Great Artesian Basin groundwater flow model scenario outputs: Cape York model: Climate change

Modelled groundwater levels from 2010 to 2070 used to estimate the impact of climate change and future groundwater resource development on groundwater levels in the Cape York area of the GAB.The modelling considered different scenarios of climate and groundwater development: Scenario A (historical climate and current development); Scenario C (future climate and current development) and Scenario D (future climate and future development). The future climate scenarios included the wet extreme (wet), the median (mid) and the dry extreme (dry).This data set contains spatial data that were created from the outputs from climate change scenario models using on the Cape York groundwater flow model.The subfolder "heads" contains various raster grid representations of spatial distributions of hydraulic head for the year 2070 that were output by the respective climate change scenario model, based on projections of future climate. For each climate change scenario there are three outputs: one for each modelled aquifer thickness (100, 150 and 200metres). The folder "differences" contains various raster grid representations of differences between the spatial distributions of hydraulic head that were output by climate change scenario models and by either (a) the respective "A scenario" model or (b) the respective "Base scenario" model (the modelled hydraulic head for the year 2010.)'No data' value is 1e30 for heads rasters, -9999 for differences rasters Cell size is 5000 m x 5000 mThis data and metadata were produced by CSIRO for the Great Artesian Basin Water Resource Assessment. For more information, please refer to Welsh WD, Moore CR, Turnadge CJ, Smith AJ and Barr TM (2012), "Modelling of climate and groundwater development. A technical report to the Australian Government from the CSIRO Great Artesian Basin Water Resource Assessment ". CSIRO Water for a Healthy Country Flagship, Australia.Projection is Albers equal area conic, with central meridian 143 degrees longitude, standard parallels at -21 and -29 degrees latitude and latitude of projection's origin at -25.

本数据集涵盖2010年至2070年的模拟地下水位数据，用于评估气候变化与未来地下水资源开发对大自流盆地（Great Artesian Basin, GAB）约克角（Cape York）区域地下水位的影响。本次模拟考量了多组气候与地下水开发情景：情景A（历史气候+当前开发模式）、情景C（未来气候+当前开发模式）以及情景D（未来气候+未来开发模式）。未来气候情景包含极端湿润（wet）、中等（mid）与极端干旱（dry）三类。本数据集包含基于气候变化情景模型输出结果、依托约克角地下水流模型生成的空间数据。子文件夹"heads"中存储了多组栅格网格数据，用于呈现基于未来气候预测、由对应气候变化情景模型输出的2070年水力水头空间分布。针对每一类气候变化情景，均包含三组输出结果，分别对应模拟得到的100米、150米及200米含水层厚度工况。子文件夹"differences"中存储了多组栅格网格数据，用于呈现气候变化情景模型输出的水力水头空间分布与（a）对应情景A模型，或（b）对应基准情景（即2010年模拟水力水头）模型输出结果之间的差值分布。栅格数据的无数据值设定为：水头栅格为1e30，差值栅格为-9999。栅格单元尺寸为5000米×5000米。本数据集及元数据由澳大利亚联邦科学与工业研究组织（Commonwealth Scientific and Industrial Research Organisation, CSIRO）为大自流盆地水资源评估项目编制。如需获取更多信息，请参考Welsh WD、Moore CR、Turnadge CJ、Smith AJ及Barr TM于2012年发表的《气候与地下水开发模拟——澳大利亚联邦科学与工业研究组织大自流盆地水资源评估项目提交给澳大利亚政府的技术报告》，该报告隶属于澳大利亚CSIRO“健康国家水资源”旗舰项目。投影方式采用阿尔伯斯等积圆锥投影（Albers equal area conic），中央经线为东经143度，标准纬线为南纬21度与南纬29度，投影原点纬度为南纬25度。