Monthly mean surface temperature at Davis station


1. Dataset information

Station location: 68°35'S, 77°58'E, Broad Peninsula, Prydz Bay, Ingrid Christiansen Coast, Princess Elizabeth Land, East Antarctica.

WMO identification: 89571

Data in black are derived from the READER dataset and are calculated from 6-hourly synoptic data. Data after 2005, shown in red, have been provided by Doug Shepherd and Ian Barnes-Keoghan of the Australian Bureau of Meteorology and are based on 3-hourly synoptic data. These values will be adjusted to be compatible with the READER data at some point in the future; however, any differences will be minimal.

Go straight to the data.


2. Derived climate information

(i) Annual, seasonal and monthly temperature statistics for Davis

With regard to summer (DJF) the year refers to the December.

Annual/Season/Month Mean
(°C)
σ
(°C)
Min.
(°C)
q0.25
(°C)
q0.75
(°C)
Max.
(°C)
Period n
Calendar year−10.10.9−12.6−10.5−9.6−8.21958-63, 1970-201148
Autumn−12.21.7−15.4−13.5−11.0−9.21957-64, 1969-201252
Winter−16.71.8−21.0−17.9−15.3−12.31957-64, 1969-201252
Spring−11.01.2−14.4−11.7−10.1−8.31957-63, 1969-201251
Summer−0.50.7−1.9−1.0−0.1+1.21957-63, 1969-201150
January+0.91.0−1.4+0.1+1.6+3.11958-64, 1970-201250
February−2.41.1−4.8−3.1−2.0+1.21958-64, 1970-201250
March−8.01.5−12.3−8.9−6.9−5.21957-64, 1969-201252
April−13.02.5−20.8−14.3−11.3−8.41957-64, 1969-201252
May−15.62.8−20.6−17.5−13.4−9.71957-64, 1969-201252
June−15.52.2−22.4−16.9−14.1−11.01957-64, 1969-201252
July−17.33.3−25.3−19.5−15.6−7.01957-64, 1969-201252
August−17.33.0−25.2−19.3−15.0−12.11957-64, 1969-201252
September−16.22.7−23.1−17.9−14.4−11.11957-64, 1969-201252
October−12.01.9−16.7−12.9−11.1−7.61957-64, 1969-201252
November−4.81.3−7.7−5.5−4.1−2.31957-63, 1969-201251
December+0.11.1−2.0−0.7+0.8+2.71957-63, 1969-201150
Summary of annual, seasonal and monthly Davis surface temperature statistics

The monthly data are summarised in a PDF plot: Adobe Acrobat Reader can be downloaded from here

Davis monthly temperature statistics: this plot shows the mean, quartiles and range for each month.



(ii) Annual, seasonal and monthly trends in the Davis surface temperature data

The trends listed below include 95% confidence intervals. The methodology is based upon:

Santer B.D., T.M.L. Wigley, J.S. Boyle, D. J. Gaffen, J.J. Hnilo, D. Nychka, D.E. Parker and K.E. Taylor. 2000: Statistical significance of trends and trend differences in layer-average temperature time series. Journal of Geophysical Research, 105, 7337-7356.

Briefly, an effective sample size is calculated based on the lag-1 autocorrelation coefficient of the regression residuals, This effective sample size is used for the computation of the standard error and in indexing the critical values of the Student''s t distribution.

The significance level of the trend is given if it is less than 10%, 5% or 1%. With regard to summer (DJF) the year refers to the December.

Annual/Season/Month Annual trend
(°C a−1)
Significance
(%)
Period n
Calendar year+0.0096 ± 0.0150-1958-63, 1970-201148
Autumn+0.0027 ± 0.0286-1957-64, 1969-201252
Winter+0.0046 ± 0.0285-1957-64, 1969-201252
Spring+0.0155 ± 0.0220-1957-63, 1969-201251
Summer+0.0072 ± 0.0145-1957-63, 1969-201150
January+0.0091 ± 0.0238-1958-64, 1970-201250
February+0.0082 ± 0.0183-1958-64, 1970-201250
March+0.0207 ± 0.0209101957-64, 1969-201252
April−0.0056 ± 0.0451-1957-64, 1969-201252
May−0.0072 ± 0.0420-1957-64, 1969-201252
June+0.0066 ± 0.0376-1957-64, 1969-201252
July+0.0090 ± 0.0515-1957-64, 1969-201252
August−0.0020 ± 0.0438-1957-64, 1969-201252
September+0.0320 ± 0.0428-1957-64, 1969-201252
October+0.0024 ± 0.0334-1957-64, 1969-201252
November+0.0198 ± 0.0241-1957-63, 1969-201251
December+0.0042 ± 0.0196-1957-63, 1969-201150
Summary of trends in annual, seasonal and monthly Davis surface temperature

