Climates Multiple: Three Baselines, Two Tolerances, One Normal
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Peer-reviewed
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Repository DOI
Change log
Authors
Hulme, Mike https://orcid.org/0000-0002-1273-7662
Abstract
Today, Friday 1 January 2021, a new World Meteorological Organisation (WMO) climatological standard normal came into effect. The ‘present-day’ climate will now formally be represented by the meteorological statistics of the period 1991-2020, replacing those from 1961-1990. National Meteorological Agencies in member states are instructed to issue new standard normals for observing stations and for associated climatological products. Climate will ‘change’, one might say, in an instant; today, the world’s climate has ‘suddenly’ become nearly 0.5°C warmer. It is somewhat equivalent to re-setting Universal Time or adjusting the exact definition of a metre.
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Journal Title
Academia Letters
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Journal ISSN
2771-9359
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Academia.edu