Instrumentation for high-frequency meteorological observations from research vessel

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dc.contributor.author VijayKumar, K.
dc.contributor.author Khalap, S.
dc.contributor.author Mehra, P.
dc.date.accessioned 2011-12-08T07:36:50Z
dc.date.available 2011-12-08T07:36:50Z
dc.date.issued 2011
dc.identifier.citation Oceans of opportunity: International cooperation and partnership across the Pacific. (OCEANS'11 MTS/IEEE Kona; Hilton Waikoloa Village, Kona, Hawai‘i; USA 19-22 Sep 2011). Mar. Technol. Soc.; USA; 2011; Paper no. 110422-026; 1-10
dc.identifier.uri http://drs.nio.org/drs/handle/2264/3967
dc.description.abstract Ship provides an attractive platform from which high-frequency meteorological observations (e.g., wind components, water vapor density, and air temperature) can be made accurately. However, accurate observations of meteorological variables depend on removal of ship motion contamination and appropriate placement of sensors on-board. Vertical and lateral wind components suffer more disturbances than longitudinal wind in consequence of ship motion. Wind stream approaching towards bow gets deflected due to the presence of ship's superstructure that causes error in the wind measurements. It has been reported that underestimation in wind speed owing to the ship's superstructure is approx 7% for bow-on wind and overestimation is approx 10% for relative wind direction of 900. Mean wind speed reduction of approx 8.5% were estimated due to the cylindrical mast when wind flow was parallel to the horizontal plane and excess of approx 9% for the wind flow normal to the plane. The effect of flow distortion on wind was less for relative wind direction of + or -450 relative to the major axis of the ship. In this article, instrumentation used for measuring high-frequency components of meteorological parameters on-board Indian research vessel 'Sindhu Sankalp' and correction of wind for ship motions is described.
dc.language.iso en
dc.publisher Marine Technology Society
dc.rights ©2011 MTS. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subject meteorological observations
dc.subject shipboard equipment
dc.subject instruments
dc.title Instrumentation for high-frequency meteorological observations from research vessel
dc.type Conference Article


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