Connotation analysis of parameters in the generalized nonlinear advection aridity model
Zhou, Haixiang; Li, Zhi; Liu, Wenzhao
2021
Source PublicationAgricultural and Forest Meteorology
Volume301-302Issue:未知Pages:未知
Abstract

The generalized nonlinear advection aridity model (GNAA) for evaporation (E) estimation can be expressed in a basic form with a single parameter αe-0, or an extended form using two parameters, αe-c and c. The implications of these model parameters in the model and the accurate estimation of E are receiving increasing attention. Our study shows that αe-0 and αe-c are affected by precipitation (P), the aridity index (Epa/P) and the climate seasonality and asynchrony index (SAI), etc, with which αe-0 has stronger correlations. This demonstrated that annual αe-0 and αe-c could cover the α parameter in the Priestley–Taylor formula, as well as other factors, particularly the aridity index. For the basic GNAA form, annual αe-0 is smaller than 1.00 in most catchments, but the GNAA model with the developed empirical formula between αe-0 and Epa/P can accurately estimate E at an annual scale. For the extended GNAA form, most annual αe-c were larger than 1.00, with a mean value of 1.08 for the Loess Plateau; αe-c tended to restore the original α values in the Priestley-Taylor equation. Functional differences exist between the basic and extended GNAA forms in estimating E and explaining the complementary relationship. Our results bridge some gaps in understanding the GNAA model from previous studies, and provide useful information to extend the application of the GNAA model.   
 

KeywordEvaporation Priestley-Taylor parameter Loess plateau Generalized complementary evaporation relationship GNAA
MOST Discipline Catalogue生态学
DOI10.1016/j.agrformet.2021.108343
Indexed BySCI
Publication PlaceElsevier
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/9857
Collection水保所2018--2021届毕业生论文(学位论文、期刊论文)
Corresponding AuthorLiu, Wenzhao
Affiliation1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, 712100, China
2.College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
Recommended Citation
GB/T 7714
Zhou, Haixiang,Li, Zhi,Liu, Wenzhao. Connotation analysis of parameters in the generalized nonlinear advection aridity model[J]. Agricultural and Forest Meteorology,2021,301-302(未知):未知.
APA Zhou, Haixiang,Li, Zhi,&Liu, Wenzhao.(2021).Connotation analysis of parameters in the generalized nonlinear advection aridity model.Agricultural and Forest Meteorology,301-302(未知),未知.
MLA Zhou, Haixiang,et al."Connotation analysis of parameters in the generalized nonlinear advection aridity model".Agricultural and Forest Meteorology 301-302.未知(2021):未知.
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