Bias-corrected d4PDF historical and non-warming counterfactual climate simulation data

The bias-corrected d4PDF dataset offers daily data of 10 climatic variables over the globe from 1951 to 2010. Data from the historical experiment and non-warming counterfactual simulation are available (at this moment, there is no plan to conduct bias-correction of data from the +4 degC experiment). See Shiogama et al. (2016), Mizuta et al. (2017) and Imada et al. (2017) for details on the original d4PDF database. For each simulation, data for 100-member ensemble are available. The data over the sea and Antarctica are not bias-corrected (i.e., the raw data of the MRI-AGCM3.2 (Mizuta et al., 2012) were used), whereas those over the land are bias-corrected using S14FD meteorological forecing dataset (doi:10.20783/DIAS.523) as the baseline. Variables include daily mean 2m air temperature (tave2m, °C), daily maximum 2m air temperature (tmax2m, °C), daily minimum 2m air temperature (tmin2m, °C), daily total precipitation (precsfc, mm d-1), daily mean downward shortwave radiation flux (dswrfsfc, W m-2), daily mean downward longwave radiation flux (dlwrfsfc, W m-2), daily mean 2m relative humidity (rh2m, %), daily mean 2m specific humidity (spfh2m, kg kg-1), daily mean 10m wind speed (wind10m, m s-1) and daily mean surface pressure (pressfc, hPa).

偏差校正后的d4PDF数据集提供了1951年至2010年全球范围内10种气候变量的逐日数据。该数据集涵盖历史试验与无变暖反事实模拟的相关数据（当前暂无对+4℃升温试验数据开展偏差校正的计划）。有关原始d4PDF数据库的详细信息，请参考Shiogama等（2016）、Mizuta等（2017）及Imada等（2017）的研究成果。每类模拟均提供100个成员的集合模拟数据。海洋与南极区域的数据未进行偏差校正，即直接采用MRI-AGCM3.2模式（Mizuta等，2012）的原始数据，而陆地区域的数据则以S14FD气象强迫数据集（doi:10.20783/DIAS.523）为基准完成了偏差校正。该数据集包含的气候变量如下：2米气温日均值（tave2m，℃）、2米日最高气温（tmax2m，℃）、2米日最低气温（tmin2m，℃）、日总降水量（precsfc，mm d⁻¹）、日平均向下短波辐射通量（dswrfsfc，W·m⁻²）、日平均向下长波辐射通量（dlwrfsfc，W·m⁻²）、2米相对湿度日均值（rh2m，%）、2米比湿日均值（spfh2m，kg·kg⁻¹）、10米风速日均值（wind10m，m·s⁻¹）以及地面气压日均值（pressfc，hPa）。