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When our climate is “the most important moral challenge” why is it there is so little interest in our longest and oldest data? Anyone who would like to see this series of books and others like them online should write to the National Library and ask. This due to the combined effect of the shadow and the thermal momentum of wood. This picture from 1930 shows another Stevenson screen away from the shadow and to the east of the thermometer house.
Who knew that one of the most meticulous and detailed temperature records in the world from the 1800′s comes from Adelaide, largely thanks to Sir Charles Todd. Source: National Library of Australia — article/29002009 The modern Adelaide screen at Kent Town may have the opposite problem.
“The temperature of the soil is also ascertained by mercurial thermometers, whose bulbs are respectively 8, 5, and 3 feet beneath the surface.” Click on the page to read it. The problem is that the thermometer house was tall and in the morning would cast a cooling shadow near the Stevenson screen.
Even the temperature at various depths under the ground was recorded but the most basic of these fantastic old records does not show on the BOM raw temperature data record here before 1887.
With careful adjustment the Adelaide record could be one of the longest in the world. If these old records showed Adelaide was way in the 1860′s, do we suppose an eager Ph D student would not have jumped at the chance to splice historic old and new records into a long alarming graph and a popular thesis? I fear the cult of the young means the smarts of the oldest of old-timers is automatically discounted, yet those old codgers from the 1800′s weren’t necessarily old at the time, and were connected to the harsh realities of the natural world in way that soft cushy net-connected university grads could not imagine today. Todd organised the real time collection of the data by telegraph and began the preparation of synoptic maps.
Below, notice how commonly those red spikes go about 40C? By the 1870s, and throughout the 1880s and 1890s, the meteorological data from the telegraph stations saw an increasing use of synoptic charts of pressure, wind, temperature and rainfall for daily weather forecasting.” “Todd soon became responsible for setting up and supervising a network of meteorological stations.
Here thanks to Chris Gillham is the chart you get from the BOM West Terrace data in Adelaide. (What a shame the West Terrace data stops in 1979).
According to his plan of 1856 his observation stations were connected by telegraph and were able to report their findings daily to the Adelaide Observatory.”…..”He was also the first to make the connection between droughts in Australia and India due to a phenomenon known today as El Nino.
The BOM usually shows graphs like this one below starting in 1911. “The month has been very mild, the mean temperature at the Observatory (59.8) showing an increase of 2.1.
Something was being thrown and bouncing off its tin roof, like something throwing our black walnuts.
It was a sound that I would recognize because we have these types of trees around our home, but not near the building in question.
Before the night in question my wife noticed the odor several days before. The smell was also present during the daylight hours as well.
Also, my mom had come over to our home (she lives approximately 1000 yards to the west of my home) and she heard a sound that she could not identify. Also, between and 10 PM my son and wife heard what they thought to be a gun shot.
The West Terrace site in Adelaide was one of the best in the world at the time, and provides accurate historic temperatures from “Australia’s first permanent weather bureau at Adelaide in 1856″. The sloped windows on the front of the BOM building may be warming the area via reflection from the sun.