Interoperability of seasondes and wellen radars in mapping radial surface currents

J. Martinez-Pedraja, Lynn K Shay, Brian K Haus, C. Whelan

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A dual-station high-frequency (HF) Wellen Radar (WERA) transmitting at 16MHz has observed nearreal-time surface currents over an approximate range of 100km across the Florida Straits since July 2004. During a 10-day period in April 2005 (15-25 April), a pair of 12.6-MHz SeaSondes (SS) were deployed south of the WERAs sites by NOAA's Center for Operational Oceanographic Products and Services (CO-OPS). The resulting SS grid overlapped the southern portion of theWERAdomain. During the same period of time, a bottom-mounted acoustic Doppler current profiler (ADCP) acquired subsurface current measurements within these HF radar grids starting at 14m below the surface in water of 86-m depth. The interoperability of beam-forming (WERA) and direction-finding (SS) HF radar technologies was examined. Comparisons of radial and vector currents for an 8-day concurrent time series suggested good agreement in current direction over both domains, where the surface currents' magnitudes were a maximum of 1.2ms-1. In the core of the radar domains consisting of 108 cells, hourly vector currents were obtained by combining WERA and SS radials. Generally, this can be done in a relatively straightforward manner, considering the geometric dilution of precision (GDOP). A second key issue is downscaling the SS measurements from a 3-km grid to a 1.1-km grid to match the WERA output. This enhanced grid spacing is important along the western flank of the Florida Current, where energetic, small-scale surface features have been observed.

Original languageEnglish (US)
Pages (from-to)2662-2675
Number of pages14
JournalJournal of Atmospheric and Oceanic Technology
Volume30
Issue number11
DOIs
StatePublished - Nov 2013

Fingerprint

Interoperability
Radar
radar
Acoustic Doppler Current Profiler
downscaling
Electric current measurement
Dilution
strait
Time series
spacing
dilution
energetics
Acoustics
time series
Water

ASJC Scopus subject areas

  • Atmospheric Science
  • Ocean Engineering

Cite this

Interoperability of seasondes and wellen radars in mapping radial surface currents. / Martinez-Pedraja, J.; Shay, Lynn K; Haus, Brian K; Whelan, C.

In: Journal of Atmospheric and Oceanic Technology, Vol. 30, No. 11, 11.2013, p. 2662-2675.

Research output: Contribution to journalArticle

@article{0ea357663a374856bb8c8c69418cbeab,
title = "Interoperability of seasondes and wellen radars in mapping radial surface currents",
abstract = "A dual-station high-frequency (HF) Wellen Radar (WERA) transmitting at 16MHz has observed nearreal-time surface currents over an approximate range of 100km across the Florida Straits since July 2004. During a 10-day period in April 2005 (15-25 April), a pair of 12.6-MHz SeaSondes (SS) were deployed south of the WERAs sites by NOAA's Center for Operational Oceanographic Products and Services (CO-OPS). The resulting SS grid overlapped the southern portion of theWERAdomain. During the same period of time, a bottom-mounted acoustic Doppler current profiler (ADCP) acquired subsurface current measurements within these HF radar grids starting at 14m below the surface in water of 86-m depth. The interoperability of beam-forming (WERA) and direction-finding (SS) HF radar technologies was examined. Comparisons of radial and vector currents for an 8-day concurrent time series suggested good agreement in current direction over both domains, where the surface currents' magnitudes were a maximum of 1.2ms-1. In the core of the radar domains consisting of 108 cells, hourly vector currents were obtained by combining WERA and SS radials. Generally, this can be done in a relatively straightforward manner, considering the geometric dilution of precision (GDOP). A second key issue is downscaling the SS measurements from a 3-km grid to a 1.1-km grid to match the WERA output. This enhanced grid spacing is important along the western flank of the Florida Current, where energetic, small-scale surface features have been observed.",
author = "J. Martinez-Pedraja and Shay, {Lynn K} and Haus, {Brian K} and C. Whelan",
year = "2013",
month = "11",
doi = "10.1175/JTECH-D-13-00022.1",
language = "English (US)",
volume = "30",
pages = "2662--2675",
journal = "Journal of Atmospheric and Oceanic Technology",
issn = "0739-0572",
publisher = "American Meteorological Society",
number = "11",

}

TY - JOUR

T1 - Interoperability of seasondes and wellen radars in mapping radial surface currents

AU - Martinez-Pedraja, J.

AU - Shay, Lynn K

AU - Haus, Brian K

AU - Whelan, C.

PY - 2013/11

Y1 - 2013/11

N2 - A dual-station high-frequency (HF) Wellen Radar (WERA) transmitting at 16MHz has observed nearreal-time surface currents over an approximate range of 100km across the Florida Straits since July 2004. During a 10-day period in April 2005 (15-25 April), a pair of 12.6-MHz SeaSondes (SS) were deployed south of the WERAs sites by NOAA's Center for Operational Oceanographic Products and Services (CO-OPS). The resulting SS grid overlapped the southern portion of theWERAdomain. During the same period of time, a bottom-mounted acoustic Doppler current profiler (ADCP) acquired subsurface current measurements within these HF radar grids starting at 14m below the surface in water of 86-m depth. The interoperability of beam-forming (WERA) and direction-finding (SS) HF radar technologies was examined. Comparisons of radial and vector currents for an 8-day concurrent time series suggested good agreement in current direction over both domains, where the surface currents' magnitudes were a maximum of 1.2ms-1. In the core of the radar domains consisting of 108 cells, hourly vector currents were obtained by combining WERA and SS radials. Generally, this can be done in a relatively straightforward manner, considering the geometric dilution of precision (GDOP). A second key issue is downscaling the SS measurements from a 3-km grid to a 1.1-km grid to match the WERA output. This enhanced grid spacing is important along the western flank of the Florida Current, where energetic, small-scale surface features have been observed.

AB - A dual-station high-frequency (HF) Wellen Radar (WERA) transmitting at 16MHz has observed nearreal-time surface currents over an approximate range of 100km across the Florida Straits since July 2004. During a 10-day period in April 2005 (15-25 April), a pair of 12.6-MHz SeaSondes (SS) were deployed south of the WERAs sites by NOAA's Center for Operational Oceanographic Products and Services (CO-OPS). The resulting SS grid overlapped the southern portion of theWERAdomain. During the same period of time, a bottom-mounted acoustic Doppler current profiler (ADCP) acquired subsurface current measurements within these HF radar grids starting at 14m below the surface in water of 86-m depth. The interoperability of beam-forming (WERA) and direction-finding (SS) HF radar technologies was examined. Comparisons of radial and vector currents for an 8-day concurrent time series suggested good agreement in current direction over both domains, where the surface currents' magnitudes were a maximum of 1.2ms-1. In the core of the radar domains consisting of 108 cells, hourly vector currents were obtained by combining WERA and SS radials. Generally, this can be done in a relatively straightforward manner, considering the geometric dilution of precision (GDOP). A second key issue is downscaling the SS measurements from a 3-km grid to a 1.1-km grid to match the WERA output. This enhanced grid spacing is important along the western flank of the Florida Current, where energetic, small-scale surface features have been observed.

UR - http://www.scopus.com/inward/record.url?scp=84890778805&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84890778805&partnerID=8YFLogxK

U2 - 10.1175/JTECH-D-13-00022.1

DO - 10.1175/JTECH-D-13-00022.1

M3 - Article

VL - 30

SP - 2662

EP - 2675

JO - Journal of Atmospheric and Oceanic Technology

JF - Journal of Atmospheric and Oceanic Technology

SN - 0739-0572

IS - 11

ER -