Articles | Volume 18, issue 3
Ocean Sci., 18, 639–657, 2022
https://doi.org/10.5194/os-18-639-2022
Ocean Sci., 18, 639–657, 2022
https://doi.org/10.5194/os-18-639-2022
Research article
 | Highlight paper
10 May 2022
Research article  | Highlight paper | 10 May 2022

Marine heatwaves in the Arabian Sea

Abhisek Chatterjee et al.

Data sets

Improvements of the Daily Optimum Interpolation Sea Surface Temperature (DOISST) Version 2.1 (https://coastwatch.pfeg.noaa.gov/erddap/) B. Huang, C. Liu, V. Banzon, E. Freeman, G. Graham, B. Hankins, T. Smith, and H.-M. Zhang https://doi.org/10.1175/JCLI-D-20-0166.1

North Indian Ocean Best Track Data Naval Oceanography Portal https://www.metoc.navy.mil/jtwc/jtwc.html?north-indian-ocean

heatwaveR: A central algorithm for the detection of heatwaves and cold-spells (https://robwschlegel.github.io/heatwaveR/index.html) R. W. Schlegel and A. J. Smit https://doi.org/10.21105/joss.00821

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Short summary
Marine heatwaves refer to discrete, prolonged warm ocean conditions known to cause severe destruction in marine ecosystems. We find that coastal waters off the west coast of India have experienced a rapid multifold increase in heatwave days since the early 80s. This resulted in more frequent and longer marine heatwave events in the last decade. We show that the rapid warming in the Arabian Sea in the last decade is the primary cause of the observed enhanced heatwave events in this basin.