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http://dx.doi.org/10.5532/KJAFM.2021.23.1.68

Development of an Input File Preparation Tool for Offline Coupling of DNDC and DSSAT Models  

Hyun, Shinwoo (Department of Plant Science, Seoul National University)
Hwang, Woosung (Department of Plant Science, Seoul National University)
You, Heejin (Department of Plant Science, Seoul National University)
Kim, Kwang Soo (Department of Plant Science, Seoul National University)
Publication Information
Korean Journal of Agricultural and Forest Meteorology / v.23, no.1, 2021 , pp. 68-81 More about this Journal
Abstract
The agricultural ecosystem is one of the major sources of greenhouse gas (GHG) emissions. In order to search for climate change adaptation options which mitigate GHG emissions while maintaining crop yield, it is advantageous to integrate multiple models at a high spatial resolution. The objective of this study was to develop a tool to support integrated assessment of climate change impact b y coupling the DSSAT model and the DNDC model. DNDC Regional Input File Tool(DRIFT) was developed to prepare input data for the regional mode of DNDC model using input data and output data of the DSSAT model. In a case study, GHG emissions under the climate change conditions were simulated using the input data prepared b y the DRIFT. The time to prepare the input data was increased b y increasing the number of grid points. Most of the process took a relatively short time, while it took most of the time to convert the daily flood depth data of the DSSAT model to the flood period of the DNDC model. Still, processing a large amount of data would require a long time, which could be reduced by parallelizing some calculation processes. Expanding the DRIFT to other models would help reduce the time required to prepare input data for the models.
Keywords
Greenhouse gas; Crop growth; Gridded simulation; Model coupling; Object-oriented programming;
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