you want to discuss water vapour? sure thing.... we are having the most humid how weather in NSW. usually much drier than this. hence we've had a lot more rain than usual throughout January, normally a dry month.
water vapour, and it took me some time to get my head around this, is the consequence of warmer oceanic temperatures. more heat in the water = more evaporation = more rain along the coast and, if winds are blowing SE, further inland. plus the Indian Ocean Dipole (IOD) has been pushing more humid air from the north into the southern inland desert regions causing a lot of rain.
if you can't see how the climate is changing you would have to be hiding from the weather reports.
water vapour increases heat retention in the atmosphere. this adds to the warming of the oceans as heated water vapour is absorbed easily into water.
increasing ocean temperatures increases the rate of melting of Antarctic ice shelves and sheets. we have entered the first of a series or tipping points (from last year) and will soon see the ice sheets lowering into the southern ocean and melting. we might then see the AMOC stall - now that would be a disaster in the making.
