Rain 1986-2015 10th Percentile

The current long term annual climate conditions for the 30-year period 1986-2015. The total daily rainfall values simulated by six different global circulation models (GCMs), i.e. csiro, gfdl20, gfdl21, miroc, mpi, and ukmo were downscaled with the Cubic Conformal Atmospheric Model (CCAM) developed by CSIRO (Australia) and updated and modified by the CSIR (South Africa). The daily rainfall values were summed to yearly totals and the mean annual total rainfall were calculated for each downscaled global circulation model for the 30 year period. The 10th percentile values are based on the mean annual rainfall values for the six downscaled GCMs. Data are in raster format with a 0.5º resolution using a projected latitude / longitude coordinate reference system with `+proj=utm +zone=48 +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0`.

本数据集涵盖1986-2015年这30年时段的长期年均气候条件。由6套不同全球环流模式（Global Circulation Models, GCMs）——即csiro、gfdl20、gfdl21、miroc、mpi及ukmo——模拟得到的逐日降雨量数值，经澳大利亚联邦科学与工业研究组织（CSIRO）研发、南非科学与工业研究委员会（CSIR）更新修正的三次共形大气模式（Cubic Conformal Atmospheric Model, CCAM）完成降尺度处理。将上述经降尺度处理的逐日降雨量数值累加为年降雨量总量，并针对该30年时段内的每套降尺度全球环流模式，计算其对应时段的年均降雨总量平均值。第10百分位值基于上述六套降尺度全球环流模式的年均降雨量均值计算得到。数据集采用栅格格式，分辨率为0.5º，使用投影经纬度坐标参考系统，其参数为`+proj=utm +zone=48 +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0`。