AgMIP's global gridded crop model intercomparison (GGCMI) phase II CTWN-A archive: priority 1 outputs from LPJmL spring wheat simulations

This data set contains output data from simulations with the model LPJmL for spring wheat as part of AgMIP's Global Gridded Crop Model Intercomparison (GGCMI) phase II output data set. Output variables included are: crop yield, above-ground biomass, planting day, maturity day, potential irrigation water withdrawal, actual growing season evapotranspiration . Simulations are based on 31-year simulations using the AgMERRA data set with 4 atmospheric CO2 mixing ratios (C=360, 510, 660, 810 ppm) uniform offsets for temperature (T= -1, 0, 1, 2, 3, 4, 6 K), water (W= -50, -30, -20, -10, 0, 10, 20, 30 %, and infinite/irrigated), and 3 nitrogen input levels (N= 10, 60, 200 kgN/ha) using 2 assumptions on adaptation (A= 'none', 'regain original growing season'). Version 2 of these files has been corrected with respect to the temporal sequence of results, which is not important if looking at 30-year averages as in Franke et al. 2020, but becomes relevant if looking at individual years.本数据集包含LPJmL模型针对春小麦开展的模拟输出数据，属于AgMIP全球网格化作物模型比对计划（Global Gridded Crop Model Intercomparison, GGCMI）第二阶段输出数据集的组成部分。所包含的输出变量如下：作物产量、地上生物量、播种期、成熟期、潜在灌溉需水量、实际生长期蒸散量。本次模拟采用AgMERRA数据集开展31年时长的模拟试验，共设置4组大气CO₂体积混合比梯度（C=360、510、660、810 ppm）、7组温度均匀偏移量（T=-1、0、1、2、3、4、6 K）、8组水分均匀偏移量（W=-50、-30、-20、-10、0、10、20、30%，以及无限灌溉/常规灌溉）、3组氮肥投入水平（N=10、60、200 kgN/ha），并采用2种适应假设方案（A='无适应'、'恢复原生长期'）。本数据集的V2版本针对模拟结果的时间序列进行了修正：若仅如Franke等人2020年的研究那般关注30年平均值，则该修正无实际意义；但若针对单一年份开展分析，则该修正具备重要价值。