Birdnow's Aviary

August 31, 2023

Another Climate Forcing

Timothy Birdnow

There are so many things that affect the climate that are not taken into consideration in the current models.

There is gravitational pumping, undersea volcanism, micrometeor bombardment, magnetic effects, cosmic rays, etc.

Here is yet another.

Southern Alaska acts as a source of climate-important dust - NCAS
ncas.ac.uk

FTA:

Large-scale dust storms in Southern Alaska have a bigger than expected impact on the global climate system, by sending tonnes of fine vegetation-rich silt into the atmosphere.

The giant dust storms, which can last for many days, could be having more influence on the earth’s climate than previously thought – suggests new research from the University of Leeds and the National Centre for Atmospheric Science (NCAS).

Dust particles in the atmosphere are important agents in ice formation. Without dust, water in clouds can remain in liquid form even though temperatures may be well below freezing.

Dust composed of fine sediment and silt – microscopic fragments of rock, minerals and vegetation – can encourage the formation of ice crystals in clouds.

Whether ice formation in clouds will contribute to global warming or help cool the planet depends on how much ice they contain, how many ice nucleating particles are present and the nature of those particles.

Only a small fraction of the dust particles in the atmosphere has the capacity to nucleate ice and we are only just starting to understand their sources and global distribution. Whether a cloud becomes more or less reflective of sunlight depends on how much ice is in them, so we need to be able to understand and quantify the various sources of ice-nucleating particles around the globe. At present, climate models tend not to represent these high-latitude sources of dust, but our work indicates that we need to.

This is becoming a matter of how many angels can dance on the head of a pin. Yet they continue to cling to a theory that has never explained current climate much less is capable of predicting a hundred years out.

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