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ACORN 2.1 influence on South Australia temperature trends

Australia New South Wales Northern Territory Queensland Tasmania Victoria Western Australia


In October 2020 the Bureau of Meteorology again rewrote Australia's temperature history with the release of ACORN 2.1, an update to its homogenised ACORN 2 dataset (Australian Climate Observations Reference Network - Surface Air Temperatures) released in late 2018 that significantly increased the rate of climate warming since 1910.

There are 13 ACORN stations in South Australia. This page analyses the daily temperatures at all 13 weather stations and averages the five with a start year of 1910 to ensure a uniform timescale. The other eight excluded stations have temperature recordings starting in years after 1910, the most recent being Cape Borda with a start year of 1962.

The five long-term weather stations analysed on this page (with a start year of 1910) had a 1910-1964 average maximum of 22.04C in ACORN 2 and a 1910-1964 average maximum of 22.04C in ACORN 2.1 - meaning ACORN 2.1 has not altered the historic maxima of ACORN 2.

The five long-term weather stations had a 1910-1964 average minimum of 10.89C in ACORN 2 and a 1910-1964 average minimum of 10.89C in ACORN 2.1 - meaning ACORN 2.1 has not altered the historic minima of ACORN 2.

Daily temperatures in ACORN 2.1 and RAW have been annualised, and below are charts showing the difference between the ACORN 2.1 homogenised dataset when compared to original raw annual temperatures. This analysis only allows the inclusion of years within which there were no months with less than 15 days of recorded temperatures, as is the ACORN protocol.

Five South Australian stations begin in 1910 and end in 2019 in ACORN 2.1 and RAW - Adelaide, Marree, Port Lincoln, Robe and Snowtown. The first charts below show maximum and minimum temperature trends at these five stations with associated data.

Excel files at the bottom of each station chart and data summary can be downloaded to compare how the ACORN 2.1 algorithms influence daily, monthly and annual temperatures at all 13 sites since 1910.

acorn 2.1 south australia maximum temperatures

1910-1964 ACORN 2.1 22.04C / raw 22.18C

1965-2019 ACORN 2.1 22.91C / raw 23.02C

ACORN 2.1 warmed 0.87C / raw warmed 0.84C

Average change per decade : ACORN 2.1 0.13C / raw 0.12C

South Australia 2000-2019 - ACORN 2.1 23.40C / raw 23.43C

The first decade, 1910-1919, averaged 22.26C in ACORN 2.1 and 22.42C in raw

The final decade, 2010-2019, averaged 23.58C in ACORN 2.1 and 23.58C in raw

1961-90 - ACORN 2.1 - 22.60C / raw 22.73C

Download Excel spreadsheet for five South Australian weather stations in ACORN 1, ACORN 2.1 and RAW

acorn 2.1 south australia minimum temperatures

1910-1964 - ACORN 2.1 10.89C / raw 11.29C

1965-2019 - ACORN 2.1 11.50C / raw 11.69C

ACORN 2.1 warmed 0.61C / raw warmed 0.40C

Average change per decade : ACORN 2.1 0.06C / raw 0.04C

South Australia 2000-2019 - ACORN 2.1 11.66C / raw 11.66C

The first decade, 1910-1919, averaged 11.11C in ACORN 2.1 and 11.30C in raw

The final decade, 2010-2019, averaged 11.68C in ACORN 2.1 and 11.68C in raw

1961-90 - ACORN 2.1 - 11.35C / raw 11.71C

Download Excel spreadsheet for five South Australian weather stations in ACORN 1 and ACORN 2.1 and RAW

Station menu

Adelaide, Cape Borda, Ceduna, Kyancutta, Marree, Mount Gambier, Nuriootpa, Oodnadatta, Port Lincoln, Robe, Snowtown, Tarcoola, Woomera

Adelaide

acorn 2 adelaide maximum temperatures

1910-1964 - ACORN 2.1 21.98C / raw 21.83C

1965-2019 - ACORN 2.1 22.39C / raw 22.25C

ACORN 2.1 warmed 0.41C / raw warmed 0.42C

Average change per decade : ACORN 2.1 0.09C / raw 0.09C

Adelaide 2000-2019 - ACORN 2.1 23.02C / raw 22.99C

1961-90 - ACORN 2.1 21.99C / raw 21.77C

Pre 1972 .0 F rounding ACORN 2.1 - 17.51% / raw - 21.02%

Post 1972 .0 C rounding ACORN 2.1 - 10.06% / raw - 11.98%

The first decade, 1910-1919, averaged 22.32C in ACORN 2.1 and 22.25C in raw

The final decade, 2010-2019, averaged 23.18C in ACORN 2.1 and 23.18C in raw

Adelaide 23000 has annual max temps back to 1888: 1888-1909 = 21.87C

23000 overlap with 23090 1 February 1977 to 28 February 1979 : 23000 21.79C / 23090 21.92C

