Coupling Nitrogen Transport and Transformation Model with Land Surface Scheme SABAE-HW and its Application on the Canadian Prairies

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dc.contributor.supervisor Woodbury, Allan (Civil Engineering) en_US
dc.contributor.author Hejazi, Seyed Alireza
dc.date.accessioned 2012-08-20T17:26:20Z
dc.date.available 2012-08-20T17:26:20Z
dc.date.issued 2011-01-10 en_US
dc.identifier.citation Hejazi, A., and Woodbury, A. D. "Evaluation of Land Surface Scheme SABAE-HW in Simulating Snow Depth, Soil Temperature and Soil Moisture within the BOREAS Site, Saskatchewan." Atmosphere-Ocean 49, no. 4 (2011): 408-420. en_US
dc.identifier.uri http://hdl.handle.net/1993/8442
dc.description.abstract The main goal of this research is to contribute to the understanding of nutrient transport and transformations in soil and its impact on groundwater on a large scale. This thesis specifically integrates the physical, chemical and biochemical nitrogen transport processes with a spatial and temporal Land Surface Scheme (LSS). Since the nitrogen biotransformation kinetics highly depends on soil moisture and soil temperature, a vertical soil nitrogen transport and transformations model was coupled with SABAE-HW. The model provides an improved interface for groundwater modeling to simulate soil moisture and soil temperature for a wide range of soil and vegetation. It is assumed that the main source of organic N is from animal manure. A-single-pool nitrogen transformation is designed to simulate nitrogen dynamics. Thus, the complete mathematical model (SABAE-HWS) is able to investigate the effects of nitrogen biochemical reactions in all seasons. This thesis reports the first field comparison of SABAE-HW using an extensive ten-year data set from BOREAS/BERMS project located in Saskatchewan, Canada. The performance of SABAE-HWS is calibrated and verified using 3 years (2002-2004) data from Carberry site in Canada, Manitoba. The effects of three rates of hog manure application, 2500, 5000, and 7500 gal/acre, was investigated to study the distribution of soil ammonium and soil nitrate within the 120 cm of soil profile. The results clearly showed that there is a good agreement between observed and simulated soil ammonium and nitrate for all treatment at the first two years of study. However, it was found a significant difference between observations and simulations at lower depths for 7500 gal/acre by the end of growing season of 2004. Also, 10 years climate data from OJP site was used to evaluate the effect of manure rates on the distribution of soil nitrate at Carberry site. The results indicated that to minimize the risk of nitrate leaching, the rate of manure application, accumulated soil nitrogen from earlier applications and the atmospheric conditions should be all taken into account at the same time. Comparing the results of SABAE-HWS and SHAW model also showed the importance of the crop growth model in simulating soil NH4-N and NO3-N. en_US
dc.publisher Atmosphere-Ocean en_US
dc.subject Land surface scheme en_US
dc.subject nitrogen transport en_US
dc.title Coupling Nitrogen Transport and Transformation Model with Land Surface Scheme SABAE-HW and its Application on the Canadian Prairies en_US
dc.degree.discipline Civil Engineering en_US
dc.contributor.examiningcommittee Akinremi, Wole (Soil Science) Loukili, Youssef (Civil Engineering) Sykes, Jonathan (Civil Engineering, University of Waterloo) en_US
dc.degree.level Doctor of Philosophy (Ph.D.) en_US
dc.description.note October 2012 en_US

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