Physics
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3616802m&link_type=abstract
Geophysical Research Letters, Volume 36, Issue 16, CiteID L16802
Physics
6
Atmospheric Composition And Structure: Cloud/Radiation Interaction, Atmospheric Composition And Structure: Radiation: Transmission And Scattering, Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801, 4906), Atmospheric Composition And Structure: Chemical Kinetic And Photochemical Properties
Scientific paper
The ARM Shortwave Spectrometer (SWS) measures zenith radiance at 418 wavelengths between 350 and 2170 nm. Because of its 1-sec sampling resolution, the SWS provides a unique capability to study the transition zone between cloudy and clear sky areas. A spectral invariant behavior is found between ratios of zenith radiance spectra during the transition from cloudy to cloud-free. This behavior suggests that the spectral signature of the transition zone is a linear mixture between the two extremes (definitely cloudy and definitely clear). The weighting function of the linear mixture is a wavelength-independent characteristic of the transition zone. It is shown that the transition zone spectrum is fully determined by this function and zenith radiance spectra of clear and cloudy regions. An important result of these discoveries is that high temporal resolution radiance measurements in the clear-to-cloud transition zone can be well approximated by lower temporal resolution measurements plus linear interpolation.
Chiu J. C.
Knyazikhin Yuri
Marshak Alexander
Wiscombe Warren J.
No associations
LandOfFree
Spectral invariant behavior of zenith radiance around cloud edges observed by ARM SWS does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spectral invariant behavior of zenith radiance around cloud edges observed by ARM SWS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectral invariant behavior of zenith radiance around cloud edges observed by ARM SWS will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-833363