The Potential Use of SARAL ALTIKA Towards Coastal Regions - A Case Study on East Coast of India by PSN Acharyulu in MAOPS- Lupine Publishers
Altimeter data provides a precise measurement of wave parameters
especially over open ocean. Now, several attempts were
made to retrieve wind and wave information towards coastal regions.
SARAL/Altika is a first of its kind to operate at such a high
frequency to provide better observation of coastal regions. The present
study is especially important for the Indian coasts because
most of the in-situ observations are either coastally located or at deep
water. But there is no sufficient information on data available
at intermediate waters, which is very important to addresses several
coastal problems. In this paper, an attempt to observe retrieve
and validate SARAL along track wave data at different coastal regions
along the east coast of India. SARAL validation is carried out
at the point closest to the buoy and at all the points along the track
close to the coast. The narrow foot print size enables to get
valid data as close as three km proximity to the coast. SARAL
Significant wave height (SWH) estimates are well correlated with the
coastal buoy measurements and improves observation of wave height
estimates close to the coast. This helps.com to understand
transformation of wave from deep water to shallow water.
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