Relationship of Automated Weather Observations to Subjective Elements PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Relationship of Automated Weather Observations to Subjective Elements PDF full book. Access full book title Relationship of Automated Weather Observations to Subjective Elements by JT. Bradley. Download full books in PDF and EPUB format.
Author: JT. Bradley
Publisher:
ISBN:
Category : Air quality
Languages : en
Pages : 18
Get Book Here
Book Description
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.
Author: JT. Bradley
Publisher:
ISBN:
Category : Air quality
Languages : en
Pages : 18
Get Book Here
Book Description
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.
Author: H. Albert Brown
Publisher:
ISBN:
Category : Automatic meteorological stations
Languages : en
Pages : 38
Get Book Here
Book Description
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).
Author: H. Albert Brown
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 44
Get Book Here
Book Description
The determination of subjective weather observations through the use of an automated array of weather sensors coupled with a decision tree program was examined through analysis of data gathered at the AFGL Weather Test Facility at Otis AFB, Mass. This report describes the instruments used in the array, the response of the instruments to type of weather observed, and the decision tree programs. Preliminary results indicate that a computer-controlled weather sensor array has potential value in determining objectively those types of weather previously relegated to human responsibility.
Author: A. L. Morris
Publisher: ASTM International
ISBN:
Category : Air
Languages : en
Pages : 629
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Automated Surface Observing System
Languages : en
Pages : 108
Get Book Here
Book Description
Author: Robert G. Miller
Publisher:
ISBN:
Category : Meteorology in aeronautics
Languages : en
Pages : 250
Get Book Here
Book Description
Author: H. Albert Brown
Publisher:
ISBN:
Category : Automatic meteorological stations
Languages : en
Pages : 0
Get Book Here
Book Description
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)
Author:
Publisher:
ISBN:
Category : Forest fires
Languages : en
Pages : 276
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Aids to air navigation
Languages : en
Pages : 576
Get Book Here
Book Description
Author: United States. Congress. House. Committee on Ways and Means. Subcommittee on Oversight
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 528
Get Book Here
Book Description
