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Title: Crop physiology calibration in the CLM

Journal Article · · Geoscientific Model Development (Online)
 [1];  [2];  [1]
  1. Argonne National Lab., IL (United States). Mathematics and Computer Science Div.
  2. Argonne National Lab., IL (United States). Environmental Science Div.

Farming is using more of the land surface, as population increases and agriculture is increasingly applied for non-nutritional purposes such as biofuel production. This agricultural expansion exerts an increasing impact on the terrestrial carbon cycle. In order to understand the impact of such processes, the Community Land Model (CLM) has been augmented with a CLM-Crop extension that simulates the development of three crop types: maize, soybean, and spring wheat. The CLM-Crop model is a complex system that relies on a suite of parametric inputs that govern plant growth under a given atmospheric forcing and available resources. CLM-Crop development used measurements of gross primary productivity (GPP) and net ecosystem exchange (NEE) from AmeriFlux sites to choose parameter values that optimize crop productivity in the model. In this paper, we calibrate these parameters for one crop type, soybean, in order to provide a faithful projection in terms of both plant development and net carbon exchange. Calibration is performed in a Bayesian framework by developing a scalable and adaptive scheme based on sequential Monte Carlo (SMC). The model showed significant improvement of crop productivity with the new calibrated parameters. We demonstrate that the calibrated parameters are applicable across alternative years and different sites.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); USDOE Office of Science - Office of Biological and Environmental Research
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1208895
Alternate ID(s):
OSTI ID: 1392545
Journal Information:
Geoscientific Model Development (Online), Vol. 8, Issue 4; ISSN 1991-9603
Publisher:
European Geosciences UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

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Cited By (4)

Computationally Efficient Variational Approximations for Bayesian Inverse Problems
  • Tsilifis, Panagiotis; Bilionis, Ilias; Katsounaros, Ioannis
  • Journal of Verification, Validation and Uncertainty Quantification, Vol. 1, Issue 3 https://doi.org/10.1115/1.4034102
journal July 2016
Efficient surrogate modeling methods for large-scale Earth system models based on machine-learning techniques journal January 2019
Representing agriculture in Earth System Models: Approaches and priorities for development: AGRICULTURE IN ESMS journal September 2017
Impact assessment of climate change on rice yields using the ORYZA model in the Sichuan Basin, China journal March 2018

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