Anthropogenic Global Warming ... how hot is it ?
- Thread starter sear
- Start date
But you do realize that colder winter storms are due to global warming?
The idea is that if the earth did not rotate, then hot air would rise at the equator and fall at the poles.
But since the earth is rotating, the air can't make it all the way in time.
So there instead are 6 convection zone, with 3 in the north and 3 in the south.
And what happened due to global warming, is that weather now has more energy.
So now arctic air is able to reach further south than normal.
So it is the extra energy of global warming that allows arctic storms to reach much further south than they normally would.
Shiftless2
Well-known member
Absolutely - that's why I posted it here.
Stretched polar vortex, moisture and a lack of sea ice all to blame for dangerous winter blast, meteorologists say
Meteorologists said the eastern two-thirds of the nation is threatened with a winter storm that could rival the damage of a major hurricane and has some origins in an Arctic that is warming from climate change.
www.pbs.org
And
Stratospheric Warming Alert: A Massive Shift in the Polar Vortex is Forecast for early February
A disrupted Polar Vortex is driving U.S. and Canada cold, with an early February Stratospheric Warming now forecast, that could impact the weather patterns deep into February and even into early Spring
www.severe-weather.eu
And this
How Climate Change May Be Affecting the Polar Vortex : Newsroom
sebsnjaesnews.rutgers.edu
Shiftless2
Well-known member
The unexpected danger from ‘ember storms’ during severe wildfires
Understanding the erratic behaviour of wind and embers at fire fronts could save lives.
www.nature.com
Understanding the erratic behaviour of wind and embers at fire fronts could save lives.
The unexpected danger from ‘ember storms’ during severe wildfires
Understanding the erratic behaviour of wind and embers at fire fronts could save lives.
www.nature.com
The unexpected danger from ‘ember storms’ during severe wildfires
Understanding the erratic behaviour of wind and embers at fire fronts could save lives.
The unexpected danger from ‘ember storms’ during severe wildfires
Understanding the erratic behaviour of wind and embers at fire fronts could save lives.
Yes, I read the same thing in many other articles.
It seems that if you have a metal roof, put ember filter screens on your attic vents, and remove any brush up against the house, that houses can't catch on fire.
Shiftless2
Well-known member
I think you're being overly optimistic - if everything around you is on fire things are going to be hot enough that you may find stuff starting to burn anyways,
Depends on the zoning.
With reasonable zoning regulations so that houses are over 100' apart, I do not see how that could cause it to just from one house to another?
Heat rises, even in 50 mph winds.
And Hardiplank is great.
{...
HardiePlank cladding achieves a fire rating of A2 s1-d0, indicating that it is noncombustible and will not ignite when exposed to direct flame. This rating means it does not contribute fuel to a fire, unlike combustible siding materials that can escalate fire hazards.
...}
Shiftless2
Well-known member
Many moons ago I lived in the middle of the Rocky Mountains and we were regularly inundated with PSA's (television, radio, newspapers) about the dangers of indoor Franklin stoves - seems one of the things that people were doing when they installed installed those thing in wooden cabuns was cladding the wall immediately behind it with tin - the idea was that meant that no sparks could actually light the wall. Only thing is, that metal would get hot enough to light the wood behind on fire.
And listening to those announcements provided an amazing amount of information. One of the logging companies had a yard nearby where they dumped all of the "scraps" they had no use for. Lots of limbs that were 6" or so in diameter but too short to be of any use to the company. And they were quite happy to have people come in and remove it - saved them the trouble of disposing of all that scrap wood and provided much of the community with free firewood. Just take it home - cut it to manageable lengths, strip the bark off of it, and split it - only thing is, too many people weren't stripping the bark off of pine logs - after all, they burned and burned hot. But the resin produced enough soot to clog chimneys very quickly - chimney fires are not a laughing matter.
And apple wood was another problem - it burns when it's still wet but after a week a six inch flue is probably reduced to half an inch (just quoting the fire department on that).
And listening to those announcements provided an amazing amount of information. One of the logging companies had a yard nearby where they dumped all of the "scraps" they had no use for. Lots of limbs that were 6" or so in diameter but too short to be of any use to the company. And they were quite happy to have people come in and remove it - saved them the trouble of disposing of all that scrap wood and provided much of the community with free firewood. Just take it home - cut it to manageable lengths, strip the bark off of it, and split it - only thing is, too many people weren't stripping the bark off of pine logs - after all, they burned and burned hot. But the resin produced enough soot to clog chimneys very quickly - chimney fires are not a laughing matter.
