Examples
Exhibit 1
Modifying the Soil and Water Assessment Tool to Simulate Cropland Carbon Flux: Model Development and Initial Evaluation
Expanding the SWAT model with the new capability of simulating land-atmosphere carbon exchange.
Model evaluation across spatially distributed sites using daily Eddy Covariance observations.
Comprehensive discussion of model performance as influenced by different factors.
Exhibit 2
Replicating Measured Site-scale Soil Organic Carbon Dynamics in the U.S. Corn Belt Using the SWAT-C Model
We modified the environmental control algorithms within the SWAT-C model to better simulate soil organic carbon dynamics.
We compiled soil organic carbon data form multiple sources and across multiple sites in the U.S. Corn Belt.
Model simulations are sensitive to the choice of environmental control algorithms.
SWAT-C captured well the SOC dynamics at different sites and soil depths and under different tillage intensities.
We discussed limitations and future directions to further improve the model performance.
Exhibit 3
Integrating terrestrial and aquatic processes toward watershed scale modeling of dissolved organic carbon fluxes
We describe a watershed scale DOC model integrating terrestrial and aquatic processes.
SWAT-DOC reproduces well long-term streamflow and DOC fluxes at different time scales.
Modeling analyses indicate DOC fluxes simulations are limited by transportation during high flow events.
SWAT-DOC holds promise to support assessment of DOC related disinfection byproducts risks.
Exhibit 4
Modeling Riverine Dissolved and Particulate Organic Carbon Fluxes from Two Small Watersheds in the Northeastern United States
We added new processes into the SWAT model for riverine POC and DOC modeling.
The SWAT-C model performed well for simulating daily POC and DOC fluxes in two watersheds.
Uncertainty and sensitivity analyses were performed to understand key parameters controlling riverine carbon fluxes.
We anticipate the new capabilities of SWAT-C help inform watershed scale carbon management.
