DOI: 10.1002/2016GL068519
论文题名: Earlier onset of the spring fine dust season in the southwestern United States
作者: Hand J.L. ; White W.H. ; Gebhart K.A. ; Hyslop N.P. ; Gill T.E. ; Schichtel B.A.
刊名: Geophysical Research Letters
ISSN: 0094-9069
EISSN: 1944-8800
出版年: 2016
卷: 43, 期: 8 起始页码: 4001
结束页码: 4009
语种: 英语
英文关键词: Aerosols and particles
Scopus关键词: Dust
; Aerodynamic diameters
; Aerosols and particles
; Climate variability
; Dust concentrations
; Hydrologic cycles
; Mineral particles
; Pacific decadal oscillation
; Particulate Matter
; Particles (particulate matter)
英文摘要: Particulate matter (PM)2.5 dust concentrations (mineral particles with aerodynamic diameters less than 2.5 μm) typically peak in spring and early summer at rural and remote sites across the southwestern United States. Trend analyses indicate that springtime regional mean PM2.5 dust concentrations have increased from 1995 to 2014, especially in March (5.4% yr-1, p < 0.01). This increase reflects an earlier onset of the spring dust season across the Southwest by 1 to 2 weeks over the 20 year time period. March dust concentrations were strongly correlated with the Pacific Decadal Oscillation index (r = -0.65, p < 0.01), which was mostly in its negative phase from 2007 to 2014, during which the region was drier, windier, and less vegetated. The positive spring trend and its association with large-scale climate variability have several important implications for visibility, particulate matter, health effects, and the hydrologic cycle in the region. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84964350708&doi=10.1002%2f2016GL068519&partnerID=40&md5=9166292bd56dd07b34fce807689eafe0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10032
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Cooperative Institute for Research in the Atmosphere, Colorado State University, Fort Collins, CO, United States
Recommended Citation:
Hand J.L.,White W.H.,Gebhart K.A.,et al. Earlier onset of the spring fine dust season in the southwestern United States[J]. Geophysical Research Letters,2016-01-01,43(8).