How many years are in a climate normal period?
Scientists traditionally define a Climate Normal as an average over a recent 30-year period. Our most recent installment covers the period from 1981 to 2010.
What are the climatological standard normals?
Climatological normal or climate normal (CN) is a 30-year average of a weather variable for a given time of year. Climatological normals are used as an average or baseline to evaluate climate events and provide context for year-to-year variability.
How do you determine the normal climate?
A climate normal is computed by averaging the appropriate 30 values of the particular climate element obtained during the current 1971-2000 interval. � If changes in exposure or instruments have occurred, a correction is made to remove the non-climatic inhomogeneities.
What is climate change WMO?
Climate change refers to a statistically significant variation in either the mean state of the climate or in its variability, persisting for an extended period (typically decades or longer).
What is a normal weather?
Sticking with temperatures and precipitation for simplicity, the word “normal” would better be stated as “average” when discussing weather data. This means that over the 30-year climatological period (we use 1980-2010 right now), 60 degrees was the average or mean high temperature on that exact day each year.
What are climate normals used for?
Normals serve two purposes: a reference period for monitoring current weather and climate, and a good description of the expected climate at a location over the seasons. They provide a basis for determining whether today’s weather is warmer or colder, wetter or drier.
What base period do we currently use for climate normals?
The U.S. National Oceanic and Atmospheric Administration has updated the U.S. Climate Normals to the 1991-2020 baseline period to provide a most recent baseline for climate information and services to climate-sensitive sectors and a standard reference to compare variations in temperature, precipitation etc to the 30- …
What is climate normal temperature?
A “normal” is the 30-year average of a particular variable’s measurements, calculated for a uniform time period. Climate normals are derived from weather and climate observations captured by weather stations.
What does the WMO do?
As a specialized agency of the United Nations, WMO is dedicated to international cooperation and coordination on the state and behaviour of the Earth’s atmosphere, its interaction with the land and oceans, the weather and climate it produces, and the resulting distribution of water resources.
What is the meaning of WMO?
The World Meteorological Organization
The World Meteorological Organization (WMO) is an intergovernmental organization with a membership of 193 Member States and Territories. It originated from the International Meteorological Organization (IMO), the roots of which were planted at the 1873 Vienna International Meteorological Congress.