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DOI | 10.1016/j.envsoft.2018.03.018 |
Spatiotemporal sensitivity analysis of vertical transport of pesticides in soil | |
Hong, Tao1,3; Purucker, S. Thomas2 | |
发表日期 | 2018-07-01 |
ISSN | 1364-8152 |
卷号 | 105页码:24-38 |
英文摘要 | Environmental fate and transport processes are influenced by many factors. Simulation models that mimic these processes often have complex implementations, which can lead to over-parameterization. Sensitivity analyses are subsequently used to identify critical parameters whose uncertainties can be further reduced or better described and prediction variability minimized. In this study, a variance decomposition based global sensitivity analysis technique (Sobol' method) is conducted based on estimated concentrations in vertical soil compartments using the Pesticide Root Zone Model (PRZM). Daily simulations are performed that explore the input parameter space. Estimated concentrations are compared to data collected over the course of a growing season from an experimental site in Georgia. Our results suggest that model sensitivity is conditional and should be examined at appropriate spatial and temporal resolution to avoid omitting important parameters. This approach can yield a better understanding about the interplay between sensitivity/uncertainty and model dynamics in non-monotonic, non-linear systems. (C) 2018 Published by Elsevier Ltd. |
英文关键词 | Sobol' sensitivity analysis;Global sensitivity analysis;Vertical transport;Fate and transport;Pesticides |
语种 | 英语 |
WOS记录号 | WOS:000434465900003 |
来源期刊 | ENVIRONMENTAL MODELLING & SOFTWARE
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来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/59161 |
作者单位 | 1.Oak Ridge Inst Sci & Educ, Ecosyst Res Div, 960 Coll Stn Rd, Athens, GA USA; 2.US EPA, Ecosyst Res Div, 960 Coll Stn Rd, Athens, GA 30605 USA; 3.ICF Int, 2635 Meridian Pkwy, Durham, NC USA |
推荐引用方式 GB/T 7714 | Hong, Tao,Purucker, S. Thomas. Spatiotemporal sensitivity analysis of vertical transport of pesticides in soil[J]. 美国环保署,2018,105:24-38. |
APA | Hong, Tao,&Purucker, S. Thomas.(2018).Spatiotemporal sensitivity analysis of vertical transport of pesticides in soil.ENVIRONMENTAL MODELLING & SOFTWARE,105,24-38. |
MLA | Hong, Tao,et al."Spatiotemporal sensitivity analysis of vertical transport of pesticides in soil".ENVIRONMENTAL MODELLING & SOFTWARE 105(2018):24-38. |
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