geostrophic wind: meaning, definition, pronunciation and examples
C2Technical/scientific
Quick answer
What does “geostrophic wind” mean?
A theoretical wind that results from a balance between the pressure gradient force and the Coriolis force, blowing parallel to isobars in straight flow.
Audio
Pronunciation
Definition
Meaning and Definition
A theoretical wind that results from a balance between the pressure gradient force and the Coriolis force, blowing parallel to isobars in straight flow.
In practical meteorology, a simplified model of upper-level winds that neglects friction and centripetal acceleration, widely used in weather forecasting and synoptic analysis.
Dialectal Variation
British vs American Usage
Differences
None; identical in spelling, pronunciation, and technical usage across meteorological communities.
Connotations
Purely technical, no regional connotative differences.
Frequency
Equally low-frequency and restricted to meteorology, oceanography, and physics in both regions.
Grammar
How to Use “geostrophic wind” in a Sentence
The geostrophic wind [verbs: blows, results from, balances, increases].Vocabulary
Collocations
Examples
Examples of “geostrophic wind” in a Sentence
verb
British English
- The flow geostrophically adjusts.
American English
- The winds geostrophically adjust.
adverb
British English
- The wind blew geostrophically, parallel to the isobars.
American English
- The wind flows geostrophically, parallel to the contours.
adjective
British English
- The geostrophic approximation is valid aloft.
- We calculated the geostrophic flow.
American English
- The geostrophic approximation holds aloft.
- We estimated the geostrophic flow.
Usage
Meaning in Context
Business
Not used.
Academic
Core concept in meteorology, atmospheric physics, and physical geography courses.
Everyday
Virtually never used in everyday conversation.
Technical
Essential term in weather forecasting models, synoptic chart analysis, and scientific papers on atmospheric dynamics.
Vocabulary
Synonyms of “geostrophic wind”
Neutral
Weak
Vocabulary
Antonyms of “geostrophic wind”
Watch out
Common Mistakes When Using “geostrophic wind”
- Using 'geostrophic' as a standalone noun (e.g., 'the geostrophic is strong'). It is only an adjective modifying 'wind'.
- Pronouncing the 'g' as in 'goat' instead of as in 'gene' (/dʒ/).
- Assuming it describes a real, observable wind rather than a theoretical model.
FAQ
Frequently Asked Questions
No, it is a theoretical model. Real winds are influenced by additional factors like friction and curvature, making them 'ageostrophic'.
It is most accurate in straight-line flow well above the Earth's surface (typically above 1 km), where friction is negligible.
Geostrophic wind assumes straight flow, while gradient wind accounts for centripetal force in curved flow around highs and lows.
It is a foundational principle for understanding large-scale atmospheric motion and is crucial for initializing numerical weather prediction models.
A theoretical wind that results from a balance between the pressure gradient force and the Coriolis force, blowing parallel to isobars in straight flow.
Geostrophic wind is usually technical/scientific in register.
Geostrophic wind: in British English it is pronounced /ˌdʒiːə(ʊ)ˈstrɒfɪk wɪnd/, and in American English it is pronounced /ˌdʒioʊˈstrɑfɪk wɪnd/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: GEO (Earth) + STROPHE (turn) + IC → the wind that turns due to Earth's rotation, balanced between pressure push and Coriolis spin.
Conceptual Metaphor
BALANCE or EQUILIBRIUM (between two opposing 'forces').
Practice
Quiz
In which context would you most likely encounter the term 'geostrophic wind'?