Amotherby AWS is a Davis Vantage Pro electronic weather station located in the village of Amotherby, near Malton, North Yorkshire.54°9'N, 0°51'E 35m ASL.
(Map)
Up until April 2014, the weather station was located at Scotton, near Knaresborough
(Map).
Current and past weather data are automatically published on the internet 15 minutes.
The Current data page lists data for the lastest reading, daily highs and low daily lows for various parameters.
Note the "daily" is taken from midnight (00:00).
Hopefully temperature, humidity, dewpoint, windchill, wind and barometer are obvious. Some of the other terms may require an explantion as to the recording methods
and thus interpretation.
Solar Radiation
Rainfall
Graphs
Simply put, this is how bright the sun is. Technically, its a measurement of the incident solar energy recieved on a horizontal surface.
A bright sunny day will show a smooth curve from zero near dawn, to a peak at solar noon, decreasing to zero at dusk. The magnitude of the peak will
vary with the time of year, from a theoretical maximum of about 300W/m2 on December 21st, to 1180W/m2 on June 21st. It is however a rare day to approach these maximums, even "blue sky" days often have a degree of thin, high cirrus cloud reducing the sun's energy.
A dull, heavily overcast day may bumble along at less than 50W/m2, while a patchy cloud day will have the graph up and down like a yo-yo.
Rainfall is recorded by a "tipping bucket" raingauge, which measures 0.01" (0.254mm) of rain for each tip.
"Todays" rainfall is since midnight, "Storm" rainfall continues counting until there has been 24 hours without any rain, then it resets to zero.
"Rain Rate" is the current rainfall rate, in mm per hour, with the daily high also recorded.
Graphs shown cover the last week (left side) and last 24 hours (right side) for the most interesting weather parameters, temperature, barometric pressure, solar radiation, rainfall, wind speed and wind direction.
The keen weather observer is able to note, for example, signifcant changes in temperture, pressure trends, rainfall, and wind direction with the passing of frontal systems.
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