DISSIPATION OF MARINE STRATIFORM CLOUDS AND COLLAPSE OF THE MARINE BOUNDARY-LAYER DUE TO THE DEPLETION OF CLOUD CONDENSATION NUCLEI BY CLOUDS

被引：98

作者：

ACKERMAN, AS ^{[1
]}

TOON, OB ^{[1
]}

HOBBS, PV ^{[1
]}

机构：

[1] NASA,AMES RES CTR,MOFFETT FIELD,CA 94035

来源：

SCIENCE | 1993年 / 262卷 / 5131期

关键词：

D O I：

10.1126/science.262.5131.226

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：

When the production of cloud condensation nuclei in the stratocumulus-topped marine boundary layer is low enough, droplet collisions can reduce concentrations of cloud droplet numbers to extremely low values. At low droplet concentrations a cloud layer can become so optically thin that cloud-top radiative cooling cannot drive vertical mixing. Under these conditions, model simulations indicate that the stratocumulus-topped marine boundary layer collapses to a shallow fog layer. Through this mechanism, marine stratiform clouds may limit their own lifetimes.

引用

页码：226 / 229

页数：4

共 37 条

[1] AEROSOLS, CLOUD MICROPHYSICS, AND FRACTIONAL CLOUDINESS [J].