Why do you believe in global warming?

Question

In 400 years of measuring global temperatures, the temperature has only increased 3/4 of one Degree.

Ice expands when it freezes, that’s why ice floats above the water’s surface, and contracts when it melts. Thus, any floating ice (like the entire North Pole) when it melts, will not add any volume to the oceans Therefore only land-based ice can add to the volume of water in the oceans, not ice that is already in the ocean.

The majority of land based ice is on the continent of Antarctica, where the average year around temperature is more than 60 degrees below zero. The average temperature would have to rise by more than 60 degrees to melt the Antarctic ice cap. Hardly something we need to worry about in the near future.

Global warming, & cooling, has been documented by scientists over millions of years. In general it runs in 10,000 year cycles. You are basing your "global warming" evidence on a mere few hundred years.

So why do you still believe?

Answer 1

nah i dont belive in global warming

Answer 2

What is there not to believe? It was postulated in the 50's, expanded on in the 60's thru 80's and agreed upon by at least 2 US Presidents. Predictions of empirical change made in the 60's have been extremely close to actual measured change. The scientific community has been in concensus for 50 years on this so why now should there be any question of uncertainty?

"yes, it's true that 85% of people believe in global warming. but did you know that 71% of these people believe that it has nothing to do with human behavior?"  

According to whom? Source? I have seen 85% of Americans believe in Global Warming and only 19% believe it is natural. America doesn't represent the global view on this you know! A survey for the Finacial Times carried out by Harris Interactive in Germany, France, the UK, Italy and Spain found that 86 per cent of people believed humans were contributing to climate change, and 45 per cent thought it would be a threat to them and their families within their lifetimes.

Answer 3

There are glaciers melting faster and faster, forests are burning more often because of more droughts.  The earth should be cooling, because it is moving farther and farther away from the sun every year, its getting warmer, we're contributing, and by 2054 we're done.  Even if all emissions of greenhouse gases ceased completely, we're still toast by 2054.

Answer 4

Because the Rev. Al Gore told me to.

Answer 5

Water does not always follow the laws of Physics it sinks until it hits 4 degrees centigrade ,if it gets colder it rises again .this is one of the reasons why water is always moving ,it does not lie cold on the bottom of a lake.

Nobody has said that the North pole melting will raise the ocean levels .But Greenland ,the inland glaziers

and Antarctica will, And some very big arms of ice ,that even had names have broken off and are now melting in the sea

Have you ever been in a desert ,or in a forest ,the difference in climate  is vast .

Humanity has made desserts or desert conditions everywhere ,with deforestation and bad agriculture

,

And everywhere we have changed forests for concrete or asphalt.

Accumulatively This MUST have influenced the overall Environment ,if it totally changed local conditions.

Global Warming appears to be  true, there are Natural fazes but we are affecting that to a great extent ,with deforestation ,desertification and pollution., especially air pollution.

A few weeks ago one of NASA's top scientists concluded that the Arctic Ocean could be nearly ice-free within five years, much faster than all previous predictions.

when the north pole is gone , you may have polar bears soon in America ,looking for a home ,

Calculations do not include the accumulative ,speeding up ,factor with time. the increase in water temperature will get faster all the time as well as the melting, when the ice is all gone the deeper cold Ocean currents will be drastically affected,which in turn will affect the warm currents,since all moving bodies of water are connected in series.

This will affect coastal climates ,world wide ,almost instantly. All aquatic flora and fauna will be affected,many dying off and others becoming invasive,

And recently In Chiapas ,and Tabasco in Mexico .more then a million people became homeless overnight with water coming up to their roofs ,because of rains from super evaporation from the forests,this had never happened before. Millions of animals died.

In India 3000 people died because of super storms .

.A few years ago in Europe 3500 people,died during a heat wave ,many of them in France .

Right now the average death toll annually is 150.000 due to Global warming

. these figures are already out of date and are expected to double soon.

In Northern China millions of people are running for their lives because regular dust storms so far have buried 900 villages under the sand and the whole of northern China is turning into a dessert.

