01 January 1970 0 6K Report

I wonder about the feedbacks of the smoke from wildfires. Currently, a consensus is emerging, that smoke from wildfires warms the upper atmosphere but cools the surface.

But if wildfires heat up the upper troposphere and lower stratosphere (depending on the size and intensity of wildfires) this should result in high-pressure systems that produce higher surface temperature, as the descending air becomes warmer than without the effect of wildfire smoke.

In this regard, smoke from wildfires could intensify the underlying causes that led to their expansion in the first place being high-pressure systems and marine heatwaves (they support the drying of continents and they can intensify continental high-pressure systems) caused often by high-pressure systems.

Just wonder if this could be really the case...

If there is some sense in the above I wonder to what extent a single heatwave could be reinforced by the smoke of wildfires. For example, you have an extreme smoke plume from for example from burning rainforest that comes down in a high-pressure system - could it be a feedback that could reinforce a heat wave in the worst case by several degrees or wouldn't that be impossible?

This would interest me, as it is the most intense extremes that can lead to a sudden collapse of a whole system.

Another example could be the high-pressure system over Greenland (Greenland blocking high) that is increasingly occurring. Could wildfires in the pan-Arctic substantially increase the intensity of this high-pressure system?

All the best

Jan

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