ACORN catalogue: Prior to 1977, the Regional Office (023000) was located at West Terrace, on the western edge of the central city and 3.2 km west of the current site, and observations were made there, continuing until early 1979. The site was on the edge of the main Adelaide parklands and appears to have been near the top of a small slope. There were site moves in 1944, November 1951 and a small move (15 m west) in 1962. Until 1948 there were two sets of observations made at Adelaide, one using a Glaisher stand and one using a Stevenson screen. The Glaisher stand observations, which generally had higher maximum temperatures (especially in summer), were the ones publicly reported at the time but the Stevenson screen observations are the ones used in the ACORN-SAT data (and in the Bureau’s database more generally). The widely-quoted record high temperature for Adelaide of 47.6 °C, set in January 1939, was measured in a Glaisher stand; the Stevenson screen value on this day was 46.1 °C. The current site was established in 1977. An automatic weather station was installed on 26 October 1992 and became the primary instrument on 1 November 1996.

1986-1995 raw max averaged 22.06C and post AWS 1997-2006 averaged 22.46C

Adelaide max Excel spreadsheets

acorn 2 adelaide minimum temperatures

1910-1964 ACORN 2.1 11.61C / CDO raw 11.94C

1965-2019 ACORN 2.1 12.27C / CDO raw 12.41C

ACORN 2.1 warmed 0.66C / raw warmed 0.47C

Average change per decade : ACORN 2.1 0.08C / raw 0.07C

Adelaide 2000-2019 ACORN 2.1 12.57C / raw 12.57C

1961-90 ACORN 2.1 12.07C / raw 12.40C

Pre 1972 .0 F rounding ACORN 2.1 - 19.05% / raw - 23.19%

Post 1972 .0 C rounding ACORN 2.1 - 11.13% / raw - 11.78%

The first decade, 1910-1919, averaged 11.87C in ACORN 2.1 and 12.00C in raw

The final decade, 2010-2019, averaged 12.68C in ACORN 2.1 and 12.68C in raw

Adelaide 23000 has annual min temps back to 1888: 1888-1909 = 11.80C

23000 overlap with 23090 2 February 1977 to 28 February 1979 : 23000 12.76C / 23090 12.13C

1986-1995 raw min averaged 12.10C and post AWS 1997-2006 averaged 12.28C

Adelaide min Excel spreadsheets

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Cape Borda

acorn 2.1 cape borda maximum temperatures

1962-1990 - ACORN 2.1 18.44C / raw 18.11C

1991-2019 - ACORN 2.1 19.06C / raw 18.94C

ACORN 2.1 warmed 0.62C / raw warmed 0.83C

Average change per decade : ACORN 2.1 0.22C / raw 0.29C

Cape Borda 2000-2019 - ACORN 2.1 19.25C / raw 19.18C

Pre 1972 .0 F rounding ACORN 2.1 - 16.37% / raw - 59.41%

Post 1972 .0 C rounding ACORN 2.1 - 13.17% / raw - 17.29%

The first decade, 1962-1971, averaged 18.21C in ACORN 2.1 and 17.88C in raw

The final decade, 2010-2019, averaged 19.26C in ACORN 2.1 and 19.27C in raw

22801 overlap with 22823 10 September 2002 to 30 July 2007 : 22801 18.94C / 22823 19.22C

ACORN catalogue: The former site (022801) was over bare ground in the grounds of the Cape Borda lighthouse. There was a small move within the lighthouse grounds at some point in the 1976–1978 period (the exact date is unclear). Observations continued until 2007; the original screen remains in place but contains no instruments. The current site has been operating since 2002. It is further inland and a less exposed location than the former site.

1992-2001 raw max averaged 18.56C and post AWS 2003-2012 averaged 19.03C

Cape Borda max Excel spreadsheets

acorn 2.1 cape borda minimum temperatures

1963-1990 - ACORN 2.1 11.06C / raw 11.30C

1991-2019 - ACORN 2.1 11.38C / raw 11.60C

ACORN 2.1 warmed 0.32C / raw warmed 0.30C

Average change per decade : ACORN 2.1 0.16C / raw 0.10C

Cape Borda 2000-2019 - ACORN 2.1 11.50C / raw 11.66C

Pre 1972 .0 F rounding ACORN 2.1 - 21.00% / raw - 68.13%

Post 1972 .0 C rounding ACORN 2.1 - 13.87% / raw - 19.80%

The first decade, 1963-1972, averaged 10.88C in ACORN 2.1 and 11.14C in raw

The final decade, 2010-2019, averaged 11.63C in ACORN 2.1 and 11.63C in raw

22801 overlap with 22823 11 September 2002 to 31 July 2007 : 22801 11.62C / 22823 11.23C

