(Table 2) Foehn characteristics of station in the McMurdo Dry Valleys, Antarctica ...

Foehn winds resulting from topographic modification of airflow in the lee of mountain barriers are frequently experienced in the McMurdo Dry Valleys (MDVs) of Antarctica. Strong foehn winds in the MDVs cause dramatic warming at onset and have significant effects on landscape forming processes; howev...

Full description

Bibliographic Details
Main Authors: Speirs, Johanna C, Steinhoff, Daniel F, McGowan, Hamish A, Bromwich, David H, Monaghan, Andrew J
Format: Dataset
Language:English
Published: PANGAEA 2010
Subjects:
Event label
Station label
DATE/TIME
Date/time end
Comment
Temperature, air, minimum
Temperature, air, maximum
Humidity, relative, minimum
Wind direction
Wind speed, gust
Unmanned weather station/meteorological observation
International Polar Year 2007-2008 IPY
Antarc*
Antarctic
Antarctica
International Polar Year
IPY
McMurdo Dry Valleys
Online Access:https://dx.doi.org/10.1594/pangaea.837426
https://doi.pangaea.de/10.1594/PANGAEA.837426
Description
Summary:Foehn winds resulting from topographic modification of airflow in the lee of mountain barriers are frequently experienced in the McMurdo Dry Valleys (MDVs) of Antarctica. Strong foehn winds in the MDVs cause dramatic warming at onset and have significant effects on landscape forming processes; however, no detailed scientific investigation of foehn in the MDVs has been conducted. As a result, they are often misinterpreted as adiabatically warmed katabatic winds draining from the polar plateau. Herein observations from surface weather stations and numerical model output from the Antarctic Mesoscale Prediction System (AMPS) during foehn events in the MDVs are presented. Results show that foehn winds in the MDVs are caused by topographic modification of south-southwesterly airflow, which is channeled into the valleys from higher levels. Modeling of a winter foehn event identifies mountain wave activity similar to that associated with midlatitude foehn winds. These events are found to be caused by strong pressure ... : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...

Similar Items