A Caltech Library Service

Aerosol-Cloud-Precipitation Interactions in a Closed-cell and Non-homogenous MBL Stratocumulus Cloud

Zheng, Xiaojian and Dong, Xiquan and Ward, Dale M. and Xi, Baike and Wu, Peng and Wang, Yuan (2022) Aerosol-Cloud-Precipitation Interactions in a Closed-cell and Non-homogenous MBL Stratocumulus Cloud. Advances in Atmospheric Sciences, 39 . pp. 2107-2123. ISSN 0256-1530. doi:10.1007/s00376-022-2013-6.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


A closed-cell marine stratocumulus case during the Aerosol and Cloud Experiments in the Eastern North Atlantic (ACE-ENA) aircraft field campaign is selected to examine the heterogeneities of cloud and drizzle microphysical properties and the aerosol-cloud-precipitation interactions. The spatial and vertical variabilities of cloud and drizzle microphysics are found in two different sets of flight legs: Leg-1 and Leg-2, which are parallel and perpendicular to the cloud propagation, respectively. The cloud along Leg-2 was close to adiabatic, where cloud-droplet effective radius and liquid water content linearly increase from cloud base to cloud top with less drizzle. The cloud along Leg-1 was sub-adiabatic with lower cloud-droplet number concentration and larger cloud-droplet effective, but higher drizzle droplet number concentration, larger drizzle droplet median diameter and drizzle liquid water content. The heavier drizzle frequency and intensity on Leg-1 were enhanced by the collision-coalescence processes within cloud due to strong turbulence. The sub-cloud precipitation rate on Leg-1 was significantly higher than that along Leg-2. As a result, the sub-cloud accumulation mode aerosols and CCN on Leg-1 were depleted, but the coarse model aerosols increased. This further leads to a counter-intuitive phenomenon that the CCN is less than cloud-droplet number concentration for Leg-1. The average CCN loss rates are −3.89 cm⁻³ h⁻¹ and −0.77 cm⁻³ h⁻¹ on Leg-1 and Leg-2, respectively. The cloud and drizzle heterogeneities inside the same stratocumulus can significantly alter the sub-cloud aerosols and CCN budget. Hence it should be treated with caution in the aircraft assessment of aerosol-cloud-precipitation interactions.

Item Type:Article
Related URLs:
URLURL TypeDescription
Zheng, Xiaojian0000-0001-5913-719X
Dong, Xiquan0000-0002-3359-6117
Xi, Baike0000-0001-6126-2010
Wu, Peng0000-0001-7066-5487
Wang, Yuan0000-0001-6657-8401
Additional Information:The aircraft in situ measurements during ACE-ENA IOP were obtained from the Atmospheric Radiation Measurement (ARM) Program sponsored by the U.S. Department of Energy (DOE) Office of Energy Research, Office of Health and Environmental Research, and Environmental Sciences Division. The data can be downloaded from This work was supported by the NSF grants AGS-2031750 and AGS-2031751, and was also supported as part of the “Enabling Aerosol-cloud interactions at GLobal convection-permitting scalES (EAGLES)” project (74358), funded by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research, Earth System Modeling program with the subcontract to the University of Arizona. The Pacific Northwest National Laboratory is operated for the Department of Energy by Battelle Memorial Institute under Contract DE-AC05-76 RL01830. Special thanks to Dr. Timothy LOGAN at the Texas A&M University for a thorough grammar check on the manuscript. And a special thanks to the editor and three anonymous reviewers for the constructive comments and suggestions, which helped improve the manuscript.
Funding AgencyGrant Number
Enabling Aerosol-cloud interactions at GLobal convection-permitting scalES (EAGLES)74358
Department of Energy (DOE)DE-AC05-76 RL01830
Record Number:CaltechAUTHORS:20220928-285212100.9
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:117165
Deposited By: Melissa Ray
Deposited On:04 Oct 2022 14:13
Last Modified:01 Nov 2022 22:48

Repository Staff Only: item control page