Vijay Agarwal

Publication Date: 2008

Publication Name: Particuology

Research Interests:
Mechanical Engineering, Chemical Engineering, Fluidized Bed, Slug Flow, Pressure Drop, and 2 moreFlow Pattern and Flow Rate

Accurate prediction of ocean surface waves is a challenging task with many associated difficulties. Availability of good quality wind and wave information from satellite platforms inspired the scientific community to assimilate such data... more

Accurate prediction of ocean surface waves is a challenging task with many associated difficulties. Availability of good quality wind and wave information from satellite platforms inspired the scientific community to assimilate such data in various spectral wave models for enhancing the accuracy of prediction. Over the Indian Ocean, which is the region of interest for the present study, wave heights in extreme situation can go up to 12–14 m, thereby increasing the probability of coastal hazards. This region is further governed by the southern ocean swells that propagate thousands of kilometers. These are, in general, not well captured by the spectral wave models. Therefore, assimilation of altimeter data in open ocean wave model WAM has been attempted with the aim of enhancing the quality of prediction of significant wave height. Further, simulated wave spectra have been assimilated in a coastal wave model SWAN. This assimilation has been found to significantly improve the prediction of the height of wind waves as well as swell waves.

Publication Date: 2009

Publication Name: Natural Hazards

Research Interests:
Psychology, Natural Hazards, Indian Ocean, Southern Ocean, Atmospheric sciences, and 6 moreScientific Communication, Ocean Wave, Region of Interest, Significant Wave Height, Surface Wave, and Wind Wave

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Publication Date: 2005

Publication Name: Ocean Engineering

Research Interests:
Civil Engineering, Ocean Engineering, Back Propagation, Radial Basis Function, Artificial Neural Networks, and 6 moreMultiple Regression, Maritime Engineering, Wind Speed, Artificial Neural Network, Feed-Forward, and Significant Wave Height

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Publication Date: 2005

Publication Name: Marine Structures

Research Interests:
Civil Engineering, Remote Sensing, Radial Basis Function, Marine Structures, Mathematical Models, and 7 moreNetwork computing, Satellite Data, Deep water, Maritime Engineering, Artificial Neural Network, Transfer Functions, and Significant Wave Height

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Research Interests:
Time Series, Clinical Trial, Creatine, Magnetic Resonance Spectroscopy, Glutamate, and 17 moreBrain, Humans, MR spectroscopy, American, Clinical Sciences, Hepatic Encephalopathy, Rating Scale, Middle Aged, Adult, Glutamine, Choline, Reference Values, Mr Imaging, Neurosciences, Myo-inositol, Glutamic Acid, and Lactulose

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Publication Date: 2007

Publication Name: Geophysical Research Letters

Research Interests:
Heat Transfer, Multidisciplinary, Sea surface temperature, Mixing, Seasonality, and 11 moreAir-Sea Interaction, Heat Flux, General Circulation Models, Iso, Geophysical, SST, Numerical Model, Summer, Summer Monsoon, Winds, and Mixed layer

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An effort has been made to retrieve surface spectral reflectance from satellite radiance measurements. For this purpose, a simple cubic equation with surface reflectance as one of its roots has been derived. Besides satellite measured... more

An effort has been made to retrieve surface spectral reflectance from satellite radiance measurements. For this purpose, a simple cubic equation with surface reflectance as one of its roots has been derived. Besides satellite measured radiance, the other required quantities in the equation are calculated by using the actual solution of radiative transfer equation by a discrete ordinate method, taking into account the inhomogeneous aerosol distribution. The method has been tested for internal consistency by numerical simulations using realistic aerosol profiles. Finally, it has been tested with a Landsat image, giving good agreement with ground observations.