Are you skeptical or gullible?  Consider your official gage, probably your airport's thermometer.  Are there more nearby runways, jet and auxiliary engines, roads and heated or cooled buildings, and automobiles since its installation?  Has the road been widened, getting closer to the gage?  Is there more soot on the snow and ice?  How can CO2 rise while temperatures do not?  On this site we will present both some answers and more questions.