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Originally Posted by lio45
FYI, airport to airport isn't apples to apples.
Apples to apples would be downtown to downtown, for example.
For apples to apples with the weather at Mirabel airport, you should take the Van weather in Squamish, since it's about the same distance from downtown.
But of course it would make no sense to do so, if we can simply get weather data for the city itself... right?
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Do people even read an original post anymore, if you look closer you will see that i referenced the data from BOTH airports in Montreal:
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[/Also apples to apples (airport to airport) the warmest average low for Toronto is July with 15.8, for Montreal the warmest overnight average low is 14 in July at Mirabel and 16.1 in July for Pierre.
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Sometimes I feel people will ignore most of a post and cherry pick one little thing simply to start an argument.
And sorry, apples to apples in climatology is airport to airport.
These is explained in in climatology 101 (i know this because i took climatology courses until my third year of university for fun).
Here are some (but not all) of the reasons:
Airports are very similar to one and other, so they offer the best control sites around the world (this is very standard in many scientific fields to have control environments for comparing data).
Airports are flat, so they all have the same aspect (many sites in cities are on slopes, so north / south facing will change your observations).
Airport fields are largely free from heat islands. In urban settings temperatures can swing greatly from one spot to another (beside a park to the heart of an intersection for example).
Airports are free of trees / buildings (shade) which may lower observed daytime highs and rise observed night time lows, not to mention distort precipitation data.
ETC...
Also, as in this case, not every city has an urban weather station, and many urban weather stations that do exist do not meet international weather station standards.
Why is this so hard for so many people to understand? This does not mean that otehr weather stations don't count. They do, and they do give us great windows into more urban living environments or other climatic locations away from airports, but, when doing direct city to city comparisons, airports are the standard.