Verification of tropical cyclone heat potential for tropical cyclone intensity forecasting in the Western North Pacific

Verfasser / Beitragende:
[Akiyoshi Wada]
Ort, Verlag, Jahr:
2015
Enthalten in:
Journal of Oceanography, 71/4(2015-08-01), 373-387
Format:
Artikel (online)
ID: 605455473
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024 7 0 |a 10.1007/s10872-015-0298-0  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s10872-015-0298-0 
100 1 |a Wada  |D Akiyoshi  |u Meteorological Research Institute, 1-1 Nagamine, 305-0052, Tsukuba, Ibaraki, Japan  |4 aut 
245 1 0 |a Verification of tropical cyclone heat potential for tropical cyclone intensity forecasting in the Western North Pacific  |h [Elektronische Daten]  |c [Akiyoshi Wada] 
520 3 |a Tropical cyclone heat potential (TCHP) is a measurable metric calculated by the summation of ocean heat content from the surface down to the depth of the 26°C isotherm. TCHP calculated by the Meteorological Research Institute multivariate ocean variational estimation (MOVE) system is verified by using TCHP based on in situ observations by profiling floats during 2002-2012. After the verification, the threshold of MOVE-based TCHP before the passage of a tropical cyclone (TC) favorable for triggering TC deepening is determined by best-track central pressure drops for the nearest 6hours from 1985 to 2012. The threshold is specified as the minimum range of TCHP when the ratio of the number of records for TC deepening to the total best-track number of records in a TCHP bin is significantly greater than the reference ratio determined for each domain at a significance level of 0.05. The threshold is relatively low (40-60kJcm−2) around 5-10°N, west of 120°E and east of 140°E, whereas it is relatively high (80-100kJcm−2) around 15-20°N. Around 5-10°N, the ratio for each moving speed shows two peaks: with moving speeds of 3-5 and 7-9ms−1. The former case is exemplified by Typhoon Mike (1990) under relatively low TCHP (< 80kJcm−2), whereas the latter case is exemplified by Typhoon Haiyan (2013), which is more rapidly intensified and reaches a lower minimum central pressure under relatively high TCHP (>120kJcm−2). 
540 |a The Oceanographic Society of Japan and Springer Japan, 2015 
690 7 |a Tropical cyclone intensity forecast  |2 nationallicence 
690 7 |a Tropical cyclone deepening  |2 nationallicence 
690 7 |a Tropical cyclone heat potential  |2 nationallicence 
690 7 |a 26°C isothermal depth  |2 nationallicence 
690 7 |a Ocean data assimilation  |2 nationallicence 
690 7 |a Profiling float  |2 nationallicence 
773 0 |t Journal of Oceanography  |d Springer Japan  |g 71/4(2015-08-01), 373-387  |x 0916-8370  |q 71:4<373  |1 2015  |2 71  |o 10872 
856 4 0 |u https://doi.org/10.1007/s10872-015-0298-0  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s10872-015-0298-0  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 100  |E 1-  |a Wada  |D Akiyoshi  |u Meteorological Research Institute, 1-1 Nagamine, 305-0052, Tsukuba, Ibaraki, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Journal of Oceanography  |d Springer Japan  |g 71/4(2015-08-01), 373-387  |x 0916-8370  |q 71:4<373  |1 2015  |2 71  |o 10872