The Muller Berkeley temperature study makes it convincingly definite that the world has warmed due to industrial GHG emissions, though the temperature increase has stalled since 2006. A trend needs a minimum of ten years, so the decadal graph shows steady temperature increase.
It has warmed since 1850 and warmed rapidly since 1960. The EU graph shows this and blocks show only decadal increase,
Climate centers show the global average temperature rate of annual increase has stalled at 2006.
In contrast the Arctic region temperature has been increasing faster than anywhere, now up to four times the global average with Siberia warming fastest of all.
We need to know zonal and regional warming because of sensitive regions. These are snow packs for water and natural irrigation, agriculture. Also carbon feedback regions of wetland peat and Arctic permafrost, and the Arctic for snow and summer sea ice albedo.
These sensitive regions are vulnerable in the spring and summer so we need seasonal temperatures.
The interactive temperature maps from NASA provides all this temperature information best.