And apple wood was another problem - it burns when it's still wet but after a week a six inch flue is probably reduced to half an inch (just quoting the fire department on that).
I have also lived in lots of rural cabins with wood stoves.
I never strip the bark off or worry about things like apple wood.
I just have a large cylindrical wire brush on a chain I run through once a year, and never had any problem.
I also find that 4" flue pipe will prevent soot build up more than an 8" one will.
Please pardon me if my #530 is a stretch.
Kingsford is a brand that makes charcoal briquettes, along with related products, used for grilling. Established in 1920 by Henry Ford, the brand is now owned by The Clorox Company. Currently, the Kingsford Products Company remains the leading manufacturer of charcoal in the United States, with 80% market share. More than 1 million tons of wood scraps are converted into charcoal briquettes annually. More from Wikipedia
What did Henry Ford have to do with grilling?
Some Ford automobiles had exterior wood paneling, and as a result, Henry Ford ended up with wood scrap he didn't want to throw away. ... thus Kingsford.
Because of velocity?
Burning the same quality of fuel, with the same creosote content in the same volume would require the smoke to exit the same length of stack quicker.
If the surface area of the flue is less than half then the smoke would have less opportunity to heat it. So I suspect the 4" might not collect soot as fast, but may not warm the building as well, more BTUs exhausted to the atmosphere.
volume of a cylinder: pi R squared H
iirc
So double the bore of the chimney, increase chimney volume by 4.
I imagine smoke velocity is inversely proportional (four times faster in the narrower chimney).
Please pardon me if my #530 is a stretch.
Kingsford is a brand that makes charcoal briquettes, along with related products, used for grilling. Established in 1920 by Henry Ford, the brand is now owned by The Clorox Company. Currently, the Kingsford Products Company remains the leading manufacturer of charcoal in the United States, with 80% market share. More than 1 million tons of wood scraps are converted into charcoal briquettes annually. More from Wikipedia
What did Henry Ford have to do with grilling?
Some Ford automobiles had exterior wood paneling, and as a result, Henry Ford ended up with wood scrap he didn't want to throw away. ... thus Kingsford.
Because of velocity?
Burning the same quality of fuel, with the same creosote content in the same volume would require the smoke to exit the same length of stack quicker.
If the surface area of the flue is less than half then the smoke would have less opportunity to heat it. So I suspect the 4" might not collect soot as fast, but may not warm the building as well, more BTUs exhausted to the atmosphere.
volume of a cylinder: pi R squared H
iirc
So double the bore of the chimney, increase chimney volume by 4.
I imagine smoke velocity is inversely proportional (four times faster in the narrower chimney).
That is true, but what they tell me is that slowing the velocity of the stack is what allows the smoke to cool and condense out the creosote crystals that block the flue eventually.
The faster the exhaust velocity, the more it retains its heat and vaporized elements.
I tend to favor tiny stoves these days, even though its more work to reduce the wood.
This one is pretty cool.
Whether running the steel brush through the chimney is more of a burden, subjective.
Wood pellet stoves have been available for years, but if the prominence of wood-stove pellet fuel is an indication their popularity has peaked, and is in decline around here.
I've seen glass chimneys on oil lamps. When broken, easily replaced. Not sure what happens when the glass chimney on the YouTube contraption in #531 shatters. Burn the house down?
The place to burn wood is outdoors.
Under that inverted caldron / stockpot is a whole chicken, propped upright. Can't vary the intensity of the wood flame, so the grill is raised & lowered from above.
Shiftless2
Well-known member
It's called "global" warming, not "Albuquerque" warming.
Reportedly what's increasing is the global mean temperature. That doesn't mean cold snaps and heat waves have been cancelled.
I haven't checked, but I gather when the dome of polar cold slips this far South on one side of the planet, warmer air from the opposite side of the planet is drawn North to fill the void.
Weather and climate are not synonyms.
And that slippage of polar air further south means it is being replaced by warmer air than is normal for the poles.
{...
The polar regions, particularly the Arctic, are experiencing significant temperature increases due to climate change. Recent studies indicate that the Arctic is warming nearly four times faster than the global average, with some reports suggesting this rate could be even higher. For instance, temperatures at the North Pole have soared over 20°C above average, reaching levels beyond the melting point of ice, which raises serious concerns about the accelerating pace of climate change and its effects on polar ice and global weather patterns.
...}
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