Size matters more than chemistry for cloud-nucleating ability of aerosol particles

被引：740
|
作者：
Dusek, U. [1 ]
Frank, G. P.
Hildebrandt, L.
Curtius, J.
Schneider, J.
Walter, S.
Chand, D.
Drewnick, F.
Hings, S.
Jung, D.
Borrmann, S.
Andreae, M. O.
机构：
[1] Max Planck Inst Chem, Dept Biogeochem, D-55128 Mainz, Germany
[2] Max Planck Inst Chem, Dept Particle Chem, D-55128 Mainz, Germany
[3] Johannes Gutenberg Univ Mainz, Inst Atmospher Phys, D-55128 Mainz, Germany
[4] CALTECH, Pasadena, CA 91125 USA
来源：
SCIENCE | 2006年 / 312卷 / 5778期
关键词：
D O I：
10.1126/science.1125261
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Size-resolved cloud condensation nuclei (CCN) spectra measured for various aerosol types at a non-urban site in Germany showed that CCN concentrations are mainly determined by the aerosol number size distribution. Distinct variations of CCN activation with particle chemical composition were observed but played a secondary role. When the temporal variation of chemical effects on CCN activation is neglected, variation in the size distribution alone explains 84 to 96% of the variation in CCN concentrations. Understanding that particles' ability to act as CCN is largely controlled by aerosol size rather than composition greatly facilitates the treatment of aerosol effects on cloud physics in regional and global models.
引用
收藏
页码：1375 / 1378
页数：4
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