Preliminary results of the coupled CWRF-GOSSYM system

Min Xu; Xin-Zhong Liang; Wei Gao; K. Raja Reddy; James Slusser; Kenneth Kunkel

doi:10.1117/12.621017

1 September 2005 Preliminary results of the coupled CWRF-GOSSYM system

Min Xu, Xin-Zhong Liang, Wei Gao, K. Raja Reddy, James Slusser, Kenneth Kunkel

Proceedings Volume 5884, Remote Sensing and Modeling of Ecosystems for Sustainability II; 588409 (2005) https://doi.org/10.1117/12.621017
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

GOSSYM is a comprehensive crop growth model that has been continuously developed since the late 1970s and widely applied to assist cotton growers, crop consultants, and researchers. The state-of-art CWRF (Climate-Weather Research and Forecasting model) demonstrated skillful simulations of regional water and energy cycle processes that are keenly important to cotton growth. This study focuses on coupling GOSSYM and CWRF to study crop-climate interactions. The coupling procedures include (1) recoding the GOSSYM to follow the CWRF F90 modular implementation; (2) replacing the soil dynamic module of the GOSSYM with the CWRF-predicted soil temperature and moisture while integrating the crop field management or cultural practice component (e.g., irrigation, tillage); (3) providing the GOSSYM with surface air temperature, precipitation, and surface solar radiation from the CWRF; (4) constructing crop height and coverage, leaf and stem area indices, greenness and root profile from the GOSSYM as inputs for the CWRF to represent the crop feedback on solar albedo and infrared emissivity, precipitation interception, and evapotranspiration. This study presents the preliminary results of the GOSSYM driven by the CWRF simulated climate conditions and discusses the model performance on cotton yield, leaf area index and height and their responses to water stress under the irrigation and non-irrigation conditions.

Citation Download Citation

Min Xu, Xin-Zhong Liang, Wei Gao, K. Raja Reddy, James Slusser, and Kenneth Kunkel "Preliminary results of the coupled CWRF-GOSSYM system", Proc. SPIE 5884, Remote Sensing and Modeling of Ecosystems for Sustainability II, 588409 (1 September 2005); https://doi.org/10.1117/12.621017

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