Turbulence structure function parameters retrieved in presence of ducting from the VHF radar and UHF wind profiler at Aberystwyth

N. Sengupta, I.A. Glover, D.A. Hooper

Research output: Contribution to conferencePaper

Abstract

Tropospheric ducts, which can lead to anomalous radio wave propagation, are formed by a decrease of humidity with height, an increase in temperature with height or a combination of both. An analysis of radiosonde data for July 2000 and June 2001 has established the presence of elevated ducts on several occasions. Turbulence structure function constant (Cn 2) profiles, measured using co-located VHF and UHF wind-profiling radars, show duct associated enhancement Inconsistencies between the profiles for the two radars are attributed to significant contributions to scattering at the lower frequency due to processes other than classical turbulence. Some of the data examined underlines the care needed in the reliable extraction of turbulence parameters in the presence of Rayleigh scattering from rain.

Conference

ConferenceXXVIIIth General Assembly of the International Union of Radio Science (Union Radio-Scientifique Internationale-URSI)
CountryIndia
CityNew Dehli
Period23/10/0529/10/05

Fingerprint

profiler
turbulence
radar
scattering
radio wave
radiosonde
wave propagation
humidity
parameter
temperature

Keywords

  • tropospheric ducts
  • radio wave propagation
  • radiosonde data
  • Rayleigh scattering

Cite this

Sengupta, N., Glover, I. A., & Hooper, D. A. (2005). Turbulence structure function parameters retrieved in presence of ducting from the VHF radar and UHF wind profiler at Aberystwyth. Paper presented at XXVIIIth General Assembly of the International Union of Radio Science (Union Radio-Scientifique Internationale-URSI) , New Dehli, India.
Sengupta, N. ; Glover, I.A. ; Hooper, D.A. / Turbulence structure function parameters retrieved in presence of ducting from the VHF radar and UHF wind profiler at Aberystwyth. Paper presented at XXVIIIth General Assembly of the International Union of Radio Science (Union Radio-Scientifique Internationale-URSI) , New Dehli, India.4 p.
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abstract = "Tropospheric ducts, which can lead to anomalous radio wave propagation, are formed by a decrease of humidity with height, an increase in temperature with height or a combination of both. An analysis of radiosonde data for July 2000 and June 2001 has established the presence of elevated ducts on several occasions. Turbulence structure function constant (Cn 2) profiles, measured using co-located VHF and UHF wind-profiling radars, show duct associated enhancement Inconsistencies between the profiles for the two radars are attributed to significant contributions to scattering at the lower frequency due to processes other than classical turbulence. Some of the data examined underlines the care needed in the reliable extraction of turbulence parameters in the presence of Rayleigh scattering from rain.",
keywords = "tropospheric ducts, radio wave propagation, radiosonde data , Rayleigh scattering",
author = "N. Sengupta and I.A. Glover and D.A. Hooper",
year = "2005",
month = "10",
language = "English",
note = "XXVIIIth General Assembly of the International Union of Radio Science (Union Radio-Scientifique Internationale-URSI) ; Conference date: 23-10-2005 Through 29-10-2005",

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Sengupta, N, Glover, IA & Hooper, DA 2005, 'Turbulence structure function parameters retrieved in presence of ducting from the VHF radar and UHF wind profiler at Aberystwyth' Paper presented at XXVIIIth General Assembly of the International Union of Radio Science (Union Radio-Scientifique Internationale-URSI) , New Dehli, India, 23/10/05 - 29/10/05, .

Turbulence structure function parameters retrieved in presence of ducting from the VHF radar and UHF wind profiler at Aberystwyth. / Sengupta, N.; Glover, I.A.; Hooper, D.A.

2005. Paper presented at XXVIIIth General Assembly of the International Union of Radio Science (Union Radio-Scientifique Internationale-URSI) , New Dehli, India.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Turbulence structure function parameters retrieved in presence of ducting from the VHF radar and UHF wind profiler at Aberystwyth

AU - Sengupta, N.

AU - Glover, I.A.

AU - Hooper, D.A.

PY - 2005/10

Y1 - 2005/10

N2 - Tropospheric ducts, which can lead to anomalous radio wave propagation, are formed by a decrease of humidity with height, an increase in temperature with height or a combination of both. An analysis of radiosonde data for July 2000 and June 2001 has established the presence of elevated ducts on several occasions. Turbulence structure function constant (Cn 2) profiles, measured using co-located VHF and UHF wind-profiling radars, show duct associated enhancement Inconsistencies between the profiles for the two radars are attributed to significant contributions to scattering at the lower frequency due to processes other than classical turbulence. Some of the data examined underlines the care needed in the reliable extraction of turbulence parameters in the presence of Rayleigh scattering from rain.

AB - Tropospheric ducts, which can lead to anomalous radio wave propagation, are formed by a decrease of humidity with height, an increase in temperature with height or a combination of both. An analysis of radiosonde data for July 2000 and June 2001 has established the presence of elevated ducts on several occasions. Turbulence structure function constant (Cn 2) profiles, measured using co-located VHF and UHF wind-profiling radars, show duct associated enhancement Inconsistencies between the profiles for the two radars are attributed to significant contributions to scattering at the lower frequency due to processes other than classical turbulence. Some of the data examined underlines the care needed in the reliable extraction of turbulence parameters in the presence of Rayleigh scattering from rain.

KW - tropospheric ducts

KW - radio wave propagation

KW - radiosonde data

KW - Rayleigh scattering

UR - http://www.ursi.org/Proceedings/ProcGA05/GA2005.htm

UR - http://www.ursi.org/Proceedings/ProcGA05/pdf/F10.10(01633).pdf

M3 - Paper

ER -

Sengupta N, Glover IA, Hooper DA. Turbulence structure function parameters retrieved in presence of ducting from the VHF radar and UHF wind profiler at Aberystwyth. 2005. Paper presented at XXVIIIth General Assembly of the International Union of Radio Science (Union Radio-Scientifique Internationale-URSI) , New Dehli, India.