We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Influence of boreal summer monsoon intraseasonal oscillations on the occurrences of Marine Heatwave events over the North Bay of Bengal.
- Authors
Mandal, Moulik; Konda, Gopinadh; Krishna Vissa, Naresh; Chowdary, Jasti S.
- Abstract
In the present study, the properties of Marine Heatwave (MHW) events over the North Bay of Bengal (BoB) are investigated during the boreal summer monsoon season. In recent decades (2001–2021), an increase in frequency and duration of MHW events are depicted, prominently after 2010. This accelerated trend in MHW events duration is primarily driven by the rapid ocean warming and is a great concern for the scientific as well as fisheries communities. Tropical intraseasonal oscillations are one of the dominant modes that control the oceanic and atmospheric processes. Here, for the first time, we have investigated the role of northward propagating monsoon intraseasonal oscillations (MISO) on the occurrences of MHW events over the north BoB during the boreal summer (monsoon season). It is found that during the break phases of MISO, enhanced shortwave radiation due to clear sky conditions triggers the MHW events. In addition, shallow mixed layer depth (MLD) also mostly favours the occurrences of MHW events over the north BoB during the break phases of MISO. However, during the active phases of MISO, negative sea surface temperature (SST) anomalies, and fewer MHW events are depicted over the north BoB. This strong relationship between shallow MLD and the occurrences of MHW events primarily indicates the connection of regional air-sea heat flux in driving the MHW events over the north BoB. The consequences of MHW events on socioeconomic status are also projected to be extensive, serious, and persistent throughout the twenty-first century.
- Subjects
NORTH Bay (Ont.); BENGAL (India); MARINE heatwaves; MADDEN-Julian oscillation; HEAT waves (Meteorology); OCEAN temperature; MIXING height (Atmospheric chemistry)
- Publication
Climate Dynamics, 2024, Vol 62, Issue 2, p861
- ISSN
0930-7575
- Publication type
Article
- DOI
10.1007/s00382-023-06945-x