I finally tracked down on the internet what purport to be the 1991-2020 LTALTA Long Term Average. This is usually defined as a 30 year period by the WMO. for the airport at Svalbard, and produced these charts of temperatures and anomalies for the period 27 October 2024 to the 15 February 2025. As you can see the results are quite startling, with mean maximum anomalies for the whole period a massive +7.8°C above average, with only four of the one hundred and twelve days with maximum temperatures below the LTA. It’s not until you examine station data such as this, that you realise just how rapidly the Arctic is warming at present.