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Tuesday 7th of January 2020, 7:15pm

Smoke blanketed Melbourne CBD on 06/01.

Questions:

• Where has it come from? Which winds brought it here?

• Where is it going?

• Where does it end up? What happens to the smoke?

Smoke is a byproduct of combustion, usually made up of solids, liquids and gasses. The solids (mostly carbon) will be deposited as dust eventually. The liquids (usually mostly water droplets) will condense and adhere to surfaces. The gasses will either condense when cooled or will mix with the atmosphere, smog is a good example.

Smog (smokey fog)

• Where will the dust fall?

Smoke travelled to Melbourne by south-easterly winds from fires in Victoria's north-east and East Gippsland, and in part from Tasmania.

The smoke carried suspended particles which are harmful when inhaled.

In New Zealand, the Tasman glacier along the central coast have been covered in dust from smoke, from the fires in NSW, carried by a jet-stream wind. The smoke “continued another thousand miles thereafter through the South Pacific, traveling more than 2,000 miles total before dissipating.”

https://www.washingtonpost.com/weather/2020/01/02/ash-covered-glaciers-toxic-amber-skies-australia-bushfire-smoke-spills-over-new-zealand/


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