Hood was frosty

[Blaithin]

Do you know where the temperature is taken at is more my point.

If the weather station is two miles out of town in a field, does your point stand.

Yeah lots say airport. Calgary is the airport, that will be warmer. Red deer is the airport. Not the same scale as Calgary, still could be affected a bit. Three Hills is the airport. It’s 2 miles out of town in a field.

Just because the weather is listed for town doesn’t mean the station is in or anywhere near town. They’re just as likely to be out in a random field.

[dmlfarmer]

But you are right on how easy it can be to manipulate temperature data with your example as well

It would be manipulation if they continually moved weather stations but if they use the same station in the same location year after year for decades it will reflect if change is happening. Just because it disagrees with your micro climate temps is irrelevant. Likely would
get same rate of change if your station was used long term

[Sheepwheat]

It would be manipulation if they continually moved weather stations but if they use the same station in the same location year after year for decades it will reflect if change is happening. Just because it disagrees with your micro climate temps is irrelevant. Likely would
get same rate of change if your station was used long term

Removing hundreds of rural weather stations in the 90’s doesn’t help either. Ours was one of them.

[farming101]

It would be manipulation if they continually moved weather stations but if they use the same station in the same location year after year for decades it will reflect if change is happening. Just because it disagrees with your micro climate temps is irrelevant. Likely would
get same rate of change if your station was used long term

If a city grows up around the weather station over the decades it is no longer useful for tracking long term temperature changes

[furrowtickler]

It would be manipulation if they continually moved weather stations but if they use the same station in the same location year after year for decades it will reflect if change is happening. Just because it disagrees with your micro climate temps is irrelevant. Likely would
get same rate of change if your station was used long term

Micro climates are in city limits and airports that represent a tiny fraction of the land mass on any country .
Not sure why that’s not hard to understand, but then that would go against the current agreement on man made global warming
Two sides to every coin

[furrowtickler]

98% of the surrounding area was -4 to -5 yet the temp will be recorded as much higher in the micro climate of the city limits ... you have it assed backwards

[dmlfarmer]

98% of the surrounding area was -4 to -5 yet the temp will be recorded as much higher in the micro climate of the city limits ... you have it assed backwards

micro climates do not just happen within city limits. My farmyard always is 1-2 degrees colder than the neighbors on either side. I will have frost when neither do. Ever drive past a valley and see fog in it but nowhere else? You been to lakes, have you noted evening and morning freezes near a lakeshore do to the temperture difference between water and ground? Your own farm yard will likely differ from your fields, especially if there are shelterbelts, building etc. So what if it was warmer in the city if it is consistantly warmer in the city. The only backward one is the person who thinks microclimates are strictly an urban phenomena

[6V53]

Drive a quadrunner down a road on a calm eaving, probably 5 degree temperature change in a hundred yards.

[Sheepwheat]

In a field just doesn’t cut it for accuracy to me.

Worked black will be totally different than stubble. I’m not sure where would be best but to me ground level readings have way to many variables.

My guess would be that air temperatures would have to be monitored above ground at some level that has allowed the air to mix enough to be more stable. The higher atmospheric levels would be more accurate, no?

Temps are taken a precise distance off the ground. Grass covered ground is best. No trees within an equivalent of their height. At least these were environment Canada regulations when we had our station.

[AlbertaFarmer5]

Want to send a big thank you to all of the contributors to this great thread. What a relief it is to be back to arguing about the (relatively speaking) unifying topic of global warming and weather instead of covid, just like the good old days.
Anyone want to start a thread about bringing back the CWB or alternative energies now?