About annual & monthly temperature maps

How were the maps created?

Temperature data are recorded at a network of weather stations across Australia. The data from these weather stations are stored electronically in the Bureau of Meteorology's database called ADAM (Australian Data Archive for Meteorology).

The average temperature maps were based on daily temperature data from about 600 weather stations. The daily data were extracted from ADAM and a number of quality control checks were then applied to the data. For example, the data were checked for missing values over the length of the data record.

After the quality checks were applied to the data, monthly and annual averages were calculated for each of the weather stations. An objective analysis technique was then applied to these station averages to produce regular gridded datasets (each month and annual) covering Australia.

Finally, the gridded data were visualised in a geographic information system and the colour maps created through this process.

Stations used in the analysis

Daily temperature data from about 600 weather stations across Australia were used to create the average temperature maps. These stations are shown in the map below.

recording stations used in the avrerage annual and monthly temperature analysis

Temperature metadata

The following metadata summary, and detailed metadata file, provide information about the average monthly and annual gridded rainfall datasets. For example, information is provided about the format, spatial extents and analysis techniques used to generate the grids.

TITLE: Mean monthly and mean annual temperature data - maximum, minimum & mean (base climatological data sets)
DESCRIPTION: Mean monthly and mean annual temperature grids. The grids show the temperature values across Australia in the form of a two-dimensional array. The mean data are based on the standard 30-year period 1961-1990.
CUSTODIAN: Bureau of Meteorology
AVAILABLE FORMAT TYPE(S): ASCII row major, Arc/InfoTM grid export(.e00), Shapefiles.
SCALE/RESOLUTION The resolution of the data is 0.025 degrees (approximately 2.5km)