Great Artesian Basin groundwater flow model scenario outputs: GABtran 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 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).The raster grids "Cdry.grd"", "Cmid.grd" and "Cwet.grd" show predicted hydraulic head for the year 2070 based on projections of future climate and the continuation of current rates of groundwater extraction The files "Cdry-Base.grd", "Cmid-Base.grd" and ""Cwet-Base.grd" represent predicted differences between the hydraulic heads produced by Scenario C at 2070, and the modelled spatial distributions of hydraulic head for the year 2010 (Base scenario).The files "Cdry-A.grd", "Cmid-A.grd" and "Cwet-A.grd" represent predicted differences between hydraulic heads for 2070 produced by Scenario C and the current climate and development scenario (Scenario A).'No data' value is 1e30Cell size is 5000m x 5000mThis 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.

本数据集包含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）地下水位的影响。本次建模共考虑四类气候与地下水开发情景：情景A（历史气候条件与当前开发水平）、情景C（未来气候条件与当前开发水平）以及情景D（未来气候条件与未来开发水平）。其中未来气候情景涵盖极端湿润（wet）、中等（mid）与极端干旱（dry）三种亚型。栅格文件“Cdry.grd”、“Cmid.grd”与“Cwet.grd”展示了基于未来气候预测与当前地下水抽取速率延续条件下，2070年的预测地下水水头值。文件“Cdry-Base.grd”、“Cmid-Base.grd”与“Cwet-Base.grd”代表情景C在2070年模拟得到的地下水水头，与2010年（基准情景，Base scenario）的地下水水头空间分布模拟值之间的预测差值。文件“Cdry-A.grd”、“Cmid-A.grd”与“Cwet-A.grd”代表情景C在2070年模拟得到的地下水水头，与当前气候及开发情景（情景A）的地下水水头之间的预测差值。无数据值设定为1e30。栅格单元尺寸为5000米×5000米。本数据集及配套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制作完成。如需获取更多信息，请参考Welsh WD、Moore CR、Turnadge CJ、Smith AJ与Barr TM（2012）发表的技术报告《气候变化与地下水开发建模：澳大利亚政府委托CSIRO大自流盆地水资源评估项目技术报告》（"Modelling of climate and groundwater development. A technical report to the Australian Government from the CSIRO Great Artesian Basin Water Resource Assessment"），该报告隶属于澳大利亚CSIRO健康国家水资源旗舰项目。数据投影采用阿尔伯斯等面积圆锥投影（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。