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

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 NY. 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）为一类深度栅格数据，用于展示常规河流洪水模拟深度与气候变化条件下（峰值流量提升20%）的河流洪水模拟深度之间的差值。 模拟河流洪水深度与气候变化情景下的深度差异数据*，均针对年度洪水发生概率0.1%的情景生成，是2004年通用建模项目的附带产出。该通用建模项目的初衷是填补2004年当地缺乏详细模拟数据的空白，以明确洪水区（Flood Zones）的范围，服务于空间规划工作。 本次研究采用名为JFlow的二维水动力模型（two-dimensional hydrodynamic model），生成常规河流洪水模拟深度与气候变化情景下的河流洪水模拟深度两类数据；基于这两类数据集得到的深度差异数据，以5米×5米的栅格格式提供。 自2004年以来，部分当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并未进行更新。 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，或应用于特定场地洪水风险评估与战略洪水风险评估。若使用本数据，需开展额外的证据收集、验证与研究工作。自2004年本数据集完成编制以来，气候变化容限参数已发生变更。 部分地区已可获取更新、更精准且纳入气候变化情景的当地详细模拟深度数据。您可联系当地环境署办公室，查询感兴趣区域是否有可用的详细建模数据。 本元数据记录对应准入审批产品AfA480：2004年千年一遇（年发生概率0.1%）河流洪水深度栅格气候变化差值数据。 纳入气候变化情景的河流洪水模拟深度数据覆盖英格兰全境，但本数据集仅对应英国地形测量局国家格网（Ordnance Survey National Grid）参考系统中100km×100km的NY区块。若您需要其他格网参考系的数据，请参阅该英国地形测量局国家格网文档获取对应参考编码，随后在数据.gov.uk（Data.gov.uk）平台重新搜索并下载所需数据。 版权声明：© 英国环境署2016年版权及/或数据库权利保留。保留所有权利。本信息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，© 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局（DARD Rivers Agency） © 王室版权。© 克兰菲尔德大学（Cranfield University）。© 詹姆斯·赫顿研究所（James Hutton Institute）。包含英国地形测量局（Ordnance Survey, OS）数据 © 王室版权及数据库权利2015年。土地与产权服务局 © 王室版权及数据库权利。