Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1038/NGEO521 |
In situ detection of biological particles in cloud ice-crystals | |
Pratt, Kerri A.2; DeMott, Paul J.1; French, Jeffrey R.3; Wang, Zhien3; Westphal, Douglas L.4; Heymsfield, Andrew J.5; Twohy, Cynthia H.6; Prenni, Anthony J.1; Prather, Kimberly A.2,7 | |
通讯作者 | DeMott, Paul J. |
来源期刊 | NATURE GEOSCIENCE
![]() |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2009 |
卷号 | 2期号:6页码:397-400 |
英文摘要 | The impact of aerosol particles on the formation and properties of clouds is one of the largest remaining sources of uncertainty in climate change projections(1). Certain aerosol particles, known as ice nuclei, initiate ice-crystal formation in clouds, thereby affecting precipitation and the global hydrological cycle(2). Laboratory studies suggest that some mineral dusts and primary biological particles-such as bacteria, pollen and fungi-can act as ice nuclei(3). Here we use aircraft-aerosol time-of-flight spectrometry to directly measure the chemistry of individual cloud ice-crystal residues (obtained after evaporation of the ice), which were sampled at high altitude over Wyoming. We show that biological particles and mineral dust comprised most of the ice-crystal residues: mineral dust accounted for similar to 50% of the residues and biological particles for similar to 33%. Along with concurrent measurements of cloud ice-crystal and ice-nuclei concentrations, these observations suggest that certain biological and dust particles initiated ice formation in the sampled clouds. Finally, we use a global aerosol model to show long-range transport of desert dust, suggesting that biological particles can enhance the impact of desert dust storms on the formation of cloud ice. |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000266543200014 |
WOS关键词 | FLOW DIFFUSION CHAMBER ; ATMOSPHERIC PROCESSES ; MASS-SPECTROMETRY ; MINERAL DUST ; NUCLEI ; MICROBIOLOGY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
来源机构 | Colorado State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/162010 |
作者单位 | 1.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA; 2.Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA; 3.Univ Wyoming, Dept Atmospher Sci, Laramie, WY 82071 USA; 4.USN, Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA; 5.Natl Ctr Atmospher Res, Mesoscale & Microscale Meteorol Div, Boulder, CO 80305 USA; 6.Oregon State Univ, Dept Ocean & Atmospher Sci, Corvallis, OR 97331 USA; 7.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA |
推荐引用方式 GB/T 7714 | Pratt, Kerri A.,DeMott, Paul J.,French, Jeffrey R.,et al. In situ detection of biological particles in cloud ice-crystals[J]. Colorado State University,2009,2(6):397-400. |
APA | Pratt, Kerri A..,DeMott, Paul J..,French, Jeffrey R..,Wang, Zhien.,Westphal, Douglas L..,...&Prather, Kimberly A..(2009).In situ detection of biological particles in cloud ice-crystals.NATURE GEOSCIENCE,2(6),397-400. |
MLA | Pratt, Kerri A.,et al."In situ detection of biological particles in cloud ice-crystals".NATURE GEOSCIENCE 2.6(2009):397-400. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。