1992-2001 raw max averaged 11.55C and post AWS 2003-2012 averaged 11.63C

Cape Borda min Excel spreadsheets

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Ceduna

acorn 2.1 ceduna maximum temperatures

1943-1980 - ACORN 2.1 22.58C / raw 23.27C

1981-2019 - ACORN 2.1 23.63C / raw 23.82C

ACORN 2.1 warmed 1.05C / raw warmed 0.55C

Average change per decade : ACORN 2.1 0.29C / raw 0.19C

Ceduna 2000-2019 - ACORN 2.1 24.16C / raw 24.16C

1961-90 - ACORN 2.1 22.85C / raw 23.48C

Pre 1972 .0 F rounding ACORN 2.1 - 17.15% / raw - 27.43%

Post 1972 .0 C rounding ACORN 2.1 - 10.28% / raw - 11.84%

The first decade, 1943-1952, averaged 22.31C in ACORN 2.1 and 22.97C in raw

The final decade, 2010-2019, averaged 24.24C in ACORN 2.1 and 24.23C in raw

ACORN catalogue: The site has been operating since 1939. An automatic weather station has been in place since July 1990 and has been the primary instrument since 1 November 1996. A new Meteorological Office building was opened in June 2010 but the thermometer screen does not appear to have moved. There was also a site (018011) at the Post Office in town between 1939 and 1951 but this was not used for ACORN-SAT as it did not provide a useful extension of the record; there is no indication of temperature observations at the Post Office prior to 1939.

1986-1995 raw max averaged 23.33C and post AWS 1997-2006 averaged 23.73C

Ceduna max Excel spreadsheets

acorn 2.1 ceduna minimum temperatures

1943-1980 - ACORN 2.1 9.81C / raw 10.25C

1981-2019 - ACORN 2.1 10.68C / raw 10.69C

ACORN 2.1 warmed 0.87C / raw warmed 0.44C

Average change per decade : ACORN 2.1 0.25C / raw 0.17C

Ceduna 2000-2019 - ACORN 2.1 10.91C / raw 10.91C

1961-90 - ACORN 2.1 10.26C / raw 10.51C

Pre 1972 .0 F rounding ACORN 2.1 - 17.13% / raw - 33.17%

Post 1972 .0 C rounding ACORN 2.1 - 10.02% / raw - 13.32%

The first decade, 1943-1952, averaged 9.36C in ACORN 2.1 and 9.92C in raw

The final decade, 2010-2019, averaged 11.04C in ACORN 2.1 and 11.04C in raw

1986-1995 raw min averaged 10.53C and post AWS 1997-2006 averaged 10.65C

Ceduna min Excel spreadsheets

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Kyancutta

acorn 2.1 kyancutta maximum temperatures

1931-1974 - ACORN 2.1 24.41C / raw 24.93C

1975-2019 - ACORN 2.1 25.42C / raw 25.47C

ACORN 2.1 warmed 1.01C / raw warmed 0.54C

Average change per decade : ACORN 2.1 0.13C / raw 0.04C

Kyancutta 2000-2019 - ACORN 2.1 25.82C / raw 25.82C

1961-90 - ACORN 2.1 24.75C / raw 25.01C

Pre 1972 .0 F rounding ACORN 2.1 - 18.33% / raw - 31.70%

Post 1972 .0 C rounding ACORN 2.1 - 14.55% / raw - 14.62%

The first decade, 1931-1940, averaged 24.89C in ACORN 2.1 and 25.60C in raw

The final decade, 2010-2019, averaged 25.89C in ACORN 2.1 and 25.90C in raw

ACORN catalogue: There is limited documentation prior to 1979. There was a small site move (less than 50 m) on 1 March 1994.

