The BBC news report that a temporary weather station has been installed on the summit of Ben Nevis this Autumn, this is 113 years after the original weather observatory which commenced observations in 1884 closed in 1904.
The AWS looks suspiciously like a Vaisala Weatherhawk (Vaisala WXT536) something I’ve always wanted to replace my aging Vantage Pro with, but something we simply can’t afford my wife says. It stands just a few metres from the summit cairn on what looks like a six metre mast with two huge solar panels bolted on it to provide the power. It looks like the whole thing is a publicity stunt funded by the NCAS and Leeds University to help get a permanent weather station for Britain’s highest mountain. I’ve hunted around on their site, but can’t find any of the data that its reporting. In all honesty it will be little different from the readings that we see from the SIESAWS stations on nearby Aonach Mor (1130* M) or Cairngorm (1237* M) to the east, but then again 108 metres does equates to being 354 feet higher I suppose.
Powering the AWS
The big problem is getting mains power up to the top of the Ben would be very difficult. Even if they dug up the entire tourist route and paved it at the same time, burying the mains cable under it as they did it. No one would want to put pylons up it and scar the whole mountain, the objection let alone the cost would be enormous. Solar power from solar cells might be the best answer, but the Ben is so often cloud covered, and in winter the amount of sunlight those panel would receive would be very small indeed. I shouldn’t think that the transmitter or the sensors would require that much power, but the heating of the anemometer to keep it free of riming would be enormous, and this would be required for at least 75% of the year at a guess. That’s probably why the weather station is being removed in December, I doubt that the temporary structure they have in place at the moment is up to seeing a winter out at 1345 M, the force of wind on those two solar panels must be enormous, and I suspect that if they didn’t take it down it would be blown down anyway.
I wrote an article earlier this week about the fact that there are two weather stations on Cairngorm, one owned and run by Heriot-Watt university and the other by the Met Office. Wouldn’t it be sensible if Heriot-Watt and NCAS collaborate with one another and move the existing one on Cairngorm (the one that pops up out of a protective can twice every hour) and relocate it to the old observatory ruins on top of Ben Nevis? Of course this doesn’t get round the crucial power problem, which short of installing some kind of small nuclear power cell might always be the problem. They must have power on Cairngorm to run both weather stations, but because it’s close by the ski slopes there is power to the Ptarmigan restaurant at the top of the funicular railway less than a kilometre away. It must have been a tough job but someone must have buried an armored power cable right to the rocky top of Cairngorm to provide power for those weather stations, and did a pretty good job of disguising it because I never saw any sign of them – that maybe the way to go on Ben Nevis?
- Bid to rescue Ben Nevis weather data
- Ben Nevis snow free for the first time in 11 years
- Recent Cairngorm observations