Xin Xie1, Xianming Zhang2, Yanyu Wang1, Rui Lyu1, Guangqiang Zhou 3,4, Tiantao Cheng 1,5, Yuehui Liu1, Yarong Peng1, Qianshan He3,4, Wei Gao3,4, Xiang Li1, Qian Zhang2


Department of Environmental Science and Engineering, Institute of Atmospheric Sciences, Fudan University, Shanghai 200433, China
Wireless Product R&D Institute, ZTE Corporation, Shenzhen 518057, China
Shanghai Meteorological Service, Shanghai 20030, China
Shanghai Key Laboratory of Meteorology and Health, Shanghai 20030, China
Department of Atmospheric and Oceanic Sciences, Institute of Atmospheric Sciences, Fudan University, Shanghai 200438, China



Received: December 3, 2018
Revised: March 11, 2019
Accepted: June 17, 2019
Download Citation: ||https://doi.org/10.4209/aaqr.2018.11.0415 

  • Download: PDF


Cite this article:
Xie, X., Zhang, X., Wang, Y., Lyu, R., Zhou, G., Cheng, T., Liu, Y., Peng, Y., He, Q., Gao, W., Li, X. and Zhang, Q. (2019). Effects of Shipping-originated Aerosols on Physical Cloud Properties over Marine Areas near East China. Aerosol Air Qual. Res. 19: 1471-1482. https://doi.org/10.4209/aaqr.2018.11.0415


HIGHLIGHTS

  • AODship is on average approximately 0.17, 0.20, 0.15 and 0.13 in four seasons.
  • Over remote sea areas, AODship is higher in spring and summer and lower in autumn.
  • Negative relationships between AODship and cloud parameters (except CER) were found.
  • AODship and cloud properties are better related for well-mixed aerosol-cloud layer.
  • Water vapor and air upward motion facilitate the updraft of shipping aerosols.

ABSTRACT


Shipping emissions have received increasing attention due to their influence on regional climate, and air quality at ports and in coastal areas around the world. In the context of climatology, the effects of shipping-originated aerosols (using the aerosol optical depth, AODship, as a proxy) on clouds in marine areas near East China were examined based on multi-satellite datasets. On average, AODship is approximately 0.17, 0.20, 0.15 and 0.13 in the different seasons, contributing 23%, 30%, 36% and 25% of the total AOD, respectively. In remote sea areas, AODship is generally higher in spring and summer and lower in autumn. Statistical analysis shows that it is strongly related to the cloud parameters, such as the cloud fraction (CF), cloud optical thickness (COT) and cloud effective radius (CER) in the liquid phase. In particular, CER and AODship exhibit a positive correlation in winter but a weakly negative correlation in summer over the northern East China Sea and a positive correlation in spring and summer over the Yellow Sea. In all four seasons, COT and CF decrease as AODship increases. The correlations between AODship and the cloud properties are stronger (R > 0.3) when the aerosol-cloud layers are well mixed than when they are separated, indicating that shipping-originated aerosols drawn into the cloud body can directly affect the microphysical properties of cloud droplets during cloud formation. The water vapor content and upward air motion are key thermodynamic conditions within the low atmospheric layers under the cloud bottom that play an important role in cloud formation and development. Our results provide new insight into the influence of shipping emissions on clouds in Asian marine areas.


Keywords: Shipping emissions; Aerosol; Cloud property; East China

 



Don't forget to share this article 

 

Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

Latest coronavirus research from Aerosol and Air Quality Research

2018 Impact Factor: 2.735

5-Year Impact Factor: 2.827


SCImago Journal & Country Rank

Sign up to AAQR Newsletter

Sign up to receive latest research, letters to the editors, and review articles, delivered to your inbox every second week!