Combining the OAS temperatures and OAA temperatures and using the century - scale trends for each identified in the paper -LRB--0.03 K / century and +0.78 K / century, respectively), it may be concluded that instrumental temperature stations located in non-urban areas and not subjected to
artificial urban heating bias produce an overall warming trend of just 0.375 K / century (0.038 K / decade) during 1900 - 2010.
A global - scale instrumental temperature record that has not been contaminated by (a)
artificial urban heat (asphalt, machines, industrial waste
heat, etc.), (b) ocean - air affected
biases (detailed herein), or (c)
artificial adjustments to past data that uniformly serve to cool the past and warm the present... is now available.