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This study aims to investigate the possible influence of different atmospheric forcing on intensification/dissipation of tropical cyclonic “Nilofar” in Arabian Sea appeared during the last week of October, 2014 which exhibited abrupt intensification and dissipation as well. The cyclone was monitored by the Tropical Cyclone Warning Center (TCWC) of Pakistan Meteorological | department and the Regional Specialized Meteorological Center (RSMC) of Indian Meteorological | department (IMD) continuously, issued warnings and advisories with the help of available synoptic observations, satellite data and numerical models. Almost all the essential ingredients for intensification and tracking of the cyclone were studied and monitored accurately. Although the track forecast of the cyclone remained up to mark; but great errors occurred in intensity forecast. The atmospheric vertical wind shear could not be studied accurately. The intensity of wind shear itself is dependent on both; the local and global atmospheric forcing and climate variables, reoccurring periodically, especially while occurring two or more at the same time. More studies are required for influence of these climate variables while co-occurring at the same time period. This study will help weather forecasters to pay special attention on variation of climate factors affecting the wind shear for proper forecasting of tropical cyclones in the Arabian Sea for the safety of coastal communities along the coast.
References
Singh OP, Khan TMA, Rahman MS. Changes in the frequency of tropical cyclones over the North Indian Ocean. Meteorol. Atmos. Phys 2000; 75: 11-20.
Pattanaik DR. Variability of oceanic and atmospheric conditions during active and inactive periods of storms over the Indian region. Int. J. Climatol 2005; 25: 1523-1530.
Balaguru K, Taraphdar S, Leung LR, Foltz GR. Increase in the intensity of post monsoon Bay of Bengal tropical cyclones. Geo Re Letters 2014; 41(10): 3594-3601. https://doi.org/10.1002/2014GL060197
Wang B, Chan JCL. How Strong ENSO Events Affect Tropical Storm Activity over the Western North Pacific. J Climate 2002; 1: 1643-1658. https://doi.org/10.1175/1520-0442(2002)015<1643:HSEEAT>2.0.CO;2
Mahala BK, Nayak BK, Mohanty PK. Impacts of ENSO and IOD on tropical cyclone activity in the Bay of Bengal. Nat Hazards 2015; 75(2): 1105-1125. https://doi.org/10.1007/s11069-014-1360-8
Evan AT, James PK, Chul EC, Ramanathan V. Arabian Sea tropical cyclones intensified by emissions of black carbon and other aerosols. Nature 2011; 479: 94-97. https://doi.org/10.1038/nature10552
Jinhua YU, Wan Y. Response of tropical cyclone potential intensity over the north Indian Ocean to global warming. Geo Re Letters 2009; 36; L03709. https://doi.org/10.1029/2008GL036742
DeMaria M. The effect of vertical wind shear on tropical cyclone intensity change. J Atm Sci 1996; 53(14): 2076-2087. https://doi.org/10.1175/1520-0469(1996)053<2076:TEOVSO>2.0.CO;2
Trenberth KE, Hoar TJ. The 1990-1995 El Niño-Southern Oscillation event: Longest on record. Geo Res Letters 1996; 23: 57-60. https://doi.org/10.1029/95GL03602
Gray W M. Atlantic seasonal hurricane frequency: Part I, El Niño and 30 mb quasi-biennial oscillation influences. Mon Wea Rev 1984 a; 112: 1649-1668.
Chu PS. ENSO and tropical cyclone activity. Hurricanes and typhoons: past, present and future. Murnane RJ, Liu KB, Eds., Columbia University Press, p. 297328; 2004.
Landsea CW. El Nin˜o-Southern Oscillation and the seasonal predictability of tropical cyclones. Cambridge: Cambridge University Press 2000; p. 149-181.
Madden RA and Julian PR. Description of global-scale circulation cells in the tropics with a 40-50 day period. J. Atmos. Sci 1972; 29: 1109-1123.
Madden RA and Julian PR. Observations of the 40-50 day tropical oscillation - A review. Mon Wea Rev 1994; 122: 814-837. https://doi.org/10.1175/1520-0493(1994)122<0814:OOTDTO>2.0.CO;2
Zhang C. Madden-Julian Oscillation. Rev Geophy 2004; 43: RG 2003/2005(1-36) Paper No. 2004 RG 000158.
Wang B, Rui H. Synoptic climatology of transient tropical intraseasonal convection anomalies. 1975-1985 Meteor Atmos Phys 1990; 44: 43-61. https://doi.org/10.1007/BF01026810
Saji NH, Goswami BN, Vinayachandran PN, Yamagata T. A Dipole Mode in the tropical Indian Ocean. Nature 1999; 401: 360-363. https://doi.org/10.1038/43854
Yuan JP, Jie CAO. North Indian Ocean tropical cyclone activities influenced by the Indian Ocean Dipole mode. Sci China Earth Sci 2013; 56.
Camargo S J, Sobel A H. Revisiting the Influence of the Quasi-Biennial Oscillation on Tropical Cyclone Activity. J Clim 2010; 23: 5810-5825. https://doi.org/10.1175/2010JCLI3575.1
Balachandran S, Guhathakurta P. On the Influence of QBO over North Indian Ocean Storm and Depression Tracks. Meteorol Atoms Phys 1999; 70: 111-118. https://doi.org/10.1007/s007030050028
DeMaria M. The effect of vertical shear on tropical cyclone intensity change JAS 1996; 53: 2076-2087.
Gray WM, Landsea CW, Mielke PW, Berry KJ. Predicting Atlantic basin seasonal tropical cyclone activity by 1 August. Wea Fore, 1993; 8: 73-86. https://doi.org/10.1175/1520-0434(1993)008<0073:PABSTC>2.0.CO;2
Knaff, JA. Implications of summertime sea level pressure anomalies in the tropical Atlantic region. Mon Wea Rev 1997; 10: 789-804. https://doi.org/10.1175/1520-0442(1997)010<0789:IOSSLP>2.0.CO;2
Gray WM. Global view of the origins of tropical disturbances and storms. Mon Wea Rev 1968; 96: 669-700. https://doi.org/10.1175/1520-0493(1968)096<0669:GVOTOO>2.0.CO;2
Ray CL. Relation of tropical cyclone frequency to summer pressures and ocean surface-water temperatures 1935; Mon Wea Rev 63: 10-12.
Very Severe Cyclonic Storm Nilofar over Arabian Sea (25-31 October, 2014): A report. Cyclone warning division, India Meteorological Department (IMD) New Delhi. November 2014.
Sarker MA Cyclone hazards in Arabian Sea-A numerical modeling case study of Cyclone Nilofar. Wat Env J (CIWEM) 2016. https://doi.org/10.1111/wej.12214
Joint Typhoon Warning Center JTWC-For Best track archive and annual tropical cyclone reports [Cited 2014 Oct 28
Cooperative institute of Meteorological Satellite Studies (CIMSS) University of Wisconsin [Cited 2014 Oct 28
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