Evaluation of ocean surface vector winds observed by QuikSCAT/SeaWinds and ADEOS-II/SeaWind

Naoto Ebuchi, Hans C. Graber, Michael J. Caruso

Research output: Contribution to conferencePaper

4 Scopus citations

Abstract

Ocean surface vector winds observed by QuikSCAT/SeaWinds and ADEOS-II/SeaWinds are evaluated by comparison with wind and wave data from the NDBC (National Data Buoy Center), TAO (Tropical Atmosphere and Ocean)/TRITON (Triangle Trans-Ocean buoy Network), PIRATA (Pilot Research Moored Array in the Tropical Atlantic), and JMA (Japan Meteorological Agency) buoys in the Atlantic and Pacific Oceans, Gulf of Mexico, and seas around Japan. Only buoys located offshore and in deep water were analyzed. The temporal and spatial separations between the scatterometer and buoy observations were limited to less than 10 min and 12.5 km. The buoy wind speeds were converted to equivalent neutral winds at a height of 10 m above the sea surface. The comparisons show that the wind speeds and directions observed by the two SeaWinds sensors agree well with the buoy data. The typical root-mean-squared differences of the wind speed and direction are 1 m/s and 20 deg, respectively, while no significant dependences on the wind speed are discernible. The collocated data set is also used to explore differences of wind speed and direction against oceanic and atmospheric parameters and footprint positions. Residuals of the wind speed and direction show slight dependence on the cross-track cell locations, which correspond to combination of the azimuth observation angles. The wind speed residuals exhibit no significant dependences on the oceanic and atmospheric parameters, such as the sea surface temperature, air-sea temperature difference, and sea state.

Original languageEnglish (US)
Pages795-798
Number of pages4
StatePublished - Dec 1 2004
Event2004 IEEE International Geoscience and Remote Sensing Symposium Proceedings: Science for Society: Exploring and Managing a Changing Planet. IGARSS 2004 - Anchorage, AK, United States
Duration: Sep 20 2004Sep 24 2004

Other

Other2004 IEEE International Geoscience and Remote Sensing Symposium Proceedings: Science for Society: Exploring and Managing a Changing Planet. IGARSS 2004
CountryUnited States
CityAnchorage, AK
Period9/20/049/24/04

Keywords

  • ADEOS-II
  • Ocean surface vecotor winds
  • QuikSCAT
  • Scatterometer
  • SeaWinds

ASJC Scopus subject areas

  • Computer Science Applications
  • Earth and Planetary Sciences(all)

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  • Cite this

    Ebuchi, N., Graber, H. C., & Caruso, M. J. (2004). Evaluation of ocean surface vector winds observed by QuikSCAT/SeaWinds and ADEOS-II/SeaWind. 795-798. Paper presented at 2004 IEEE International Geoscience and Remote Sensing Symposium Proceedings: Science for Society: Exploring and Managing a Changing Planet. IGARSS 2004, Anchorage, AK, United States.