely connected with future storminess. The projections for the end of 21st century show a significant increase of storm surge elevations for the continental North Sea coast, by between 15 and almost 25 cm (Woth, 2005). For the UK coastline, a large increase in relative surge height is projected for the high IPCC SRES scenario A2 and the intermediate scenario B2, especially along the south-east coast of England, where the changes in storminess will have their largest effect and where the land is sinking most rapidly (Lowe and Gregory, 2005; Figure 3).
In April 2009 the European Commission presented a White Paper on the framework for adaptation policies and measures to reduce the European Union's vulnerability to the impacts of climate change. The aim is to increase the resilience to climate change of health, property and the productive functions of land, inter alia by improving the management of water resources and ecosystems. More knowledge is needed on climate impact and vulnerability but a considerable amount of information and research already exists which can be shared better through a proposed Clearing House Mechanism. The White Paper stresses the need to mainstream adaptation into existing and new EU policies. A number of Member States have already taken action and several have prepared national adaptation plans. The EU is also developing actions to enhance and finance adaptation in developing countries as part of a new post-2012 global climate agreement expected in Copenhagen (Dec. 2009). For more information see: http://ec.europa.eu/environment/climat/adaptation/index_en.htm
No targets have been specified
No related policy documents have been specified
http://www.eea.europa.eu/publications/eea_report_2008_4/pp193-207CC2008_ch8_Data_gaps.pdf
No methodology references available.
http://www.eea.europa.eu/publications/eea_report_2008_4/pp193-207CC2008_ch8_Data_gaps.pdf
http://www.eea.europa.eu/publications/eea_report_2008_4/pp193-207CC2008_ch8_Data_gaps.pdf
No uncertainty has been specified
For references, please go to https://www.eea.europa.eu/data-and-maps/indicators/storms-and-storm-surges-in-europe/storms-and-storm-surges-in or scan the QR code.
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