Atmospheric science

Atmospheric science
Name	Atmospheric science
Caption	Layered structure of Earth's atmosphere
Field	Meteorology; Climatology; Aeronomy; Atmospheric chemistry
Notable institutions	National Aeronautics and Space Administration, National Oceanic and Atmospheric Administration, European Centre for Medium-Range Weather Forecasts, Met Office, Max Planck Institute for Meteorology
Notable people	Vilhelm Bjerknes, Carl-Gustaf Rossby, Lewis Fry Richardson, Jacob Bjerknes, Syukuro Manabe

Atmospheric science Atmospheric science is the interdisciplinary study of the gaseous envelope surrounding a planet, integrating theories and observations from meteorology, climatology, aeronomy, and atmospheric chemistry. It addresses processes from molecular-scale photochemistry to planetary-scale circulation, and connects work at institutions such as the National Aeronautics and Space Administration, European Space Agency, and WMO with pioneering scientists like Vilhelm Bjerknes and Syukuro Manabe.

Overview

Atmospheric science encompasses the physical, chemical, and dynamical behavior of planetary atmospheres, linking landmark developments from the Industrial Revolution to modern advances at facilities such as the Jet Propulsion Laboratory, NOAA laboratories, and the Scripps Institution of Oceanography. Historical milestones include numerical weather prediction from Lewis Fry Richardson and the conceptualization of planetary waves by Carl-Gustaf Rossby, while contemporary efforts involve climate modeling at the IPCC and observational campaigns led by NASA and the European Space Agency. Major research topics intersect with work on Greenhouse effect, Ozone layer recovery guided by the Montreal Protocol, and aerosol impacts studied by teams at the Max Planck Institute for Meteorology.

Composition and Structure of the Atmosphere

The atmospheric composition and vertical layering are described using measurements from platforms developed by NOAA, NASA, and agencies such as the Japan Meteorological Agency. Key constituents—Nitrogen, Oxygen, Argon, trace Carbon dioxide, Methane, and Ozone—are monitored by missions including Orbiting Carbon Observatory and programs at the National Center for Atmospheric Research. Structural divisions (troposphere, stratosphere, mesosphere, thermosphere, exosphere) are studied via sounding rockets launched from sites like Wallops Flight Facility and balloons coordinated by the World Meteorological Organization, with satellite remote sensing from TIROS and Aqua contributing to vertical profiling. Phenomena such as the jet stream, stratospheric ozone depletion, and thermospheric interactions with the magnetosphere are central to understanding atmospheric stratification.

Atmospheric Dynamics and Circulation

Atmospheric circulation theories build on concepts developed by Carl-Gustaf Rossby and observational syntheses by institutions such as ECMWF and the Met Office. Large-scale dynamics involve Hadley and Ferrel cells, the dynamics of the jet stream, storm tracks studied in the North Atlantic Oscillation and El Niño–Southern Oscillation, and tropical convection analyzed using data from TRMM and GPM. Turbulence and boundary layer processes draw on laboratory experiments from universities like Massachusetts Institute of Technology and field campaigns coordinated by NCAR and the UK Met Office, while numerical approaches are implemented in models such as WRF, GFS, and coupled models used in CMIP.

Atmospheric Thermodynamics and Radiation

Radiative transfer and thermodynamic processes are central to energy balance work performed by researchers at Columbia University and Princeton University and by agencies including NASA and NOAA. Topics include radiative forcing from greenhouse gases like Carbon dioxide and Methane, cloud-radiation interactions examined in clouds measured by CloudSat and CALIPSO, and lapse rate theory informed by classical studies at institutions such as the Royal Society. Radiative-convective equilibrium, moist thermodynamics, and non-local thermodynamic equilibrium processes in the upper atmosphere tie into satellite remote sensing missions like CERES and laboratory spectroscopy from groups at the National Institute of Standards and Technology.

Weather and Climate Processes

Weather systems and climate variability are explored through observational networks maintained by the World Meteorological Organization and research synthesized in reports from the IPCC. Processes include synoptic-scale cyclones and anticyclones studied using reanalysis products from ECMWF and NCEP, mesoscale phenomena investigated with instruments from the NOAA Hurricane Research Division and the European Centre for Medium-Range Weather Forecasts, and long-term climate change assessed in paleoclimate studies at the Institute of Arctic and Alpine Research and PAGES. Extremes such as heatwaves, droughts, and tropical cyclones are analyzed alongside attribution studies developed by groups at Lawrence Berkeley National Laboratory and Lamont–Doherty Earth Observatory.

Observational Methods and Remote Sensing

Observational techniques range from in situ sampling by aircraft operated by NASA and NOAA to ground-based networks such as the Global Atmosphere Watch and radiosonde launches coordinated via national meteorological services like the Met Office. Remote sensing employs satellites developed by ESA, JAXA, and Roscosmos with sensors including hyperspectral sounders on Aqua and microwave imagers from TRMM; lidar and radar networks maintained by institutions such as NCAR and the National Center for Atmospheric Research provide vertical structure data. Data assimilation frameworks created at ECMWF and NASA combine observations with models like GFS and WRF for reanalysis products used in research and forecasting.

Applications and Environmental Impacts

Applications span weather forecasting by national services like NOAA and the Met Office, air quality management informed by research at Environmental Protection Agency and European Environment Agency, and climate policy support provided to the United Nations Framework Convention on Climate Change and the IPCC. Environmental impacts involve anthropogenic emission studies tied to the Montreal Protocol and Paris Agreement, ecosystem responses monitored by the National Science Foundation and USGS, and socio-economic risk assessments developed in collaboration with organizations such as the World Bank and UNEP. Technological applications include aviation meteorology supported by ICAO, renewable energy resource assessment by research centers at NREL, and planetary atmosphere studies conducted by NASA missions to Mars and Venus.

Category:Atmospheric sciences