THE IMPACTS OF INTERACTION OF A TYPHOON WITH THE MIDLATITUDE TROUGH ON ITS TRACK AFTER THE RECURVATURE

Three typhoon cases are selected to conduct a series of simulations that are initialized from sequential analyses. The results show that the forecast error in crucial area where a tropical cyclone（TC） interactes with the upstream trough is highly correlated to the track forecast error after the TC r...

Full description

Saved in:
Bibliographic Details
Published inJournal of Tropical Meteorology Vol. 23; no. 2; pp. 202 - 209
Main Author 王凯 陈华 王金梅
Format Journal Article
LanguageEnglish
Published Guangzhou Guangzhou Institute of Tropical & Marine Meteorology 01.06.2017
Subjects
Cyclones
Error detection
Experiments
Hurricanes
Sensitivity
Tracking
Tropical climate
Tropical cyclones
Typhoons
Upstream
Online AccessGet full text
ISSN1006-8775
DOI10.16555/j.1006-8775.2017.02.008

Cover

More Information
Summary:Three typhoon cases are selected to conduct a series of simulations that are initialized from sequential analyses. The results show that the forecast error in crucial area where a tropical cyclone（TC） interactes with the upstream trough is highly correlated to the track forecast error after the TC recurvature. Furthermore, sensitivity experiments confirm that the developments of the midlatitude downstream circulations and then the TC track after its recurvature are highly sensitive to the TC intensity and its location relative to the upstream trough, which can give an example or one way of sensitivity of the TC track to the TC-trough interaction. If the TC interacts with the upstream trough more strongly（e.g., the TC being intensified or getting closer to the upstream trough）, the downstream circulations will be more meridional, thus the TC track will be more northerly and westerly; otherwise, the downstream circulations will be more zonal, and the TC track will be more southerly and easterly.
Bibliography:Three typhoon cases are selected to conduct a series of simulations that are initialized from sequential analyses. The results show that the forecast error in crucial area where a tropical cyclone（TC） interactes with the upstream trough is highly correlated to the track forecast error after the TC recurvature. Furthermore, sensitivity experiments confirm that the developments of the midlatitude downstream circulations and then the TC track after its recurvature are highly sensitive to the TC intensity and its location relative to the upstream trough, which can give an example or one way of sensitivity of the TC track to the TC-trough interaction. If the TC interacts with the upstream trough more strongly（e.g., the TC being intensified or getting closer to the upstream trough）, the downstream circulations will be more meridional, thus the TC track will be more northerly and westerly; otherwise, the downstream circulations will be more zonal, and the TC track will be more southerly and easterly.
44-1409/P
tropical cyclone typhoon track typhoon recurvature midlatitude downstream circulations upstream trough PV gradient
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:1006-8775
DOI:10.16555/j.1006-8775.2017.02.008