This is not very scientific, but it is a bit - defrosting the fridge where i am staying (had to coz couldn't get tbe freezer door open) - there is a tipping point with ice melting - starts out slow - but then it really picks up steam. Then i added a 'major climate change event' in the form of a saucepan full of boiling water - whole ice shelves started collapsing causing flooding in the kitchen