Rise of sea why and how

Welcome

Rise of SeaWhy and How ?

Presented bySheikh Asif Imtiaz

• Sea-level is going up!

• States are under threat !

GOAL OF THIS PRESENTATION

To show the reasons of sea-level rise (And its impacts as well)

RISE OF SEA EVERY YEAR

According to NOAA,

• 0.12 inches since 1992

• Which was 0.04 to 0.1 since 1900

Why and How it is rising ?

FOUR MAJOR REASONS

• Thermal Expansion

• Melting of Polar Ice Caps

• Ice Loss from Greenland and Antarctica

• Extraction of Groundwater

Thermal Expansion

Rise of Temperature

Reception of heat

Expansion of Water

Rise of Sea

Melting of Polar Ice Caps(Decadal surface-air temperature (°C) via average of datasets maintained by the NOAA and NASA.)

Melting of Polar Ice Caps Contd.IncreasedTemperature

Melting of Ice Caps

Increased Sea Water

Flooding of lands

Melting of Polar Ice Caps Contd.

UN’s Report of 2012:

Between March and September

about 4.7 million square miles of ice surface- melted

Larger than the size of Continental US

Ice loss from Greenland and Antarctica

Ice Loss from Greenland and Antarctica Contd.

Rise of Temperature

Affects Ice

Shelves

Melts from

Below

Becomes Weak Break down

How Ice shelves of Antarctica BreakdownInformation Source: NOAA

Extraction of Groundwater

• Can it be linked with sea-level rise??

• Researches done by Utrecht University and IGRAC found such relation!

Extraction of Groundwater Contd.

Use of Groundwater in different purposes by Global Water Forum

IMPACTSFlood of lands

Loss of wetlandArea of Coastal & Wetlands in Mexico in past years and assumed condition in future (source: US Environmental Protection Agency

Loss of Biodiversity

River Erosion

Conclusion SOURCE: ECSP AND IPCC

•Two-third of Bangladesh is less than 5 meters above Sea-level

•Increase of Sea-level may cause loss of nearly 40% productive land

THANK YOU EVERYONE!&

Any Questions ?