caa a22 4500 605455279 CHVBK 20210128100211.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s10872-014-0263-3 doi (NATIONALLICENCE)springer-10.1007/s10872-014-0263-3 Climatology of hot events in the western equatorial Pacific [Elektronische Daten] [Anindya Wirasatriya, Hiroshi Kawamura, Teruhisa Shimada, Kohtaro Hosoda] We investigated the climatology of hot events (HEs) in the western equatorial Pacific. HEs are characterized by well-organized high sea surface temperatures (SSTs). We proposed a method for identifying HEs using a space-time-dependent threshold with a minimum areal size of 2×106 km2, and with a duration (period) of >6days. We thus identified 71 HEs from the optimally interpolated SST dataset during 2003-2011. Their mean duration, areal size, and amplitude were 18.14days, 6.30×106 km2, and 0.33°C, respectively. On average, the HEs developed more slowly than they decayed. They were distributed within the equatorial band to the subtropical Pacific (20°S-30°N), with an eastward extension to 150°W. In particular, the HEs occurred most frequently along the northern coasts of New Guinea and the Solomon Islands to 180°E. Seasonal variation in the HE distribution was observed: a northward shift during boreal summer and a southward shift during boreal winter. The distribution of HE occurrences corresponded to the climatological SST of the western Pacific warm pool. HEs occurred under conditions of low wind speeds (~2.56m/s) and high levels of solar radiation (~225W/m2). However, since the high levels of solar radiation occurred over the entire area of the western equatorial Pacific during HE periods, the low wind speed distribution became a key factor in the occurrence of HEs in the western equatorial Pacific. Seasonal shifts in wind speed and solar radiation were found to influence the seasonal shift in HE distribution. The Oceanographic Society of Japan and Springer Japan, 2014 High SST nationallicence Hot event nationallicence Merged SST nationallicence Western Pacific warm pool nationallicence SST : Sea surface temperature nationallicence HE : Hot event nationallicence NGSST-O-Global-V2.0a : New Generation Sea Surface Temperature version 2.0a nationallicence Wirasatriya Anindya Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University, Sendai, Japan aut Kawamura Hiroshi Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University, Sendai, Japan aut Shimada Teruhisa Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University, Sendai, Japan aut Hosoda Kohtaro Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University, Sendai, Japan aut Journal of Oceanography Springer Japan 71/1(2015-02-01), 77-90 0916-8370 71:1<77 2015 71 10872 https://doi.org/10.1007/s10872-014-0263-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10872-014-0263-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wirasatriya Anindya Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University, Sendai, Japan aut NATIONALLICENCE 700 1- Kawamura Hiroshi Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University, Sendai, Japan aut NATIONALLICENCE 700 1- Shimada Teruhisa Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University, Sendai, Japan aut NATIONALLICENCE 700 1- Hosoda Kohtaro Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University, Sendai, Japan aut NATIONALLICENCE 773 0- Journal of Oceanography Springer Japan 71/1(2015-02-01), 77-90 0916-8370 71:1<77 2015 71 10872