Brahan Project High Frequency Radar Ocean Measurements: Currents, Winds, Waves and Their Interactions

Lipa, Belinda; Barrick, Donald E.; Alonso-Martirena, Andrés; Fernandes, M. Joana; Ferrer, M.I.; Nyden, Bruce

doi:10.3390/rs61212094

Cited by 38 publications

(51 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results derived from the best linear fit of scatterplots show that the slope is close to 1, although HFR estimations seem to slightly overestimate Hs field in the Galician region. Since these results are in line with previous literature on HFR-buoy wave height comparisons [7,16,18], we can state that HFR performance is consistent and it can act as a useful ancillary tool, especially when no in situ wave observations are available, as occurred with the B2 buoy during February 2014 (Figure 2b). In this context, specific intercomparisons of Hs have been conducted for the three selected periods, by using in situ measurements (B1 buoy), remote-sensed estimations (SILL HFR site), and modeled data (IBI-WAV) in the closest grid point (Figure 3b,d,f).…”

Section: Preliminary Skill Assessment Of Hf Radar Wave Height Estimatsupporting

confidence: 80%

Extreme Wave Height Events in NW Spain: A Combined Multi-Sensor and Model Approach

et al. 2017

View full text Add to dashboard Cite

The Galician coast (NW Spain) is a region that is strongly influenced by the presence of low pressure systems in the mid-Atlantic Ocean and the periodic passage of storms that give rise to severe sea states. Since its wave climate is one of the most energetic in Europe, the objectives of this paper were twofold. The first objective was to characterize the most extreme wave height events in Galicia over the wintertime of a two-year period (2015-2016) by using reliable high-frequency radar wave parameters in concert with predictions from a regional wave (WAV) forecasting system running operationally in the Iberia-Biscay-Ireland (IBI) area, denominated IBI-WAV. The second objective was to showcase the application of satellite wave altimetry (in particular, remote-sensed three-hourly wave height estimations) for the daily skill assessment of the IBI-WAV model product. Special attention was focused on monitoring Ophelia-one of the major hurricanes on record in the easternmost Atlantic-during its 3-day track over Ireland and the UK (15-17 October 2017). Overall, the results reveal the significant accuracy of IBI-WAV forecasts and prove that a combined observational and modeling approach can provide a comprehensive characterization of severe wave conditions in coastal areas and shows the benefits from the complementary nature of both systems.

show abstract

Section: Preliminary Skill Assessment Of Hf Radar Wave Height Estimatsupporting

confidence: 80%

Extreme Wave Height Events in NW Spain: A Combined Multi-Sensor and Model Approach

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Considering the recent progress in HF radar measurement of wind-wave parameters (e.g., [4,5]), we should be able to evaluate the detection probability along the beams for a tsunami scenario in real time in the near future. In addition, we will soon apply the present method for longer-range NJRC HF radars with a center frequency of 13.5 MHz, to be deployed on the southeast coast of Kyushu Island in Miyazaki Prefecture (see Figure 1) and operated from April 2019.…”

Section: Discussionmentioning

confidence: 99%

“…Based on a multiyear analysis of HF radar observations off the US west coast, Kim et al [3] reported continuous surface ocean variability ranging from submesoscale (O(1 km)) to mesoscale (O(1000 km)) and revealed that the spectra decayed with k −2 at high wavenumbers, in agreement with theoretical submesoscale spectra. Lipa et al [4] revealed Remote Sens. 2018, 10, 1126 2 of 17 periodic time oscillations in the wave parameters (height, period, direction) forced by semidiurnal tides, which was never observed before HF radar.…”

Section: Introductionmentioning

confidence: 99%

Real-Time Tsunami Detection with Oceanographic Radar Based on Virtual Tsunami Observation Experiments

et al. 2018

View full text Add to dashboard Cite

Abstract:The tsunami generated by the 2011 Tohoku-Oki earthquake was the first time that the velocity fields of a tsunami were measured by using high-frequency oceanographic radar (HF radar) and since then, the development of HF radar systems for tsunami detection has progressed. Here, a real-time tsunami detection method was developed, based on virtual tsunami observation experiments proposed by Fuji et al. In the experiments, we used actual signals received in February 2014 by the Nagano Japan Radio Co., Ltd. radar system installed on the Mihama coast and simulated tsunami velocities induced by the Nankai Trough earthquake. The tsunami was detected based on the temporal change in the cross-correlation of radial velocities between two observation points. Performance of the method was statistically evaluated referring to Fuji and Hinata. Statistical analysis of the detection probability was performed using 590 scenarios. The maximum detection probability was 15% at 4 min after tsunami occurrence and increased to 80% at 7 min, which corresponds to 9 min before tsunami arrival at the coast. The 80% detection probability line located 3 km behind the tsunami wavefront proceeded to the coast as the tsunami propagated to the coast. To obtain a comprehensive understanding of the tsunami detection probability of the radar system, virtual tsunami observation experiments are required for other seasons in 2014, when the sea surface state was different from that in February, and for other earthquakes.

show abstract

“…High frequency radar is typically statically mounted on land and used to measure wave height, period and direction as well as surface water velocity, and to estimate wind speed and direction (Lipa et al, 2014). This is particularly useful since the measurements can cover up to 100 s of km range with temporal resolution of hours, spatial resolutions for different frequency operations range from meters to kilometers (Wyatt, 2006).…”

Section: High-frequency Radarmentioning

confidence: 99%

A Review of the Tools Used for Marine Monitoring in the UK: Combining Historic and Contemporary Methods with Modeling and Socioeconomics to Fulfill Legislative Needs and Scientific Ambitions

et al. 2017

View full text Add to dashboard Cite

Marine environmental monitoring is undertaken to provide evidence that environmental management targets are being met. Moreover, monitoring also provides context to marine science and over the last century has allowed development of a critical scientific understanding of the marine environment and the impacts that humans are having on it. The seas around the UK are currently monitored by targeted, impact-driven, programmes (e.g., fishery or pollution based monitoring) often using traditional techniques, many of which have not changed significantly since the early 1900s. The advent of a new wave of automated technology, in combination with changing political and economic circumstances, means that there is currently a strong drive to move toward a more refined, efficient, and effective way of monitoring. We describe the policy and scientific rationale for monitoring our seas, alongside a comprehensive description of the types of equipment and methodology currently used and the technologies that are likely to be used in the future. We contextualize the way new technologies and methodologies may impact monitoring and discuss how whole ecosystems models can give an integrated, comprehensive approach to impact assessment. Furthermore, we discuss how an understanding of the value of each data point is crucial to assess the true costs and benefits to society of a marine monitoring programme.

show abstract

Brahan Project High Frequency Radar Ocean Measurements: Currents, Winds, Waves and Their Interactions

Cited by 38 publications

References 17 publications

Extreme Wave Height Events in NW Spain: A Combined Multi-Sensor and Model Approach

Extreme Wave Height Events in NW Spain: A Combined Multi-Sensor and Model Approach

Real-Time Tsunami Detection with Oceanographic Radar Based on Virtual Tsunami Observation Experiments

A Review of the Tools Used for Marine Monitoring in the UK: Combining Historic and Contemporary Methods with Modeling and Socioeconomics to Fulfill Legislative Needs and Scientific Ambitions

Contact Info

Product

Resources

About