Upper air thermal inversion and their impact on the summer monsoon rainfall over Goa – A case study

Swathi, Maratt Satheesan; Muraleedharan, P.M.; Ramaswamy, V.; RameshKumar, M.R.; Aswini, Anirudhan

doi:10.1016/j.jastp.2018.01.002

Cited by 4 publications

(2 citation statements)

References 20 publications

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“…The MI also acts as an atmospheric waveguide by transporting trapped moisture towards the Indian subcontinent (Narayanan and Rao, 1981;Muraleedharan et al, 2013). Swathi et al (2018) recently reported that the variation of the MLLJ, and the associated changes in the position, strength and height of the inversion zone over the Arabia Sea, strongly modulates the variability of rainfall over the west coast of India. Though past studies suggested that the presence of MI is typically confined over the WAS, several studies (Muraleedharan et al, 2013;Swathi et al, 2018) have recently shown that the MI has been shifting eastwards towards the Eastern Arabian Sea (EAS) and the Indian peninsula, persisting over prolonged periods, specifically during the active monsoon phases (Ghosh et al, 1978;Pedgley et al, Pedgley, 1966;Bhat, 2006aBhat, , 2006b).…”

Section: Introductionmentioning

confidence: 99%

Variability of monsoon inversion over the Arabian Sea and its impact on rainfall

Dwivedi

Viswanadhapalli

Ratnam

et al. 2020

Intl Journal of Climatology

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This work investigates the spatial and temporal variability of the monsoon inversion (MI) over the Arabian Sea for the study of 37-years period (1980-2016) using MERRA version2 (MERRA2) reanalysis and downscaled simulations generated with the Weather and Research Forecasting (WRF) model. After validating the downscaled products with the observations from four radiosonde stations (Salalah, Mumbai, Goa and Mangalore), we analysed

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Section: Introductionmentioning

confidence: 99%

Variability of monsoon inversion over the Arabian Sea and its impact on rainfall

Dwivedi

Viswanadhapalli

Ratnam

et al. 2020

Intl Journal of Climatology

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“…The summer Shamal winds are driven by the pressure difference between the low‐pressure northwestern India region (heat low) and the high‐pressure eastern Mediterranean region (Pingree, 1994). The Shamal winds reach a peak magnitude of 13–15 m/s and play a major role in the transport of dust and pollutants over the AG region (Gandham et al, 2020; Muraleedharan et al, 2013; Smoydzin et al, 2012), and in establishing monsoon inversions over the Arabian Sea (Dwivedi et al, 2021; Muraleedharan et al, 2013; Swathi et al, 2018). Most of the dust activity starts from mid‐May between 20° and 30° N with the onset of the northwesterly Shamal winds (Almazroui et al, 2018; Bou Karam Francis et al, 2017), and occasionally extends up to the southern AP (Fonseca et al, 2022; Francis et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

High‐resolution climate characteristics of the Arabian Gulf based on a validated regional reanalysis

Dasari

Viswanadhapalli

Langodan

et al. 2022

Meteorological Applications

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The regional climate of the Arabian Gulf (AG) and its variability are examined based on a 40-year (1980-2019), 5-km regional reanalysis of the Arabian Peninsula (AP reanalysis). The AP reanalysis fields were first validated against the available observations over the AG, suggesting that this high-resolution reanalysis well reproduces the spatio-temporal features of the AG atmospheric circulations. The validated AP reanalysis fields were then analysed to examine the climatic characteristics over the AG including the monthly mean, maximum and minimum temperatures, and the seasonal variations in winds, relative humidity and rainfall over the AG. The AG climate is mostly dry between May and October, and experiences moderate rainfall between December and January. The higher (lower) pressure difference between the northwest and southeast AG during summer (winter) generates the northwesterly Shamal winds over the north (central) AG. The mean Shamal winds are relatively stronger (weaker) and prolonged (shorter) during summer (winter); however, the short lived Shamal jet events in winter can be occasionally stronger than summer. In terms of interannual variability, the Shamal winds are stronger and more persistent in summer during El Niño years and in winter during La Niña years. These differences are mainly associated with changes in temperature gradients between the eastern AG and northwestern AP.

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Formation and maintenance of monsoon inversion over the Arabian Sea

Dwivedi,

Pandit,

Jangid

et al. 2023

Theor Appl Climatol

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Upper air thermal inversion and their impact on the summer monsoon rainfall over Goa – A case study

Cited by 4 publications

References 20 publications

Variability of monsoon inversion over the Arabian Sea and its impact on rainfall

Variability of monsoon inversion over the Arabian Sea and its impact on rainfall

High‐resolution climate characteristics of the Arabian Gulf based on a validated regional reanalysis

Formation and maintenance of monsoon inversion over the Arabian Sea

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