edu.ucar.opensky::articles:6784 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T15:38:50.048292 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7v69jtr Aerosol indirect effects as a function of cloud top pressure 2007-03-16T00:00:00Z publication https://n2t.org/ark:/85065/d7v69jtr https://doi.org/10.1029/2006JD007383 Massie, Steven T. author Heymsfield, Andrew J. author Schmitt, Carl G. author Müeller, D. author Seifert, P. author UCAR/NCAR - Library publisher Aerosol indirect effects are quantified as a function of cloud top pressure over India and the Indian Ocean in February and March 2003-2005 from analyses of moderate resolution imaging spectroradiometer (MODIS) radiances, reflectance, and aerosol optical depth data. We test the hypothesis that aerosol indirect effects are present throughout the troposphere. Theoretical cloud reflectance values are calculated by application of the discrete-ordinate DISORT multiple scattering program, as a function of cloud top pressure, aerosol optical depth, and cloud phase (i.e., liquid droplets and cloud ice), and are compared to MODIS cloud reflectance data at 1.38 and 3.75 μm. Aerosol indirect effects are apparent for pressure levels associated with liquid droplets; that is, derivatives of cloud reflectance with respect to aerosol optical depth at 3.75 μm for liquid droplets over land and ocean are larger than corresponding derivatives associated with theoretical aerosol direct effects. Aerosol indirect effects are not apparent for pressure levels associated with tropospheric ice crystals. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2007 American Geophysical Union. None eng geoscientificInformation