Hello,
An error has recently been discovered with reporting of wind direction
from Relay Station AWS site in East Antarctica. Both real-time data and
archive data have been affected (since 1 August 2001 - data before this
date is correct). Real-time data on the AMRC Web, FTP and ADDE servers
was changed to have the correction after 14:30 UTC 24 September 2003
(data before this will still be incorrect). The archive of AWS data on
the AMRC/AWS FTP sites will be correct as soon as the data can be
processed with the wind direction correction applied to it.
For users interested in the correction method if you have older
incorrect data, the formula is:
Correct Wind direction = 360 - dir
Where dir is the older incorrect wind direction.
Announcements will be made when the Relay Station AWS arhive data is
corrected and posted to the FTP sites.
Regards,
Matthew
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Matthew Lazzara -Meteorologist- Antarctic Meteorological Research Center
947 Atmospheric, Oceanic and Space Sciences http://amrc.ssec.wisc.edu
Space Science and Engineering Center E-mail: mattl@xxxxxxxxxxxxx
University of Wisconsin-Madison Phone: (608) 262-0436
1225 West Dayton Street, Madison, WI 53706 Fax: (608) 263-6738
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