The Sahara is growing by 7 kilometers a year all around the edges ,like a slow burning fire shriveling up their neighbors In the Kalahari huge rivers have dried up and thousand of species are gone due to their habitats disappearing .

The biggest changes are invisible at micro biotic levels species are becoming extinct ,others are multiplying ,

This affects the insect populations that follow ,and changes in that ,affect all that follows in the food chains ,

All life is interrelated of both flora and fauna, And since we are on the top of the food chain ,

we are always the last to know.

So Global warming has its toll there are incidents all over the world ,

However

confusion rules the day ,i am beginning to think that SCIENCE HAS BEEN INVADED WITH POLITICS AND HUMAN EMOTIONS

The truth is being distorted at high levels,

And lies have been weaved in.

Some of the real dangers are being hidden because there are no solutions , Public could panic.and Authorities would loose control .

Besides Corporations have other priorities and changes will cause loss of profits ,this also affects the truths being published

Others facts are exaggerated so that the phenomena can be used to milk the people.

This is further complicated with Arrogance that will not admit that mankind could be guilty, or that Gods could be out of control ,unloving or incompetent

But I do not think we can make a real difference anymore to change the tide.

On a Global scale,Humanity is not co operative enough .

The poor regions have other priorities such as daily survival.

There is a lot we can do about being more responsible with what we got ,Sounds as if you are trying to opt out of the responsibility

In the first world countries many do not care or are more interested in Global Control than Global Warming.

Answer 6

Because there is such thing as GLOBAL WARMING!

Answer 7

The difference between the 10-yr average (1880 - 1889) and the most recent 10-yr average (1998-2007) is 0.823 C.  That's 1.48 F.  We don't have sufficient instrumental records going back 400 years, but the conclusion by the National Academy of Sciences analysis of proxy temperatures was that:

"It can be said with a high level of confidence that global mean surface temperature was higher during the last few decades of the 20th century than during any comparable period during the preceding four centuries."

The sea-level rise, thus far, has been mostly caused by the expansion of water which occurs when it warms.  It's currently rising at about 3.2 mm/year, which is a significant increase over just a 100 years earlier.

In spite of the cold winter temperatures in Antarctica, the temperatures get well above freezing in the Summer (59F is current record).  Antarctica has lost a significant amount of ice over the past 10 years, and the melt rate is accelerating. This is partly caused by under-ice rivers which grease the bedrock to move the glaciers toward the sea where ice calving occurs.

The natural cycle of Ice Ages is really closer to 100,000 years and are most likely caused by the Milankovitch cycles (orbital anomalies of our planet).  But just because natural factors have changed the climate in the past, does not mean that human factors can't change the climate in the present.  The level of CO2 greenhouse gas in our atmosphere is growing at a rate 20-times faster than any previous rate scientists can find from the last 20,000.  And the isotope make-up of that CO2 demonstrates with certainty that it's from human burning of fossil fuels.  Without greenhouse gases in our atmosphere, the average planet temperature would be 33 C cooler, so we know for certain that greenhouse gases retain heat from the sun.  It doesn't take much logic to realize that increased levels of greenhouse gases will trap more heat, and that's exactly what we're observing.

Why do I still believe?  Because the scientific evidence (you'll only find most of that in actual scientific literature, not personal blogs) is overwhelming that human activities are the primary driving factor of the temperature increase we're seeing over the last half of the 20th century and there's no end in site for the 21st century.

Answer 8

You mistakenly confused scientific proof with a human belief system.  I 'understand' the science of global climate change due to AGW!

Answer 9

-Yes.   Because of personal observations over my lifetime.  

- That we have something to do with it?   Maybe not.

- How can humans not have any impact on the amount of CO2 going into the atmosphere?   The US puts out close to 10,000,000,000 tons a year.  

-The average temperature I found for Antarctica was -49'.   That's averageing in the much colder inland areas to the relatively warm coastal areas.

-34'F water is the densest.   Warmer (or colder) than that and  water does indeed expand.   That can be easily observed by diving down in a lake.    As you go deeper the water gets cooler during the summer.