Skip to main content

Advertisement

Log in

Variability of boreal spring Hadley circulation over the Asian monsoon domain and its relationship with tropical SST

  • Published:
Climate Dynamics Aims and scope Submit manuscript

Abstract

The variability of boreal spring Hadley circulation (HC) over the Asian monsoon domain over the last four decades is explored. The climatological distribution of the regional HC is symmetric of the equator, with the ascending branch around the equator and sinking branch around the subtropics in each hemisphere. The first dominant mode (EOF1) of the regional HC is equatorial asymmetric, with the main body in the Southern Hemisphere (SH) and the ascending branch to the north of the equator. This mode is mainly characterized by interannual variation and is related to El Niño-Southern Oscillation (ENSO). Significant negative sea surface temperature (SST) anomalies are observed over the tropical Indian Ocean (TIO) along with the development of La Niña events; however, the magnitude of SST anomalies in the southern Indian Ocean is greater than that in the northern counterpart, contributing to EOF1 formation. The spatial distribution of the second dominant mode (EOF2) is with the main body lying in the Northern Hemisphere (NH) and the ascending branch located to the south of the equator. The temporal variation of this mode is connected to the warming of the TIO. The warming rate of the southern TIO SST is faster than that in the northern counterpart, resulting in the southward migration of the rising branch. The above result indicates the critical role of the meridional distribution of SST on the variability of the regional HC.

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
Fig. 8
Fig. 9
Fig. 10
Fig. 11

Similar content being viewed by others

References

Download references

Acknowledgements

This work was jointly supported by the National Key R&D Program of China (2016YFA0601801), National Natural Science Foundation of China (NSFC) Project (41975079), and the SOA Program on Global Change and Air-Sea interactions (GASI-IPOVAI-03). The HadISST dataset was obtained from the UK Met Office Hadley Centre and is available online at http://www.metoffice.gov.uk/hadobs/hadisst/data/download.html. The NCEP1 and ERSST reanalyses were obtained from NOAA and are available at http://www.esrl.noaa.gov/psd/data/gridded/. The JRA reanalysis is available online at http://jra.kishou.go.jp/JRA-55/index_en.html.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Juan Feng.

Additional information

Publisher's Note

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

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Wang, Y., Feng, J., Li, J. et al. Variability of boreal spring Hadley circulation over the Asian monsoon domain and its relationship with tropical SST. Clim Dyn 54, 1655–1669 (2020). https://doi.org/10.1007/s00382-019-05079-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00382-019-05079-3

Keywords

Navigation