Kyancutta max Excel spreadsheets

acorn 2.1 kyancutta minimum temperatures

1931-1974 - ACORN 2.1 8.85C / raw 9.07C

1975-2019 - ACORN 2.1 9.54C / raw 9.54C

ACORN 2.1 warmed 0.69C / raw warmed 0.47C

Average change per decade : ACORN 2.1 0.15C / raw 0.10C

Kyancutta 2000-2019 - ACORN 2.1 9.74C / raw 9.75C

1961-90 - ACORN 2.1 9.30C / raw 9.30C

Pre 1972 .0 F rounding ACORN 2.1 - 29.32% / raw - 39.30%

Post 1972 .0 C rounding ACORN 2.1 - 15.50% / raw - 15.48%

The first decade, 1931-1940, averaged 8.68C in ACORN 2.1 and 9.13C in raw

The final decade, 2010-2019, averaged 9.88C in ACORN 2.1 and 9.88C in raw

Kyancutta min Excel spreadsheets

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Marree

acorn 2 marree maximum temperatures

1910-1964 - ACORN 2.1 27.49C / raw 27.50C

1965-2019 - ACORN 2.1 28.47C / raw 29.12C

ACORN 2.1 warmed 0.98C / raw warmed 1.62C

Average change per decade : ACORN 2.1 0.18C / raw 0.20C

Marree 2000-2019 - ACORN 2.1 29.24C / raw 29.43C

1961-90 - ACORN 2.1 27.91C / raw 28.85C

Pre 1972 .0 F rounding ACORN 2.1 - 16.85% / raw - 64.94%

Post 1972 .0 C rounding ACORN 2.1 - 10.65% / raw - 9.58%

The first decade, 1910-1919, averaged 27.48C in ACORN 2.1 and 27.36C in raw

The final decade, 2010-2019, averaged 29.33C in ACORN 2.1 and 29.34C in raw

Marree 17024 has annual max temps back to 1908: 1908-1909 = 26.26C

17126 overlap with 17031 24 July 1998 to 8 January 2015 : 17126 28.95C / 17031 29.72C

ACORN catalogue: The first observations were made at Farina (017024), about 50 km to the south. Little documentation is available about the Farina site. The Marree site opened in 1939. There were issues with the enclosed nature of the site in the late 1980s and early 1990s, as well as with reports of metal sheets and motor vehicles near the screen. This improved in April 1993 when a shed to the west was demolished, a tree was removed and gravel was removed from around the screen area. An automatic weather station (017126) has been operating since July 1998 at Marree Airport, about 1 km southeast of the town. This is expected to eventually replace the current site.

Assuming the AWS was operational from 1998, 1988-1997 raw max averaged 28.96C and post AWS 1999-2008 averaged 29.54C

Marree max Excel spreadsheets

acorn 2 marree minimum temperatures

1910-1964 - ACORN 2.1 13.05C / raw 12.52C

1965-2019 - ACORN 2.1 13.67C / raw 13.61C

ACORN 2.1 warmed 0.62C / raw warmed 1.09C

Average change per decade : ACORN 2.1 0.07C / raw 0.16C

Marree 2000-2019 - ACORN 2.1 14.01C / raw 14.02C

1961-90 - ACORN 2.1 13.35C / raw 13.18C

Pre 1972 .0 F rounding ACORN 2.1 - 17.01% / raw - 68.58%

Post 1972 .0 C rounding ACORN 2.1 - 9.55% / raw - 9.16%

The first decade, 1910-1919, averaged 13.18C in ACORN 2.1 and 12.29C in raw

The final decade, 2010-2019, averaged 13.91C in ACORN 2.1 and 13.92C in raw

Marree 17024 has annual min temps back to 1908: 1908-1909 = 11.19C

17126 overlap with 17031 24 July 1998 to 9 January 2015 : 17126 13.90C / 17031 14.15C

Assuming the AWS was operational from 1998, 1988-1997 raw min averaged 13.69C and post AWS 1999-2008 averaged 14.07C

Marree min Excel spreadsheets

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Mount Gambier

acorn 2.1 mount-gambier maximum temperatures

1910-1964 - ACORN 2.1 19.01C / raw 18.58C

1965-2019 - ACORN 2.1 19.40C / raw 19.33C

ACORN 2.1 warmed 0.39C / raw warmed 0.75C

Average change per decade : ACORN 2.1 0.04C / raw 0.10C

Mount Gambier 2000-2019 - ACORN 2.1 19.75C / raw 19.74C

1961-90 - ACORN 2.1 19.26C / raw 19.11C

Pre 1972 .0 F rounding ACORN 2.1 - 18.03% / raw - 36.22%

Post 1972 .0 C rounding ACORN 2.1 - 9.69% / raw - 11.56%

The first decade, 1910-1919, averaged 19.51C in ACORN 2.1 and 18.91C in raw

The final decade, 2010-2019, averaged 19.90C in ACORN 2.1 and 19.90C in raw

Mount Gambier 26020 has annual max temps back to 1908: 1908-1909 = 18.60C

26020 overlap with 26021 1 February 1942 to 31 March 1952 : 26020 18.05C / 26021 18.09C

ACORN catalogue: Observations were originally made at the Post Office (026020). There are conflicting accounts of what type of screen may have been in use prior to 1913 and the possibility that a Glaisher stand may have been used in 1910–1912 cannot be discounted, although the data suggest it is unlikely. Observations from the Post Office ceased in 1952. The current site has been operating since 1941. It moved 800 m southwest in April 1964. An automatic weather station was installed in July 1993 and became the primary instrument on 1 November 1996.

