Wave Measurements, Needs and Developments for the Next Decade

Swail, Val R.; Jensen, Robert E.; Lee, B.; Turton, Jon; Thomas, Julie; Gulev, Sergei K.; Yelland, Margaret J.

doi:10.5270/oceanobs09.cwp.87

Cited by 32 publications

(30 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to Challenor and Cotton (2003), other national (or international) networks would also yield disparate calibrations. Again we are in no position to solve such issues, except to lend our support to the views of Swail et al (2010) that better consistency and accuracy of in situ ocean wave measurements is essential, not only for these sorts of calibration exercises, but for climate science in general. The mean refers to (altimeter minus buoy).…”

Section: Discussionmentioning

confidence: 99%

“…Durrant et al (2009) recently concluded that Canadian buoys were underestimating wave heights relative to the NDBC buoys by about 10%, and our slope estimates shown in Table 2 for Jason-1 confirm their result. These inconsistency problems among different in situ measurements are becoming widely appreciated, and a recent report has identified the critical need to assess and improve the quality of observations from the present networks of moored buoys (Swail et al, 2010). The recent work of Gemmrich et al (2011) should further emphasize this need.…”

Section: Buoy Inconsistenciesmentioning

confidence: 99%

See 1 more Smart Citation

Calibration of Ocean Wave Measurements by the TOPEX, Jason-1, and Jason-2 Satellites

Ray

Beckley

2012

Marine Geodesy

View full text Add to dashboard Cite

The calibration and validation of ocean wave height measurements by the TOPEX, Jason-1, and Jason-2 satellite altimeters is addressed by comparing the measurements internally among themselves and against independent wave measurements at moored buoys. The two six-month verification campaigns, when two of the satellites made near-simultaneous measurements along the same ground track, are invaluable for such work and reveal subtle aspects that otherwise might go undetected.The two Jason satellites are remarkably consistent; Topex reports waves generally 1-2% larger. External calibration is complicated by some systematic errors in the buoy data. We confirm a recent report by Durrant et al. that Canadian buoys underestimate significant wave heights by about 10% relative to U.S. buoys. Wave heights from all three altimetric satellites require scaling upwards by 5-6% to be consistent with U.S. buoys.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Buoy Inconsistenciesmentioning

confidence: 99%

Calibration of Ocean Wave Measurements by the TOPEX, Jason-1, and Jason-2 Satellites

Ray

Beckley

2012

Marine Geodesy

View full text Add to dashboard Cite

show abstract

“…For these reasons, waves are mapped globally based on numerical wave model. Therefore, altimeter and wave forecast/hindcast data ought to be validated by moored wave riders or bottom mounted wave sensors located mostly in relatively shallow waters (e.g., NDBC buoys, Swail et al 2010, Nowphas system in Japan, Nagai et al 2005). There are, however, a number of meteorological and tsunami monitoring buoys in deep waters such as TAO array and DART buoys.…”

Section: Introductionmentioning

confidence: 99%

Deep water observations of extreme waves with moored and free GPS buoys

et al. 2014

View full text Add to dashboard Cite

Point-positioning GPS-based wave measurements were conducted by deep ocean (over 5,000 m) surface buoys moored in the North West Pacific Ocean in 2009, 2012, and 2013. The observed surface elevation bears statistical characteristics of Gaussian, spectrally narrow ocean waves. The tail of the averaged spectrum follows the frequency to the power of −4 slope, and the significant wave height and period satisfies the Toba's 3/2 law. The observations compare well with a numerical wave hindcast. Two large freak waves exceeding 13 m in height were observed in October 2009 and three extreme waves around 20 m in height were observed in October 2012 and in January 2013. These extreme events are associated with passages of a typhoon and a mid-latitude cyclone. Horizontal movement of the buoy revealed that the orbital motion of the waves at the peak of the wave group mostly exceed the weakly nonlinear estimate. For some cases, the orbital velocity exceeded the group velocity, which might indicate a breaking event but is not conclusive yet.

show abstract

“…[39]), wave data from buoys and ODAS [43], OceanSITES time series stations [36], and meteorological observations made at tide gauge locations [31]. In some cases, these data streams also…”

Section: Data Availability and Accessibilitymentioning

confidence: 99%

Surface In situ Datasets for Marine Climatological Applications

Woodruff¹,

Scott²,

Berry³

et al. 2010

Proceedings of OceanObs'09: Sustained Ocean Observations and Information for Society

View full text Add to dashboard Cite

Climatological products are required for monitoring and studying global climate change and accurately identifying secular trends over the past two centuries. These products require consistent and wellcharacterised observational data and metadata from the earliest ship observations and from the modern ocean observing system. Maintaining and developing longterm surface marine climatological datasets requires a different approach to data management than for operational applications.The current management of climatological datasets is discussed and specific modernization steps recommended. The status of relevant in situ observing systems is reviewed in the context of available satellite data. The extent to which requirements for maintaining sampling, redundancy, and consistency are met by existing data delivery mechanisms is considered. Recommendations include: data and metadata rescue; maintaining consistency with the historical record; modernization of data flow and climatological products; for observations with added-value through improved metadata, quality control and uncertainty characterization; and improved dataset construction methods.

show abstract

Wave Measurements, Needs and Developments for the Next Decade

Cited by 32 publications

References 12 publications

Calibration of Ocean Wave Measurements by the TOPEX, Jason-1, and Jason-2 Satellites

Calibration of Ocean Wave Measurements by the TOPEX, Jason-1, and Jason-2 Satellites

Deep water observations of extreme waves with moored and free GPS buoys

Surface In situ Datasets for Marine Climatological Applications

Contact Info

Product

Resources

About