Skip to main content
Log in

Gain of one-month lead time in seasonal prediction of Indian summer monsoon prediction: comparison of initialization strategies

  • Original Paper
  • Published:
Theoretical and Applied Climatology Aims and scope Submit manuscript

Abstract

Reasonable seasonal prediction skill for the Indian summer monsoon rainfall has been achieved using the Monsoon Mission (MM) Seasonal Forecast model, at a lead time of 3 months. The ensembles in the MM model are generated by utilizing lagged initial conditions. The possibility of enhancing the lead time is explored by using the burst ensemble approach. Comprehensive seasonal hindcast experiments carried out in this study reveal that the two methods exhibit similar skill scores for the major tropical phenomenon which govern ISMR variability. In general, the model forecasts are slightly under-dispersive but satisfactorily represent the spread-error relationship for major tropical oceanic climate modes. The ratio between the spread and RMSE is small for ISMR forecasts. Though the skill scores for the majority of indices are similar, the monsoon teleconnections seem to be quite sensitive to the initialization strategy. It is found that the burst initialization method provides a gain of 1-month lead time compared to lagged initialization strategy employed in previous studies without compromising the prediction skill. The gain of a months’ lead time with the burst ensemble approach is a tempting and useful proposition, which can be crucial for the policy- and decision-makers.

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

Similar content being viewed by others

References

Download references

Acknowledgments

The Indian Institute of Tropical Meteorology, Pune, India, is fully funded by the Ministry of Earth Sciences, Government of India, New Delhi. We thank NCAR for making the NCAR Command Language (NCL 2016) available. The authors thank the Editor, the anonymous reviewers, for their valuable comments and constructive feedback which have helped immensely in improving the manuscript.

Author information

Authors and Affiliations

Authors

Contributions

Ankur Srivastava did the model runs and data analysis and prepared the manuscript. Suryachandra A. Rao designed the hypothesis and experiments and contributed to manuscript preparation. Maheswar Pradhan assisted in data analysis. Prasanth A. Pillai assisted in manuscript preparation. V. S. Prasad created the initial conditions for the PE runs using data assimilation system.

Corresponding author

Correspondence to Suryachandra A. Rao.

Ethics declarations

Conflict of interest

The authors declare that there is no conflict of interest regarding the publication of this article.

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

Srivastava, A., Rao, S.A., Pradhan, M. et al. Gain of one-month lead time in seasonal prediction of Indian summer monsoon prediction: comparison of initialization strategies. Theor Appl Climatol 143, 1083–1096 (2021). https://doi.org/10.1007/s00704-020-03470-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00704-020-03470-3

Navigation