Llansadwrn (Anglesey) Weather
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I have been recording the state of the grass at Llansadwrn since 1996 and found it to be an informative addition to my observations. The grass code is a good discipline to adopt as it affords a means of accurately recording, in the weather diary, the types of water deposition observed. The code is simple to use and carried out over several years can form a valuable record at any weather station 2.
The grass code is not a substitute for the state of the ground code (Table 2) as different information is recorded. For example the ground may be frozen, or more than 50% covered with snow. I have added also a concrete surface (a road surface or some other surface would also be interesting) and suggest a modified code which I use (Table 3). Some interesting differences can occur throughout the year, and often within a day, due to contrasting thermal regimes.
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Updated: 22 July 1999
Last updated 23 April 2014
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