Seasonal Variations of Wind-Wave Climate in the Indian Ocean Using Satellite Altimeter Data

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As per Solomon et al., (2007) estimates for the twentieth century, global mean sea level rise is about 1.7 mm/yr. Apart from global mean sea level rise, the study of wind and wave climate in the oceans forms a major step in understanding the effect of climate change and helps to improve the coastal protection measures and numerical prediction models. The effect of changes in wind and wave climate is quite obvious as it directly affect the livelihood of millions of people living in the coastal areas and the economy of their respective governments.
In the recent years, satellite altimeter data sets have proved to be one of the reliable measurements. The significant wave height and wind speed data for Arabian Sea, Bay of Bengal and Indian Ocean regions were obtained from Topex/Poseidon, Jason-1 and Jason-2 altimeter missions for the period January 1993 to December 2010. The Indian Ocean partitioned into four different regions, in addition to Bay of Bengal and Arabian Sea. Further, a typical year is classified into four seasons in India viz., winter (December-February), summer (March-May), Monsoon (June-September), Post Monsoon (October-November). For each of the region, the yearly variations of sample average and maximum for the different seasons are computed for 18 year period for these two parameters. Since the dynamics of waves in ocean and wind are very complex, attempt has been made to correlate these two parameters. In addition, yearly seasonal percentage of frequencies of occurrences for all regions is analyzed. Further, the probability distribution for four seasons of 18 year period of Arabian Sea and Bay of Bengal are also computed, the details of which are presented and discussed in this paper.


Keywords: Wind, Wave, Altimeter, Seasonal Variation, Indian Ocean
Stream: Scientific Evidence
Presentation Type: 15 minute Paper in Themed Session in English
Paper: Seasonal Variations of Wind-Wave Climate in the Indian Ocean Using Satellite Altimeter Data, The


Dinesh kumar Eswaran

Project Associate, Department of Ocean Engineering, Indian Institute of Technology Madras
Chennai, Tamilnadu, India

I have obtained my M.Sc degeree in Mathematics from University of Madras in 2010. My current research is on Analysis of Wind wave climate over the Indian Ocean. Has won two merit prizes and two scholarships.

Prof Sannasiraj Sannasi Annamalaisamy

Professor, Dept of Ocean Engineering, Indian Institute of Technology Madras
Chennai, Tamilnadu, India

I have obtained Ph.D from IIT Madras, India in 1997. I was a post doc in NUS, Singapore, Endeavour India executive award from Australian Govt, Fullbright-Nehru senior research fellowship from USIEF and DAAD fellowship from Germany. Completed 8 Masters and 6 Ph.D theses. Published 140 technical papers. Conducted a few cousres, symposiums, workshops and conferences.

Prof Sundar Vallam

Professor, Ocean Engineering, Indian Institute of Technology Madras
Chennai, Tamilnadu, India

I have been active ever since graduation from College of Engineering Guindy, University of Madras in 1975. After completing all my qualifications (M.Tech and Ph.D) I joined IIT Madras and presently a professor in the department of Ocean Engineering. I have supervised 17 Ph.D, 14 M.S and 12 M.Tech theses in India and 9 graduate theses in Germany. I have about 400 publications in Conferences and journals to my credit. A few of them have won the best paper award in International conferences. I have participated in about 100 conferences worldwide. I have also organized 3 such major conferences and one more will be conducted [PIANC-COPEDEC], a major conference in the field of coastal & port engineering will be conducted during 20-24 Feb 2012. I am a member of the editorial board for about 10 Intl journals and reviewed a number technical papers submitted to such journals. I was awarded the prestigious honorary doctorate award by university of Wuppertal, Germany. I am the third recipient of this distinction over the span of about 40 years of the existence of the university. Apart from this, I have bagged about 10 awards.

Ref: C12P0134