The phrase
"than climatology" is a comparison used to indicate that something is more complex or difficult than another subject.
Full definition
This is a decrease from the average rate of ice loss for June 2010 of -85,210 square kilometers per day, and is
slower than climatology (average of -84,050 square kilometers per day for 1979 - 2000).
LONDON, 11 April, 2017 — Permafrost, the layer of permanently frozen ground that lies just beneath the Earth's surface in the polar regions, has been found to be more sensitive to the effects of global
warming than climatology had recognised.
An important change is the emergence of a category of summertime extremely hot outliers, more than three standard deviations... warmer
than climatology.
Now summertime extremely hot outliers, more than three standard deviations (σ) warmer
than climatology, typically cover about 10 % of the land area.
Global mean temperature, as shown in Figure 1a, was 0.57 °C (1.0 °F) warmer
than climatology (the 1951 - 1980 base period).