Skip to main content

Advertisement

Log in

Features and sources of aerosol properties over the western Pacific Ocean based on shipborne measurements

  • Original Paper
  • Published:
Meteorology and Atmospheric Physics Aims and scope Submit manuscript

Abstract

In the Western Pacific, the limited in situ observations of aerosol optical depth (AOD) show substantial north–south differences in its spectral distribution, magnitude, seasonal fluctuation, and Angstrom exponent. Two sets of observation data collected in spring 2017 and summer 2019 are used to investigate aerosol size distribution and its sources through the GRASP (Generalized Retrieval of Aerosol and Surface Properties) inversion method and HYSPLIT (HYbrid Single-Particle Lagrange Integrated Trajectory) particle trajectories model. The retrieved aerosol size distribution (normalized by aerosol volume concentration) is homogeneous over the western Pacific Ocean. The aerosol volume concentration (Cv,c) in the coarse mode is substantially higher than that in the fine mode (Cv,f) in this region, indicating that coarse particles predominate. The northernmost section has the highest Cv,f with an average value of 0.04, which is 4.5 times that of the other sections except the sites observed in 2019, because of the Long-Range Transport (LRT) of dust from the Gobi and Mongolian Plateau. The equatorial section has the highest Cv,c with an average value of 0.22 for the coarse mode, which is 1.5 ~ 3 times higher than that of the other section. Its single scattering albedo (SSA) is the smallest in all sections (SSA(440) = 0.95). Analysis displays that the section is affected by elevated-smoke and polluted-continental/smoke types due to the biomass burning around Papua New Guinea. In addition, an AOD(500) with a value of 0.048, which is lower than the traditional oceanic AOD baseline, is obtained in summer 2019. In comparison to it, the projected net shortwave and longwave radiative effect of spring observed LRT high concentration PM10 plume (AOD(550) = 0.09) from Southeast Asia at the sea surface are − 3.1 W m−2 and − 1.4 W m−2 under clear sky conditions, resulting in a net radiative effect of − 1.7 W m−2. As the cold surge frequency increases due to the warming Arctic, more LRT events may be expected as a result of climate change.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7

Similar content being viewed by others

Data Availability

the wind dataset at 10 m above sea level is available on the website: https://data.marine.copernicus.eu/product/WIND_GLO_PHY_L4_MY_012_006/description. The AOD data used in this paper can be shared if acquired by anyone.

References

Download references

Acknowledgements

Thanks for funding from Global Change and Air-Sea Interaction II (GASI-01-NPAC-STsum) and Global change and Air-Sea Interaction I (GASI-02-PAC-STMSspr).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Weibo Wang.

Ethics declarations

Conflict of interests

Authors are required to disclose financial or non-financial interests that are directly or indirectly related to the work submitted for publication.

Additional information

Responsible Editor: Clemens Simmer, Ph.D.

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Wang, W., Jing, C., Zhu, D. et al. Features and sources of aerosol properties over the western Pacific Ocean based on shipborne measurements. Meteorol Atmos Phys 135, 24 (2023). https://doi.org/10.1007/s00703-023-00960-7

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s00703-023-00960-7

Navigation