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dc.contributor.authorWendisch, Manfred
dc.contributor.authorPilewskie, Peter
dc.contributor.authorJakel, Evelyn
dc.contributor.authorSchmidt, Sebastian
dc.contributor.authorPommier, John
dc.contributor.authorHoward, Steve
dc.contributor.authorJonsson, Haflidi H.
dc.contributor.authorGuan, Hong
dc.contributor.authorSchroder, Marc
dc.contributor.authorMayer, Bernhard
dc.date2005
dc.date.accessioned2014-06-11T23:18:31Z
dc.date.available2014-06-11T23:18:31Z
dc.date.issued2005
dc.identifier.urihttp://hdl.handle.net/10945/42214
dc.descriptionJournal of Geophysical Research, Vol. 109 (D08203), 4633en_US
dc.descriptionThe article of record as published may be located at http://dx.doi.org/ 10.1029/2003JD004392.en_US
dc.description.abstractAirborne measurements of the ratio of spectral upward and downward irradiances (so-called spectral albedo) are used to derive the areal spectral surface albedo in the wavelength range from 330 to 1670 nm. The data were collected over different sea and land surfaces in cloudless atmospheric conditions during three field campaigns. Measurements from the Albedometer (developed at IfT) and the NASA Solar Spectral Flux Radiometer (SSFR) are employed. Spectral radiative transfer calculations show that atmospheric scattering and absorption within the layer beneath the flight level considerably contribute to the airborne albedo measurements reported here, even for low flight altitudes (0.2–0.5 km). To remove this atmospheric masking, a nonlinear extrapolation of the airborne albedo measurements to the ground is performed. The nonlinearity is due to the vertically inhomogeneous distribution of the particle microphysical properties. This fact underlines the importance of aerosol profile measurements for the proper correction of atmospheric masking. Examples of the extrapolated areal spectral surface albedos are discussed in terms of their solar zenith angle dependence, their small-scale, and general variability. Finally, typical areal spectral surface albedos for different sea and land surfaces, as derived from the three measurement campaigns, are supplied in parameterized form for use in radiative transfer applications.en_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleAirborne Measurements of Areal Spectral Surface Albedo over Different Sea and Land Surfacesen_US
dc.contributor.departmentCenter for Interdisciplinary Remotely Piloted Aircraft Studies (CIRPAS)
dc.subject.authorareal spectral surface albedoen_US
dc.subject.authorspectral radiative transferen_US
dc.subject.authoraerosol particlesen_US


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