DOI: 10.1002/2015GL065925
论文题名: The importance of Harmattan surges for the emission of North African dust aerosol
作者: Fiedler S. ; Kaplan M.L. ; Knippertz P.
刊名: Geophysical Research Letters
ISSN: 0094-8488
EISSN: 1944-8219
出版年: 2015
卷: 42, 期: 21 起始页码: 9495
结束页码: 9504
语种: 英语
英文关键词: climatology
; dust emission
; ERA-Interim
; Harmattan
; North Africa
; synoptic-scale storms
Scopus关键词: Aerosols
; Climate models
; Climatology
; Storms
; Automated identification
; Dust emission
; Emission maxima
; Era interims
; Harmattan
; Near-surface winds
; North Africa
; Relative impact
; Dust
; aerosol
; automation
; climatology
; dust
; emission inventory
; regional climate
; storm
; synoptic meteorology
; North Africa
英文摘要: Dust aerosol is important in the Earth system, but the relative impact of meteorological mechanisms on North African dust emission remains unclear. This study presents the first climatology of dust emission amounts associated with Harmattan surges (HSs), characterized by postfrontal strengthening of near-surface winds. A new automated identification uses their strong isallobaric winds as an indicator for HSs in 32 years of ERA-Interim reanalysis. Their impact on dust aerosol emission is estimated by combining the identified events with derived dust emissions. The estimate highlights that about one third of the total emission mass is associated with HSs. Spring shows the largest associated emissions of 30-50% of the monthly totals consistent with the largest number and duration of HSs. Regional emission contributions of up to 80% in the north coincide with the overall largest emission maxima in spring. The importance of HSs for dust emission implies that aerosol-climate models need to accurately represent synoptic-scale storms. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955170978&doi=10.1002%2f2015GL065925&partnerID=40&md5=abc8349d24774d1cd393ab5337736039
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8104
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: Max Planck Institute for Meteorology, Hamburg, Germany
Recommended Citation:
Fiedler S.,Kaplan M.L.,Knippertz P.. The importance of Harmattan surges for the emission of North African dust aerosol[J]. Geophysical Research Letters,2015-01-01,42(21).