Category Archives: Climate Change

What is the mean temperature of Australia ?

ACORN2 is the latest BOM version of station data in Australia. You can plot the average temperature anomaly data for December using their trend tracker. Shown below the graph is the average temperature for the baseline period 1961-1990. The value … Continue reading

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Differences in 2019 temperatures

HadCRUT4.6 has released their annual temperature result for 2019 as 0.74C. They grid the station data (CRUTEM4) with SST data (HADSST3) in 5×5 degree bins and perform an area weighted: global average. CRUTEM4 has 7680 stations which contribute to calculating … Continue reading

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The baseline problem

A baseline is simply a period of successive years whose average temperature is subtracted from a time series to produce temperature “anomalies”. One normally associates anomalies with weather station data where the baseline is then the 12 monthly seasonal averages … Continue reading

Posted in AGW, Climate Change, climate science | Tagged , | 5 Comments