Published today 09:36
Today’s climate change gives more frequently abnormal weather. But the statistics comparable periods do not follow. Now we want international Meteorologist Organization WMO update weather statistics, writes Swedish radio.
Today’s climate change gives more frequently abnormal weather. But the statistics comparable periods do not follow. Now we want international Meteorologist Organization WMO update weather statistics, writes Swedish radio.
The period used for weather statistics today is between 1961 and 1990, but during the 30 years it was a whole lot cooler in the Nordic countries than the next 30 years. 1960s was characterized by the snowy and cold winters and summers were cool and humid in Northwest Europe. Although it is in the 70s and 80s were many mild winters are colder than the period 30-year period from 1990.
The question meteorologists now ask themselves is whether to retain the statistical yardstick 1961-1990 for the weather, or update statistics for the period 1981-2010 so that it corresponds more closely to what the weather actually is, writes sr.se.
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But changing a comparative weather period is not easy but can mean that all deviations, rainy winters, extreme drought, with summer thunderstorms and forest fires, eventually becomes normal statistically.
– I been thinking a little bit about that. Especially now during the last ten twenty years since it has been so very many records. It might get a little more accurate picture of the climate that we are experiencing in all cases and has experienced in the last twenty years, says Erling Brännström is a meteorologist at SMHI in Malmö to sr.se.
No decision on a change of statistical period is still not understood by WMO.
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