A favorite claim of climate alarmists is that they adjust older temperatures upwards.
Explainer: How data adjustments affect global temperature records | Carbon Brief
This certainly isn’t true for global land temperatures.
Newer versions of land temperatures keep getting adjusted further to cool the past.
There is little high quality temperature data outside the US.
A Critical Review of Global Surface Temperature Data Products by Ross McKitrick :: SSRN
The US data is massively adjusted to increase warming.
And the ocean data (like the land data) is largely fake.
di2.nu/foia/foia2011/mail/2729.txt
Climate science is a farce. Junk science built on top of junk data.