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French firefighters face 'pyrocumulonimbus' for first time

france24.com

191–200 of 394 posts

Re: French firefighters face 'pyrocumulonimbus' for first time

#191

Pedantic cloud enjoyer here, the article should name this a pyrocumulus not pyrocumulonimbus - the nimbus part means 'rain-bearing' in meteorology, fire clouds don't rain.

Cumulonimbus has been separated from its etymological roots. It now refers to the physics that can produce deep convection, high clouds, and the formation of an anvil shape (along with lightning, etc). The convection that produces a cumulonimbus rain cloud is present in a pyrocumulonimbus cloud. The word isn't wrong.

People need to learn what compound words are.

Re: French firefighters face 'pyrocumulonimbus' for first time

#192

Pedantic cloud enjoyer here, the article should name this a pyrocumulus not pyrocumulonimbus - the nimbus part means 'rain-bearing' in meteorology, fire clouds don't rain.

Apparently this cloud can create lightning and its own wind though

Re: French firefighters face 'pyrocumulonimbus' for first time

#193
post #171

Earlier quoted context omitted.

Regardless of your view on global warming, what's also vitally important is we don't do proper forest management anymore. We used to thin the trees and clear the underbrush, which drastically reduces flammability and the ability for forest fires to rapidly spread. But that's not seen as "environmentally friendly" these days.

Don't put this on the environmentalists when the simple explanation isn't short term cost effective to do this. If you need to put some big blanket blame, then blame capitalism. If nothing else because it has so far stopped all effective measure to stop the climate crisis.

> blame capitalism. If nothing else because it has so far stopped all effective measure to stop the climate crisis.

Growth-driven ecological harm isn’t unique to capitalism.

Re: French firefighters face 'pyrocumulonimbus' for first time

#194
post #69

So, if you used climate credits, to build up those forrests. Do they get nil and void, if those forrests burn up?

How would non-permanent credits even work? You purchase the carbon-offset option on a flight, a tree gets planted somewhere, ten years later it burns in a wildfire. Then what?

Then the area should have to be replanted without granting new credits. It's perfectly natural that trees die and are replaced by new ones in a forest. The unusual thing is just the entire forest dying at the same time.

Re: French firefighters face 'pyrocumulonimbus' for first time

#195

Earlier quoted context omitted.

Sounds like a good plan to me. Probably a dozen reasons why we cannot that I am unaware of, but from my arm chair it looks good.

The water was likely redirected for agricultural purposes and the farmers won't/can't surrender it on top of drought, if it's anything like the US. Would be real cool if we could make investments like this though.

In this case no, all the water is drained. I don't think meaningful amounts are retained for agriculture.

Re: French firefighters face 'pyrocumulonimbus' for first time

#196
Just an aside: I'm a researcher trying to classify forest disturbance types from satellite imagery.

The Landes Forest which is currently burning is really interesting in that you have all 4 of the major European disturbance types there: Human clear cuts, storm damage, large scale insect infestation and fire.

Most other forested areas in Europe only have two or three of these. For example most of the Mediterranean does not have meaningful amount of storm damage.

Just shows how badly suited the Landes Forest with its current forest management is in todays climate.

Re: French firefighters face 'pyrocumulonimbus' for first time

#197

For context on why this region is burning so easily: the Landes and Médoc are huge, artificial pine forests created in the 19th century under Napoleon III to drain and reclaim what was considered an inhospitable wetland, where shepherds famously walked around on stilts. Pine resin and needle litter makes it exceptionally flammable, and being an uninterrupted monoculture on flat land it lacks natural barriers to stop…

The main reason the forest is burning is global warming. There were 3 punishing heatwaves before the fire, it was just a matter of time. A part of the Fontainebleau forest, much more north, no pine trees, went in smoke earlier. Forests are burning near Madrid. It may make some people feel better to think that it is an isolated, local problem, but unfortunately global warming is the main culprit and we at least need t…

You’re both right.

However OPs post is more useful than yours.

By now, everyone knows about climate change. But I assume most didn’t know the fact about the pine trees in this area.

Nowadays it’s much more about how we deal with climate change and not so much about the fact that there is human made climate change.

Re: French firefighters face 'pyrocumulonimbus' for first time

#198

Earlier quoted context omitted.

> Not because pine trees, which have been around for a long time, and have never burned so badly. Are you sure? https://en.wikipedia.org/wiki/1949_Landes_forest_fire

I responded to this elsewhere on this thread: https://news.ycombinator.com/item?id=49065156 Basically they had no way to fight those fires at the time, as the article explains.

[Answering here to @applepearlime bc limits of my green acct]

They do have firebreaks, paths for trucks to go in many places [1]. I've seen many.

But you could argue they're not wide enough to actually break fire. And when I see videos of how tall and wide the flames are, I have no idea how wide they should be... It's a managed forest though, definitely looked after because economics interests (wood, tourism).

[1] https://cnes.fr/geoimage/aquitaine-littoral-landais-massif-f...

Re: French firefighters face 'pyrocumulonimbus' for first time

#199
post #71

67 comments. One mention of “climate crisis” (appropriate), 3 of “climate credits”. No one here is really discussing “climate change”. Is it denial, or just that we’ve accepted the obvious?

Hello from one of the accounts who mentioned "climate credits." Do you know why I mentioned it? Because I believe climate change is a real issue and the people selling a fake solution to make people feel better about their jet set lifestyle is doing a disservice to our ability to actually fix the issue. Thank you for your attention to this matter.

Re: French firefighters face 'pyrocumulonimbus' for first time

#200

Just an aside: I'm a researcher trying to classify forest disturbance types from satellite imagery. The Landes Forest which is currently burning is really interesting in that you have all 4 of the major European disturbance types there: Human clear cuts, storm damage, large scale insect infestation and fire. Most other forested areas in Europe only have two or three of these. For example most of the Mediterranean doe…

Interesting. Have you tried back testing your model agains fire data to analyze how well you could predict fire likelihood?
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