Originally Posted by
le Pingouin
But you aren't seeing the data as measured by the instrument. You're seeing it as the instrument spits it out - filtered, calibrated and processed. That's hardly pristine.
Complete with measurement errors and dropouts. Not to mention changes in sites, time of observation changes, UHI and errors in record keeping.
The satellite measurements are much worse. They don't measure any temperatures but have to infer it.