Modelled fluvial flood depth and climate change depth difference data created 2004: 0.1 percent annual chance for grid reference SU

The depth difference dataset (2004) is a depth grid showing the difference between modelled fluvial flood depths and modelled fluvial flood depths under climate change conditions (an increase in peak flows of 20%). Modelled fluvial flood depth and climate change depth difference data* was created for both the 0.1% annual chance of flooding situations and was produced as a by-product from the 2004 generalised modelling project. The purpose of the generalised modelling project was to fill the gaps where there was no detailed local modelled data in 2004, in order to define the extents of Flood Zones for spatial planning. A two-dimensional hydrodynamic model called JFlow was used to produce both the modelled fluvial flood depth and modelled fluvial flood depth with climate change data. This depth difference data, using these 2 datasets, is provided on a 5x5m grid. Since 2004, some local detailed modelling projects have included scenarios for climate change however this depth difference dataset has not been updated. INFORMATION WARNING: This data is not suitable for identifying whether an individual property will flood due to climate change, for detailed decision making or for use in site specific Flood Risk or Strategic Flood Risk Assessments. Where this data is used further evidence, verification and studies should be undertaken. Climate change allowances have changed since this work was completed in 2004. More recent, accurate and local detailed modelling depth data with climate change is available for some places. Please contact your local Environment Agency office to see if detailed modelling is available for your area of interest. This metadata record is for Approval for Access product AfA480 2004 1 in 1000 Fluvial Depth Grid Climate Change Difference Modelled fluvial flood depth data with climate change are available for the whole of England, however this data is for the 100x100km squared Ordnance Survey National Grid reference SU. If you are interested in data for another grid reference refer to this Ordnance Survey National Grid document to find the relevant referencing code and search on Data.gov.uk again to download the data. Attribution statement: © Environment Agency copyright and/or database right 2016. All rights reserved. Some features of this information are based on digital spatial data licensed from the Centre for Ecology & Hydrology © NERC (CEH). Defra, Met Office and DARD Rivers Agency © Crown Copyright. © Cranfield University. © James Hutton Institute. Contains OS data © Crown copyright and database right 2015. Land & Property Services © Crown copyright and database right.本深度差异数据集（2004年版）是一类展示现状河道洪水模拟深度与气候变化情景下河道洪水模拟深度差异的深度网格数据，其中气候变化情景设定为峰值流量提升20%。 本数据集所包含的现状河道洪水模拟深度与气候变化情景下洪水深度差异数据*，均针对年超越概率0.1%的洪水工况生成，其作为2004年广义建模项目的副产品产出。该广义建模项目的初衷是填补2004年时缺乏详细局地模拟数据的空白，以明确洪水分区范围，服务于空间规划工作。 本次模拟的现状河道洪水深度与气候变化情景下河道洪水深度数据，均采用名为JFlow的二维水动力模型生成。基于上述两类数据集得到的深度差异数据，以5米×5米的网格形式提供。 自2004年以来，部分局地详细建模项目已纳入气候变化情景，但本深度差异数据集至今未进行更新。 信息警示：本数据不适用于识别单个物业是否会因气候变化遭受洪水、用于精细化决策，或应用于特定场地的洪水风险评估或战略洪水风险评估。若使用本数据，需开展进一步的论证、验证与相关研究。自2004年本研究完成以来，气候变化的考量标准已发生变化。 部分地区现已提供更新、精准且包含气候变化情景的局地详细模拟深度数据。请联系您当地的环境署办公室，查询您关注区域是否有可用的详细建模数据。 本元数据记录对应【访问许可产品AfA480 2004年1/1000年一遇河道洪水深度网格-气候变化差异】。 包含气候变化情景的河道洪水模拟深度数据已覆盖英格兰全境，但本数据集仅对应英国地形测量局（Ordnance Survey，OS）国家网格参考系SU的100km×100km方格区域。若您需要其他网格参考系的数据，请查阅该Ordnance Survey国家网格文档获取相关参考编码，并前往Data.gov.uk平台重新搜索下载对应数据。 版权声明：© 英国环境署（Environment Agency）版权及/或数据库权利 2016。保留所有权利。本信息的部分内容基于由生态与水文学中心（Centre for Ecology & Hydrology，CEH）授权的数字空间数据制作，© 英国自然环境研究委员会（NERC）。英国环境、食品与农村事务部（Defra）、英国气象局（Met Office）及北爱尔兰农业、环境与乡村事务部河流署（DARD Rivers Agency）© 皇家版权。© 克兰菲尔德大学（Cranfield University）。© 詹姆斯·赫顿研究所（James Hutton Institute）。包含OS数据 © 皇家版权及数据库权利 2015。土地与物业服务处 © 皇家版权及数据库权利。