ROSSBY Meaning and
Definition
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Rossby is a term used in meteorology to refer to long, meandering waves in the earth's atmosphere that occur in the planetary-scale flow. These waves were named after the Swedish meteorologist Carl-Gustaf Rossby, who first described them in the early 20th century. Rossby waves are a type of atmospheric wave that play a crucial role in weather patterns and climate systems.
Rossby waves are formed due to the variation in the Coriolis effect, which is caused by the earth's rotation. They develop in the mid-latitudes and are most prominent in the upper levels of the atmosphere, particularly within the jet streams. These waves have large wavelengths and generally move from west to east, but with significant north-south meandering.
The occurrence and behavior of Rossby waves can significantly influence weather patterns, such as the formation and persistence of high-pressure systems, low-pressure systems, and atmospheric disturbances. They are responsible for the creation of both ridges and troughs in the atmospheric flow, leading to the development of weather fronts, storm systems, and various types of atmospheric phenomena.
Understanding Rossby waves and their characteristics is important for weather forecasting, climate research, and the study of atmospheric dynamics. These waves can impact the movement of air masses, ocean currents, and even influence global climate patterns. The study of Rossby waves helps scientists comprehend the complex interactions between the atmosphere, oceans, and land surface, contributing to advancements in meteorology and climate science.
Etymology of ROSSBY
The word "Rossby" is derived from the name of Carl-Gustaf Rossby, a Swedish-American meteorologist who made significant contributions to the field of atmospheric sciences. Carl-Gustaf Rossby was born in Stockholm, Sweden, in 1898 and later became a professor at the Massachusetts Institute of Technology (MIT) in the United States.
Rossby is best known for his work on the large-scale motions of the Earth's atmosphere, specifically in relation to what is now known as Rossby waves. These waves are meanders in the atmospheric flow that have a profound impact on weather patterns and can influence long-term climate variability.
To honor Rossby's contributions, his name has been associated with these atmospheric planetary waves, and the term "Rossby wave" was coined. As a result, the term "Rossby" is often used to describe various atmospheric phenomena or patterns that are related to or influenced by Rossby waves.
