A Bayesian Machine Learning Algorithm for Predicting ENSO Using Short Observational Time Series

Nan Chen, Faheem Gilani, John Harlim

Research output: Contribution to journalArticlepeer-review

Abstract

A simple and efficient Bayesian machine learning (BML) training algorithm, which exploits only a 20-year short observational time series and an approximate prior model, is developed to predict the Niño 3 sea surface temperature (SST) index. The BML forecast significantly outperforms model-based ensemble predictions and standard machine learning forecasts. Even with a simple feedforward neural network (NN), the BML forecast is skillful for 9.5 months. Remarkably, the BML forecast overcomes the spring predictability barrier to a large extent: the forecast starting from spring remains skillful for nearly 10 months. The BML algorithm can also effectively utilize multiscale features: the BML forecast of SST using SST, thermocline, and windburst improves on the BML forecast using just SST by at least 2 months. Finally, the BML algorithm also reduces the forecast uncertainty of NNs and is robust to input perturbations.

Original languageEnglish (US)
Article numbere2021GL093704
JournalGeophysical Research Letters
Volume48
Issue number17
DOIs
StatePublished - Sep 16 2021

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Fingerprint

Dive into the research topics of 'A Bayesian Machine Learning Algorithm for Predicting ENSO Using Short Observational Time Series'. Together they form a unique fingerprint.

Cite this