Windstorm: Dynamic Pressure at return period 100 years

The Windstorm Risk Maps show peak wind gusts and their dynamic pressure and the corresponding uncertainties. The maps provide a country-wide basis for the estimation of the regional windstorm risk, however they do not replace the Dynamic Pressure Reference (Standard SIA 261 Annex E). The windstorm risk is calculated on the basis of 83 winter storm periods between 1871 and 2011 and the 20th Century Reanalysis global data. Local influences, summer storms and thunder squalls were not taken into account in the calculations. The values specified for the peak wind gusts should not, therefore, be interpreted as absolutely accurate values and do not replace any location-specific reports. The peak wind gusts are underestimated for exposed Alpine locations (e.g. Jungfraujoch), in particular.本风暴风险地图（Windstorm Risk Maps）展示了极大阵风风速、相关动压及其对应的不确定性。该地图可为区域风暴风险评估提供全国性参考依据，但不可替代动压参考标准（Standard SIA 261 Annex E）。本次风暴风险的计算基于1871年至2011年间的83次冬季风暴事件，以及20世纪再分析全球数据集。计算过程未纳入局地影响、夏季风暴及雷飑等因素。因此，标注的极大阵风风速数值不应被视为绝对准确值，亦不可替代任何针对特定地点的专项报告。尤其对于暴露型阿尔卑斯山区点位（如少女峰Jungfraujoch），极大阵风风速的计算值存在低估情况。