Validation of satellite-derived tropical cyclone heat potential with <i>in situ</i> observations in the North Indian Ocean

Nagamani, P. V.; Ali, M. M.; Goñi, Gustavo; Pedro, DiNezio N.; Pezzullo, John C.; Bhaskar, T. V. S. Udaya; Gopalakrishna, V. V.; Kurian, Nisha

doi:10.1080/01431161.2011.640959

Cited by 17 publications

(20 citation statements)

References 10 publications

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“…The comparison between in situ and satellite‐derived TCHP shows a bias ( in situ values being on the higher side) of 8.9 kJ cm −2 with a coefficient of determination, R 2 , of 0.82 and root mean square error (RMSE) of 9.4 kJ cm −2 (Figure ). Nagamani et al () compared the two estimations over the entire north Indian Ocean (NIO) and found an RMSE of 20.95 kJ cm −2 with an R 2 of 0.65 and bias of 11.27 kJ cm −2 .…”

Section: Resultsmentioning

confidence: 99%

Heat content of the Arabian Sea Mini Warm Pool is increasing

Nagamani

Ali

Goñi

et al. 2015

Atmospheric Science Letters

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Sea surface temperature in the Arabian Sea Mini Warm Pool has been suggested to be one of the factors that affects the Indian summer monsoon. In this paper, we analyze the annual ocean heat content (OHC) of this region during 1993-2010, using in situ data, satellite observations, and a model simulation. We find that OHC increases significantly in the region during this period relative to the north Indian Ocean, and propose that this increase could have caused the decrease in Indian Summer Monsoon Rainfall that occurred at the same time.

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Section: Resultsmentioning

confidence: 99%

Heat content of the Arabian Sea Mini Warm Pool is increasing

Nagamani

Ali

Goñi

et al. 2015

Atmospheric Science Letters

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“…A summary of the estimation of TCHP from altimeter observations and its validation with in situ measurements over the north Indian Ocean during 1993–2009 is given by Nagamani et al . (). As the TCHP derived from the satellite altimeter data is limited to recent years (1993–2011), we have also used the TCHP derived from the inter‐annual three monthly mean temperature profiles (using the Equation ) of the World Ocean Atlas (WOA), which is available for the period of 1955–2011 at http://www.nodc.noaa.gov/OC5/3M_HEAT_CONTENT/anomaly_data.html.…”

Section: Methodsmentioning

confidence: 97%

On the epochal variation of intensity of tropical cyclones in the Arabian Sea

Rajeevan

Srinivasan

Kumar

et al. 2013

Atmospheric Science Letters

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During recent years, an increase in the intensity of pre-monsoon tropical cyclones (TCs) is observed over the Arabian Sea. This study suggests that this increase is due to epochal variability in the intensity of TCs and is associated with epochal variability in the stormambient vertical wind shear and tropical cyclone heat potential (TCHP). There is a significant increase (0.53 kJ cm −2 year −1 ) of TCHP during recent years. The warmer upper ocean helps TCs to sustain or increase their intensity by an uninterrupted supply of sensible and latent heat fluxes from the ocean surface to the atmosphere.

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“…In the Bay of Bengal, for example, where river water can persist in the near surface layer, salinity can have a dominant role in determining the subsurface density structure and the SSH (e.g., Yu and McPhaden, 2011); this can have a detrimental effect on the TCHP derived from satellite observations. Nevertheless, comparison of TCHP values derived from satellites and in situ observations in the Bay of Bengal has shown that satellite-derived estimates are generally unbiased, and estimates with a precision better than 20 kJ cm −2 are often obtained (Nagamani et al, 2012).…”

Section: Ocean Observationsmentioning

confidence: 99%

Ocean Observations in Support of Studies and Forecasts of Tropical and Extratropical Cyclones

et al. 2019

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Over the past decade, measurements from the climate-oriented ocean observing system have been key to advancing the understanding of extreme weather events that originate and intensify over the ocean, such as tropical cyclones (TCs) and extratropical bomb cyclones (ECs). In order to foster further advancements to predict and better understand these extreme weather events, a need for a dedicated observing system component specifically to support studies and forecasts of TCs and ECs has been identified, but such a system has not yet been implemented. New technologies, pilot networks, targeted deployments of instruments, and state-of-the art coupled numerical models have enabled advances in research and forecast capabilities and illustrate a potential framework for future development. Here, applications and key results made possible by the different ocean observing efforts in support of studies and forecasts of TCs and ECs, as well as recent advances in observing technologies and strategies are reviewed. Then a vision and specific recommendations for the next decade are discussed.

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Validation of satellite-derived tropical cyclone heat potential with in situ observations in the North Indian Ocean

Cited by 17 publications

References 10 publications

Heat content of the Arabian Sea Mini Warm Pool is increasing

Heat content of the Arabian Sea Mini Warm Pool is increasing

On the epochal variation of intensity of tropical cyclones in the Arabian Sea

Ocean Observations in Support of Studies and Forecasts of Tropical and Extratropical Cyclones

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