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JOURNAL OF GEOPHYSICAL RESEARCH,
VOL. 110,
D10S15,
16 PP., 2005
doi:10.1029/2004JD004695
A global view of aerosols from merged transport models, satellite, and ground observations
Department of Meteorology, University of Maryland, College Park, Maryland, USA
Department of Meteorology, University of Maryland, College Park, Maryland, USA
Biospheric Sciences Branch, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA
Growing recognition of the importance of natural and anthropogenic aerosols in climate research led to numerous efforts to obtain information on aerosols based on model simulations, satellite remote sensing, and ground observations. This study describes an approach to combine information from independent sources that complement each other in their capabilities to achieve a global characterization of monthly mean clear-sky daytime aerosol optical depth. The following sources of information have been used: simulations from the Global Ozone Chemistry Aerosol Radiation and Transport (GOCART) model; retrievals from the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument on the Terra satellite; and measurements from the Aerosol Robotic Network (AERONET). Leading empirical orthogonal functions (EOFs) are used to represent the significant variation signals from model and satellite results; the EOFs are fitted to the ground observations to propagate the AERONET information at a global scale. The methodology is implemented with a 2-year time record when collocated data from all three sources are available.
Received 25 February 2004; accepted 12 January 2005; published 26 March 2005.
Citation: (2005), A global view of aerosols from merged transport models, satellite, and ground observations, J. Geophys. Res., 110, D10S15, doi:10.1029/2004JD004695.
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