In Canada the number of stations dropped from 600 to 35 in 2009. The percentage of stations in the lower elevations (below 300 feet) tripled and those at higher elevations above 3000 feet were reduced in half. Canada’s semi-permanent depicted warmth comes from interpolating from more southerly locations to fill northerly vacant grid boxes, even as a pure average of the available stations shows a COOLING. Just 1 thermometer remains for everything north of latitude 65N – that station is Eureka. Eureka according to Wikipedia has been described as “The Garden Spot of the Arctic” due to the flora and fauna abundant around the Eureka area, more so than anywhere else in the High Arctic. Winters are frigid but summers are slightly warmer than at other places in the Canadian Arctic.
China had 100 stations in 1950, over 400 in 1960 then only 35 by 1990. Temperatures reflected these station distribution changes. CRU’s own Phil Jones showed in 2008 peer review paper that contamination by urbanization in China was 1.8F per century. Neither NOAA nor CRU adjusts for this contamination. NASA to their credit, makes an attempt to adjust for urbanization, but outside the United States, the lack of updated population data has NASA adjusting cities with data from other cities with about as many stations warming as cooling.
High elevation stations have disappeared from the data base. Stations in the Andes and Bolivia have vanished. Temperatures for these areas are now determined by interpolation from stations hundreds of miles away on the coast or in the Amazon.