This is the Friends of History Debating Society. I'm John Batchel to New South Wales.

Jeremy Zackis reporting on positive southern annular mode. Sounds good. This is springtime in Australia.

It is a continent. I'm always reminded as the weather has different faces across this vastness, just as it does in the continent of

North America. However, I'm learning. Jeremy, a good day to you. What is a positive

southern annular mode? Is that a good thing? Good day. Good day. Gide, John. Yes, in short,

the southern annular mode, a positive one of that, is a very good thing in summer.

And I'll tell you why, because the southern annular mode in summer actually creates wet weather systems that push moisture onto the Australian continent and cause a decent amount of rain just before our summer period hits.

And by causing that decent amount of rain, before our summer period hits. And by causing that decent

amount of rain, it actually slows the start of summer. It cools down the temperatures. It actually

means that the really hot dry winds that we get from the north aren't quite here yet. And it gives us

a little bit of reprieve before we start the hot, hot summer. And what the actual mechanism is, John,

which is the most interesting part is, is that the southern annular mode, when it's in the positive

sense in summer, is actually a series of low pressure systems to the south of Australia,

so between Australia and Antarctica, that actually causes the very cool, dry air from from Antarctica to stay south. But what it also

does is it naturally cools the air and temperature just in the southern part of Australia,

allowing the moisture to come in from the tropics, basically mix in with the air and create these

really wet weather systems. So it kind of gives a balancing act to a really, really dry and hot

continent and a really, really cold Antarctica, just enough to give us that little bit of water that we

need. So, John, this is a good thing for now, but of course, as with everything in Australia,

good things can turn bad because while we've had a lot of rain right now, we're about to get a lot

of growth. So a lot of bushlands about to be growing and a lot of grasslands about to be growing just before we probably get a very hot catastrophic summer that's probably going to have a lot of, lot of bushfires right now.

So, John, I'm taking the rain while we can, but honestly, the southern annielloid, a double-edged sword.

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