River Flood Maps (FRM_FH_RIVER_EXTENT_M_CC)

The following probabilities are available for river flooding: - High - 10 year return period - Medium - 200 year return period - Low - 1000 year return period and 200 year return period plus climate change using the UKCP09 high emissions scenario for the 2080s.The river hazard maps show (where available): - Flood extent - Flood depth - Flood velocities where appropriate. The climate change scenario has been defined by United Kingdom Climate Projection 2009 (UKCP09) predictions for 2080 high emissions 95%ile predictions. Medium and low probability flood events were selected for consistency with return periods used in Scottish Planning Policy, whereas the high probability was chosen as it is reflective of observed events experienced over the last few decades.本数据集提供以下河流洪水概率等级： - 高概率：对应10年一遇重现期 - 中概率：对应200年一遇重现期 - 低概率：包含1000年一遇重现期，以及基于英国气候预测2009（UKCP09）2080年代高排放情景的气候变化修正后的200年一遇重现期 本次河流灾害地图（如可获取）将展示以下内容： - 洪水淹没范围 - 洪水水深 - 适用场景下的洪水流速 该气候变化情景基于英国气候预测2009（UKCP09）针对2080年高排放情景的95%分位数预测结果设定。 本次研究选取中等和低概率洪水事件，以匹配苏格兰规划政策中采用的重现期标准；而高概率等级的选取则契合了近数十年来实际观测到的洪水事件特征。