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Re: Winter 2017-18
Originally Posted by Moses2013
(Post 12431491)
How to measure snowfall is always a difficult subject. Naturally an airport will also have less snow if you have to keep a runway clear and I doubt they actually really make an effort to measure the area with most lying snow. Measuring rain is obviously a lot easier as you can use a rain gauge.
I think snow depth is measured with sticks placed in the ground but snow accumulation is done with gauges similar to a rain gauge. In most places the actual snow on the ground would be hard pressed at any one time to more than 30% of annual snowfall. eg. Ottawa today the maximum snow on the ground was 75 cm and our average snowfall is 235 cm I think. |
Re: Winter 2017-18
Originally Posted by Moses2013
(Post 12431491)
How to measure snowfall is always a difficult subject. Naturally an airport will also have less snow if you have to keep a runway clear and I doubt they actually really make an effort to measure the area with most lying snow. Measuring rain is obviously a lot easier as you can use a rain gauge.
At staffed stations, the snow amount or the depth of accumulated snow-on-ground is measured using a snow ruler or a ruler calibrated to centimetres. The measurements are made at several points which appear representative of the immediate area, and then averaged. Snow is normally measured in "centimetres"." So they'll measure it at an airport in a place where they are not continually plowing it away.:rofl: In my area, elevation is key to snowfall. So what the airport reports will be different to downtown & out where I live. Hell, I get more snow than my M-i-L who lives on the same street 2km away and 100m lower! |
Re: Winter 2017-18
Originally Posted by Atlantic Xpat
(Post 12431517)
You think they send a guy out on the runway with a ruler? Whether it's an airport or not, snowfall is measured in the same way. From EC: "At Environment Canada, snow is measured by automated observing stations which register the snowfall and snow-on-ground amounts, using an acoustic snow sensor (SR-50). The automated sites report snowfall amounts hourly in centimetres.
At staffed stations, the snow amount or the depth of accumulated snow-on-ground is measured using a snow ruler or a ruler calibrated to centimetres. The measurements are made at several points which appear representative of the immediate area, and then averaged. Snow is normally measured in "centimetres"." So they'll measure it at an airport in a place where they are not continually plowing it away.:rofl: In my area, elevation is key to snowfall. So what the airport reports will be different to downtown & out where I live. Hell, I get more snow than my M-i-L who lives on the same street 2km away and 100m lower! At Environment Canada, snow is measured by automated observing stations which register the snowfall and snow-on-ground amounts, using an acoustic snow sensor (SR-50). The automated sites report snowfall amounts hourly in centimetres. At staffed stations, the snow amount or the depth of accumulated snow-on-ground is measured using a snow ruler or a ruler calibrated to centimetres. The measurements are made at several points which appear representative of the immediate area, and then averaged. Snow is normally measured in "centimetres". Also note that snowfall amounts are not measured at a number of Environment Canada and partner’s stations as the automated equipment is not capable of this measurement. So the questions is if it's staffed or not and even actually officially measured. |
Re: Winter 2017-18
Originally Posted by Moses2013
(Post 12431551)
Exactly, it's not reliable:
At Environment Canada, snow is measured by automated observing stations which register the snowfall and snow-on-ground amounts, using an acoustic snow sensor (SR-50). The automated sites report snowfall amounts hourly in centimetres. At staffed stations, the snow amount or the depth of accumulated snow-on-ground is measured using a snow ruler or a ruler calibrated to centimetres. The measurements are made at several points which appear representative of the immediate area, and then averaged. Snow is normally measured in "centimetres". Also note that snowfall amounts are not measured at a number of Environment Canada and partner’s stations as the automated equipment is not capable of this measurement. So the questions is if it's staffed or not and even actually officially measured. |
Re: Winter 2017-18
Originally Posted by Atlantic Xpat
(Post 12431507)
Where are you getting that from? I did look on Env Canada but couldn't obviously find that data.
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Re: Winter 2017-18
And in Vancouver the airport tends to be warmer, get less snow, and less rain vs the other areas, and of course the airport isn't in Vancouver, but Richmond.
Originally Posted by Partially discharged
(Post 12431513)
Here in this area most 'official' weather stations are at airports. Gatineau airport is often much colder earlier on a clear winter morning than Ottawa airport and it is due to soils, proximity to the river and nearby woods.
I think snow depth is measured with sticks placed in the ground but snow accumulation is done with gauges similar to a rain gauge. In most places the actual snow on the ground would be hard pressed at any one time to more than 30% of annual snowfall. eg. Ottawa today the maximum snow on the ground was 75 cm and our average snowfall is 235 cm I think. |
Re: Winter 2017-18
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Re: Winter 2017-18
Originally Posted by Danny B
(Post 12434012)
Holy shit!! -42c in Northern Ontario
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Re: Winter 2017-18
There once was a boy from Quebec
Who was buried in snow to his neck When asked "Are you friz?" He replied "Yes, I is, But we don't call this cold in Quebec." |
Re: Winter 2017-18
Originally Posted by Souvy
(Post 12430435)
We rent a snow shelter for our driveway. The guys come and put it up and then come back a few months later to take it away.
This time, the guys were putting mine up and watching our neighbour try to put his own up. He was struggling. They took pity, strolled across the road and had his up in about ten minutes. |
Re: Winter 2017-18
OMFG how will they survive
Snow has blanketed parts of Britain as forecasters predict an icy blast will send temperatures plummeting to -4 degrees Celcius overnight. This comes as The Met Office warned that sub-zero temperatures next week could bring major travel disruptions to Scotland, Northern Ireland and parts of the south. In the coming days forecasters are saying a prolonged cold spell is imminent. Those in the north and south should expect to see the coldest temperatures so far this winter. I wish our weather was plummeting to minus 4C then Id be out in a t shirt and light jacket :lol: For the record it currently minus 27C but feels like minus 40C but we are expecting it to be sunny today. Oh and there is the Extreme Cold warning In Effect which basically means don't try licking any lampposts or metal poles today. |
Re: Winter 2017-18
It's good to hustle out there and plug the van in at 4 in the morning, invigorating, gets the blood going.
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Re: Winter 2017-18
Originally Posted by caretaker
(Post 12434529)
It's good to hustle out there and plug the van in at 4 in the morning, invigorating, gets the blood going.
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Re: Winter 2017-18
Originally Posted by Former Lancastrian
(Post 12434533)
Plus if you have a dog you are killing 2 birds with one stone so to speak. Plus don't wear mitts/gloves and then crawl back into bed and share the experience with the wife/husband/partner or drunken unknown person in your bed;)
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Re: Winter 2017-18
Originally Posted by Former Lancastrian
(Post 12434533)
Plus if you have a dog you are killing 2 birds with one stone so to speak. Plus don't wear mitts/gloves and then crawl back into bed and share the experience with the wife/husband/partner or drunken unknown person in your bed;)
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