Is average global temperature warming or cooling?

Temperature Evidence

1. Dr. Friedrich Karl Ewert, retired geologist & data computation expert, examined all NASA GISS’s temperature data series, from 1153 stations, going back to 1881. On comparing raw data to NASA’s revisions he found earth has been cooling since 1940, not warming.
2. The GHCN climate stations show there is no statistically significant warming – or cooling. GHCN = Global Historical Climatology Network.
3. The UAH statellite record shows 0.3C warming in the last 40 years. But the climate also showed considerable cooling from 1940s to mid-1970s and the satellite readings only date from 1978.

Uncorrected NASA GISS data should show warming because beginning with the climate scare (1988) vast numbers of climate surface stations were shut. Many of them rural. The stations left open are mostly urban which should be subject to the Urban Heat Island UHI effect, which has increased over time. So uncorrected data should show warming purely on the basis of this massive station shutdown with the warmest stations surviving. If no warming was found (as is the case since the early 1940s) I conclude the climate must be cooling.