Editor's note: Cyclone Ockhi, the first severe storm in almost 40 years to have travelled about 2,400 kilometres from the Bay of Bengal to as far as the Gujarat coast, cut a path of devastation and left in its wake shattered livelihoods and broken families.This, part two of a three-part series, examines the lack of adequate measures taken to tackle the effects of the cyclone. Ockhi Cyclone and its Impact in the Kanyakumari District of Southern Tamilnadu, India: An Aftermath Analysis. Diamonds mark the positions of the Argo floats. But the case of Ockhi is peculiar. 2015 Mar 19;10(3):e0119951. Cyclone Ockhi, which formed on 29 November 2017, caused a trail of destruction. About 13,000 ha of crops was affected by this cyclone and 7654 animals were reported dead in India6. 2015 Sep 25;10(9):e0137863. From the low pressure area in Bay of Bengal, which was never anticipated to be a cyclonic storm to very severe cyclonic storm in Arabian Sea that was supposed to make landfall over Gujarat, kept the meteorologists on toes with its unusual behavior. Those with even higher wind speeds are called ‘super-cyclones’. Poor institutional response and ineffective communication strategies regarding early warnings and action resulted in huge human and capital losses. Riaz Sheriff4,P. See this image and copyright information in PMC. Situation Report 2 - Cyclone Ockhi 7th December 2017 (9:00 am) A. Cylone Storm - Ockhi OCKHI system further weakened, laid as low pressure area over south coastal Gujarat and The thermocline was located at a depth of 46.2 m (55 m) on December 4 (December 14), where the maximum buoyancy frequency was N = 0.024 s. There were two weaker cyclonic eddies within the latitude from 12°N to 18°N along the longitude 68°E before the arrival of Ockhi. Ockhi greatly changed the oceanic conditions and induced large variation in chlorophyll-a (Chl-a). 1986; 43(6): 585–605. Time series of spatially averaged…, Fig 7. Fig 5. The analysis is in Hindi, keeping in mind our Hindi Medium students. There were also some unidentified fishers from … Case study gastric ulcer. Please enable it to take advantage of the complete set of features! Ockhi cyclone was clearly accompanied with high loading of natural aerosols, particularly wind-driven sea salt aerosols, as cyclone gains intensity from the southern Arabian Sea to the north-eastern Arabian Sea. McPhaden MJ, Foltz GR, Lee T, Murty VSN, Ravichandran M, Vecchi GA, et al. Cyclone Ockhi developed as a depression on 29 No- Time series of two-day averaged Chl-a in boxes A, B, C, D and…, Fig 7. A Case Study of the Ockhi Cyclone in Kerala S. MOHAMMED IRSHAD This article examines the impact of the Ockhi cyclone on the local community in Kerala in 2017. Girishkumar MS, Ravichandran M, Han W. Observed intraseasonal thermocline variability in the Bay of Bengal. PLoS One. The strongest storm of the 2017 North Indian Ocean cyclone season, Ockhi originated from an area of disturbed weather near Sri Lanka on November 29 Proximity to land initially prevented significant strengthening; however, as it entered the Arabian Sea, favourable conditions allowed it to quickly strengthen on December 1 2013; 118(7): 3336–3349. Mumbai rains have remained on the backseat for a long time now. Ye H, Morozov E, Tang D, Wang S, Liu Y, Li Y, Tang S. PLoS One. Apurv discuss on Cyclone Ockhi. The circle size represents the maximum wind speed. Present study performed a series of model-based sensitivity experiments to evaluate tropical cyclogenesis lead detection time for five cyclone cases with varying grid resolutions ranging between 27 km and 12 km in the north Indian Ocean. PLoS One. Cyclone Ockhi to cause unusual Mumbai Rains December 3, 2017 6:21 PM | Skymet Weather Team. Akter N, Tsuboki K. Role of synoptic-scale forcing in cyclogenesis over the Bay of Bengal. Careers. eCollection 2015. In the present study, an attempt has been made to understand the mechanism of cyclogenesis, RI and recurvature of the Ockhi using satellite and reanalysis datasets. Z2017006), the Natural Science Foundation of Jiangsu Province (Grant No. 2) Significance of cyclone Ockhi As the TC passed on December 3, internal gravity waves with an inertial period of approximately 2 days were generated in the thermocline below the mixed layer. Time series of spatially averaged…, Fig 8. These responses are more pronounced in the cases of slowly moving cyclones. Time series of spatially averaged PAR in boxes A, B, C, D and…, Fig 9. The maiden tropical storm of the season, Cyclone Ockhi kept surprising everyone right from the beginning. Ocean–atmosphere interactions during cyclone Nargis. Would you like email updates of new search results? J Atmos Sci. Epub 2015 Sep 21. -. 