1986-1995 raw max averaged 19.11C and post AWS 1997-2006 averaged 19.35C

Mount Gambier max Excel spreadsheets

acorn 2.1 mount-gambier minimum temperatures

1940-1979 - ACORN 2.1 7.58C / raw 7.98C

1980-2019 - ACORN 2.1 8.60C / raw 8.61C

ACORN 2.1 warmed 1.02C / raw warmed 0.63C

Average change per decade : ACORN 2.1 0.26C / raw 0.04C

Mount Gambier 2000-2019 - ACORN 2.1 8.71C / raw 8.71C

1961-90 - ACORN 2.1 8.22C / raw 8.23C

Pre 1972 .0 F rounding ACORN 2.1 - 18.69% / raw - 28.62%

Post 1972 .0 C rounding ACORN 2.1 - 10.07% / raw - 12.53%

The first decade, 1940-1949, averaged 6.98C in ACORN 2.1 and 8.50C in raw

The final decade, 2010-2019, averaged 8.81C in ACORN 2.1 and 8.81C in raw

Note: Mount Gambier 26020 begins its daily RAW minimum temperatures in 1940, unlike maxima which begin in 1910 - although ACORN 2.1 has daily minimum temperatures starting in 1910. Averages above are from 1940 but the chart begins in 1910 so readers can see the ACORN trends during 1910-1939. ACORN 1 1910-1939 averaged 8.36C and ACORN 2.1 1910-1939 averaged 7.65C.

26020 overlap with 26021 1 February 1942 to 31 March 1952 : 26020 18.05C / 26021 18.09C

1986-1995 raw min averaged 8.60C and post AWS 1997-2006 averaged 8.44C

Mount Gambier min Excel spreadsheets

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Nuriootpa

acorn 2.1 nuriootpa maximum temperatures

1957-1987 - ACORN 2.1 20.80C / raw 20.90C

1988-2019 - ACORN 2.1 21.48C / raw 21.47C

ACORN 2.1 warmed 0.68C / raw warmed 0.57C

Average change per decade : ACORN 2.1 0.21C / raw 0.23C

Nuriootpa 2000-2019 - ACORN 2.1 21.75C / raw 21.75C

1961-90 - ACORN 2.1 20.85C / raw 20.97C

Pre 1972 .0 F rounding ACORN 2.1 - 16.90% / raw - 26.08%

Post 1972 .0 C rounding ACORN 2.1 - 17.18% / raw - 14.31%

The first decade, 1957-1966, averaged 20.76C in ACORN 2.1 and 20.70C in raw

The final decade, 2010-2019, averaged 21.89C in ACORN 2.1 and 21.89C in raw

23321 overlap with 23373 28 August 1996 to 28 February 1999 : 23321 21.61C / 23373 21.71C

ACORN catalogue: The original manual site (023321), which continued until 1999, was about 30 m away from the current site, in the same strip of open ground between rows of vines. There was some earth and rock near this site, at least in its later years. This site moved about 300 m south in August 1983. The current site has been operating since August 1996.

Assuming the AWS was operational from 1996, 1986-1995 raw min averaged 20.94C and post AWS 1997-2006 averaged 21.35C

Nuriootpa max Excel spreadsheets

acorn 2.1 nuriootpa minimum temperatures

1957-1987 - ACORN 2.1 8.52C / raw 8.65C

1988-2019 - ACORN 2.1 9.14C / raw 9.15C

ACORN 2.1 warmed 0.62C / raw warmed 0.50C

Average change per decade : ACORN 2.1 0.19C / raw 0.18C

Nuriootpa 2000-2019 - ACORN 2.1 9.23C / raw 9.24C

1961-90 - ACORN 2.1 8.68C / raw 8.80C

Pre 1972 .0 F rounding ACORN 2.1 - 16.75% / raw - 30.27%

Post 1972 .0 C rounding ACORN 2.1 - 15.62% / raw - 12.76%

The first decade, 1957-1966, averaged 8.30C in ACORN 2.1 and 8.34C in raw

The final decade, 2010-2019, averaged 9.30C in ACORN 2.1 and 9.30C in raw

23321 overlap with 23373 28 August 1996 to 28 February 1999 : 23321 9.08C / 23373 8.96C

Assuming the AWS was operational from 1996, 1986-1995 raw min averaged 8.98C and post AWS 1997-2006 averaged 9.01C

Nuriootpa min Excel spreadsheets

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Oodnadatta

acorn 2.1 oodnadatta maximum temperatures

1941-1979 - ACORN 2.1 28.66C / raw 28.73C

1980-2018 - ACORN 2.1 29.56C / raw 29.69C

ACORN 2.1 warmed 0.90C / raw warmed 0.96C

Average change per decade : ACORN 2.1 0.22C / raw 0.25C

Oodnadatta 2000-2019 - ACORN 2.1 29.85C / raw 29.85C

1961-90 - ACORN 2.1 28.87C / raw 29.08C

Pre 1972 .0 F rounding ACORN 2.1 - 18.40% / raw - 26.21%

Post 1972 .0 C rounding ACORN 2.1 - 9.64% / raw - 13.77%

The first decade, 1941-1950, averaged 28.64C in ACORN 2.1 and 28.29C in raw

The final decade, 2010-2019, averaged 29.99C in ACORN 2.1 and 22.99C in raw

ACORN catalogue: Observations from 1940 until 1985 came from the former Meteorological Office at the airport, using the current site number (017043). After the closure of the Meteorological Office in 1985, observations were made at the police station (017114) in the town. These observations became increasingly intermittent and ceased altogether in 1991. The automatic weather station, in almost exactly the same location as the original Meteorological Office, began operating in November 1994.

