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Dynamics of westward propagation and intensification of Lakshadweep low in the southern Arabian Sea

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Abstract

Westward propagation and the dynamics of intensification of Lakshadweep low (LL) have been investigated in detail. In this study, it is observed that LL is not propagated westwards in a single stretch to the western boundary of the southern Arabian Sea but takes place in multiple phases of propagation as well as through multiple eddy formations. LL forms in the southeastern Arabian Sea during the end of May and translates westward and propagates northward and southwestward due to the influence of surface currents existing in the region. LL propagates westward approximately along 7° N and intensifies throughout its westward track nearly up to 55°E, where it gets annihilated with time. The intensification is attributed to the cyclonic vorticity induced due to the meridional shear in the zonal velocity component of eastward flowing Wyrkti jet existing in the region. The intensification of LL is inferred from the decrease of sea surface height anomaly (SSHA) as well as from the uplift of thermocline depth at the core of LL. The region of cyclonic vorticity propagates westward concurrently with the westward progression of the core of Wyrtki jet.

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References

  • Bjerkins J, Holmboe J (1944) On the theory of tropical cyclones. J Meteorol 1:1–22

    Article  Google Scholar 

  • Bruce JG (1968) Comparison of near surface dynamic topography during the two monsoons in the western Indian Ocean. Deep-Sea Res 15:665–667

    Google Scholar 

  • Bruce JG (1973) Large scale variations of the Somali current during southwest monsoon, 1970. Deep-Sea Res 20:837–846

    Google Scholar 

  • Bruce JG (1979) Eddies off the Somali coast during southwest monsoon. J Geophys Res 84:7742–7748

    Article  Google Scholar 

  • Bruce JG, Beatty WH (1985) Some observations of the coalescing of the Somali eddies and a description of the Socotra eddy, westward propagating long Rossby waves. Source Oceanol Acta 78:207–219

    Google Scholar 

  • Bruce JG, Johnson DR, Kindle JC (1994) Evidence for eddy formation in the eastern Arabian Sea during the northeast monsoon. J Geophys Res 99:7651–7664

    Article  Google Scholar 

  • Bruce JG, Kindle JC, Kantha LH, Kerling JL, Baily JF (1996) A note on recent observations in the Arabian Sea Laccadive Eddy region. J Geophys Res 103:7593–7600

    Article  Google Scholar 

  • Chang P, Philander SGH (1989) Rossby wave packets in baroclinic mean currents. Deep-Sea Res 36A:17–37

    Article  Google Scholar 

  • Chassignet EP, Cushman-Roisin B (1991) On the influence of a lower layer on the propagation of nonlinear oceanic eddies. J Phys Oceanogr 21:939–957

    Article  Google Scholar 

  • Chassignet EP, Olson DB, Boudra DB (1990) Motion and evolution of oceanic rings in a numerical model and in observations. J Geophys Res 95:22121–22140

    Article  Google Scholar 

  • Chelton DB, Schlax MG, Samelson RM (2011) Global observations of nonlinear mesoscale eddies. Prog Oceanogr 91(2):167–216

    Article  Google Scholar 

  • Cipollini P, Cromwell D, Challenor PG, Raffaglio S (2001) Rossby waves detected in global ocean colour data. Geophys Res Lett 28:323–326

    Article  Google Scholar 

  • Cushman-Roisin B, Tang B, Chassignet E (1990) Westward motion of mesoscale eddies. J Phys Oceanogr 20(5):758–768

    Article  Google Scholar 

  • Dewar WK, Gailliard C (1994) The dynamics of barotropically dominated rings. J Phys Oceanogr 24:5–29

    Article  Google Scholar 

  • Falkowski PG, Ziemann D, Kolber Z, Bienfang PK (1991) Role of eddy pumping in enhancing primary production in the ocean. Nature 352:55–58

    Article  Google Scholar 

  • Firing E, Beardsley RC (1976) The behaviour of barotropic eddies on a Beta plane. J Phys Oceanogr 6:57–65

    Article  Google Scholar 

  • Fisscher J, Schott F, Stramma L (1996) Currents and transport of the great whirl–Socotra gyre system during the summer monsoon august 1993. J Geophys Res 101:3573–3587

