A Comparative Cloud Climatology of New York State Based on Satellite Pictures and Conventional Surface Data for Selected Months of the Four Seasons PDF Download
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Author: James Paul Ormsby
Publisher:
ISBN:
Category : Clouds
Languages : en
Pages : 244
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Author: James Paul Ormsby
Publisher:
ISBN:
Category : Clouds
Languages : en
Pages : 244
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1368
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Author: John H. Conover
Publisher:
ISBN:
Category : Ceilometer
Languages : en
Pages : 32
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Book Description
Objective methods and their accuracies for deriving current and six-hour forecasts of cloud amount and ceiling from satellite data are presented. Data from the visible and IR window bands were tested to develop relationships. The IR data did not significantly improve the results. The visible data were carefully calibrated, navigated, and normalized for solar elevation and bidirectional reflectance. Cloud motions were also used for the six-hour forecasts. The data were reduced to values of average brightness and its standard deviation over 1/2 deg by 1/2 deg areas before analysis. RMSE of current cloud amounts (on a scale of 0 to 1) are about 0.25 and for six hours later about 0.35. The occurrence of a ceiling/no ceiling was specified correctly 80% and 70% of the time at zero and six hours, respectively. Various methods are shown for minimization of ceiling errors over different height ranges. In general, RMSE of specified and forecast ceilings range from 4000 to 6000 ft at low levels to 9000 to 10,000 ft at mid and high levels. (Author).
Author: Environmental Science Information Center. Library and Information Services Division
Publisher:
ISBN:
Category : Earth sciences
Languages : en
Pages : 438
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Author: Environmental Science Information Center. Library and Information Services Division
Publisher:
ISBN:
Category :
Languages : en
Pages : 444
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Author:
Publisher:
ISBN:
Category : Geophysics
Languages : en
Pages : 32
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Author: Environmental Science Information Center. Library and Information Services Division
Publisher:
ISBN:
Category : Earth sciences
Languages : en
Pages : 520
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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1042
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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 992
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Author: Sandra Brazel
Publisher:
ISBN:
Category : Solar energy
Languages : en
Pages : 126
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