Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.414 IF 5.414
  • IF 5-year value: 5.958 IF 5-year
    5.958
  • CiteScore value: 9.7 CiteScore
    9.7
  • SNIP value: 1.517 SNIP 1.517
  • IPP value: 5.61 IPP 5.61
  • SJR value: 2.601 SJR 2.601
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 191 Scimago H
    index 191
  • h5-index value: 89 h5-index 89
Preprints
https://doi.org/10.5194/acp-2019-1194
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-2019-1194
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  28 Feb 2020

28 Feb 2020

Review status
A revised version of this preprint was accepted for the journal ACP and is expected to appear here in due course.

Aerosol concentrations variability over China: two distinct leading modes

Juan Feng1, Jianlei Zhu2, Jianping Li3, and Hong Liao4 Juan Feng et al.
  • 1College of Global Change and Earth System Science, Beijing Normal University, Beijing, China
  • 2Foreign Economic Cooperation Office, Ministry of Ecology and Environment, Beijing, China
  • 3Key Laboratory of Physical Oceanography – Institute for Advanced Ocean Studies, Ocean University of China and Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China
  • 4School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, China

Abstract. Understanding the variability in aerosol concentrations (AC) over China is a scientific challenge and is of practical importance. The present study explored the month-to-month variability in AC over China based on simulations of an atmospheric chemical transport model with a fixed emissions level. The month-to-month variability in AC over China is dominated by two principal modes: the first leading mono-pole mode and the second meridional dipole mode. The mono-pole mode mainly indicates enhanced AC over eastern China, and the dipole mode displays a south–north out-of-phase pattern. The two leading modes are associated with different climatic systems. The mono-pole mode relates to the 3-month leading El Niño–South Oscillation (ENSO), while the dipole mode connects with the simultaneous variation in the North Atlantic Oscillation (NAO) or the Northern Hemisphere Annular Mode (NAM). The associated anomalous dynamic and thermal impacts of the two climatic variabilities are examined to explain their contributions to the formation of the two modes. For the mono-pole mode, the preceding ENSO is associated with anomalous convergence, decreased planetary boundary layer height (PBLH), and negative temperature anomalies, which are unfavorable for emissions. For the dipole mode, the positive NAO is accompanied by opposite anomalies in the convergence, PBLH, and temperature over southern and northern China, paralleling the spatial formation of the mode. This result suggests that the variations originating from the tropical Pacific and extratropical atmospheric systems contribute to the dominant variabilities of AC over China.

Juan Feng et al.

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Juan Feng et al.

Data sets

Simulated coordinated impacts of the previous autumn NAO and winter El Niño on the winter aerosol concentrations over eastern China J. Feng, J. Li, H. Liao, and J. Zhu https://doi.org/10.5281/zenodo.3247326

Model code and software

Simulated coordinated impacts of the previous autumn NAO and winter El Niño on the winter aerosol concentrations over eastern China J. Feng, J. Li, H. Liao, and J. Zhu https://doi.org/10.5281/zenodo.3247326

Juan Feng et al.

Viewed

Total article views: 386 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
288 90 8 386 10 15
  • HTML: 288
  • PDF: 90
  • XML: 8
  • Total: 386
  • BibTeX: 10
  • EndNote: 15
Views and downloads (calculated since 28 Feb 2020)
Cumulative views and downloads (calculated since 28 Feb 2020)

Viewed (geographical distribution)

Total article views: 245 (including HTML, PDF, and XML) Thereof 244 with geography defined and 1 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 11 Aug 2020
Publications Copernicus
Download
Short summary
This paper explores the month-to-month variability of the aerosol concentrations (AC) over China. The AC variability is dominated by the mono-pole mode and the meridional dipole mode. The associated dynamic and thermal impacts of the climate systems are examined to explain their contributions to the formation of the two modes. The result suggests the variations originating from tropical Pacific and extratropical atmospheric systems contribute to the dominant variabilities of AC over China.
This paper explores the month-to-month variability of the aerosol concentrations (AC) over...
Citation