CCPortal
Collaborative Research: Marginal instability and deep cycle turbulence in the equatorial oceans
项目编号1355856
Sutanu Sarkar
项目主持机构University of California-San Diego
开始日期2014-03-01
结束日期2018-02-28
英文摘要'The formation of aerosol nanoparticles by vapour nucleation and condensational growth is currently considered the dominant source of cloud condensation nuclei on global scale, hence impacting radiative properties of the atmosphere and precipitation patterns of clouds. Despite considerable experimental and theoretical efforts, the mechanisms of the gas-to-particle conversion are still poorly understood, and so are the parameterizations of this process in climate models. Improving the situation critically depends on the continuous development of experimental techniques. For the quantitative characterization of nanoparticle dynamics especially time resolution deserves more attention. I am thus proposing to design instruments that will improve time resolution by up to five orders of magnitude. Specifically, I am planning the design of a fast-scanning electrical mobility based nanoparticle spectrometer delivering size distributions from 1 nm upwards at 1 Hz, for number concentrations as low as 100 cm-3. Secondly, in a new approach to the study of secondary organic aerosol formation I am planning to apply small angle x-ray scattering providing direct information on particle size and number at sub-millisecond time-resolution. Thirdly, the study of fundamental growth kinetics by Mie scattering at short wavelengths will constitute an important part of my research. And finally, an application oriented research task will deal with the design and construction of a nucleation based trace-gas removal system capable of generating liquid water from plain ambient air. The research on phase transition processes constitutes a vital link between molecular scale interactions and macroscopically relevant outcome. The current proposal aims at identifying and quantifying nanoparticle formation mechanisms by new experimental approaches. Thereby it will be possible to reliably predict and utilize macroscopic effects caused by aerosol mechanisms on the nano-scale.'
学科分类08 - 地球科学;0806 - 海洋科学
资助机构US-NSF
项目经费304421
项目类型Standard Grant
国家US
语种英语
文献类型项目
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/74737
推荐引用方式
GB/T 7714
Sutanu Sarkar.Collaborative Research: Marginal instability and deep cycle turbulence in the equatorial oceans.2014.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Sutanu Sarkar]的文章
百度学术
百度学术中相似的文章
[Sutanu Sarkar]的文章
必应学术
必应学术中相似的文章
[Sutanu Sarkar]的文章
相关权益政策
暂无数据
收藏/分享

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。