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It seems like our agenda boy doesn't know than Vancouver isn't in "central Canada"
You're starting to get on my nerves. I'm saying that Vancouver is affected by the cold that builds up in central Canada, just like Comodoro Rivadavia is affected by the cold that builds up in the Patagonian plateau.
You don't need large barriers to have very different figures for two nearby locations. When it's that cold in Patagonia, it's usually a thin low-lying layer of very cold air contrasting with much warmer (still cold) air at higher altitude. If you have a steep coastal area the odds are that there is a constant mix up within the air column and the temperatures will be moderate in the lower points.
Interesting. What causes this thermal inversion in Patagonia? I would have expected that the air would be colder higher up and gradually warmer near the surface but still quite cold.
Interesting. What causes this thermal inversion in Patagonia? I would have expected that the air would be colder higher up and gradually warmer near the surface but still quite cold.
Loss of heat on the surface during calm nights. It's eventually accompanied by frozen fog that stays during the day, or the sunlight is just too weak to break up the inversion.
It happens all over the world.
Karasjok, Norway, has an all time low of -51.5°C. Nearby coastal Vardo has -28.9°C, and Tromso only -18.4°C. All time low of Switzerland occurred in La Brevine, -42.5°C at 1000 m. Saentis, at a mountain top over 2000 m, reached only -32.0°C, etc.
Location: João Pessoa,Brazil(The easternmost point of Americas)
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Quote:
Originally Posted by Mhc1985
Loss of heat on the surface during calm nights. It's eventually accompanied by frozen fog that stays during the day, or the sunlight is just too weak to break up the inversion.
It happens all over the world.
Karasjok, Norway, has an all time low of -51.5°C. Nearby coastal Vardo has -28.9°C, and Tromso only -18.4°C. All time low of Switzerland occurred in La Brevine, -42.5°C at 1000 m. Saentis, at a mountain top over 2000 m, reached only -32.0°C, etc.
You said everything I trought about the cold in Patagonia, also, snow cover have an important implication too.
Loss of heat on the surface during calm nights. It's eventually accompanied by frozen fog that stays during the day, or the sunlight is just too weak to break up the inversion.
It happens all over the world.
Karasjok, Norway, has an all time low of -51.5°C. Nearby coastal Vardo has -28.9°C, and Tromso only -18.4°C. All time low of Switzerland occurred in La Brevine, -42.5°C at 1000 m. Saentis, at a mountain top over 2000 m, reached only -32.0°C, etc.
Makes sense. It seems like the cold generated in Patagonia like in several other places around the world as you pointed out is caused by radiational cooling with clear skies rather than cold fronts that sweep through. This is quite different from much of North America where record low temps are caused by arctic fronts that sweep through from the north that bring very low windchills. Those record low Patagonian temps probably have very little wind I am guessing?
Cool, dry spell in Java. Soekarno-Hatta recorded a low of 20.2C this morning. Almost 3C/5F below average low, noticeable given the standard deviation : https://www.ogimet.com/cgi-bin/gsynr...day=07&hora=09
Current dewpoint (3:30pm) : 19C
Cool, dry spell in Java. Soekarno-Hatta recorded a low of 20.2C this morning. Almost 3C/5F below average low, noticeable given the standard deviation : https://www.ogimet.com/cgi-bin/gsynr...day=07&hora=09
Current dewpoint (3:30pm) : 19C
Tangerang doesn't have climate data so I looked at the Jakarta weatherbox for the July values. I couldn't help noticing that the average low is closer to the record low than to the daily mean. That doesn't make sense to me
Some good 24 hour rain totals for the hills, with totals around 230mm in areas - the mountain tops got rain for much of it, but there's heavy new snow above 1000 metres this morning.
At 10:13
6C and sunny, with a forecast high of 13C. 68mm in the rain gauge this morning.
Off to Hokitika in the morning, will hopefully get some snow photos.
Last edited by Joe90; 07-09-2018 at 04:24 PM..
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