    Article  Google Scholar 

  • Flierl GR (1977) The application of linear quasi geostrophic dynamics to gulf stream rings. J Phys Oceanogr 7:365–379

    Article  Google Scholar 

  • Fu L-L, Chelton DB (2001) Large-scale ocean circulation, chapter 2. In: Fu L-L, Cazenave A (eds) Sattelite altimetry and earth sciences; A handbook of techniques and applictions. International Standard Book Number-0-12-269545-3. Academic Press, A Harcourt Science and Technology Company, San Diego, pp 133–169

  • Gopalan AKS, Gopalakrishna VV, Ali MM, Rashmi S (2000) Detection of Bay of Bengal eddies from TOPEX and in situ observations. J Mar Res 58:721–734

    Article  Google Scholar 

  • Jensen TG (1991) Modeling the seasonal undercurrents in the Somali current system. J Geophys Res 96:22151–22167

    Article  Google Scholar 

  • Kawamiya M, Oschlies A (2001) Formation of a basin-scale surface chlorophyll pattern by Rossby waves. Geophys Res Lett 28:4139–4142

    Article  Google Scholar 

  • Killworth PD (1983) On the motion of isolated lenses on a beta-plane. J Phys Oceanogr 13:368–376

    Article  Google Scholar 

  • Klein P, Lapeyre G (2009) The oceanic vertical pump induced by mesoscale and submesoscale turbulence. Annu Rev Mar Sci 1:351–375

    Article  Google Scholar 

  • Knox R (1976) On a long series of measurements of Indian Ocean equatorial currents near Addu Atoll. Deep-Sea Res 23:211–221

    Google Scholar 

  • LeBlond PH, Mysak LA (1978) Waves in the ocean, 1st edn. Elsevier Scientific Publishing Company, Amsterdam, pp 446–448

    Google Scholar 

  • Lopez JW, Kantha LH (1998) Results from a numerical model of the northern Indian Ocean: circulation in the south Arabian Sea. J Mar Syst 24(2000):97–117

    Google Scholar 

  • McCreary JP, Kundu PK, Molinari RL (1993) A numerical investigation of dynamics, thermodynamics and mixed-layer processes in the Indian Ocean. Prog Oceanogr 31:181–244

    Article  Google Scholar 

  • McCreary JP, Han W, Shankar D, Shetye SR (1996) Dynamics of the East India coastal current, 2, numerical solutions. J Geophys Res 101:13993–14010

    Article  Google Scholar 

  • McGillicuddy DJ, Jr AR, Robinson Siegel DA, Jannasch HW, Johnson R, Dickey TD, McNeil J, Michaels AF, Knap AH (1998) Influence of mesoscale eddies on new production in the Sargasso Sea. Nature 394:263–266

    Article  Google Scholar 

  • McWilliams JC, Flierl GR (1979) On the evolution of isolated, nonlinear vortices. J Phys Oceanogr 9:1155–1182

    Article  Google Scholar 

  • Mied RP, Lindemann GJ (1979) The propagation and evolution of cyclonic Gulf Stream rings. J Phys Oceanogr 9:1183–1206

    Article  Google Scholar 

  • Nerem RS, Schrama EJ, Koblinsky CJ, Beckley BD (1994) A preliminary evaluation of ocean topography from the TOPEX/POSEIDON mission. J Geophys Res 99(24):565–24 583

    Google Scholar 

  • Rao AD, Joshi M, Ravichandran M (2008) Oceanic upwelling and downwelling processes in waters off the west coast of India. Ocean Dyn 58:213–216

    Article  Google Scholar 

  • Schott F (1983) Monsoon response of the Somali current and associated upwelling. Prog Oceanogr 2:357–381

    Article  Google Scholar 

  • Shankar D, Shetye SR (1997) On the dynamics of the Lakshadweep high and low in the southeastern Arabian Sea. J Geophys Res 102:12551–12562

    Article  Google Scholar 

  • Shetye SR (1998) West India coastal current and Lakshadweep high/low. SADHANA 23(5-6):637–651

    Article  Google Scholar 

  • Shetye SR, Gouveia AD, Shenoi SSC, Sundar D, Michael GS, Almeida M, Santanam K (1990) Hydrography and circulation of the west coast of India during the southwest monsoon 1987. J Mar Res 48:359–378

