Tmax A2 Change between 2000 and 2050 Median

ºC change in maximum daily temperature per year between 1986-2015 and 2036 - 2065. The mean annual maximum daily temperature for each downscaled global circulation model (GCM), i.e. csiro, gfdla20, gfdl21, miroc, mpi and ukmo using the Cubic Conformal Atmospheric Model (CCAM) developed by CSIRO (Australia) and updated and modified by the CSIR (South Africa) was calculated for each of the 30 year periods. The absolute difference between the two periods is based on the mean annual maximum daily temperature value and is calculated as follows: (Tmax2050-Tmax2000) for each of the six downscaled GCM models. The 50th percentile (median value) is based on these differences. 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`.`.

本数据集表征1986-2015年与2036-2065年两个时段内，每年每日最高气温的摄氏度变化量。研究针对6个经降尺度处理的全球环流模式（Global Circulation Model, GCM）——即csiro、gfdla20、gfdl21、miroc、mpi及ukmo，采用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）更新改进的三次保角大气模式（Cubic Conformal Atmospheric Model, CCAM），分别计算了两个30年时段的年平均每日最高气温。两个时段的绝对差值以年平均每日最高气温值为基准，计算方式为针对6个降尺度GCM分别计算（Tmax2050-Tmax2000）。基于上述差值可得到第50百分位数（即中位数）。数据集采用栅格格式存储，分辨率为0.5°，使用投影纬度/经度坐标参考系统，其投影参数为`+proj=utm +zone=48 +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0`。