f you think the worst climate is past.... There is a theory that there are ocean currents that impact our climate. Two in particular, the Atlantic Multidecadal Oscillation (AMO) and the Pacific Decadal oscillation (PDO), and when they align (either warm or cold) that the climate will warm or cool. Currently they are both in their cool phase... There is a third ocean impact that may affect our climate, and that is the Arctic. In the Arctic there is an 'oscillation' that is wind driven, moving the ice and water around the Arctic either clockwise or counter-clockwise, and every few years it reverses. This is called the Beaufort Gyre. This Gyre has a large amount of very cold water/ice, and circles the pole. There is another theory that when this Gyre does not normally reverse, it will 'build up' ice and very cold water, and possibly flush all that out when it DOES finally have it's reversal. If this Gyre accumulates too much cold water/ice, then it may flush out into the North Atlantic, and affect the Gulf stream, which would seriously affect the Northern hemispheres climate. There is a theory that the Gyre may be the trigger for very cold climate changes, similar to the little ice age. If you take the decadal oscillations (PDO and AMO) in their cold phase, the extremely low solar phase into account, if the Gyre does flush all its cold water into the North Atlantic we may be having ice fairs on the Thames again! https://www.pri.org/stories/2018-01-06/scientists-are-keeping-close-eye-beaufort-gyre