1984-1993 raw max averaged 28.71C and post AWS 1995-2004 averaged 29.39C

Oodnadatta max Excel spreadsheets

acorn 2.1 oodnadatta minimum temperatures

1941-1979 - ACORN 2.1 14.41C / raw 14.35C

1980-2019 - ACORN 2.1 15.05C / raw 15.04C

ACORN 2.1 warmed 0.64C / raw warmed 0.69C

Average change per decade : ACORN 2.1 0.19C / raw 0.16C

Oodnadatta 2000-2019 - ACORN 2.1 15.14C / raw 15.3C

1961-90 - ACORN 2.1 14.79C / raw 14.50C

Pre 1972 .0 F rounding ACORN 2.1 - 18.66% / raw - 26.73%

Post 1972 .0 C rounding ACORN 2.1 - 9.48% / raw - 11.14%

The first decade, 1941-1950, averaged 13.80C in ACORN 2.1 and 14.02C in raw

The final decade, 2010-2019, averaged 15.14C in ACORN 2.1 and 15.13C in raw

1984-1993 raw min averaged 14.60C and post AWS 1995-2004 averaged 15.08C

Oodnadatta min Excel spreadsheets

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Port Lincoln

acorn 2 port lincoln maximum temperatures

1910-1964 - ACORN 2.1 20.09C / raw 20.55C

1965-2019 - ACORN 2.1 20.84C / raw 21.15C

ACORN 2.1 warmed 0.75C / raw warmed 0.60C

Average change per decade : ACORN 2.1 0.12C / raw 0.04C

Port Lincoln 2000-2019 - ACORN 2.1 21.51C / raw 21.51C

1961-90 - ACORN 2.1 20.40C / raw 20.91C

Pre 1972 .0 F rounding ACORN 2.1 - 18.02% / raw - 74.01%

Post 1972 .0 C rounding ACORN 2.1 - 9.80% / raw - 14.47%

The first decade, 1910-1919, averaged 20.48C in ACORN 2.1 and 21.28C in raw

The final decade, 2010-2019, averaged 21.71C in ACORN 2.1 and 21.71C in raw

Port Lincoln 18070 has max temps back to 1892 : 1892-1909 = 20.55C

ACORN catalogue: The original site (018070) was in the town centre. In its later years this site was quite built-up, with buildings, a fence and a concrete surface in the vicinity. There were numerous small moves in its history, with documented moves in October 1924, December 1941, July 1962, February 1975 and October 1986 (40 m east). It closed in March 2002. The current site has been operating since 1992.

Port Lincoln max Excel spreadsheets

acorn 2 port lincoln minimum temperatures

1910-1964 - ACORN 2.1 10.88C / raw 11.66C

1965-2019 - ACORN 2.1 11.42C / raw 11.65C

ACORN 2.1 warmed 0.54C / raw cooled 0.01C

Average change per decade : ACORN 2.1 0.02C / raw 0.00C

Port Lincoln 2000-2019 - ACORN 2.1 11.39C / raw 11.39C

1961-90 - ACORN 2.1 11.46C / raw 12.03C

Pre 1972 .0 F rounding ACORN 2.1 - 16.62% / raw - 75.32%

Post 1972 .0 C rounding ACORN 2.1 - 9.83% / raw - 15.23%

The first decade, 1910-1919, averaged 11.17C in ACORN 2.1 and 11.34C in raw

The final decade, 2010-2019, averaged 11.36C in ACORN 2.1 and 11.36C in raw

Port Lincoln 18070 has min temps back to 1892 : 1892-1909 = 10.76C

Port Lincoln min Excel spreadsheets

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Robe

acorn 2 robe maximum temperatures

1910-1964 - ACORN 2.1 18.08C / raw 17.89C

1965-2019 - ACORN 2.1 18.35C / raw 18.55C

ACORN 2.1 warmed 0.27C / raw warmed 0.66C

Average change per decade : ACORN 2.1 0.04C / raw 0.08C

Robe 2000-2019 - ACORN 2.1 18.61C / raw 18.62C

1961-90 - ACORN 2.1 18.17C / raw 18.55C

Pre 1972 .0 F rounding ACORN 2.1 - 18.03% / raw - 58.69%

Post 1972 .0 C rounding ACORN 2.1 - 12.14% / raw - 19.90%

The first decade, 1910-1919, averaged 18.28C in ACORN 2.1 and 17.90C in raw

The final decade, 2010-2019, averaged 18.68C in ACORN 2.1 and 18.68C in raw

Robe 26026 has annual max temps back to 1885: 1885-1909 = 17.89C

ACORN catalogue: There were issues with the screen door for some years prior to repairs in 1930. There was a very small move (3 m) in October 1943, and documentation also suggests a small move at some point in the decade prior to 1956 but there is no clear evidence of its nature or timing. There was a move 200 m east in November 1968 An automatic weather station (026105) was installed at Robe Airport, 5 km east-southeast of the town, in 2003. It is at an inland location quite different climatically from the town site, so is not expected to be a direct replacement for the town site.