    Article  Google Scholar 

  • Siegel D (2001) The Rossby rototiller. Nature 409:576–577

    Article  Google Scholar 

  • Sikhakollil R, Sharma R, Basu S, Gohil BS, Sarkar A, Prasad KVSR (2013) Evaluation of OSCAR Ocean surface current product in the tropical Indian Ocean using in situ data. J Earth Syst Sci 122(1):187–199

    Article  Google Scholar 

  • Smith DC, Reid RO (1982) A numerical study of non frictional decay of mesoscale eddies. J Phys Oceanogr 12:244–255

    Article  Google Scholar 

  • Swallow JC, Molinari RL, Bruce JG, Brown OB, Evans RH (1983) Development of near surface flow and water mass distribution in Somali basin in response to the southwest monsoon of 1979. Inst Oceanogr Sci 3:1398–1415

    Google Scholar 

  • Sweeney EN, McGillicuddy DJ Jr, Buesseler KO (2003) Biogeochemical impacts due to 25 mesoscale eddy activity in the Sargasso Sea as measured at the Bermuda Atlantic Time series Study (BATS). Deep Sea Res, Pt II 50:3017–3039 951

    Article  Google Scholar 

  • Tapley BD, Chambers DP, Shum CK, Eanes RJ, Ries JC, Stewart RH (1994) Accuracy assessment of the large scale dynamic ocean topography from TOPEX/POSEIDON altimetry. J Geophys Res 99:24605–24617

    Article  Google Scholar 

  • Uz BM, Yoder JA, Osychny V (2001) Pumping of nutrients to ocean surface waters by the action of propagating planetary waves. Nature 409:597–600

    Article  Google Scholar 

  • White WB, Saur JFT (1981) A source of annual baroclinic waves in the eastern subtropical North Pacific. J Phys Oceanogr 11:1452–1462

    Article  Google Scholar 

  • White WB, Saur JFT (1983) Sources of interannual baroclinic waves in the eastern subtropical North Pacific. J Phys Oceanogr 13:531–543

    Article  Google Scholar 

  • Woodworth PL, Bell C, Hughes CW (1995) Monitoring changes in global sea level and ocean transport with satellite altimetry and tide gauges. Paper presented at 21st general assembly, Int Union of Geoid and Geophys, Boulder, Colorado, July, 2–14, 1995

  • Wyrtki K (1973) An equatorial jet in the Indian Ocean. Science 181:262–264

    Article  Google Scholar 

  • Wyrtki K, Bennett EB, Rochford DJ (1971) Oceanographic Atlas of the International Indian Ocean Expedition. Prepared by University of Hawaii, Honolulu, under the grant from National Science Foundation (GA-1279, GA-10277). National Science Foundation, Washington, D.C.

  • Yu L, O'Brien JJ, Yang J (1991) On the remote forcing of the circulation in the Bay of Bengal. J Geophys Res 96:20449–20454

    Article  Google Scholar 

Download references

Acknowledgements

The first two authors are grateful to Cochin University of Science and Technology (CUSAT), Kochi and third author are grateful to the Director, Indian Institute of Tropical meteorology (IITM), Pune, India, for providing the research facility. The authors are obliged to Asia Pacific Data Research Center (APDRC) for providing the data sets to carry out the research analysis. The authors are deeply grateful to the reviewer for the elaborative and constructive review.

Funding

The authors acknowledge support from Department of Science and Technology (DST) in the form of a Science and Engineering Research Board (SERB) project (EMR/2016/003682).

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Authors and Affiliations

  1. Department of Atmospheric Sciences, School of Marine Sciences, Cochin University of Science and Technology, Cochin, Kerala, 682016, India

    Johnson Zachariah & Chethalan Anthony Babu

  2. Indian Institute of Tropical Meteorology, Pashan, Pune, Maharashtra, 411008, India

    Hamza Varikoden

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  1. Johnson Zachariah
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  2. Chethalan Anthony Babu
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  3. Hamza Varikoden
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Correspondence to Johnson Zachariah.

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Zachariah, J., Babu, C.A. & Varikoden, H. Dynamics of westward propagation and intensification of Lakshadweep low in the southern Arabian Sea. Ocean Dynamics 69, 519–528 (2019). https://doi.org/10.1007/s10236-019-01263-5

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