This page contains archived
weather station data from Cairn Gorm. You are free
to use it in any way you wish, but please reference
us as the source of any data you use, and send us a
copy of offprints of any publications if possible.
By doing this you will help to ensure the
continued viability of the weather station.
Weather Station Data
Archive Quality Control
AWS data is stored in monthly files as raw text. A
file called datayear also exists containing
all the data for the year in question. The columns
of data are as follows,
Julian Day No, Year, Time,
Mean Wind Speed, Max Gust, Min Wind Speed, Wind Dir,
Std. Deviation in Wind Dir, Temperature 1, and
The wind speed unit is metres
The data up to the end of 1995
have been processed by a quality control program,
which marks questionable data with a Q. Bad data are
removed and replaced with a warning token of the
form text R. However we can make no
guarantee that all errors have been found, and you
should bear this in mind when using the data .
The data format was changed
from 1996 onward and is the same as the
text form of weather information.
N.B. The wind speed unit here
is miles per hour.
The instruments are exposed
for 3 minutes every half hour, with the mean wind
speed being the 2.5 minute mean of readings made
every 2.5 seconds. The max gust and the min wind
speed are the highest and lowest readings over the
2.5 minute period. The unit of wind speed
measurement is meters per second up to 1995 and mph
for 1996 onwards. Wind direction is measured in
degrees, with the standard deviation in the wind
direction over the 2.5 minutes also being given.
Finally two temperature measurements are also made
in degrees Celsius.