TITLE

Objective Indicators of the Life Cycle Evolution of Extratropical Transition for Atlantic Tropical Cyclones

AUTHOR(S)
Evans, Jenni L.; Hart, Robert E.
PUB. DATE
May 2003
SOURCE
Monthly Weather Review;May2003, Vol. 131 Issue 5, p909
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Forty-six percent of Atlantic tropical storms undergo a process of extratropical transition (ET) in which the storm evolves from a tropical cyclone to a baroclinic system. In this paper, the structural evolution of a base set of 61 Atlantic tropical cyclones that underwent extratropical transition between 1979 and 1993 is examined. Objective indicators for the onset and completion of transition are empirically determined using National Hurricane Center (NHC) best-track data, ECMWF 1.125° × 1.125° reanalyses, and operational NCEP Aviation Model (AVN) and U.S. Navy Operational Global Atmospheric Prediction System (NOGAPS) numerical analyses. An independent set of storms from 1998 to 2001 are used to provide a preliminary evaluation of the proposed onset and completion diagnostics. Extratropical transition onset is declared when the storm becomes consistently asymmetric, as measured by the 900-600-hPa thickness asymmetry centered on the storm track. Completion of the ET process is identified using a measure of the thermal wind over the same layer. These diagnostics are consistent with the definitions of tropical and baroclinic cyclones and are readily calculable using operational analyses. Comparisons of these objective measures of ET timing with more detailed three-dimensional analyses and NHC classifications show good agreement.
ACCESSION #
9510353

 

Related Articles

  • THE INTERNATIONAL BEST TRACK ARCHIVE FOR CLIMATE STEWARDSHIP (IBTrACS). Knapp, Kenneth R.; Kruk, Michael C.; Levinson, David H.; Diamond, Howard J.; Neumann, Charles J. // Bulletin of the American Meteorological Society;Mar2010, Vol. 91 Issue 3, p363 

    The article focuses on the International Best Track Archive for Climate Stewardship (IBTraCS), a tropical cyclone data consisting of storm position and intensity estimates with an interval of six hours. It cites the sources for IBTraCS including Hong Kong Observatory (HKO), Meteorological...

  • Assessing coastal island vulnerability in the Sundarban Biosphere Reserve, India, using geospatial technology. Sahana, Mehebub; Hong, Haoyuan; Ahmed, Raihan; Patel, Priyank Pravin; Bhakat, Priya; Sajjad, Haroon // Environmental Earth Sciences;May2019, Vol. 78 Issue 10, pN.PAG 

    Rising sea levels and the increasing intensity of storm surges and tropical cyclones due to climate change and the resulting dynamic shifts in shoreline positions have dramatically increased the exposure risk and vulnerability of local communities inhabiting the ecologically sensitive deltaic...

  • Simulation of the Recent Multidecadal Increase of Atlantic Hurricane Activity Using an 18-km-Grid Regional Model. Knuston, Thomas R.; Sirutis, Joseph J.; Garner, Stepen T.; Held, Isaac M.; Tuleya, Robert E. // Bulletin of the American Meteorological Society;Oct2007, Vol. 88 Issue 10, p1549 

    The article focuses on the simulation of the increase of hurricane activity using an 18-km-grid regional model in the U.S. Atlantic Coast. The 18-km-grid regional model demonstrates the significant skill in simulating hurricane-related statistics. The model provides the reliable large-scale...

  • The Great Louisiana Hurricane of August 1812. Mock, Cary J.; Chenoweth, Michael; Altamirano, Isabel; Rodgers, Matthew D.; García-Herrera, Ricardo // Bulletin of the American Meteorological Society;Dec2010, Vol. 91 Issue 12, p1653 

    Major hurricanes are prominent meteorological hazards of the U.S. Atlantic and Gulf coasts. However, the official modern record of Atlantic basin tropical cyclones starts at 1851, and it does not provide a comprehensive measure of the frequency and magnitude of major hurricanes. Vast amounts of...

  • Near-future tropical cyclone predictions in the western North Pacific: fewer tropical storms but more typhoons. Choi, Woosuk; Ho, Chang-Hoi; Kim, Jinwon; Chan, Johnny C. L. // Climate Dynamics;Aug2019, Vol. 53 Issue 3/4, p1341 

    This study presents forecasts of near-future tropical cyclone (TC) activities over the western North Pacific (WNP) using a TC track-pattern-based prediction model in conjunction with long-term free-run simulations from the National Centers for Environmental Prediction Climate Forecast System....

  • TROPICAL CYCLONE DESTRUCTIVE POTENTIAL BY INTEGRATED KINETIC ENERGY. Powell, Mark D.; Reinhold, Timothy A. // Bulletin of the American Meteorological Society;Apr2007, Vol. 88 Issue 4, p513 

    Tropical cyclone damage potential, as currently defined by the Saffir-Simpson scale and the maximum sustained surface wind speed in the storm, fails to consider the area impact of winds likely to force surge and waves or cause particular levels of damage. Integrated kinetic energy represents a...

  • Sobi Slingsby.  // Architecture Australia;Jul/Aug2019, Vol. 108 Issue 4, p24 

    No abstract available.

  • Book reviews. Krishnamurti, T.N. // Bulletin of the American Meteorological Society;Oct96, Vol. 77 Issue 10, p2334 

    Reviews the book `Global Perspectives on Tropical Cyclones,' edited by Russel L. Elsberry.

  • An Improved Statistical Scheme for the Prediction of Tropical Cyclones Making Landfall in South China. Zung-Ching Goh, Andy; Chan, Johnny C. L. // Weather & Forecasting;Apr2010, Vol. 25 Issue 2, p587 

    This study describes an improved statistical scheme for predicting the annual number of tropical cyclones (TCs) making landfall along the coast of south China using data from 1965 to 2005. Based on the factors affecting TC behavior inside the South China Sea (SCS), those responsible for TCs...

  • NEW DISCOVERY IN FORECASTING TROPICAL CYCLONES.  // Bulletin of the American Meteorological Society;Mar2009, Vol. 90 Issue 3, p289 

    The article reports on the new breakthrough in forecasting tropical cyclones in the U.S. A new computer model has accurately reproduced actual cyclones that originated in the Indian Ocean in 2006 and 2007. The new computer, called Nonhydrostatic Icosahedral Atmospheric Model (NICAM), has been...

Share

Read the Article

Courtesy of NEW JERSEY STATE LIBRARY

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics