DOI: 10.1007/s10584-015-1538-4
Scopus记录号: 2-s2.0-84951567755
论文题名: The influence of weather extremes on the spatial correlation of corn yields
作者: Tack J.B. ; Holt M.T.
刊名: Climatic Change
ISSN: 0165-0009
EISSN: 1573-1480
出版年: 2016
卷: 134, 期: 2018-01-02 起始页码: 299
结束页码: 309
语种: 英语
英文关键词: Bell states
; Entanglement
; Measurement bases
; Standard quantum teleportation and controlled quantum teleportation
; Unitary transformations
Scopus关键词: Agriculture
; Crops
; Quantum entanglement
; Quantum theory
; Annual production
; Bell state
; Degree of correlations
; Entanglement
; Quantum teleportation
; Spatial correlations
; Unitary transformations
; Weather variability
; Climate change
; climate change
; conditioning
; correlation
; crop yield
; extreme event
; maize
; spatial analysis
; theoretical study
; Illinois
; Iowa
; United States
; Zea mays
英文摘要: Annual production shocks at the farm-level are driven by year-to-year weather variability. While identifying drivers of these shocks is important and well-researched, little attention has been paid to the extent to which these shocks aggregate up to the regional or national level. Here, we provide a method for simultaneously modeling the mean, variance, and spatial correlation of crop yields in the presence of evolving technology. Our approach allows one to condition spatial correlations on variables of interest—such as weather—in a straightforward manner. An application to state-level Iowa and Illinois corn yields provides evidence that spatial correlations roughly double in both good and bad weather years relative to normal years. Furthermore, we consider several functional forms for conditioning spatial correlations on weather and find that less flexible relationships generate misleading results as they vastly underestimate the degree of correlation in bad weather years. These findings have important implications for the climate change, food price volatility, crop insurance, and yield modeling literatures. © 2015, Springer Science+Business Media Dordrecht. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/84424
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Department of Agricultural Economics, Mississippi State University, Mississippi State, MS, United States; Department of Economics, Finance and Legal Studies, The University of Alabama, Tuscaloosa, AL, United States
Recommended Citation:
Tack J.B.,Holt M.T.. The influence of weather extremes on the spatial correlation of corn yields[J]. Climatic Change,2016-01-01,134(2018-01-02)