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Data quality control. The Bureau of Meteorology's rainfall and temperature analyses use reliable data collected through electronic communication channels and screened for errors, but not yet fully quality controlled. Full quality control is completed some weeks after the end of the most recent month when. extreme values are confirmed by written ...
- Crunching The Numbers
- Complex Methods
- High-Quality Data
Data homogenisation techniques are used to varying degrees by many national weather agencies and climate researchers around the world. Although the World Meteorological Organization has guidelines for data homogenisation, the methods used vary from country to country, and in some cases no data homogenisation is applied. Homogenisation can be necess...
Australia has played a leading role in developing this type of complex data-adjustment technique. In 2010, the Bureau’s Blair Trewin wrote a comprehensive article on the types of inhomogeneities that are found in land temperature records. As a result the International Surface Temperature Initiative (ISTI) has set up a working groupto compare homoge...
Far from being a fudge to make warming look more severe than it is, most of the Bureau’s data manipulation has in fact had the effect of reducing the apparent extreme temperature trends across Australia. Cherrypicking weather stationswhere data have been corrected in a warming direction doesn’t mean the overall picture is wrong. Data homogenisation...
Bureau Forecast Accuracy. Measuring accuracy is a key part of assessing the performance of our forecasts. We do this by comparing our forecasts to actual weather data. This data is recorded by our observation network. To improve our forecasts, we increase: understanding of the atmosphere. resolution of our forecast models – spatial and temporal.
Feb 4, 2022 · On its website, BoM has myriad information about just how good they are at doing this stuff. For example, they note that the accuracy of their next day temperature forecasts in 2020–21 was 89.3% ...
Feb 16, 2023 · The BOM’s annual climate statement 2022 reported that the national mean temperature was 0.50C warmer than the 1961-1990 average, “making 2022 the equal-22nd-warmest year since reliable national records began, in 1910”. 2022 was the 22nd warmest year since reliable records began. Dr Gergis also pointed to the Sixth Assessment Report, from ...
Sep 11, 2024 · Meteorologists use computer programs called weather models to make forecasts. Since we can’t collect data from the future, models have to use estimates and assumptions to predict future weather. The atmosphere is changing all the time, so those estimates are less reliable the further you get into the future.
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Jan 2, 2024 · Recent criticism of the Bureau of Meteorology for failing to predict the recent spate of extreme weather is unfair, is ultimately counter-productive and misses far more serious failings of the BOM. Weather prediction is difficult. At best one can hope only to improve probabilities. And the weather hardest to predict is extreme events associated ...
