An inter-comparison of potato crop models was previously undertaken to assess the uncertainty in yield predictions centered at four different production centers across the world. This prior study included an assessment of hypothetical shifts in atmospheric carbon dioxide concentration (C), air temperature (T), and rainfall (W) at each location. Current research reflects a new international initiative to ascertain the response of an ensemble of potato models to changes in C concentration as empirically measured at eight separate open-top chamber and free-air CO2 enrichment systems throughout Europe. All locations utilized similar management conditions as well the Bintje variety. Modelers were provided with data sets at two of these locations at ambient C levels only for calibration purposes. The same calibration was then applied to simulating responses at ambient C for the remaining six locations as well as that at elevated C for all eight locations. Expected outcomes from this research will include assessing the capability of the ensemble of crop models to accurately replicate potato yields under elevated C as well as evaluating the stability of model calibration across multiple locations. Results will highlight accuracy among the models with respect to making single-factor regional climate change predictions, the modeling knowledge gaps needed to improve versatility of these decision support tools, and potential pitfalls associated the available experimental datasets.
|Publication status||Published - 2018|
|Event||2018 ASA and CSSA Meeting - Baltimore, MD, United States|
Duration: 4 Nov 2018 → 7 Nov 2018
|Conference||2018 ASA and CSSA Meeting|
|Period||4/11/18 → 7/11/18|