Abstract: The amounts of trace gases notably
CO
$_2$
, N
$_2$
O and CH
$_4$
have been increasing in the earth's atmosphere. Increased concentration of
these gases leads to a warming of the Earth's surface and the lower atmosphere.
The resulting changes in climate and their impacts such as sea level rise,
coastal ecosystems etc, can be estimated without associating the origin of the
warming to any one of these gases specifically. In this paper, an attempt has
been made to review the processes involved in climate change and its effects on
sea level rise and on the coastal ecosystems.
