As every one not living under a rock will know the UK has been hit by quite a lot of snow in the last week. Here at Redwood we still have 8 to 10 inches laying on the ground, now frozen as we have not see a temperature above freezing for a few days.
I’ve been watching the weather station sensors of my WS2350 out on the roof outside my office windows and its stood remarkably well to its second winter in the snow. The wind speed anemometer has not frozen and has continued to provide good readings, The temperature, pressure and humidity have provided readings as accurate as they are ever going to be and well with in the margin of error when cross checked with other local weather stations. In fact only the rain sensor lets the side down a little by having no way to distinguish between snow melt and rain fall, hardly the sensors fault I know, but it does raise the question of how one avoids measuring snow melt in the rain fall stats. Its also bound to suffer from frozen water on the tipper which when it melts will add to rain fall stats too, less of a snow issue, more a freezing temperature issue.
I was also thinking about how to deal with recording snow fall, both depth and rate. Obviously there is no sensor to record this automatically (that I am aware of) so one would need to take manual readings and record these. The excellent Cumulus software (www.sandaysoft.com) I use as my data logger and web site feeder has provision for a weather diary in which snow conditions can be recored but it does not seem like the standard Cumulus site presents this diary. Of course snow fall is one thing, sunshine is another and lightning strike, both of which can be measured by the amateur using available sensors and software. Snow, it would seem, is not so easy to measure with automation.
There was an excellent series of weather programs on the BBC Four earlier this year, The Weather (www.bbc.co.uk), in four parts. One of which covered snow in some detail. I was hoping there may be a repeat showing but I cant find them.
The excellent #uksnow twitter tag mashup by Ben Marsh (uksnow.benmarsh.co.uk) has been incredibly popular again, showing a simple picture of snowfall across the UK based on a tweet comprising your postcode then a 1 to 10 scale of snowfall. But it only records snow fall not depth (in fact it only records what you tell it so its very subjective). I think there are definitely a few changes that would take it forward and make it even more popular.
The Weather Underground (www.wunderground.com) has a fantastic mashup map, based on personal weather station feeds, such as the one here at Redwood, but again, snow is obvious by omission only.
I’m sure in places where snow fall is greater that recording and publishing methods are much further advanced than they are for the typical personal weather station, but I am curious what else I can do. Its likely that these winter conditions are indicative of future winters and that snow fall will be a useful addition to the recording going on here at Redwood.
You can follow the weather here at Redwood on the web site (weather.60redwood.com) and on twitter @RedwoodWeather
There is more snow expected this weekend
Finally, here a few pictures from my office window out over the frozen garden Redwood lake