australian temperature records 100 years

The temperature data that comprise Australia’s long-term climate record are known as ACORN-SAT (Australian Climate Observations Reference Network – Surface Air Temperature).

For example, while considerable effort is made to keep observational practices consistent, changes in observing methods or technology over time may create artificial jumps in the temperature data. Temperatures in recent decades are on average warmer than last century.
They are not global—for example high elevations and polar regions require interpolation or extrapolation. In reality, the raw data describe ‘as-read’ temperature readings from single stationsacross multiple sites, for varying timespans, and using multiple instruments over time. This link provides a table of all stations for New South Wales by location and the latest observations information. Techniques involved in developing the Australian Climate Observations Reference Network – Surface Air temperature (ACORN-SAT) dataset.

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One of the aims of temperature data analysis is to ensure that records can be consistently compared from one time period to another. To account for these issues, a separate check was carried out on the homogeneity of time series of the

The standardisation of instruments in many parts of the country did not occur until 1910, two years after the Bureau of Meteorology was formed. Subsequently, these sites were shifted to climatologically cooler locations, most often to airports or aerodromes. The resulting monthly temperature anomalies (departures from the normal value) are interpolated to the 5 km spatial grid using the Barnes successive correction techniques to obtain the monthly temperature anomalies for all of Australia.

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