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Service Description: Datasets used in the analysis include: 1) Urban Morphological Zone (UMZ) from Urban Atlas 2012. UMZ is the reference unit for the city morphology. They are regarded as the best approximation of the βrealβ city formand defined as a set of urban areas laying less than 200 m apart, within the core city administrative boundaries). 2) LISFLOOD model outputs from JRC. The discharge return levels were derived for every river pixel for return periods of 100 years. For time window of 30 years (2071β2100), a Gumbel distribution was fitted to the annual maximum discharges simulated by LISFLOOD in every grid cell of the modelled domain based on 12 models and the A1B scenario (Rojas et al.,2012; Rojas et al.,2013). The resultant modelled flood area was intersected with the Urban Morphological Zone extent, and the proportion of potentially flooded UMZ area was calculated for each city by dividing the potentially flooded area by the total UMZ area.
Importantly, the indicator is based on elevation and does not includecurrently existing or plannedflood protection measures like dams, dikes, etc., as data for these are not yet available. Areas shown here as potentially at risk of flood might in reality be protected by flood defences. However, since flood protection measures can fail in certain circumstances, the flood risk remains.
Map Name: Percentage of UMZ potentially exposed to river flooding (1 in 100 years return period; 2071 - 2100)
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Description: The map shows the proportion of the city's Urban Morphological Zone (densely built-up urban area) potentially at risk of river flooding (1 in 100 years return period), modelled for the future (period of 2071 - 2100). This is based on the modelling of river discharge within Lisflood model (JRC).
Copyright Text: Datasets: JRC (Lisflood model); Copernicus (Urban Atlas 2012); Eurostat (city boundaries); EEA (Urban Morphological Zone).Methodology: Rojas, R., Feyen, L., Bianchi, A. and Dosio, A., 2012, ‘Assessment of future flood hazard in Europe using a large ensemble of bias corrected regional climate simulations’, Journal of Geophysical Research, 117(17) D17109; Rojas, R., Feyen, L. and Watkiss, P., 2013, ‘Climate change and river floods in the European Union: socio- economic consequences and the costs and benefits of adaptation’, Global Environmental Change, (23) 1737–1751.
Spatial Reference:
102100
(3857)
Single Fused Map Cache: false
Initial Extent:
XMin: -2719117.122114999
YMin: 2846598.8250850094
XMax: 4022122.8936150055
YMax: 1.1338060635015002E7
Spatial Reference: 102100
(3857)
Full Extent:
XMin: -2412697.1213999987
YMin: 3232574.361900009
XMax: 3715702.892900005
YMax: 1.09520850982E7
Spatial Reference: 102100
(3857)
Units: esriMeters
Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP
Document Info:
Title: Proportion of UMZ at risk of flooding (2071 - 2100)
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Comments: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 11 0;"><SPAN STYLE="font-size:14pt">Datasets used in the analysis include: </SPAN><SPAN STYLE="font-size:14pt">1) </SPAN><SPAN STYLE="font-size:14pt">Urban Morphological Zone (UMZ) from Urban Atlas 2012. UMZ is the reference unit for the city morphology. They are regarded as the best approximation of the “real” city formand defined as a set of urban areas laying less than 200 m apart, within the core city administrative boundaries)</SPAN><SPAN STYLE="font-size:14pt">. 2) </SPAN><SPAN STYLE="font-size:14pt">LISFLOOD model outputs from JRC. The discharge return levels were derived for every river pixel for return periods of 100 years. For time window of 30 years (2071–2100), a Gumbel distribution was fitted to the annual maximum discharges simulated by LISFLOOD in every grid cell of the modelled domain based on 12 models and the A1B scenario (Rojas et al.,2012; Rojas et al.,2013). The resultant modelled flood area was intersected with the Urban Morphological Zone extent, and the proportion of potentially flooded UMZ area was calculated for each city by dividing the potentially flooded area by the total UMZ area. </SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN STYLE="font-size:14pt">Importantly, the indicator is based on elevation and does not include</SPAN><SPAN STYLE="font-size:14pt">currently existing or planned</SPAN><SPAN STYLE="font-size:14pt">flood protection measures like dams, dikes, etc., as data for these are not yet available. Areas shown here as potentially at risk of flood might in reality be protected by flood defences. However, since flood protection measures can fail in certain circumstances, the flood risk remains.</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Subject: The map shows the proportion of the urban morphological zone (UMZ, i.e. densely built-up urban area) within core city administrative boundaries that is potentially exposed to river flooding at the return period of 1 in 100 years, taking into account climate change (modelled for period 2071 - 2100). The extent of area that may be exposed to river flooding is an important indicator of flood risk and should be considered in planning of adaptation to climate change.
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Keywords: river flooding; flood; climate change; risk; disaster
AntialiasingMode: None
TextAntialiasingMode: Force
Supports Dynamic Layers: true
MaxRecordCount: 1000
MaxImageHeight: 4096
MaxImageWidth: 4096
Supported Query Formats: JSON, geoJSON, PBF
Supports Query Data Elements: true
Min Scale: 0
Max Scale: 0
Supports Datum Transformation: true
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