Tmin 1986-2015 90th Percentile

The current long term annual climate conditions for the 30-year period 1986-2015. The minimum daily temperature 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 mean minimum daily temperature was calculated per year for each of the six downscaled GCMs for the 30-year period. The 90th percentile values are based on the mean 30-year minimum daily temperature per year from 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`.

本数据集基于1986-2015年这30年时段的长期年度气候常态数据。研究采用了csiro、gfdl20、gfdl21、miroc、mpi、ukmo共6种不同的全球环流模式（Global Circulation Models, GCMs）模拟得到的逐日最低气温数据。上述数据由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）更新修改的立方共形大气模式（Cubic Conformal Atmospheric Model, CCAM）完成降尺度处理。针对该30年时段，为6个经降尺度处理的全球环流模式分别逐年计算其逐日最低气温的年均值。第90百分位数值基于上述6个经降尺度处理的全球环流模式的逐年逐日最低气温年均值计算得到。数据集采用栅格格式，分辨率为0.5°，使用投影经纬度坐标参考系统，其投影参数为`+proj=utm +zone=48 +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0`。