Above the Hunga Tonga-Hunga Ha’apai undersea eruption
On January 15th, Hunga Tonga launched a magma-powered thunderstorm that sent atmospheric shockwaves around the world. Ash, salt and particulates were carried through rising columns, right through the stratosphere, into the mesosphere and all the way up to 58 kilometers above Earth. …
The dust from Hunga-Tonga travelled West and reached Australia on Jan 18 – 20th. On Jan 21-22 flooding rain washed out the main railway line and roads in central Australia. Over the next few weeks, rains soaked the ground across parts of Queensland and New South Wales. By February 15th, the remnant volcanic dust that had circled the Earth and was back again, creating rich red sunsets over Australia. A week or so after that, the rain bombs fell on South East Queensland, and travelled south through New South Wales to Sydney.
The big unknown is that the Hunga-Tonga volcano launched water vapor, salt and dust incredibly high — almost too high. The aerosols are far above the troposphere, where rainfall originates and some of that floating ash was still too high even as it returned on the second lap of the Earth at 25km above sea level. On the other hand, some particles will fall out faster than others, others will be highly charged and possibly novel entities created in the monster lightning storm above the volcano, and some ash and particles will have been released at lower heights.
Dust creates clouds and rain, because it gives water vapor somewhere to start turning into water and forming raindrops. This is how cloud seeding works. This volcano chucked a lot of dust very high, so that it took a month or so to fall back down into the troposphere (the part of the atmosphere up to about 12 km where the water vapor is — the stratosphere is above the troposphere and is almost always dry).
Jennifer Marohasy … describes how rainfall has been linked to past eruptions in scientific papers: after “El Chichon [a large Mexican volcano] spewed 20 million tonnes of aerosols into the stratosphere in 1982, Hong Kong recorded very high rainfalls as the dust arrived across the Pacific”. …
Hunga Tonga lies 20 degrees south of the equator at roughly the same latitude as Townsville in Queensland. So the densest band of aerosols circling the Earth westwards from the eruption would track right over Queensland.
Sulphur dioxide emissions of Hunga Tonga-Hunga Haapai on Jan 18.
Naturally the media blames our carbon dioxide emissions. Ten years ago they claimed global warming meant never ending droughts for Australia, and our dams would never fill again. Now it means shocking floods! Who believes those politically-motivated fools?
The downpour in central South Australia was so unusual it washed out the sole Trans-Australia “Indian Pacific” railway line running across the nation from East to West.
The line normally delivers 80% of Western Australia’s retail supplies on freight trains that are nearly 2km long. The line took weeks to be restored and the shelves here in Perth are still running empty in somewhat random patterns. …
Across Australia the rain for the whole month of January was generally heavier than usual.
The strongest rainfall ever recorded over three days in Australia is also in Queensland, in 1893, three weeks after a big volcanic eruption in Chile. Coincidence?
And global warming? Here’s the latest satellite data for Australia. Notice the coolness of the last year.
Global cooling stated in 2016.