Australia's Victoria state saw its hottest high temperatures on record Friday in two locations, smashing the state's previous record from New … This differs from ACORN-SAT, which constructs a continent-wide daily temperature record for Australia. Weather stations move for a variety of reasons. Australia recorded its hottest month ever in January, with average temperatures exceeding 30C (86F) for the first time. percentiles, Rainfall 2012. Alternative methods, such as the Thiessen polygon method, exist for area-weighting location values, but the grid-point-based value is used by the Bureau because of its flexibility in allowing calculations to be made for any specified region as opposed to regions that depend on the distribution of stations. The 'Data and networks' section includes links to download data for individual stations or zipped files for all stations. However it should be noted that satellite-based estimates of temperature are a less appropriate measure of land surface temperature than those derived from ground-based stations. (see Orbost adjustment example published in 2014 using version 1 data). A temperature dataset that is resolved at the daily timescale provides much more detailed information on extreme weather and climate events, such as heatwaves, which are associated with some of the largest weather impacts in Australia. Australia’s hottest day ever was during the Angry Summer, January 7, 2013, where the temperature of the entire country was measured at 40.3C.This broke the previous record for the hottest day in Australia ever, set on December 21, 1972, which saw a temperature … Andamooka in outback South Australia reached 48 degrees on Saturday, surpassing the 47.9 degrees recorded at Tarcoola in November 1993. Meteorological organisations update datasets to ensure they are incorporating the latest scientific understanding, computing capabilities and additional data. 2010. The technique has the effect of weighting each location value according to how large its ‘footprint’ is. Conversely, notable cold events include the frosts of July 1895, and two significant low-altitude snowfalls, in 1900 and 1901. A notable frost hollow at Coonabarabran, New South Wales. In a second stage, those locations which were classified as urban fringe, and those which were formerly urban but are no longer (e.g. 2013 was not the warmest year in some satellite records of the temperature of the lower troposphere (also known as MSU-lt; microwave sounding unit-lower troposphere). Temperature data adjustments make almost no difference to the characterisation of extreme temperatures or the change in extreme temperatures over the past 100 years. Adjustments have been applied to account for these differences. The number of weather stations recording very warm night-time temperatures and the frequency with which these occur has increased since the mid-1970s. Statistical detection using reference stations tests must also take into account the trends in data—otherwise results will be unreliable. When adjusting temperatures based on correlations with other sites, the general approach in ACORN-SAT is to assume that inter-site relationships for all values above the 95th percentile are the same as those for the 95th percentile (and analogously for values below the 5th percentile). Berkeley Earth temperature averaging process. Warming in the Australian region is also evident in local sea surface temperatures. This is physically unrealistic in terms of the length-scale of monthly temperatures (see Question 12), with the 1961–1990 mean difference between these sites being just 0.3 °C. However, this task is much more difficult when the network has very sparse coverage and descriptions of recording practices are patchy. More information on the manual and automatic practices and processes used by the Bureau to obtain these surface air temperature data is available from Australian Climate Observations Reference Network – Surface Air Temperature (ACORN-SAT) Observation practices. *Mount Read was affected by wind, snow and outages on several occasions during 2016, so the exact total is not known but is almost certainly higher. , Kennedy, J.J., Rayner, N.A. Minister for the Environment announced the establishment Temperature records were being maintained around settlements, but there was very little data for Western Australia, Tasmania and much of central Australia (Figure 2). 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