Automation Of Visual Weather Observations
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Automation Of Visual Weather Observations
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Author : H. Albert Brown
language : en
Publisher:
Release Date : 1980
Automation Of Visual Weather Observations written by H. Albert Brown and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Automatic meteorological stations categories.
A study was performed to determine the feasibility of objectively and automatically determining two key components of an aviation weather observation: present weather and obstruction to vision. The automated system utilized was an instrumented tower and surface array of sensors located at the AFGL Weather Test Facility (WTF), Otis AFB, Massachusetts. The objective method consisted of a decision-tree program (AUTO) based on several uniquely different responses by these weather sensors to the same weather phenomena and on discrimination techniques using tower and surface instrument comparison. The ability of AUTO to monitor rapidly changing weather events and to discriminate different types of weather is demonstrated through selected hourly periods of observations taken at 1-min intervals. Hourly observations generated over a 14-month period, March 1978 through April 1979, are compared with FAA observations to determine the effectiveness of AUTO. Major areas of agreement were found in the discrimination of fog, haze, snow, rain, and no weather. Final results show that the FAA observations of the existence and non-existence of obstructions to vision and present weather were duplicated in 82 and 86% of the cases. Thus the acquisition of real weather for an aviation weather observation, a duty presently performed by a human observer, is obtainable through an objective decision-tree program using an automated sensor array. (Author).
Automation Of Visual Weather Observations
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Author : H. Albert Brown
language : en
Publisher:
Release Date : 1980
Automation Of Visual Weather Observations written by H. Albert Brown and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Automatic meteorological stations categories.
A study was performed to determine the feasibility of objectively and automatically determining two key components of an aviation weather observation: present weather and obstruction to vision. The automated system utilized was an instrumented tower and surface array of sensors located at the AFGL Weather Test Facility (WTF), Otis AFB, Massachusetts. The objective method consisted of a decision-tree program (AUTO) based on several uniquely different responses by these weather sensors to the same weather phenomena and on discrimination techniques using tower and surface instrument comparison. The ability of AUTO to monitor rapidly changing weather events and to discriminate different types of weather is demonstrated through selected hourly periods of observations taken at 1-min intervals. Hourly observations generated over a 14-month period, March 1978 through April 1979, are compared with FAA observations to determine the effectiveness of AUTO. Major areas of agreement were found in the discrimination of fog, haze, snow, rain, and no weather. Final results show that the FAA observations of the existence and non-existence of obstructions to vision and present weather were duplicated in 82 and 86% of the cases. Thus the acquisition of real weather for an aviation weather observation, a duty presently performed by a human observer, is obtainable through an objective decision-tree program using an automated sensor array. (Author)
Investigation Of Sensors And Techniques To Automate Weather Observations
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Author : Eugene Y. Moroz
language : en
Publisher:
Release Date : 1977
Investigation Of Sensors And Techniques To Automate Weather Observations written by Eugene Y. Moroz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Clouds categories.
Several sensors and techniques currently being investigated at the Air Force Geophysics Laboratory as part of its program to automate the observation of weather parameters are described. Included are a lidar cloud-height measuring system, a laser weather identifier, a decision tree approach for determination of present weather, a lidar slant visual range measuring system, and a tower mounted visibility meter approach for determination of slant visual range. (Author)
Relationship Of Automated Weather Observations To Subjective Elements
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Author : JT. Bradley
language : en
Publisher:
Release Date : 1978
Relationship Of Automated Weather Observations To Subjective Elements written by JT. Bradley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Air quality categories.
Traditionally, surface weather observations have been made by human observers. It has been their difficult task to estimate subjective elements such as sky cover (in tenths) and the heights of clouds (often to the nearest 100 ft). Automation has moved slowly to replace subjective methods in the field and, even then, usually only in special areas such as runway visual range (RVR) and runway visibility (RVV). Recent work has demonstrated that automated observations of other subjective elements are feasible and are already operational at two points in the United States.
Survey Of Sensors For Automated Tactical Weather Observations
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Author : Eugene Y. Moroz
language : en
Publisher:
Release Date : 1980
Survey Of Sensors For Automated Tactical Weather Observations written by Eugene Y. Moroz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Automatic meteorological stations categories.
Current requirements for tactical weather systems at fixed and bare- base airfields necessitate an upgrading of meteorological sensor capability, system automation, and a range of data dissemination options. A program has been initiated at the Air Force Geophysics Laboratory to implement these objectives. In the first phase of this program, a survey of the state-of-the-art has been made for the identification of equipment suitable for such a system. Government inventoried instrumentation, as well as those from commercial sources, have been considered. Criteria to be used in sensor selection will include both accuracy and the ability to operate trouble free over a wide range of environmental extremes. When appropriate, in-house programs will be initiated to correct deficiencies. During the coming year, field tests and intercomparisons will be made of selected sensors. Instrumentation will eventually be integrated into an automated system with local and/or remote display of weather elements tailored to user requirements.
Very Short Range Statistical Forecasting Of Automated Weather Observations
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Author : Robert G. Miller
language : en
Publisher:
Release Date : 1987
Very Short Range Statistical Forecasting Of Automated Weather Observations written by Robert G. Miller and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Meteorology in aeronautics categories.
Key To Asos Automated Surface Observing System Weather Observation
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Author :
language : en
Publisher:
Release Date : 1993
Key To Asos Automated Surface Observing System Weather Observation written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Meteorological stations, Radar categories.
Investigation Of Sensors And Techniques To Automate Weather Observations
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Author : Eugene Y. Moroz
language : en
Publisher:
Release Date : 1977
Investigation Of Sensors And Techniques To Automate Weather Observations written by Eugene Y. Moroz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Clouds categories.
Several sensors and techniques currently being investigated at the Air Force Geophysics Laboratory as part of its program to automate the observation of weather parameters are described. Included are a lidar cloud-height measuring system, a laser weather identifier, a decision tree approach for determination of present weather, a lidar slant visual range measuring system, and a tower mounted visibility meter approach for determination of slant visual range. (Author).
Survey Of Sensors For Automated Tactical Weather Observations
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Author : Eugene Y. Moroz
language : en
Publisher:
Release Date : 1980
Survey Of Sensors For Automated Tactical Weather Observations written by Eugene Y. Moroz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Automatic meteorological stations categories.
Current requirements for tactical weather systems at fixed and bare- base airfields necessitate an upgrading of meteorological sensor capability, system automation, and a range of data dissemination options. A program has been initiated at the Air Force Geophysics Laboratory to implement these objectives. In the first phase of this program, a survey of the state-of-the-art has been made for the identification of equipment suitable for such a system. Government inventoried instrumentation, as well as those from commercial sources, have been considered. Criteria to be used in sensor selection will include both accuracy and the ability to operate trouble free over a wide range of environmental extremes. When appropriate, in-house programs will be initiated to correct deficiencies. During the coming year, field tests and intercomparisons will be made of selected sensors. Instrumentation will eventually be integrated into an automated system with local and/or remote display of weather elements tailored to user requirements.
Automated Surface Observing System
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Author :
language : en
Publisher:
Release Date : 1998
Automated Surface Observing System written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Automated Surface Observing System categories.