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	Geostrofisk vind	Kvasi-geostrofiska omegaekvationen	WRF-modellen
Ämnesområde	Meteorologi	Meteorologi	Meteorologi
Familj	Process / pipeline	Process / pipeline	Process / pipeline
Ursprungsår	1857	1970s	2000
Upphovsperson	Buys Ballot, Coriolis	Trenberth, Omaga	Skamarock and Klemp
Typ	Wind balance principle	Diagnostic equation for vertical motion	Atmospheric simulation system
Ursprungskälla	Holton, J. R. (2004). An Introduction to Dynamic Meteorology (4th ed.). Academic Press.	Holton, J. R. (2004). An Introduction to Dynamic Meteorology (4th ed.). Academic Press.	Skamarock, W. C., Klemp, J. B., Dudhia, J., et al. (2008). A Description of the Advanced Research WRF Version 3. NCAR Technical Note NCAR/TN-475+STR.
Alias	Geostrophic wind, Geostrophic balance, Geostrophic approximation	QG omega equation, Quasi-geostrophic dynamics, Vertical motion prediction	Weather Research and Forecasting, WRF, ARW, NMM
Närliggande	3	3	4
Sammanfattning	Geostrophic wind balance is a fundamental concept in meteorology that describes the balance between the pressure gradient force and the Coriolis force in large-scale atmospheric flow. When this balance is achieved, wind blows parallel to isobars without acceleration—a condition observed in the free atmosphere away from the equator and surface boundary layer.	The quasi-geostrophic (QG) omega equation is a fundamental diagnostic equation in synoptic meteorology that relates vertical motion (omega = dP/dt) to horizontal temperature and vorticity fields. It predicts where air rises and sinks based on the geostrophic flow structure without explicitly solving for vertical velocity.	The Weather Research and Forecasting (WRF) model is a mesoscale atmospheric simulation system used for weather forecasting, research, and climate applications. Developed cooperatively by NCAR, NOAA, and academic institutions, WRF became operational in 2004 and has become one of the most widely used atmospheric models worldwide.