18KJB440003). The According to Indian media, the name Ockhi means “eye” in the Bengali language. Tropical Cyclone OCKHI over the North Indian Ocean during 2017 underwent dramatic development and rapid intensification very close to the land - Sri Lanka, extreme South Indian coast and Lakshadweep area during its initial developmental stage and caused extensive damages over these areas. Time series of spatially averaged…, Fig 11. The committee understands that forecasting rapid intensification of cyclones remains an area of concern. eCollection 2020. After the passage of Ockhi, the two eddies was enhanced. Download with Google Download with Facebook. Regarding Ockhi, the IITM had the forecast five days earlier. Certainly, this was the case with cyclones Phailin in 2013, Hudhud in 2014 or Vardah in 2016. This project was supported by Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences (Grant No. Initially, role of easterly waves (EW) and Madden Jullian Oscillations (MJO) on the cyclogenesis of tropical cyclone Ockhi is addressed. Journal of Geophysical Research. Unusual path For one, Ockhi’s track, or path taken by the cyclone, was a very unusual one. It is very likely to continue moving west-northwestwards … Create a … Cyclones with wind speeds between 165 and 220 km per hour are classified as ‘extremely severe cyclonic storm’. By Cyclone Ockhi, Sneha Mary Koshy ndtv.com — Suspended Director General of Police Jacob Thomas said that he was never asked for an explanationKerala: Kerala's senior most police officer has been suspended days after he criticised the government for lapses in handling Cyclone Ockhi. Due to the lack of a forecast, many Sri Lankan fishermen were killed,” said Sobel. Thermocline regulated seasonal evolution of surface chlorophyll in the Gulf of Aden. Weather News and Analysis. 2009; 90(7): 53–54. Present work shows the effect of cyclone Ockhi which originated from a low pressure area over southwest Bay of Bengal and adjoining areas of south Sri Lanka & equatorial Indian Ocean on 28 … EOS Trans AGU. Bethesda, MD 20894, Copyright This article examines the impact of the Ockhi cyclone on the local community in Kerala in 2017. 2 Department of Applied Geology, University of Madras, Chennai, Tamilnadu, India. doi: 10.1371/journal.pone.0226189. FOIA Part I: Steady-state maintenance. 2017 Jan 15;114(1):25-34. doi: 10.1016/j.marpolbul.2016.11.008. Accessibility m, Before and after the passage of Ockhi, the sea water temperature became cooler above the depth of 50 m, decreased from 27.85°C to 27.48°C, and the salinity decreased from 36.67 to 36.54. With high PAR and little precipitation, the enhanced cyclonic eddies maintained upwelling for over ten days, enabling a high concentration of nitrates to be uplifted into the mixed layer. It isn’t common for cyclones to strike the west coast of the country. The recent Cyclone Ockhi was the most intense tropical cyclone in the Arabian Sea since Cyclone Megh in 2015. Vertical profiles of salinity (a),…, Fig 9. The ionosphere gets modulated by the upward propagating waves that originated from different meteorological processes in the troposphere such as thunderstorms, tropical cyclones etc. Ockhi is the strongest cyclone to develop in the Arabian Sea since Megh in 2015. Sivakumar2, A. Samuel Durai3,M. that cyclone Ockhi was an unusual phenomenon, which was evident in its rapid intensification. An integrated Remote sensing and GIS study has been conducted to estimate impact of Ockhi on Landuse and Landcover of Kanyakumari District. 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