Index Catalog // ScholarsArchive@OSU

Creator:: Segrin, Matthew S.
Abstract:: 1-km MODIS observations of ship tracks off the west coast of the U.S. are used to characterize changes in cloud visible optical depths, cloud droplet radii, cloud cover fraction, and column cloud liquid water amount as low-level marine clouds respond to particle pollution from underlying ships. This study re-examines the...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Matthew S. Segrin for the degree

Creator:: Christensen, Matthew W.
Abstract:: One kilometer Moderate Resolution Imaging Spectroradiometer (MODIS) observations for Terra (morning) and Aqua (afternoon) satellites were used to follow the morning to afternoon evolution of marine stratocumulus clouds that were affected by ship stack exhaust. The observations covered the summer months of 2002-2003 and August 2007 for marine layers off...
Resource Type:: Masters Thesis
Full Text:: water path (Platnick et al., 2000; Coakley and Walsh, 2002; and Segrin et al., 2007). Clearly the

Creator:: Walsh, Christopher D.
Abstract:: Cloud reflectivity is a function of cloud liquid water content and droplet number concentration. Since cloud droplets form around pre-existing aerosol particles, cloud droplet number concentration depends on the availability of particles that can serve as cloud condensation nuclei. Given constant liquid water amount, increased availability of cloud condensation nuclei...
Resource Type:: Masters Thesis
Full Text:: of hydrophilic aerosol (Platnick and Twomey 1993). Ship tracks are common and easily identified in

Creator:: Chang, Fu-Lung
Abstract:: A radiation model was developed for retrieving cloud visible optical depth, droplet effective radius, and cloud top emission temperature using AVHRR satellite observations at 0.63, 3.7, and 11 μm. The model was used to determine the sensitivity of the retrieved properties to various approximations often employed in such retrievals. Droplet...
Resource Type:: Dissertation
Full Text:: , Norman Loeb, Xijian Lin, Steve Platnick, and Mr. Nathaniel Plant for their helpful discussions during

Creator:: Boeke, Robyn C.
Abstract:: The 2007 Intergovernmental Panel on Climate Change assessment established that the effect of clouds on climate contributes the largest uncertainty in predicting the future climate. Satellite observations provide an opportunity for learning about the behavior of clouds. This thesis seeks to assess the accuracy of cloud properties retrieved from multispectral...
Resource Type:: Masters Thesis
Full Text:: assumption that pixels are overcast is frequently violated (Platnick et al. 2003, Coakley et al. 2005

Creator:: Hayes, Christopher R.
Abstract:: Adiabatic parcel models suggest specific relationships between cloud thickness and cloud properties. Such relationships govern cloud radiative forcing and thus cloud feedbacks in the climate system. Current remote sensing techniques work well at measuring these properties in low-level cloud systems that are overcast. Significant biases exist, however, when measuring cloud...
Resource Type:: Masters Thesis
Full Text:: (Platnick et al. 2003). Terra has a descending orbit with an equatorial crossing time of 1030 local solar

Creator:: Schuetz, Andrea M.
Abstract:: The operational processing of MODIS imagery to produce the MOD06 cloud product is based on the assumption that cloudy 1-km pixels are overcast. This assumption is examined using a partly cloudy pixel retrieval scheme, which allows for fractional cloud cover within the 1-km pixels. Cloud flags attached to 250-m MODIS...
Resource Type:: Masters Thesis
Full Text:: in the infrared (Platnick et al., 2003). Analyses in this study use MODIS data from the morning

Creator:: Luderer, Gunnar
Abstract:: The atmospheric radiative transfer model MOCARAT was developed and is presented in this thesis. MOCARAT employs a Monte Carlo Technique for the accurate modeling of band radiances and reflectances in an atmospheric system with a ruffled ocean surface as a lower boundary. The atmospheric radiative transfer is modeled with consideration...
Resource Type:: Masters Thesis
Full Text:: random trial through the model atmosphere.............................. 50 4.2 A new coordinate frame S

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