PDF plots of the annual and seasonal data: Adobe Acrobat Reader can be downloaded from here

Calendar year Autumn (MAM) Winter (JJA) Spring (SON) Summer (DJF)


3. The dataset

        JAN    FEB    MAR    APR    MAY    JUN    JUL    AUG    SEP    OCT    NOV    DEC    ANN

1957                 -8.0   -9.5  -14.4  -11.8  -17.3  -15.2  -16.1   -8.5   -6.3    0.0
1958    0.3   -3.7   -7.4  -11.9  -13.5  -16.8  -14.4  -18.9  -18.3  -13.1   -6.1    0.0  -10.3
1959   -1.4   -3.7   -5.2  -11.6  -13.0  -17.0  -17.4  -16.9  -19.6  -11.0   -5.9   -0.2  -10.2
1960   -0.1   -2.3  -11.1  -14.6  -16.9  -19.6  -22.7  -17.5  -16.2  -12.4   -4.3   -0.9  -11.5
1961    0.6   -0.3   -6.4   -9.6  -11.6  -15.7  -13.1  -15.6  -12.0  -12.3   -4.7   -1.4   -8.5
1962   -1.4   -2.4   -8.8  -14.8  -19.1  -16.1  -19.4  -21.5  -17.6  -12.3   -5.2   -0.7  -11.6
1963    0.5   -4.3   -9.5  -14.1  -16.3  -14.5  -17.2  -13.5  -15.0  -13.9   -5.0   -0.7  -10.3
1964    0.3   -1.5   -9.1  -16.5  -18.1  -13.5  -17.2  -15.0  -20.9  -12.4
1965
1966
1967
1968
1969                 -7.6  -12.3  -17.0  -15.2  -18.8  -22.6  -17.1  -12.0   -5.5    1.2
1970    0.4   -3.3   -6.1  -12.0  -11.3  -16.9  -17.5  -17.0  -14.9  -12.7   -4.9    1.0   -9.6
1971    1.7   -2.0   -8.8  -14.5  -13.1  -18.3  -16.0  -14.6  -14.5  -10.4   -5.3    1.4   -9.5
1972    3.0   -2.0   -6.9  -11.3  -19.2  -13.7  -18.6  -12.4  -16.7  -15.0   -5.0   -1.0   -9.9
1973    0.9   -3.0  -10.9  -13.9  -14.4  -12.7  -20.9  -18.0  -12.0  -10.1   -2.8   -1.1   -9.9
1974    2.2   -2.5   -8.8  -12.3  -16.4  -13.0  -15.3  -14.1  -18.3   -7.6   -2.8    2.1   -8.9
1975    2.6   -2.9   -9.6  -14.3  -11.7  -14.3  -18.2  -19.8  -18.3  -12.1   -3.2   -0.1  -10.2
1976    1.7   -2.5   -9.8  -13.3  -20.0  -14.7  -16.1  -21.1  -18.3   -9.5   -4.7    1.6  -10.6
1977    3.1   -2.1   -9.8  -13.1  -14.7  -15.2  -17.6  -15.9  -21.2  -14.8   -7.2   -0.5  -10.8
1978   -0.2   -2.4   -6.4  -11.2  -15.0  -13.3  -16.2  -22.2  -17.3  -16.7   -4.6    0.3  -10.4
1979    0.1   -3.3   -9.2  -12.2  -15.6  -17.8  -20.5  -17.8  -14.8  -12.5   -4.9    0.8  -10.6
1980    0.7   -3.4   -6.2  -10.1  -19.6  -19.9  -11.9  -17.3  -13.7  -11.7   -2.3    0.2   -9.6
1981    0.7   -3.3   -7.8  -17.2  -16.2  -16.2  -16.0  -12.1  -14.8  -15.0   -4.9   -0.6  -10.3
1982    0.2   -2.5  -12.3  -18.1  -15.9  -22.4  -15.5  -25.2  -23.1  -12.6   -4.5    1.0  -12.6
1983    1.7   -2.0   -8.4  -10.6  -13.1  -15.0  -20.7  -16.3  -13.1  -13.6   -7.7   -1.2  -10.0
1984    2.2   -2.6   -8.0  -10.9  -14.3  -17.5  -18.6  -15.9  -14.7  -15.5   -5.5    1.2  -10.0
1985    1.4   -3.7   -7.6  -11.4  -15.1  -13.6  -25.3  -18.1  -17.3  -12.9   -6.1   -1.3  -10.9
1986    0.0    1.2   -7.0  -12.4  -11.9  -18.5  -18.6  -18.6  -15.1  -11.3   -5.9   -0.8   -9.9
1987    1.4   -2.3   -9.0  -14.3  -17.8  -14.9  -13.5  -19.4  -18.9  -11.7   -5.2    0.4  -10.4
