Lihao Zhang1,2, Weifeng Yang 1,2, Min Chen1,2, Zhou Wang2, Peng Lin3, Ziming Fang2, Yusheng Qiu1,2, Minfang Zheng2

  • 1 State Key Laboratory of Marine Environmental Science, Xiamen 361005, China
  • 2 College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
  • 3 School of Freshwater Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI 53204, USA

Received: March 23, 2015
Revised: June 21, 2015
Accepted: September 28, 2015
Download Citation: ||https://doi.org/10.4209/aaqr.2015.03.0182  

  • Download: PDF


Cite this article:
Zhang, L., Yang, W., Chen, M., Wang, Z., Lin, P., Fang, Z., Qiu, Y. and Zheng, M. (2016). Atmospheric Deposition of 7Be in the Southeast of China: A Case Study in Xiamen. Aerosol Air Qual. Res. 16: 105-113. https://doi.org/10.4209/aaqr.2015.03.0182


HIGHLIGHTS

  • Inter- to intra-annual deposition of 7Be was examined.
  • Monsoon control over seasonal 7Be deposition in southeastern China.
  • Dominant removal of 7Be via precipitation.
  • 7Be could be used to clarify pollutants diffusion in southeastern China.

 

ABSTRACT


Atmospheric deposition of 7Be was measured at a time-series station in the southeast of China (Xiamen) from 2011 to 2013. The deposition fluxes of 7Be ranged from 0.05 Bq m–2 d–1 to 7.42 Bq m–2 d–1, averaging 1.87 ± 0.10 Bq m–2 d–1. High fluxes occurred in months with northeast monsoon, and low values were observed in the southwest monsoon prevailing months. The significant correlations between 7Be deposition and precipitation, existing in both northeast and southwest monsoon seasons, suggested the dominant removal of atmospheric 7Be via precipitation. However, the correlations showed a large slope for the northeast monsoon season, indicating higher 7Be contents in the atmosphere during the northeast monsoon prevailing months, supported by the precipitation-normalized 7Be and the temporal variability of 7Be/210Pb ratios. Such a scenario revealed more intensive exchange of air mass between the stratosphere and troposphere during the northeast monsoon prevailing months. Together with the high pollutant concentrations in ambient air observed in these seasons, the results indicated that the pollutants in Xiamen might enter into the upper troposphere via vertical air mass exchange.


Keywords: 7Be; Residence time; Monsoon; Aerosol; Haze


Share this article with your colleagues 

 

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.

7.3
2022CiteScore
 
 
77st percentile
Powered by
Scopus
 
   SCImago Journal & Country Rank

2022 Impact Factor: 4.0
5-Year Impact Factor: 3.4

Aerosol and Air Quality Research partners with Publons

CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit
CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit

Aerosol and Air Quality Research (AAQR) is an independently-run non-profit journal that promotes submissions of high-quality research and strives to be one of the leading aerosol and air quality open-access journals in the world. We use cookies on this website to personalize content to improve your user experience and analyze our traffic. By using this site you agree to its use of cookies.