Journal Article Research Support, Non-U.S. Gov't climate change climate change impact food security wheat 1.5°C warming 142M471B3J APSIM Carbon Dioxide Fertilizers Grain Proteins Multi-model ensemble N762921K75 Nitrogen Research Support, U.S. Gov't, Non-P.H.S. Zea mays adaptation climate change adaptation crop modeling crop models ecophysiological model ensemble mean ensemble median ensemble modeling extreme low yields fertilizer use grain protein model ensemble model improvement