Analysis of strong wind events around Adelie Land, East Antarctica
Main Article Content
Abstract
Strong wind events at Dumont d'Urville (DdU), an East Antarctic coastal station, and Dome C, an interior station,
were studied to determine if the wind along the Adelie Land coast increases with the approach of the depression
from the west of the site or after its passage to the east of it. The events for the year 1993 were studied using
synoptic observations, mean sea level pressure charts and composite infrared satellite images. It was found that the
winds are enhanced with the approach of a depression from the west towards the DdU coast. The wind increases in
response to the decreasing pressure at the coastal site and increasing downslope pressure difference (dp). The wind
starts decreasing once the system moves to the east of DdU and the pressure at DdU starts building up, as reported
in some earlier studies. The response of wind to the approaching depression is not the same for all the events but
depends on the downslope pressure difference and the movement of the depression that is often conditioned by
the presence of a blocking high to the northeast. The wind comes down if the system starts penetrating inland
due to the presence of the high pressure ridge to the northeast and decreasing dp. It is observed that the winds at
Dome C increase to as high as 17 m s-1 with the inland penetration of the depression.
were studied to determine if the wind along the Adelie Land coast increases with the approach of the depression
from the west of the site or after its passage to the east of it. The events for the year 1993 were studied using
synoptic observations, mean sea level pressure charts and composite infrared satellite images. It was found that the
winds are enhanced with the approach of a depression from the west towards the DdU coast. The wind increases in
response to the decreasing pressure at the coastal site and increasing downslope pressure difference (dp). The wind
starts decreasing once the system moves to the east of DdU and the pressure at DdU starts building up, as reported
in some earlier studies. The response of wind to the approaching depression is not the same for all the events but
depends on the downslope pressure difference and the movement of the depression that is often conditioned by
the presence of a blocking high to the northeast. The wind comes down if the system starts penetrating inland
due to the presence of the high pressure ridge to the northeast and decreasing dp. It is observed that the winds at
Dome C increase to as high as 17 m s-1 with the inland penetration of the depression.
Article Details
How to Cite
Naithani, J., Argentini, S., Schayes, G. and Mastrantonio, G. (2003) “Analysis of strong wind events around Adelie Land, East Antarctica”, Annals of Geophysics, 46(2). doi: 10.4401/ag-3411.
Issue
Section
OLD
Open-Access License
No Permission Required
Istituto Nazionale di Geofisica e Vulcanologia applies the Creative Commons Attribution License (CCAL) to all works we publish.
Under the CCAL, authors retain ownership of the copyright for their article, but authors allow anyone to download, reuse, reprint, modify, distribute, so long as the original authors and source are cited. No permission is required from the authors or the publishers.
In most cases, appropriate attribution can be provided by simply citing the original article.
If the item you plan to reuse is not part of a published article (e.g., a featured issue image), then please indicate the originator of the work, and the volume, issue, and date of the journal in which the item appeared. For any reuse or redistribution of a work, you must also make clear the license terms under which the work was published.
This broad license was developed to facilitate open access to, and free use of, original works of all types. Applying this standard license to your own work will ensure your right to make your work freely and openly available. For queries about the license, please contact ann.geophys@ingv.it.