Modelled fluvial flood depth and climate change depth difference data created 2004: 1 percent annual chance for grid reference SO

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 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 100 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 SO. 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.本深度差值数据集（2004年版）系展示常规模拟河道洪水水深与气候变化情景下（峰值流量提升20%）模拟河道洪水水深差值的深度栅格数据集。 本数据集所涵盖的模拟河道洪水水深及气候变化深度差值数据*，均针对年超越概率1%的洪水工况生成，系2004年通用建模项目的附带产出成果。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，用于划定空间规划所需的洪水风险区范围。 本次建模采用名为JFlow的二维水动力模型，生成了常规模拟河道洪水水深与气候变化情景下的河道洪水水深数据。基于上述两组数据集计算得到的深度差值数据，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，但本深度差值数据集未进行更新。 数据使用提示：本数据不适用于识别单宗物业是否会因气候变化遭受洪涝，亦不可用于精细化决策或场地专属洪水风险、战略洪水风险评估。若使用本数据，需开展额外的佐证、验证与研究工作。自2004年本数据集完成编制以来，气候变化预估标准已发生变更。 部分地区已获取更新、精准且包含气候变化情景的当地详细模拟洪水水深数据。可联系当地环境署办公室，查询目标区域是否有相关详细建模数据。 本元数据记录对应准入许可产品AfA480：2004年版1/100年一遇河道洪水水深栅格气候变化差值数据。 含气候变化情景的模拟河道洪水水深数据可覆盖英格兰全境，但本数据集仅对应英国地形测量局国家坐标格网（Ordnance Survey National Grid）中100km×100km的SO区块。若需其他坐标格网区块的数据，请参阅该英国地形测量局国家坐标格网文档获取对应编码，随后至Data.gov.uk平台再次检索下载。 署名声明：© 英国环境署2016年版权及/或数据库权益，保留所有权利。本信息部分内容基于由生态与水文中心（Centre for Ecology & Hydrology, © NERC (CEH)）授权的数字空间数据。Defra、英国气象局及DARD河流局 © 皇家版权。© 克兰菲尔德大学。© 詹姆斯·赫顿研究所。本数据集包含英国地形测量局数据 © 皇家版权及数据库权益2015年。土地与物业服务处 © 皇家版权及数据库权益。