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https://theconversation.com/global-temperature-rises-in-steps-heres-why-we-can-expect-a-steep-climb-this-year-and-next-209385>
"Global warming took off in the mid-1970s when the rise in global mean surface
temperature exceeded natural variability. Every decade after the 1960s has been
warmer than the one before and the 2010s were the warmest on record. But there
can be a lot of variability from one year to the next.
Now, in 2023, all kinds of records are being broken. The highest daily
temperatures ever recorded globally occurred in early July, alongside the
largest sea surface temperature anomaly ever.
June had its highest global mean surface temperature, according to preliminary
analysis. The extent of Antarctica’s sea ice has been at a record low.
Meanwhile, atmospheric carbon dioxide concentrations continue to increase at
rates that show no sign of slowing.
Evident consequences include torrential downpours in some parts of the world
which contrast with excessive heatwaves and wildfires in other locations,
notably recently in Canada.
But global mean surface temperature does not continue relentlessly upwards. The
biggest increases, and warmest years, tend to happen in the latter stages of an
El Niño event.
Human-induced climate change is relentless and largely predictable. But at any
time, and especially locally, it can be masked by weather events and natural
variability on interannual (El Niño) or decadal time scales.
The combination of decadal variability and the warming trend from rising
greenhouse gas emissions makes the temperature record look more like a rising
staircase, rather than a steady climb."
Cheers,
*** Xanni ***
--
mailto:xanni@xanadu.net Andrew Pam
http://xanadu.com.au/ Chief Scientist, Xanadu
https://glasswings.com.au/ Partner, Glass Wings
https://sericyb.com.au/ Manager, Serious Cybernetics
