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bio website topjaklont.org
location Toronto, Canada
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visits member for 2 years, 5 months
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I'm a Post-Doctoral Fellow in atmospheric remote sensing at the University of Toronto in Toronto, Ontario, Canada. I first came to Stack Exchange for practical reasons: Tex.SE has been of major help when I wrote my licentiate (midterm) thesis. Since then, I have discovered the joy of many websites. As my network profile will show, I'm interested in travel, outdoor, scientific skepticism, and as I work in academia, also in academia and LaTeX.


Apr
21
comment Effect of CO2 on the environment, besides greenhouse effect and ocean acidification
This is a good question for the new Earth Science stack exchange, that should hopefully reach public beta soon.
Apr
4
comment If I drop a leaf twice from the height of a tree in a completely controlled environment, will the trajectory in each case be the same?
This question is really about chaos theory, not about quantum mechanics. A leaf falling is not about quantum mechanics.
Feb
12
comment Being in a solid state, why is ice slippery?
It's not slippery if it gets cold enough.
Feb
12
comment Being in a solid state, why is ice slippery?
@jwenting True. There are many other models that my observation would support. The water ice in the outer solar system is hard as rock...
Feb
12
comment Being in a solid state, why is ice slippery?
From personal experience, ice is not (very) slippery at -40°C, but worst near 0°C. That supports the water layer idea.
Feb
9
comment How far we can see in the thickest possible fog?
The densest fog I've seen probably had visibility of some 10 meter, but in whiteouts people can get lost in their garden.
Feb
9
comment How far we can see in the thickest possible fog?
Does a whiteout (snow) count? And you're mentioning water fog, but ice fog can be much denser.
Jan
29
comment Why does ice form on bridges even if the temperature is above freezing?
@AJMansfield But that's not the bridge having a conductive heat sink, that's the bridge lacking a conductive heat source. In other words, the road is heated from below, but the bridge isn't. But the bridge does not lose heat through conduction (it is, to a first order, only in contact with air, and air is a bad heat conductor).
Jan
29
comment Why does ice form on bridges even if the temperature is above freezing?
Heat loss via conduction won't cause bridges to cool down faster than the surrounding land. I think the radiative effect is dominant.
Jan
29
comment How can I estimate confidence intervals around the forecasted temperatures for future days?
I'm not sure, I'm not really an expert. The models are prety well-tested so I think that $var(X)$ would be small enough if we had near-perfect knowledge of the initial state. However, if there is an incorrect initialisation of the models — perhaps a satellite picture being miscalibrated or so — that would cause a systematic error to go into each run. As I said, I'm not really an expert so I can't say how often that is the case, but I have heard more expert colleagues refer to wrong initialisation what ordinary people would call the weather forecast was totally wrong.
Jan
28
revised How can I estimate confidence intervals around the forecasted temperatures for future days?
expand
Jan
28
answered How can I estimate confidence intervals around the forecasted temperatures for future days?
Dec
16
comment climate change influence diel air temperature variation
@Kate Ok then, I hope with you to get an answer from a true expert
Dec
16
comment climate change influence diel air temperature variation
There are. Search for diurnal cycle climate change on your favourite academic search engine.
Nov
23
awarded  Yearling
Nov
9
awarded  Tumbleweed
Nov
5
answered Does the moon affect the Earth's climate?
Nov
2
asked Is GNSS-based positioning trilateration or multilateration, and why?
Oct
31
comment Cloud Microphysics - Does It contain Ice Or Water Or Both?
@PranavHosangadi There are no water clouds in the region where that occurs.
Oct
30
answered Cloud Microphysics - Does It contain Ice Or Water Or Both?