The Influence of El Niño–Southern Oscillation on Tropical Cyclone Activity in the Eastern North Pacific Basin
The interannual variability of tropical cyclone (TC) activity due to El Niño–Southern Oscillation (ENSO) in the main development region of the eastern North Pacific basin has received scant attention. Herein the authors classify years of El Niño, La Niña, and neutral conditions using the multivariat...
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description | The interannual variability of tropical cyclone (TC) activity due to El Niño–Southern Oscillation (ENSO) in the main development region of the eastern North Pacific basin has received scant attention. Herein the authors classify years of El Niño, La Niña, and neutral conditions using the multivariate ENSO index (MEI). Storm measurements of the net tropical cyclone activity index and power dissipation index are used to summarize the overall seasonal TC activity and TC intensity between 1971 and 2012. Both measures are found to be statistically dependent on the ENSO phases in the basin’s main development region. However, when the area is longitudinally divided, only the western portion of the development region experienced a significant difference (p< 0.05). Specifically, El Niño years are characterized by more frequent, more intense events compared to La Niña conditions for this subregion. Correlation analyses on the relationships between the MEI and both TC indices demonstrate correlations between ENSO and TC activity and intensity that are statistically significant (p< 0.05) only in the western region. These relationships have the potential to improve the short-term forecast of the local TC activity and intensity on a seasonal basis for public awareness and disaster preparation. |
doi_str_mv | 10.1175/JCLI-D-14-00248.1 |
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Herein the authors classify years of El Niño, La Niña, and neutral conditions using the multivariate ENSO index (MEI). Storm measurements of the net tropical cyclone activity index and power dissipation index are used to summarize the overall seasonal TC activity and TC intensity between 1971 and 2012. Both measures are found to be statistically dependent on the ENSO phases in the basin’s main development region. However, when the area is longitudinally divided, only the western portion of the development region experienced a significant difference (p< 0.05). Specifically, El Niño years are characterized by more frequent, more intense events compared to La Niña conditions for this subregion. Correlation analyses on the relationships between the MEI and both TC indices demonstrate correlations between ENSO and TC activity and intensity that are statistically significant (p< 0.05) only in the western region. These relationships have the potential to improve the short-term forecast of the local TC activity and intensity on a seasonal basis for public awareness and disaster preparation.</description><identifier>ISSN: 0894-8755</identifier><identifier>EISSN: 1520-0442</identifier><identifier>DOI: 10.1175/JCLI-D-14-00248.1</identifier><language>eng</language><publisher>Boston: American Meteorological Society</publisher><subject>Correlation analysis ; Correlations ; Cyclones ; Cyclonic activity ; El Nino ; El Nino phenomena ; El Nino-Southern Oscillation event ; Energy dissipation ; Environmental conditions ; Global warming ; Hurricanes ; Influence ; Interannual variability ; La Nina ; Ocean currents ; Oscillation ; Public awareness ; Sea level ; Sea surface temperature ; Seasons ; Southern Oscillation ; Statistical analysis ; Storm damage ; Storms ; Time series ; Tropical cyclone activity ; Tropical cyclone intensities ; Tropical cyclones ; Tropical regions</subject><ispartof>Journal of climate, 2015-03, Vol.28 (6), p.2459-2474</ispartof><rights>2015 American Meteorological Society</rights><rights>Copyright American Meteorological Society Mar 15, 2015</rights><rights>Copyright American Meteorological Society 2015</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c399t-1dfda5214d42119edde75501c941604e31810ebe77b31402f6bd317fcb03858b3</citedby><cites>FETCH-LOGICAL-c399t-1dfda5214d42119edde75501c941604e31810ebe77b31402f6bd317fcb03858b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/26194467$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/26194467$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,776,780,799,3667,27903,27904,57995,58228</link.rule.ids></links><search><creatorcontrib>Jien, Jerry Y.</creatorcontrib><creatorcontrib>Gough, William A.