Short-term Variability of Atmospheric Extinction During the Night, Under Clear-Sky Conditions, Investigated by Broadband Stellar Photometry
| dc.contributor.advisor | Ellingson, Robert G. | en_US |
| dc.contributor.author | Musat, Ileana Cristina | en_US |
| dc.contributor.department | Meteorology | en_US |
| dc.contributor.publisher | Digital Repository at the University of Maryland | en_US |
| dc.contributor.publisher | University of Maryland (College Park, Md.) | en_US |
| dc.date.accessioned | 2004-10-09T05:21:17Z | |
| dc.date.available | 2004-10-09T05:21:17Z | |
| dc.date.issued | 2004-09-02 | en_US |
| dc.description.abstract | This is a study about the possibility of determining the aerosol optical depth by using star broadband observations from a whole sky imager. The main difficulty in such measurements consists of accurately separating the star flux value from the non-stellar diffuse light, which is overwhelmingly present in the whole sky imagery. A correction method to solve this problem is found and the monochromatic extinction at the ground due to aerosols is extracted from heterochromatic measurements. A form of closure is achieved by comparison with simultaneous or temporally close measurements with other instruments. The accuracy and precision of the method are assessed: the total error is a combination of random error of measurements and systematic error of calibration and model and is between 2.6 and 3% rms. | en_US |
| dc.format.extent | 6111620 bytes | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.uri | http://hdl.handle.net/1903/1897 | |
| dc.language.iso | en_US | |
| dc.subject.pqcontrolled | Physics, Atmospheric Science | en_US |
| dc.title | Short-term Variability of Atmospheric Extinction During the Night, Under Clear-Sky Conditions, Investigated by Broadband Stellar Photometry | en_US |
| dc.type | Dissertation | en_US |
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