DOI: 10.1029/2012GL053953
论文题名: The impact of rain on ice nuclei populations at a forested site in Colorado
作者: Prenni A.J. ; Tobo Y. ; Garcia E. ; DeMott P.J. ; Huffman J.A. ; McCluskey C.S. ; Kreidenweis S.M. ; Prenni J.E. ; Pöhlker C. ; Pöschl U.
刊名: Geophysical Research Letters
ISSN: 0094-9414
EISSN: 1944-9145
出版年: 2013
卷: 40, 期: 1 起始页码: 227
结束页码: 231
语种: 英语
Scopus关键词: Biological process
; Competing mechanisms
; DNA Sequencing
; Forested sites
; Hydrologic cycles
; Number concentration
; Size dependent
; Wet deposition
; Atmospheric aerosols
; DNA sequences
; Forestry
; Lasers
; Rain
; Storms
; Suspensions (fluids)
; aerosol composition
; atmospheric deposition
; climate effect
; cloud microphysics
; forest floor
; ice
; particle size
; precipitation (climatology)
; rainfall
; storm
; Colorado
; United States
英文摘要: It has long been known that precipitation can impact atmospheric aerosol, altering number concentrations and size-dependent composition. Such effects result from competing mechanisms: precipitation can remove particles through wet deposition, or precipitation can lead to the emission of particles through mechanical ejection, biological processes, or re-suspension from associated wind gusts. These particles can feed back into the hydrologic cycle by serving as cloud nuclei. In this study, we investigated how precipitation at a forested site impacted the concentration and composition of ice nuclei (IN). We show that ground level IN concentrations were enhanced during rain events, with concentrations increasing by up to a factor of 40 during rain. We also show that a fraction of these IN were biological, with some of the IN identified using DNA sequencing. As these particles get entrained into the outflow of the storm, they may ultimately reach cloud levels, impacting precipitation of subsequent storms. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874851820&doi=10.1029%2f2012GL053953&partnerID=40&md5=e344e32607679566ae3c01379ea815a0
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6678
Appears in Collections: 气候减缓与适应
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作者单位: Department of Atmospheric Science, Colorado State University, Campus Delivery 1371, Fort Collins, CO 80523, United States
Recommended Citation:
Prenni A.J.,Tobo Y.,Garcia E.,et al. The impact of rain on ice nuclei populations at a forested site in Colorado[J]. Geophysical Research Letters,2013-01-01,40(1).