Atmospheric Measurements

Harvard-Smithsonian Center for Astrophysics


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    This research applies atomic and molecular physics (spectroscopy, light scattering, and chemical reactivity) to measurements of the Earth's atmosphere. The issues that are addressed include:

    (1) the determination of the details of the photochemistry of the stratospheric ozone layer. This includes effects from chlorofluorocarbons, halons, and nitrogen oxides from commercial aircraft;

    (2) The composition of the lower atmosphere (the troposphere) and its dynamics and evolution. This encompasses the issue of the greenhouse effect and of atmospheric radiation balance in general;

    (3) pollution in the lowest part of the atmosphere, the planetary boundary layer - where we live.

    Our research over recent years has included measurements from the ground, high-altitude scientific balloons, airplanes, and Earth satellites, as well as basic laboratory spectroscopic measurements of the properties of atmospheric molecules.


    The work emphasized at this site is from satellite-based measurements of the atmosphere, where we have developed capabilities for making a number of key measurements of pollutants, with the eventual goal of contributing to the ability to monitor pollution continuously and globally from space.


    We work closely with the Atmospheric Sciences at Harvard.












     Solar Spectrum

    SAO2010 Solar Irradiance Reference Spectrum

     GOME-1, OMI, and GOME-2 Ozone Profiles and Tropospheric Ozone
    GOME (Data available from July 1995-June 2003)


    OMI (Data available from October 2004-June 2009)


     Tropospheric Ozone Movies

    OMI Mean Tropospheric Ozone (Jul. 2006 - Sep. 2006)

    Sep. 1996 - Nov. 1997, with GEOS-CHEM comparison

    July 1995 - June 2003


    The World According to GOME

    Atmospheric Measurements -Harvard-Smithsonian Center for Astrophysics