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Association of Indian Summer Monsoon Variability with Mid-latitude Teleconnection in CFSv2
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  • Priyanshi Singhai,
  • Arindam Chakraborty,
  • K. Rajendran,
  • Sajani Surendran
Priyanshi Singhai
Indian Institute of Science, Bangalore, India

Corresponding Author:pspriyanshi66@gmail.com

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Arindam Chakraborty
Indian Institute of Science, Bangalore, India
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K. Rajendran
CSIR Fourth Paradigm Institute, Bangalore, India
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Sajani Surendran
CSIR Fourth Paradigm Institute, Bangalore, India
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Abstract

This study identifies the role of mid-latitude teleconnection in determining the interannual variability of the Indian summer monsoon in the CFSv2 model. Since CFSv2 has been identified as a potential forecast model for the Indian summer monsoon, it is important to understand the factors that determine its prediction skills at seasonal timescales. ENSO is one of the most important factors driving Indian monsoon variability at seasonal timescales. It is represented realistically in CFSv2. The model, however, misses associated mid-latitude teleconnections. We show that the inadequate strength of mid-latitude teleconnections, especially from the North Atlantic and North-western Pacific can be the primary reasons for the weaker monsoon variability, despite strong ENSO-Monsoon relationship in the model.