Assuming 2003 was when AWS readings were adopted, 1993-2002 raw max averaged 18.36C and post AWS 2004-2013 averaged 18.62C

Robe max Excel spreadsheets

acorn 2 robe minimum temperatures

1910-1964 - ACORN 2.1 10.71C / raw 10.83C

1965-2019 - ACORN 2.1 11.30C / raw 11.22C

ACORN 2.1 warmed 0.59C / raw warmed 0.39C

Average change per decade : ACORN 2.1 0.05C / raw 0.04C

Robe 2000-2019 - ACORN 2.1 11.37C / raw 11.36C

1961-90 - ACORN 2.1 11.18C / raw 11.06C

Pre 1972 .0 F rounding ACORN 2.1 - 32.00% / raw - 64.92%

Post 1972 .0 C rounding ACORN 2.1 - 19.01% / raw - 19.14%

The first decade, 1910-1919, averaged 10.88C in ACORN 2.1 and 11.01C in raw

The final decade, 2010-2019, averaged 11.38C in ACORN 2.1 and 11.37C in raw

Robe 26026 has annual min temps back to 1885: 1885-1909 = 10.49C

Assuming 2003 was when AWS readings were adopted, 1993-2002 raw min averaged 11.35C and post AWS 2004-2013 averaged 11.42C

Robe min Excel spreadsheets

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Snowtown

acorn 2 snowtown maximum temperatures

1910-1964 - ACORN 2.1 22.70C / raw 23.25C

1965-2019 - ACORN 2.1 23.64C / raw 23.83C

ACORN 2.1 warmed 0.94C / raw warmed 0.58C

Average change per decade : ACORN 2.1 0.15C / raw 0.10C

Snowtown 2000-2019 - ACORN 2.1 24.26C / raw 24.27C

1961-90 - ACORN 2.1 23.14C / raw 23.50C

Pre 1972 .0 F rounding ACORN 2.1 - 18.16% / raw - 78.10%

Post 1972 .0 C rounding ACORN 2.1 - 19.22% / raw - 22.12%

The first decade, 1910-1919, averaged 22.79C in ACORN 2.1 and 23.36C in raw

The final decade, 2010-2019, averaged 24.34C in ACORN 2.1 and 24.34C in raw

Snowtown 21046 has annual max temps for 1909 = 21.72C

21046 overlap with 21133 23 July 1998 to 29 June 2001 : 21046 24.41C / 21133 23.97C

ACORN catalogue: The former site (021046), which continued until June 2001, was located in the town. Small moves within the town are documented in April 1948, July 1971 and on 4 August 1993 (15 m). The current site has been operating since 1998.

1988-1997 raw max averaged 23.65C and post AWS 1999-2008 averaged 24.15C

Snowtown max Excel spreadsheets

acorn 2 snowtown minimum temperatures

1910-1964 - ACORN 2.1 8.12C / raw 9.53C

1965-2019 - ACORN 2.1 8.76C / raw 9.52C

ACORN 2.1 warmed 0.64C / raw cooled 0.01C

Average change per decade : ACORN 2.1 0.05C / raw -0.09C

Snowtown 2000-2019 - ACORN 2.1 8.98C / raw 8.98C

1961-90 - ACORN 2.1 8.60C / raw 9.87C

Pre 1972 .0 F rounding ACORN 2.1 - 20.45% / raw - 83.24%

Post 1972 .0 C rounding ACORN 2.1 - 19.42% / raw - 21.20%

The first decade, 1910-1919, averaged 8.55C in ACORN 2.1 and 9.92C in raw

The final decade, 2010-2019, averaged 9.05C in ACORN 2.1 and 9.05C in raw

Snowtown 21046 has annual min temps for 1909 = 8.50C

21046 overlap with 21133 24 July 1998 to 30 June 2001 : 21046 10.42C / 21133 9.03C

