High Quality weather station audit

Cape Leeuwin 9518 raw temperature audit

Station opened 1 January 1907 audit to 31 December 2011

Cape Leeuwin 9518 maximum temperature audit

At Cape Leeuwin 9518 from 1 January 1907 to September 1972, whole .0 Fahrenheit degrees represented 34.5% of all maximum temperatures recorded.

1907-1972 represented 62.9% of the time span and had 33.8% of .0C and 15.6% of .5C maximum temperatures within the entire temperature record.

From 1972-2011, maximum temperature recordings of .0 Celsius degrees represented 29.8% of the total and .5C recordings represented 17.3% of the total of all fractions since 1972. Together, .0C and .5C represented 47% of all maximum temperatures recorded since metrication.

Cape Leeuwin 9518 BoM maxima raw data feed

Cape Leeuwin BoM High Quality adjusted anomalies above

Cape Leeuwin unadjusted raw temperatures below

Cape Leeuwin 9518 minimum temperature audit

At Cape Leeuwin 9518 from 1 January 1907 to September 1972, whole .0 Fahrenheit degrees represented 36.9% of all minimum temperatures recorded.

1907-1972 represented 62.9% of the time span and had 33.2% of .0C and 15.5% of .5C minimum temperatures within the entire temperature record.

From 1972-2011, minimum temperature recordings of .0 Celsius degrees represented 31.2% of the total and .5C recordings represented 17.3% of the total of all fractions since 1972. Together, .0C and .5C represented 48.5% of all minimum temperatures recorded since metrication.

Cape Leeuwin 9518 BoM minima data feed

Cape Leeuwin BoM High Quality adjusted anomalies above

Cape Leeuwin unadjusted raw temperatures below

Extracts from Simon Torok thesis The development of a high quality historical temperature data base for Australia (1996, vol 2) which first established Australia's High Quality temperature record:

Cape Leeuwin 9518 station equipment history

Air Temperature
03/FEB/1993 INSTALL Temperature Probe - Dry Bulb (Type Rosemount S/N - NONE) Surface Observations
01/SEP/2004 REPLACE Temperature Probe - Dry Bulb (Now Rosemount ST2401 S/N - 0381) Surface Observations
01/JAN/1907 INSTALL Thermometer, Mercury, Dry Bulb (Type Unknown S/N - Unknown) Surface Observations
03/FEB/1993 REMOVE Thermometer, Mercury, Dry Bulb (Type Unknown S/N - Unknown) Surface Observations

Maximum Temperature
01/JAN/1897 INSTALL Thermometer, Mercury, Max (Type Unknown S/N - Unknown) Surface Observations
03/FEB/1993 REMOVE Thermometer, Mercury, Max (Type Dobbie S/N - Unknown) Surface Observations
27/NOV/1984 REPLACE Thermometer, Mercury, Max (Now Dobbie S/N - Unknown) Surface Observations
25/FEB/1985 REPLACE Thermometer, Mercury, Max (Now Dobbie S/N - Unknown) Surface Observations
23/SEP/1991 REPLACE Thermometer, Mercury, Max (Now Dobbie S/N - Unknown) Surface Observations

Minimum Temperature
01/JAN/1897 INSTALL Thermometer, Alcohol, Min (Type Unknown S/N - Unknown) Surface Observations
03/FEB/1993 REMOVE Thermometer, Alcohol, Min (Type Dobbie S/N - Unknown) Surface Observations
08/SEP/1985 REPLACE Thermometer, Alcohol, Min (Now Dobbie S/N - Unknown) Surface Observations

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