Normals: Period averages computed for a uniform and relatively long period comprising at least three consecutive ten-year periods (Technical Regulations).

Climatological Standard Normals (1991–2020). The WMO collected submissions of climatological normals from 141 countries and territories in the six WMO regions*.

15 авг. 2023 г. · The US National Centers for Environmental Information (NCEI) have just issued the new WMO Climatological Standard Normals 1991-2020 to replace ...

Historical practices regarding climate normals, as described in the Guide to Climatological. Practices (WMO, 2011), the Technical Regulations (WMO, 2016b) and ...

World Meteorological Organization (WMO) requires member states to produce 30-year climate normals every 10 years and provides more guidelines within the WMO ...

Thirty-year averages of meteorological parameters such as temperature, precipitation and sunshine are known as climate normals.

Climatological normal or climate normal (CN) is a 30-year average of a weather variable for a given time of year.

The WMO recommends that the member states shall update their climate normals every decade with the most recent 30-year period, finishing in a year ending with 0 ...

For operational climate monitoring,. WMO guidance on the calculation of standard climatological normals recommends a rolling 30- year period, updated every 10 ...

The Normals are calculated for a uniform 30-year period, and consist of monthly averages and statistics of temperature, precipitation, and other climatological ...