Comparison of Near Coastal Significant Wave Height Measurements from SARAL/AltiKa with Wave Rider Buoys in the Indian Region

Shaeb, K. Hareef Baba; Asundi, Anand; Joshi, Anjali; Bhandari, S. M.

doi:10.1080/01490419.2015.1029655

Cited by 19 publications

(13 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…They got a much better sampling from SARAL/AltiKa (more data available), and comparisons with local tide gauges showed a better agreement than with Jason-2, both for correlation (0.7 vs. 0.54) and RMS error (3.3 vs. 4.2 cm). Hareef Baba Shaed et al (2015) compared significant wave heights (SWH) from SARAL/AltiKa with wave buoy measurements along the coasts of India and found correlations ranging from 0.85 to 0.98 and RMS errors lower than 0.4 m.…”

Section: Ka-band Altimetry: Altikamentioning

confidence: 99%

Monitoring Sea Level in the Coastal Zone with Satellite Altimetry and Tide Gauges

et al. 2016

View full text Add to dashboard Cite

We examine the issue of sustained measurements of sea level in the coastal zone, first by summarizing the long-term observations from tide gauges, then showing how those are now complemented by improved satellite altimetry products in the coastal ocean. We present some of the progresses in coastal altimetry, both from dedicated reprocessing of the radar waveforms and from the development of improved corrections for the atmospheric effects. This trend towards better altimetric data at the coast comes also from technological innovations such as Ka-band altimetry and SAR altimetry, and we discuss the advantages deriving from the AltiKa Ka-band altimeter and the SIRAL altimeter on CryoSat-2 that can be operated in SAR mode. A case study along the UK coast demonstrates the good agreement between coastal altimetry and tide gauge observations, with root mean square differences as low as 4 cm at many stations, allowing the characterization of the annual cycle of sea level along the UK coasts. Finally, we examine the evolution of the sea level trend from the open to the coastal ocean along the western coast of Africa, comparing standard and coastally improved products. Different products give different sea level trend profiles, so the recommendation is that additional efforts are needed to study sea level trends in the coastal zone from past and present satellite altimeters. Further improvements are expected from more refined processing and screening of data, but in particular from the constant improvements in the geophysical corrections.

show abstract

Section: Ka-band Altimetry: Altikamentioning

confidence: 99%

Monitoring Sea Level in the Coastal Zone with Satellite Altimetry and Tide Gauges

et al. 2016

View full text Add to dashboard Cite

show abstract

“…It is thus not surprising that it has been only scarcely used to validate model results in the Baltic Sea (Cieślikiewicz et al, 2008;Tuomi et al, 2011). With certain precaution, it has shown good results for basins such as the Mediterranean Sea (Cavaleri and Sclavo, 2006;Galanis et al, 2012), a nearshore region of the Indian Ocean (Hareef Baba Shaeb et al, 2015;Patra and Bhaskaran, 2016), and for a range of regional seas such as the China Sea (Kong et al, 2016), the Arabian Sea (Hithin et al, 2015), the Chukchi Sea (Francis et al, 2011) or the German Bight (Passaro et al, 2015).…”

mentioning

confidence: 99%

Response to Reviewer 1

Kudryavtseva¹

2017

View full text Add to dashboard Cite

The main properties of the climate of waves in the seasonally ice-covered Baltic Sea and its decadal changes since 1990 are estimated from satellite altimetry data. The data set of significant wave heights (SWH) from all existing nine satellites, cleaned and cross-validated against in situ measurements, shows overall a very consistent picture. A comparison with visual observations shows a good correspondence with correlation coefficients of 0.6-0.8. The annual mean SWH reveals a tentative increase of 0.005 m yr -1 , but higher quantiles behave in a cyclic manner with a timescale of 10-15 yr.Changes in the basin-wide average SWH have a strong meridional pattern: an increase in the central and western parts of the sea and decrease in the east. This pattern is likely caused by a rotation of wind directions rather than by an increase in the wind speed.

show abstract

“…It is thus not surprising that it has been only scarcely used to validate model results in the Baltic Sea (Cieślikiewicz et al, 2008;Tuomi et al, 2011). With certain precautions in place, it has shown good results for basins such as the Mediterranean Sea (Cavaleri and Sclavo, 2006;Galanis et al, 2012), a nearshore region of the Indian Ocean (Hareef Baba Shaeb et al, 2015;Patra and Bhaskaran, 2016), and for a range of regional seas such as the China Sea (Kong et al, 2016), the Arabian Sea (Hithin et al, 2015), the Chukchi Sea (Francis et al, 2011), or the German Bight (Passaro et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Satellite altimetry reveals spatial patterns of variations in the Baltic Sea wave climate

Kudryavtseva

Soomere

2017

Earth Syst. Dynam.

View full text Add to dashboard Cite

Abstract. The main properties of the climate of waves in the seasonally ice-covered Baltic Sea and its decadal changes since 1990 are estimated from satellite altimetry data. The data set of significant wave heights (SWHs) from all existing nine satellites, cleaned and cross-validated against in situ measurements, shows overall a very consistent picture. A comparison with visual observations shows a good correspondence with correlation coefficients of 0.6-0.8. The annual mean SWH reveals a tentative increase of 0.005 m yr −1 , but higher quantiles behave in a cyclic manner with a timescale of 10-15 years. Changes in the basin-wide average SWH have a strong meridional pattern: an increase in the central and western parts of the sea and a decrease in the east. This pattern is likely caused by a rotation of wind directions rather than by an increase in the wind speed.

show abstract

Comparison of Near Coastal Significant Wave Height Measurements from SARAL/AltiKa with Wave Rider Buoys in the Indian Region

Cited by 19 publications

References 16 publications

Monitoring Sea Level in the Coastal Zone with Satellite Altimetry and Tide Gauges

Monitoring Sea Level in the Coastal Zone with Satellite Altimetry and Tide Gauges

Response to Reviewer 1

Satellite altimetry reveals spatial patterns of variations in the Baltic Sea wave climate

Contact Info

Product

Resources

About