Journal cover Journal topic
Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
doi:10.5194/gmd-2016-294
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Model description paper
20 Dec 2016
Review status
This discussion paper is under review for the journal Geoscientific Model Development (GMD).
VIC-CropSyst: A regional-scale modeling platform to simulate the nexus of climate, hydrology, cropping systems, and human decisions
Keyvan Malek1, Claudio Stockle1, Kiran Chinnayakanahalli3, Roger Nelson1, Mingliang Liu2, Kirti Rajagopalan2, Muhammad Barik2, and Jennifer Adam2 1Department of Biological Systems Engineering at Washington State University
2Department of Civil and Environmental Engineering at Washington State University
3Air Worldwide Corp.
Abstract. Food supply is affected by a complex nexus of land, atmosphere, and human processes, including short- and long-term stressors (e.g., drought and climate change, respectively). A simulation platform that captures these complex elements can be used to inform policy and best management practices to promote sustainable agriculture. We have developed a tightly-coupled framework using the macroscale Variable Infiltration Capacity (VIC) hydrologic model and the CropSyst agricultural model. A mechanistic irrigation module has been developed for inclusion in this framework. The performance of VIC-CropSyst was evaluated using two flux tower sites located in agricultural fields in the U.S. (Nebraska and Illinois). The agreement between recorded and simulated evapotranspiration (ET), applied irrigation water, soil moisture, leaf area index (LAI), and yield indicated that, although the model is intended to work at regional scales, it also captures field scale processes in agricultural areas. We also evaluated the regional simulations of VIC-CropSyst's ET over the Washington, Idaho and Oregon in the U.S. VIC-CropSyst is being used in conjunction with socio-economic models, river system models and atmospheric models to simulate the feedback processes between regional water availability, agricultural water management decisions and land-atmospheric interactions.

Citation: Malek, K., Stockle, C., Chinnayakanahalli, K., Nelson, R., Liu, M., Rajagopalan, K., Barik, M., and Adam, J.: VIC-CropSyst: A regional-scale modeling platform to simulate the nexus of climate, hydrology, cropping systems, and human decisions, Geosci. Model Dev. Discuss., doi:10.5194/gmd-2016-294, in review, 2016.
Keyvan Malek et al.
Keyvan Malek et al.
Keyvan Malek et al.

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