English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
  Climatology of Polar Lows over the Sea of Japan Using the JRA-55 Reanalysis

Yanase, W., Niino, H., Watanabe, S., Hodges, K., Zahn, M., Spengler, T., et al. (2016). Climatology of Polar Lows over the Sea of Japan Using the JRA-55 Reanalysis. Journal of Climate, 29, 419-437. doi:10.1175/JCLI-D-15-0291.1.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Yanase, W., Author
Niino, H., Author
Watanabe, S., Author
Hodges, K., Author
Zahn, Matthias1, 2, Author           
Spengler, T., Author
Gurvich, I. A., Author
Affiliations:
1The CliSAP Cluster of Excellence, External Organizations, ou_1832285              
2B 4 - Regional Storms and their Marine Impacts, Research Area B: Climate Manifestations and Impacts, The CliSAP Cluster of Excellence, External Organizations, ou_1863484              

Content

show
hide
Free keywords: Atm/Ocean Structure/ Phenomena; Polar lows
 Abstract: Polar lows are intense meso-α-scale cyclones that develop over the oceans poleward of the main baroclinic zone. A number of previous studies have reported polar low formation over the Sea of Japan within the East Asian winter monsoon. To understand the climatology of polar lows over the Sea of Japan, a tracking algorithm for polar lows is applied to the recent JRA-55 reanalysis. The polar low tracking is applied to 36 cold seasons (October–March) from October 1979 to March 2015. The polar lows over the Sea of Japan reach their maximum intensity on the southeastern side of the midline between the Japanese islands and the Asian continent. Consistent with previous case studies, composite analysis demonstrates that the polar low development is associated with the enhanced northerly flow on the western side of a synoptic-scale extratropical cyclone, with the cold trough in the midtroposphere and with increased heat fluxes from the sea surface. Furthermore, the present climatological study has revealed two dominant directions of motion of the polar lows: southward and eastward. Southward-moving polar lows are steered by a strong northerly flow in the lower troposphere, which is enhanced on the western side of synoptic-scale extratropical cyclones, while the eastward-moving polar lows occur within a planetary-scale westerly flow in the midlatitudes. Thus, the direction of polar low motion reflects the difference in planetary- and synoptic-scale conditions.

Details

show
hide
Language(s): eng - English
 Dates: 2016-01
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1175/JCLI-D-15-0291.1
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Climate
  Other : J. Clim.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Boston, MA : American Meteorological Society
Pages: - Volume / Issue: 29 Sequence Number: - Start / End Page: 419 - 437 Identifier: ISSN: 0894-8755
CoNE: https://pure.mpg.de/cone/journals/resource/954925559525