1988-1997 raw min averaged 9.96C and post AWS 1999-2008 averaged 8.87C

Snowtown min Excel spreadsheets

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Tarcoola

acorn 2.1 tarcoola maximum temperatures

1922-1970 - ACORN 2.1 26.18C / raw 26.60C

1971-2019 - ACORN 2.1 27.10C / raw 27.46C

ACORN 2.1 warmed 0.92C / raw warmed 0.86C

Average change per decade : ACORN 2.1 0.19C / raw 0.14C

Tarcoola 2000-2019 - ACORN 2.1 27.78C / raw 27.84C

1961-90 - ACORN 2.1 26.44C / raw 26.96C

Pre 1972 .0 F rounding ACORN 2.1 - 18.45% / raw - 70.37%

Post 1972 .0 C rounding ACORN 2.1 - 15.99% / raw - 19.91%

The first decade, 1922-1931, averaged 26.33C in ACORN 2.1 and 26.77C in raw

The final decade, 2010-2019, averaged 27.97C in ACORN 2.1 and 27.98C in raw

16044 overlap with 16098 1 October 1997 to 9 August 1999 : 16044 26.64C / 16098 27.64C

ACORN catalogue: The original site (016044) was in the settlement. No documentation is available prior to 1995. A new building was erected in its vicinity in early 1998 and observations ended in August 1999. The current site has been operating since 1997, on mostly flat ground 1.4 km northeast of the original site and at a slightly higher. In its early years the automatic station suffered from numerous data outages due to power supply problems.

1987-1996 raw max averaged 27.48C and post AWS 1998-2007 averaged 27.52C

Tarcoola max Excel spreadsheets

acorn 2.1 tarcoola minimum temperatures

1922-1970 - ACORN 2.1 10.55C / raw 11.04C

1971-2019 - ACORN 2.1 11.75C / raw 11.91C

ACORN 2.1 warmed 1.20C / raw warmed 0.87C

Average change per decade : ACORN 2.1 0.25C / raw 0.22C

Tarcoola 2000-2019 - ACORN 2.1 12.32C / raw 12.17C

1961-90 - ACORN 2.1 11.06C / raw 11.67C

Pre 1972 .0 F rounding ACORN 2.1 - 18.37% / raw - 74.06%

Post 1972 .0 C rounding ACORN 2.1 - 9.64% / raw - 18.36%

The first decade, 1922-1931, averaged 10.08C in ACORN 2.1 and 10.26C in raw

The final decade, 2010-2019, averaged 12.28C in ACORN 2.1 and 12.23C in raw

16044 overlap with 16098 2 October 1997 to 10 August 1999 : 16044 11.57C / 16098 12.34C

1987-1996 raw min averaged 11.74C and post AWS 1998-2007 averaged 12.06C

Tarcoola min Excel spreadsheets

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Woomera

acorn 2.1 woomera maximum temperatures

1950-1984 - ACORN 2.1 25.48C / raw 25.47C

1985-2019 - ACORN 2.1 26.37C / raw 26.30C

ACORN 2.1 warmed 0.89C / raw warmed 0.83C

Average change per decade : ACORN 2.1 0.27C / raw 0.27C

Woomera 2000-2019 - ACORN 2.1 26.75C / raw 26.71C

1961-90 - ACORN 2.1 25.61C / raw 25.59C

Pre 1972 .0 F rounding ACORN 2.1 - 17.11% / raw - 26.76%

Post 1972 .0 C rounding ACORN 2.1 - 10.14% / raw - 12.42%

The first decade, 1950-1959, averaged 25.23C in ACORN 2.1 and 25.22C in raw

The final decade, 2010-2019, averaged 26.85C in ACORN 2.1 and 26.85C in raw

ACORN catalogue: TThe site has been operating since 1949, with a documented move of about 75 m in January 1980, and another about 2 km south on 16 May 1991. An automatic weather station was installed in June 1991 and became the primary instrument on 1 November 1996.

1986-1995 raw max averaged 25.75C and post AWS 1997-2006 averaged 26.30C

Woomera max Excel spreadsheets

acorn 2.1 woomera minimum temperatures

1950-1984 - ACORN 2.1 12.38C / raw 12.48C

1985-2019 - ACORN 2.1 13.05C / raw 13.07C

ACORN 2.1 warmed 0.67C / raw warmed 0.59C

Average change per decade : ACORN 2.1 0.24C / raw 0.21C

Woomera 2000-2019 - ACORN 2.1 13.28C / raw 13.28C

1961-90 - ACORN 2.1 12.61C / raw 12.66C

Pre 1972 .0 F rounding ACORN 2.1 - 18.96% / raw - 30.46%

Post 1972 .0 C rounding ACORN 2.1 - 10.87% / raw - 12.80%

The first decade, 1950-1959, averaged 11.94C in ACORN 2.1 and 12.13C in raw

The final decade, 2010-2019, averaged 13,36C in ACORN 2.1 and 13.36C in raw

1986-1995 raw max averaged 12.72C and post AWS 1997-2006 averaged 13.13C

Woomera min Excel spreadsheets

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