Quote:
Originally Posted by bgilbert
. You're right Greg, Penrith was extremely hot but, it has only been keeping records since about 1995. Sydney's oldest recording station is Observatory Hill and has been recording since 1860, it only reached 35.9 on the same day that Penrith reached 48.9, its hottest jan. day on record is 45.8 deg. 2013, its hottest feb. day 42.1 deg in 1926. The capital cities are getting hotter, and country centres are showing a slight mean temp. increase and a slight max temp. decrease. Walgett's hottest day on record was 49.2 deg. 1903. all this data is from BOM archives.
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Historic temperatures, like a lot of of historic record keeping also needs to viewed in the context of how they were obtained. Methodology for temperature recording 100 years ago were not always as standardised as they are in latter days. It's been proven that a lot (note: a lot, not all) were recorded in direct sunlight or on thermometers hung in buildings that trapped heat. This is where people get on their high horse about historical data being adjusted and fuel the argument that it's all a hoax...
The geologic temperature record doesn't lie or present/support a particular agenda. It just is...