Role and response of ocean–atmosphere interactions during Amphan (2020) super cyclone

Vissa, Naresh Krishna; Anandh, P. C.; Gulakaram, Venkata Sai; Konda, Gopinadh

doi:10.1007/s11600-021-00671-w

Cited by 8 publications

(2 citation statements)

References 87 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Considering that there have been some studies that specifically describe the movement of Amphan from formation to landing (Roman-Stork and Subrahmanyam 2020 ; Vissa et al 2021 ; Chauhan et al 2021b ), this section will mainly focus on analyzing the variations of the atmospheric, meteorological, and oceanographic parameters during Amphan’s life cycle.…”

Section: Spatiotemporal Characteristics Of Amphan-related Parametersmentioning

confidence: 99%

Dynamical characteristics of Amphan and its impact on COVID-19 cases in Bangladesh

Meng

Zhang

Liu

et al. 2023

Meteorol Atmos Phys

View full text Add to dashboard Cite

In May 2020, a category-5 tropical cyclone (TC) Amphan formed in the Bay of Bengal and struck the coasts of India and Bangladesh. In this study, the relevant dynamic characteristics and aftermaths of Amphan are documented. Through detailed investigation of the reanalysis and observation data, spatiotemporal varying characteristics of the atmospheric and oceanic parameters during the Amphan propagation process were analyzed. Due to a wide range of high sea surface temperature anomaly, Amphan developed rapidly and ultimately led to the local heavy precipitation and strong winds in the coastal areas during its passage. It is also noted that the recorded wave height, wave period, and current speed all amplified when Amphan passed by and the characteristics of wave and current directions are also consistent with the temporal variation of the corresponding wind field. Meanwhile, Amphan occurred in accompany with the ongoing COVID-19 pandemic. In Khulna Division of Bangladesh, the number of newly confirmed COVID-19 cases increased rapidly after Amphan landing, which however was almost nil before the event, indicating there might exist a possible correlation between Amphan and the intensive outbreak of the local COVID-19, and particular attentions should be paid to deal with the multi-type, coexisting disasters if different or even conflicting measures are required.

show abstract

Section: Spatiotemporal Characteristics Of Amphan-related Parametersmentioning

confidence: 99%

Dynamical characteristics of Amphan and its impact on COVID-19 cases in Bangladesh

Meng

Zhang

Liu

et al. 2023

Meteorol Atmos Phys

View full text Add to dashboard Cite

show abstract

“…In our study, we did not consider factors of large-scale variability, but previous studies have shown the role of the Madden Julian Oscillation, coupled with a downwelling Kelvin wave in the genesis of tropical cyclone Amphan (Roman-Stork and Subrahmanyam, 2020;Vissa et al, 2021). However, they did not focus on the importance of these large-scale features for the MHW observed during Amphan.…”

Section: Re-emergence Of the Mhwmentioning

confidence: 99%

Interactions Between a Marine Heatwave and Tropical Cyclone Amphan in the Bay of Bengal in 2020

et al. 2022

View full text Add to dashboard Cite

Interactions are diagnosed between a marine heatwave (MHW) event and tropical super cyclone Amphan in the Bay of Bengal. In May 2020, an MHW developed in the Bay of Bengal driven by coupled ocean-atmosphere processes which included shoaling of the mixed layer depth due to reduced wind speed, increased net surface shortwave radiation flux into the ocean, increased upper ocean stratification, and increased sub-surface warming. Ocean temperature, rather than salinity, dominated the stratification that contributed to the MHW development and the subsurface ocean warming that also increased tropical cyclone heat potential. The presence of this strong MHW with sea surface temperature anomalies >2.5°C in the western Bay of Bengal coincided with the cyclone track and facilitated the rapid intensification of tropical cyclone Amphan to a super cyclone in just 24 h. This rapid intensification of a short-lived tropical cyclone, with a lifespan of 5 days over the ocean, is unprecedented in the Bay of Bengal during the pre-monsoon period (March-May). As the cyclone approached landfall in northern India, the wind-induced mixing deepened the mixed layer, cooled the ocean's surface, and reduced sub-surface warming in the bay, resulting in the demise of the MHW. This study provides new perspectives on the interactions between MHWs and tropical cyclones that could aid in improving the current understanding of compound extreme events that have severe socio-economic consequences in affected countries.

show abstract

Statistical Characteristics of Extreme Rainfall Events Over the Indian Subcontinent

Anandh

Vissa

Tyagi

2022

Extreme Natural Events

View full text Add to dashboard Cite

Role and response of ocean–atmosphere interactions during Amphan (2020) super cyclone

Cited by 8 publications

References 87 publications

Dynamical characteristics of Amphan and its impact on COVID-19 cases in Bangladesh

Dynamical characteristics of Amphan and its impact on COVID-19 cases in Bangladesh

Interactions Between a Marine Heatwave and Tropical Cyclone Amphan in the Bay of Bengal in 2020

Statistical Characteristics of Extreme Rainfall Events Over the Indian Subcontinent

Contact Info

Product

Resources

About