| contributor author | Kassianov, Evgueni | |
| contributor author | Long, Charles N. | |
| contributor author | Ovtchinnikov, Mikhail | |
| date accessioned | 2017-06-09T16:47:24Z | |
| date available | 2017-06-09T16:47:24Z | |
| date copyright | 2005/01/01 | |
| date issued | 2005 | |
| identifier issn | 0894-8763 | |
| identifier other | ams-74120.pdf | |
| identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4216310 | |
| description abstract | The relationship between hemispherical sky cover and nadir-view cloud fraction is examined by using both model simulations and surface observations. Monte Carlo simulations of ground-based hemispherical measurements are based on four-dimensional cloud fields produced by a large-eddy simulation model. Surface hemispherical observations are performed during the Atmospheric Radiation Measurement Program?s Cloudiness Intercomparison Intensive Operational Period. It is shown that (i) 15-min averages of frequently sampled (30 s) sky cover provide a reasonable estimation of the cloud fraction for limited fields of view and that (ii) this estimation can be substantially improved (for cumulus clouds) if additional information about the cloud aspect ratio is incorporated into the retrieval process. | |
| publisher | American Meteorological Society | |
| title | Cloud Sky Cover versus Cloud Fraction: Whole-Sky Simulations and Observations | |
| type | Journal Paper | |
| journal volume | 44 | |
| journal issue | 1 | |
| journal title | Journal of Applied Meteorology | |
| identifier doi | 10.1175/JAM-2184.1 | |
| journal fristpage | 86 | |
| journal lastpage | 98 | |
| tree | Journal of Applied Meteorology:;2005:;volume( 044 ):;issue: 001 | |
| contenttype | Fulltext | |
