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ARS Home » Northeast Area » Beltsville, Maryland (BARC) » Beltsville Agricultural Research Center » Adaptive Cropping Systems Laboratory » Research » Publications at this Location » Publication #364352
Research Project: Experimentally Assessing and Modeling the Impact of Climate and Management on the Resiliency of Crop-Weed-Soil Agro-Ecosystems

Location: Adaptive Cropping Systems Laboratory

Title: Multi location response and calibration stability of potato models to changes in atmospheric carbon dioxide concentration

Author
item Fleisher, David
item CONDORI, BRUNO - Universidad Cientifica Del Sur Peru
item BARREDA, CAROLINA - International Potato Center
item BERGUIJS, HERMAN - University Of Wageningen
item BINDI, MARCO - University Of Florence
item BOOTE, KEN - University Of Florida
item CRAIGON, JIM - University Of Nottingham
item VAN EVERT, FRITZ - University Of Wageningen
item FANGMEIER, ANDREAS - University Of Hohenheim
item FERRISE, ROBERTO - University Of Florence
item GAYLER, SEBASTIAN - University Of Hohenheim
item HOOGENBOOM, GERRIT - University Of Florida
item KREMER, PASCAL - University Of Hohenheim
item MERANTE, PAOLO - University Of Florence
item NENDEL, CLAAS - Leibniz Institute
item NINANYA, JOHAN - International Potato Center
item RAES, DIRK - Leuven University
item RAMIREZ, DAVID - International Potato Center
item STOCKLE, CLAUDIO - Washington University
item SUPIT, IWAN - University Of Wageningen
item STELLA, TOMMASO - Leibniz Institute
item VANDERMEIREN, KARINE - Veterinary And Agrochemical Research Center, Coda-Cerva
item VANUYTRECHT, ELINE - Leuven University
item VORNE, VIRPI - Natural Resources Institute Finland (LUKE)
item VANOORT, PEPIJN - University Of Wageningen
item WOLF, JOOST - University Of Wageningen

Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 8/23/2019
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: This study reports on research results from the potato crop modeling pilot of the Agricultural Model Intercomparison and Improvement Project (AgMIP) to assess the response of an ensemble of potato models to changes in atmospheric carbon dioxide concentration (C). Experimental data from eight open-top and free-air CO2 enrichment systems throughout Europe drive the study. The sensitivity of model calibration to location was also evaluated as similar management conditions and an identical cultivar (Bintje) were used. Two phases were conducted. First, modelers were provided with data from just two of the eight locations at ambient C levels for calibration. 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. In the second phase, modelers developed site-specific calibration parameters for each individual location, as well as one single cross-location calibration set. Simulations were then conducted for elevated C responses at each location using both calibration results. The capability of the ensemble of crop models to accurately replicate potato yields under elevated C will be evaluated under both research phases. The influence that data availability and calibration methodology have on these results will also be assessed. This presentation will thus be reporting on model accuracy as well as the geospatial stability of model calibration. 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.