Use of the AN/FPS-77 for Quantitative Weather Radar Measurements
Use of the AN/FPS-77 for Quantitative Weather Radar Measurements

Author: Wilbur H. Paulsen

Publisher:

Published: 1968

Total Pages: 20

ISBN-13:

DOWNLOAD EBOOK

A review is made of the assumptions that must be made in using a weather radar set for quantitative measurements of weather echoes. A simplified derivation is provided showing the relationship between the purely meteorological 'radar reflectivity factor' Z and the radar received power for any weather radar set when the assumptions are fulfilled. A nomogram furnished for use with the AN/FPS-77 enables a simple conversion of receiver power to Z values. (Author).

Use of the AN/FPS-77 for Quantitative Weather Radar Measurements
Use of the AN/FPS-77 for Quantitative Weather Radar Measurements

Author: Wilbur H. Paulsen

Publisher:

Published: 1968

Total Pages: 0

ISBN-13:

DOWNLOAD EBOOK

A review is made of the assumptions that must be made in using a weather radar set for quantitative measurements of weather echoes. A simplified derivation is provided showing the relationship between the purely meteorological 'radar reflectivity factor' Z and the radar received power for any weather radar set when the assumptions are fulfilled. A nomogram furnished for use with the AN/FPS-77 enables a simple conversion of receiver power to Z values. (Author)

Understanding and Using FPS-77 Radar Data
Understanding and Using FPS-77 Radar Data

Author: Charles Melson

Publisher:

Published: 1971

Total Pages: 21

ISBN-13:

DOWNLOAD EBOOK

The note discusses the AN/FPS-77 weather radar, its scopes, controls, and the radar operating procedures used at Hahn AB, Germany. The RAMET code is considered as well as the use of scope photography. The purpose of the note is to inform using agencies of the uses and limitations of the information received from a radar station. (Author).

Measurements of Visibility and Radar Reflectivity During Snowstorms in the AFGL Mesonet
Measurements of Visibility and Radar Reflectivity During Snowstorms in the AFGL Mesonet

Author: H. Stuart Muench

Publisher:

Published: 1977

Total Pages: 40

ISBN-13:

DOWNLOAD EBOOK

Field experiments were conducted with the AFGL Mesonet and FPS-77 digital radar during snowstorms for evaluation of the use of radar to observe and predict snow. Simultaneous measurements of optical extinction coefficient, radar reflectivity, and snow depth were made, together with determinations of visual range. The measurements verify both the calibration of the visibility instruments and the relationship between visual range and extinction coefficient. A relationship found between extinction coefficient and snowfall rate compares well with relationships found by other investigators. Radar reflectivity is found to be related to extinction coefficient, with the correlation being improved by time averaging and by allowance for velocity of snowflakes from the radar beam to the ground. However, the specification errors are of the order of + or - 42 percent to + or - 65 percent, and with the small spatial and temporal variability of extinction coefficient in snow, the radar is of marginal use where observations are available from the airways network. (Author).

Meteorological Resources and Capabilities in the '70's
Meteorological Resources and Capabilities in the '70's

Author: United States. Air Weather Service. Technical Exchange Conference

Publisher:

Published: 1969

Total Pages: 262

ISBN-13:

DOWNLOAD EBOOK

This report provides full length reports or summaries for 29 technical papers presented at the 5th AWS Technical Exchange Conference, held at USAF Academy, Colorado, 14-17 July 1969. The general theme is "Meteorological Resources and Capabilities of the 1970's." Authors represented Air Force, Navy, NASA, ESSA, USDA, NCAR, universities, and an airline. Subject areas include data-gathering systems (ground, air, satellite), communication, computation, and display systems, numerical weather predication, automation and applied weather forecasting (man-machine mix), tropical meteorology, and weather modification.