<
https://theconversation.com/the-heat-is-on-what-we-know-about-why-ocean-temperatures-keep-smashing-records-226115>
"Over the last year, our oceans have been hotter than any time ever recorded.
Our instrumental record covers the last 150 years. But based on proxy
observations, we can say our oceans are now hotter than well before the rise of
human civilisation, very likely for at least 100,000 years.
This isn’t wholly unexpected. Ocean temperatures have been steadily rising due
to human-caused global warming, which in turn means record hottest years have
become increasingly common. The last time ocean temperature records were broken
was 2016 and before that it was 2015. The last year we experienced a record
cold year was way back at the start of the 20th century.
But what is remarkable about the past year is the huge ongoing spike in global
ocean temperature which began in April last year. Last year was hotter than the
previous record year by a whopping 0.25°C. In contrast the margins of other
previous record years were all less than 0.1°C.
Why? Global warming is the main reason. But it doesn’t explain why the heat
spike has been so large. Climate drivers such as El Niño likely play a role, as
do the random alignment of certain weather events and possibly the reduction in
sulfur emissions from shipping. Researchers around the world are trying to
understand what’s going on."
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
