It’s long been known by people who follow climate science that the Met Office underestimates global temperature rise. Why? Because it’s Hadley/CRU (Climatic Research Unit) Temperature dataset (HadCRUT) undersamples the Arctic, and the Arctic is where the most warming is occurring.
“Now the Met[eorological] Office (part of the Defence Ministry) has corrected their errors and update their temperature record (release here, video below),” Joe Romm of Climate Progress reports. “No longer is 1998 the hottest year on record. It has been (slightly) edged out by 2010 and 2005.”
“Between 1998 and 2010, temperatures rose by 0.11C, 0.04C more than previously estimated,” the Telegraph reports.
“The new data set also shifts around the hottest years on record, so that the new temperature series, known as HadCRUT4, is more in line with other global records held by NASA and NOAA in the US. The American series had already added Arctic temperatures from extrapolated information…. The main conclusions of the new temperature series remains the same – thatoverall warming since 1850 has been around 0.75C and the 10 warmest years on record all occurred in the last 14 years.”
Surprised? I’m not.