</creatorcontrib><creatorcontrib>Butler, Ken</creatorcontrib><title>The Influence of El Niño–Southern Oscillation on Tropical Cyclone Activity in the Eastern North Pacific Basin</title><title>Journal of climate</title><description>The interannual variability of tropical cyclone (TC) activity due to El Niño–Southern Oscillation (ENSO) in the main development region of the eastern North Pacific basin has received scant attention. Herein the authors classify years of El Niño, La Niña, and neutral conditions using the multivariate ENSO index (MEI). Storm measurements of the net tropical cyclone activity index and power dissipation index are used to summarize the overall seasonal TC activity and TC intensity between 1971 and 2012. Both measures are found to be statistically dependent on the ENSO phases in the basin’s main development region. However, when the area is longitudinally divided, only the western portion of the development region experienced a significant difference (p< 0.05). Specifically, El Niño years are characterized by more frequent, more intense events compared to La Niña conditions for this subregion. Correlation analyses on the relationships between the MEI and both TC indices demonstrate correlations between ENSO and TC activity and intensity that are statistically significant (p< 0.05) only in the western region. These relationships have the potential to improve the short-term forecast of the local TC activity and intensity on a seasonal basis for public awareness and disaster preparation.</description><subject>Correlation analysis</subject><subject>Correlations</subject><subject>Cyclones</subject><subject>Cyclonic activity</subject><subject>El Nino</subject><subject>El Nino phenomena</subject><subject>El Nino-Southern Oscillation event</subject><subject>Energy dissipation</subject><subject>Environmental conditions</subject><subject>Global warming</subject><subject>Hurricanes</subject><subject>Influence</subject><subject>Interannual variability</subject><subject>La Nina</subject><subject>Ocean currents</subject><subject>Oscillation</subject><subject>Public awareness</subject><subject>Sea level</subject><subject>Sea surface temperature</subject><subject>Seasons</subject><subject>Southern Oscillation</subject><subject>Statistical analysis</subject><subject>Storm 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climate</jtitle><date>2015-03-15</date><risdate>2015</risdate><volume>28</volume><issue>6</issue><spage>2459</spage><epage>2474</epage><pages>2459-2474</pages><issn>0894-8755</issn><eissn>1520-0442</eissn><abstract>The interannual variability of tropical cyclone (TC) activity due to El Niño–Southern Oscillation (ENSO) in the main development region of the eastern North Pacific basin has received scant attention. Herein the authors classify years of El Niño, La Niña, and neutral conditions using the multivariate ENSO index (MEI). Storm measurements of the net tropical cyclone activity index and power dissipation index are used to summarize the overall seasonal TC activity and TC intensity between 1971 and 2012. Both measures are found to be statistically dependent on the ENSO phases in the basin’s main development region. However, when the area is longitudinally divided, only the western portion of the development region experienced a significant difference (p< 0.05). Specifically, El Niño years are characterized by more frequent, more intense events compared to La Niña conditions for this subregion. Correlation analyses on the relationships between the MEI and both TC indices demonstrate correlations between ENSO and TC activity and intensity that are statistically significant (p< 0.05) only in the western region. These relationships have the potential to improve the short-term forecast of the local TC activity and intensity on a seasonal basis for public awareness and disaster preparation.</abstract><cop>Boston</cop><pub>American Meteorological Society</pub><doi>10.1175/JCLI-D-14-00248.1</doi><tpages>16</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Correlation analysis Correlations Cyclones Cyclonic activity El Nino El Nino phenomena El Nino-Southern Oscillation event Energy dissipation Environmental conditions Global warming Hurricanes Influence Interannual variability La Nina Ocean currents Oscillation Public awareness Sea level Sea surface temperature Seasons Southern Oscillation Statistical analysis Storm damage Storms Time series Tropical cyclone activity Tropical cyclone intensities Tropical cyclones Tropical regions |
title | The Influence of El Niño–Southern Oscillation on Tropical Cyclone Activity in the Eastern North Pacific Basin |
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