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Atmosphere 2018, 9(6), 227; https://doi.org/10.3390/atmos9060227

Statistical Analysis of Tropical Cyclones in the Solomon Islands

1
Forecasting Section, Solomon Islands Meteorological Services, Honiala, Solomon Islands
2
Department of Physics and Geosciences, Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Nakagami-gun, Okinawa 903-0213, Japan
*
Author to whom correspondence should be addressed.
Received: 8 May 2018 / Revised: 7 June 2018 / Accepted: 8 June 2018 / Published: 12 June 2018
(This article belongs to the Special Issue Tropical Cyclones and Their Impacts)
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Abstract

This study examines tropical cyclone (TC) activity around the Solomon Islands (SIs) using best track data from the Tropical Cyclone Warning Centre, Brisbane, and the Regional Specialized Meteorological Centre, Nadi. Analysis of long-term trends showed that the frequency of TCs has decreased in this region, while the average TC intensity has increased. Datasets were classified according to the phase of Madden–Julian Oscillation (MJO) and the index of El Niño Southern Oscillation (ENSO), provided by Bureau of Meteorology. The MJO significantly influenced TC activity in the SIs, with TC genesis occurring most frequently in phases 6–8. In contrast, TC genesis occurred less frequently in phase 5. ENSO also influenced TC genesis; more TCs were generated in El Niño periods. The TC genesis locations during El Niño (La Niña) periods were significantly displaced to the north (south) over the SIs. TCs generated during El Niño conditions tended to be strong. This study also explores the modulation of TCs in terms of the seasonal climatic variability of large-scale environmental variables such as sea surface temperature (SST), low-level relative vorticity, vertical wind shear, and upper level divergence. View Full-Text
Keywords: tropical cyclone; Madden–Julian Oscillation; El Niño Southern Oscillation; South Western Pacific; global warming tropical cyclone; Madden–Julian Oscillation; El Niño Southern Oscillation; South Western Pacific; global warming
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Maru, E.; Shibata, T.; Ito, K. Statistical Analysis of Tropical Cyclones in the Solomon Islands. Atmosphere 2018, 9, 227.

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