how is global warming affecting the oceans?

Question

i know 2 riseing and heating

Answer 1

Global warming is affecting many parts of the world. It makes the sea rise, and when the it does, the water covers many low land islands. Global sea level rise is caused by two factors. One is the delivery of water to the ocean as land ice melts, such as mountain glaciers and polar icecaps.

(1) Result of Global Warming:

(a) Glaciers are already melting on 5 continents.
(b) As water temperatures rise, oceans spread.
(c) The 20th century has seen a dramatic rise in sea levels.
(d) Coastal U.S. has seen beach erosion and dying coastal plants.
(e) Land of some island nations is being submerged under water.
(f) The near future could see millions of climate refugees.
(g) Earth has been experiencing the 10 warmest years on record.

(2) In order to stop this global warming...

* We need to drive smaller vehicles and heat and cool our buildings more moderately.
* Carbon dioxide emissions can be reduced if consumers purchase more energy-efficient appliances, such as new refrigerators.
* Compact fluorescent light bulbs save tremendous amounts of fuel.

But in the long term, we need to extract energy more efficiently from fossil fuels and to develop alternative energy sources that do not lead to the production of greenhouse gases.

Answer 2

The fact that ocean temperatures are rising means that there will be more energetic storms (hurricanes) and likely more precipitation in some places.

Ocean currents may stop resulting in drastic changes to climates in Europe and other regions. This may lead to massive global starvation.

Check out the movie "An Inconvenient Truth"

If only it was a simple increase in air temperature.

Answer 3

Right on with the rising and heating as a consequence of the heating we are seeing increased coral bleaching as well. This happens when corals expel their symbiotic algae (zooxanthellae), leaving them colorless. This generally results in coral death.

Many marine diseases are more transmissible at higher temperatures, as well, and these are becoming more of a problem.

As has been mentioned, more severe storms are also occuring due to changes in current movement. Currents are shifting- the North Atlantic Oscillation has been thrown off, changing water temperatures in deep bays in the Northeastern United States. This has resulted in a drop off in production of zooplankton in Right Whale feeding grounds, and is putting the North-east Atlantic Right Whales under imminent threat of extinction.

Furthermore, migratory patterns are shifting and the temperature changes are allowing invasive species to survive and thrive in areas where they couldn't have previously.

Another possible link, more dealing with the coast than with the oceans, involves salt marshes. These act as major barriers when we have hurricanes, and they have been dying off along our coasts leading to less protection froms torms from the ocean and also more nutrient run-off into the oceans (which at the levels it is happenning is a bad thing). Die off is associated with possible stress brought about by rising temperatures and resulting dessication.