Global warming natural causes?

Question

can someone give me all the possible natural causes for global warming

Answer 1

Natural causes of global warming are:

1. CO2 emitted in atmosphere by respiration of animals.

2. At night plants take oxygen and give CO2 back to the environment.

3. Volcanic eruptions emit gases like CO2 in atmosphere.

4. Natural fires in forests lead to CO2 addition in atmosphere.

And all those natural means which add CO2 in atmosphere.

I hope you have got your answer.

Answer 2

-Cosmic rays

-Ocean currents (PDO, AMO, AO, ENSO, etc.)

-Sunspot cycle

-Sun's geomagnetic activity

-Volcanoes

-Plate tectonics

-Milankovitch cycles

-carbon cycle

-hydro cycle

-wind currents

Of course, that list is just for climatic shifts in general--they may or may not be related to this warming.

Answer 3

Global warming is non existent.

Answer 4

Natural Cause Of Global Warming Through The Ages

Dinosaurs lived in what we today know as the colder areas of the Earth. This is mainly the Northwest part of the United States. This shows natural causes of global warming have changed the earth since then. Some states we now see as hot states were once covered in water, this shows that natural causes of global warming have occurred.

The scientific explanations of the natural causes of global warming through history are included in the following:

1. The sun spots are exploding -raising the heat

2. Large eruptions in the major volcanoes on the earth - increasing gases and damaging plants

3. The orbit the Earth takes has changed - movement to or from the sun

4. The Earth is different when compared to how it sits near the sun -changes the temperature up or down

5. Meteors caused explosions as they made contact with the Earth - who knows?

Truthfully, the natural causes of global warming are a result of the changes in the Earth itself. It is constantly changing and in an evolutionary state. There is evidence to suggest that even without the intervention of human involvement, global warming would probably be occurring anyways.

Answer 5

The global warming of the last thirty years was caused by the Pacific Decadal Oscillation. This vast ocean current system causes large parts of the Northern Pacific to be warmer or cooler. Starting around 1977 the PDO switched to its warm phase, and the globe started warming. These cycles last around 30 years, and the PDO has switched to cool phase, so the Earth is cooling.

http://www.cdc.noaa.gov/people/klaus.wol...

The thirty year cycles are clearly visible on the temperature record over the last 100 years. There is also a general background warming trend associated with our emergence from the little ice age (150 years ago), which is more than likely due to a gradual increase in solar radiation. The temperature record also has a warm bias from the heat generated from urbanization of temperature measuring sites.

http://www.cru.uea.ac.uk/cru/data/temper...

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