Estimation of SLR in Bangladesh using Satellite Altimetry Data

Research Funding: Department of Environment (DoE), Ministry of Environment and Forest

Faculty Researcher: Prof Dr A.K.M. Saiful Islam

Collaboration: Lead: Institute of Water and Flood Management (IWFM), BUET

Duration: July, 2018 - June, 2020

A good estimate of the sea level is quite important for impact assessment. Tide gauges are the classical way of recording sea-level. As these tidal gauges are located on the ground, they always experience the influence of the land subsidence, vertical up-lifting and land accretion process.  Satellite altimetry, which is the measurement of water level from space with reasonable accuracy, provides a viable alternative to the ground based measurements. Although altimeter measurements are available from early 70’s, reliable estimate of global mean-sea-level rise first became possible with the launch of TOPEX/Poseidon radar altimeter (T/P) in 1992. With a 10-day repeat ground track, T/P continued it mission till 2001 before Jason-1 satellite arrived. The same track is since followed by Jason-2 and very recently by Jason-3. With more than twenty years of continued record, this family of altimeter provided us with one of the best record of sea-level both in spatial and temporal scale. Estimation of sea level rise using satellite data will provide an opportunity to identify the net anthropogenic sea level rise of the Bay of Bengal due to global warming. This study is aimed at estimation of Sea Level Rise (SLR) in the Bay of Bengal using remote estimation of water level using satellite altimeter. This project is funded by the Department of Environment (DOE).