1988    1.0   -3.1   -5.6  -12.6  -11.0  -12.3  -18.2  -15.0  -13.7   -8.7   -5.5   -1.4   -8.8
1989    0.5   -3.0  -10.8  -14.9  -19.9  -14.5  -18.5  -13.6  -11.3   -9.0   -7.1    1.3  -10.1
1990    1.4   -2.9   -8.5   -9.1  -12.4  -15.8  -16.5  -15.8  -17.5  -12.3   -4.0    0.7   -9.4
1991   -0.5   -1.5   -6.6   -8.4  -14.0  -11.4  -11.1  -14.3  -17.4  -11.4   -4.2    2.7   -8.2
1992    1.7   -0.8   -7.5  -17.8  -18.0  -17.3  -20.6  -18.6  -20.3  -11.3   -4.4   -1.5  -11.4
1993    1.5   -2.2   -8.2  -14.2  -20.6  -18.2  -22.2  -21.8  -20.0  -12.7   -5.8   -1.2  -12.1
1994   -0.2   -2.8   -8.7  -14.3  -19.6  -11.0  -15.4  -20.0  -11.8  -10.1   -4.6   -0.4   -9.9
1995   -0.1   -2.9   -7.0  -13.9  -16.3  -16.2   -7.0  -17.3  -16.4  -13.5   -4.1   -0.2   -9.6
1996    1.4   -1.4   -8.1  -12.1  -17.5  -14.3  -17.4  -13.3  -13.4  -11.9   -3.5    0.0   -9.3
1997    0.2   -2.1   -6.0  -15.1  -17.0  -14.5  -16.4  -18.7  -18.2  -12.0   -4.6    0.8  -10.3
1998    0.1   -2.2   -9.4  -20.8  -16.1  -15.7  -19.2  -12.8  -16.8  -12.7   -3.8    0.3  -10.8
1999    0.0   -2.4   -9.0  -14.3  -17.8  -14.0  -19.5  -16.9  -17.3  -10.1   -7.4   -2.0  -10.9
2000   -0.6   -3.2   -7.3   -9.6  -17.3  -15.7  -15.7  -14.7  -13.7  -15.2   -2.7    0.4   -9.6
2001    1.3   -2.3   -7.3  -13.1  -13.2  -16.9  -16.2  -19.8  -16.3  -11.3   -3.7   -0.6   -9.9
2002    1.0   -3.1   -6.1  -10.8  -10.6  -13.3  -14.7  -19.1  -15.1   -9.7   -4.2   -0.6   -8.9
2003    1.6    0.0   -6.3  -13.0  -17.4  -14.4  -19.4  -18.2  -14.2  -11.6   -4.6    1.1   -9.7 
2004    1.7   -0.7   -7.7  -13.4  -13.4  -18.1  -21.1  -15.2  -17.1  -10.4   -3.7    1.9   -9.8
2005    2.0   -2.8   -6.2  -15.6  -17.2  -15.1  -20.4  -19.6  -15.1  -11.2   -4.7    2.5  -10.3
2006    0.9   -3.1   -7.0   -8.7  -19.5  -14.9  -20.3  -14.6  -15.2  -12.8   -3.9   -0.2   -9.9
2007    1.1   -1.5   -7.7  -10.7   -9.7  -13.9  -11.4  -13.7  -15.6  -11.9   -2.6   -0.9   -8.2
2008   -0.5   -2.6   -8.0  -12.0  -13.4  -16.9  -15.8  -22.6  -20.6  -14.1   -4.4    0.5  -10.9
2009    0.8   -1.9   -7.8  -13.5  -13.4  -15.0  -14.2  -19.0  -13.2  -11.9   -4.4   -0.5   -9.5
2010    2.3   -1.9   -6.8  -15.3  -15.6  -14.1  -21.2  -19.6  -11.1  -12.3   -6.6   -0.3  -10.2
2011    1.2   -4.8   -6.9  -13.0  -16.5  -18.3  -12.3  -15.2  -14.3  -14.2   -4.2   -0.5   -9.9
2012    0.6   -2.4   -8.6  -14.4  -17.1  -15.2  -20.5  -15.2  -16.0   -9.7   -3.1

4. Links

The Davis station home page.


The Australian Antarctic Division home page.


The Australian Bureau of Meteorology home page.


The latest synoptic report from Davis station.



This web page was written to look good in MS Explorer 5.0+ using character entity references from HTML 4.0. Apologies if it doesn't quite work for you — anyway the data should be OK. Comments should be addressed to Dr Gareth Marshall at gjma@pcmail.nbs.ac.uk.

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