Meteorology

Meteorology
NASA · Public domain · source
Name	Meteorology
Field	Atmospheric science
Notable people	Luke Howard, Vilhelm Bjerknes, Cecilia Payne-Gaposchkin, Carl-Gustaf Rossby, Edward Lorenz, John von Neumann, Sverre Petterssen, Herbert Riehl, Jule Gregory Charney, Joseph Smagorinsky, Jacob Bjerknes, Richard Reed, Tor Bergeron, Lewis Fry Richardson, William Ferrel, George Hadley, Francis Beaufort, Aristotle, Edmond Halley, Benjamin Franklin, Gaspard-Gustave Coriolis, Vilhelm Bjerknes

Meteorology Meteorology is the scientific study of the atmosphere, its physical and chemical behavior, and the processes that produce weather and climate. It integrates observations, theory, and models to analyze atmospheric phenomena from turbulence and cloud microphysics to planetary-scale circulation. Practitioners apply methods from physics, mathematics, and engineering within operational centers, research institutes, and universities.

Overview

Meteorology emerged from early inquiry by figures such as Aristotle, Benjamin Franklin, and Edmond Halley and matured through contributions by Francis Beaufort and Luke Howard; modern development accelerated with the founding of institutions like the Royal Meteorological Society and the U.S. National Weather Service. Foundational advances were driven by the work of Vilhelm Bjerknes, Lewis Fry Richardson, and Carl-Gustaf Rossby and later by numerical pioneers including John von Neumann and Edward Lorenz. Operational networks led by agencies such as the World Meteorological Organization, European Centre for Medium-Range Weather Forecasts, and National Oceanic and Atmospheric Administration coordinate global observing systems and forecasting services. The field spans specialized subfields exemplified by cloud physics research at centers like NCAR and boundary-layer studies at universities such as MIT and University of Reading.

Atmospheric Structure and Processes

The atmosphere is stratified into layers—troposphere, stratosphere, mesosphere, and thermosphere—each characterized in studies at facilities like Scripps Institution of Oceanography and Max Planck Institute for Meteorology. Dynamics are governed by conservation laws first formalized in fluid dynamics by George Gabriel Stokes and by rotational effects described by Gaspard-Gustave Coriolis, while wave phenomena were elucidated by Carl-Gustaf Rossby and Vilhelm Bjerknes. Thermodynamic processes such as moist convection, latent heat release, and radiative transfer were quantified in work by Cecilia Payne-Gaposchkin and explored in radiative models at institutions like NOAA laboratories. Cloud microphysics research traces to Tor Bergeron and influenced parameterizations adopted in schemes developed by Jule Gregory Charney and Joseph Smagorinsky. Boundary-layer turbulence, studied in projects like the GARP Atlantic Tropical Experiment, controls surface fluxes and pollutant dispersion modeled in collaborations with Massachusetts Institute of Technology and Imperial College London.

Observational Methods and Instruments

Modern observing systems combine in situ measurements and remote sensing deployed by agencies such as European Space Agency, NASA, and Japan Meteorological Agency. Surface networks originated with instruments standardized by figures like Francis Beaufort and now include automated weather stations operated by national services including Met Office and Météo-France. Upper-air observations employ radiosondes and dropsondes developed through programs by NOAA and Naval Research Laboratory; aircraft reconnaissance in basins like the Atlantic hurricane basin is coordinated with National Hurricane Center operations. Remote sensing from satellites—initiatives of NOAA, EUMETSAT, and JAXA—uses radiometers, scatterometers, and lidar systems, while radar networks pioneered by John von Neumann-era research provide reflectivity and Doppler velocity used by centers such as Storm Prediction Center. Oceanographic platforms including ARGO floats, coordinated through International Oceanographic Commission, supply sea-surface data critical for coupled studies.

Weather Prediction and Numerical Models

Forecasting advanced from synoptic charts developed in the 19th century by Vilhelm Bjerknes to dynamical prediction using numerical weather prediction (NWP) initiated by Lewis Fry Richardson and operationalized with computers championed by John von Neumann. Major NWP centers—ECMWF, UK Met Office, and NOAA's National Weather Service—run global and regional models built on equations of motion, thermodynamics, and mass continuity solved with methods from applied mathematics as in work at Courant Institute. Ensemble forecasting, advanced following insights by Edward Lorenz and operationalized in systems at ECMWF and Met Office, quantifies uncertainty using perturbed initial conditions and stochastic parameterizations by researchers including Joseph Smagorinsky. Data assimilation techniques such as 4D-Var and ensemble Kalman filters were developed in collaborations among NCAR, ECMWF, and academic groups including University of Washington.

Severe Weather and Hazards

Research on convective storms, tornadoes, and tropical cyclones links field programs like TEXAS deployments, the Doppler On Wheels projects, and campaigns organized by NOAA and NCAR. Forecasters at centers including the Storm Prediction Center, National Hurricane Center, and regional services issue watches and warnings informed by mesoscale analyses rooted in work by Sverre Petterssen and Richard Reed. Hazard mitigation draws on historical case studies such as Great Galveston Hurricane of 1900 and operational frameworks established after events like Hurricane Katrina; interdisciplinary collaboration involves organizations such as the FEMA and humanitarian partners like International Red Cross. Advances in radar meteorology, satellite nowcasting, and rapid-refresh modeling reduce impacts from flash floods, derechos, and hailstorms cataloged in databases maintained by research groups at Oklahoma University and Penn State University.

Climate Interactions and Synoptic Scale Dynamics

Large-scale circulation features—Hadley circulation described by George Hadley, jet streams characterized by Carl-Gustaf Rossby, and annular modes identified in paleoseasonal studies—link weather variability to climate signals studied at IPCC and climate centers such as Hadley Centre. Teleconnections including the El Niño–Southern Oscillation and the North Atlantic Oscillation modulate storm tracks and precipitation patterns; their representation in coupled atmosphere–ocean models was advanced by groups at GFDL and NOAA's Geophysical Fluid Dynamics Laboratory. Synoptic-scale analysis techniques, implemented in operational suites at ECMWF and taught in courses at University of Cambridge, provide diagnostics for frontogenesis, baroclinic instability, and cyclone development grounded in the dynamical framework of Vilhelm Bjerknes and later formalized by Jule Gregory Charney.

Category:Atmospheric sciences