Global Warming: Top Evidence That It Is Real

global warming

Global warming is concerning a growing number of environmentalists, climate scientists, and governments worldwide. Despite the growing evidence indicating that civilization may be in danger, there are politicians, scientists, and interest groups that global warming is a hoax. Whether folks understand global warming or not, the National Oceanic and Atmosphere Administration (NOAA) proposed top evidence supporting that global warming is real.

1. Global rise in surface temperature

Climate fluctuated in temperature throughout Earth’s history due to geological upheavals, a slight change in the planet’s orbit, or when the sun’s energy production varied. However, in the last 200 years, human activity is the primary cause of the of rising global temperature, raising it by about 1.4°F since the early 20th century, according to NCDC. By taking samples from the Antarctic ice cores, scientists have also measured the amount of carbon dioxide and methane and found that they have increased by about 38 percent and 148 percent, respectively, since the dawn of the Industrial Revolution in the 1750s.

2. Sea level rising

Over the past 100 years, sea levels are rising at an average rate of 1.7 millimeters per year based on tide gauge observations. Since 1993, however, the rate of rising sea levels have increased to about 3.5 millimeters per year. Recent satellite imaging also revealed that worldwide sea levels has risen between 4 to 8 inches. When climate temperature increases, water absorbs some of that heat which causes the oceans to expand. It also causes ice to melt, particularly from Greenland, polar caps, and mountain glaciers, which contributes to greater amounts of liquid water. Higher temperature also causes large chunks of Antarctica’s ice to break off, such as the one that broke off from Pine Island Glacier on July 2013. At this rate, it is very likely that, by 2100, major coastal cities will be swamped or partially submerged, such as New York City, Miami, and London.

Global Warming

3. Snow cover retreating

The North Pole may no longer have enough snow covering for Santa’s home. According to the National Ice & Snow Data Center, as of July 2011, the amount of snow covering in the Northern Hemisphere was at a record low. The 2011 amount was 2.92 million square miles below 1979 average and 865,000 square miles below 2000 average. The air temperature around the North Pole was 11 to 14°F higher than average. When the 2011 satellite images of the North Pole were compared among those between 1979 and 2010, snow and ice coverings were melting at an earlier time, sometimes as early as 50 days. Other evidence of global warming include larger and more frequent pockets of ponds and lakes in the spring.

4. An 800,000-year-old record

Global warming had happened several times during the last 10 to 15 million years, but never at rate that is happening recently. Scientists examined trapped air bubbles in the Antarctic ice core that recorded about 800,000 years of Earth’s atmospheric history. Within this time frame, the Earth had a fluctuation of 170 to 300 parts per million (ppm) of carbon dioxide. This equates to about 35 percent of the amount of atmospheric carbon dioxide since the dawn of the Industrial Revolution. With the burning of fossil fuel contributing to about 80 percent of the rise in carbon dioxide gas and with deforestation and modern agriculture contributing to about 20 percent of the remaining amount, current levels are nearly 400 ppm, according to NOAA. This sharp jump in carbon dioxide level is the highest ever in the last 800,000 years.

5. The sun isn’t getting hotter

The sun may seem brighter and hotter for some people, but that is more likely a perception issue rather than an actual increase of heat and luminosity of the star. NOAA stated that the sun has maintained its natural 11-year-cycle of small energy fluctuations with no net increase between 1979 to 2009. At the same time period, however, global temperature had greatly increased, nullifying the myth that the sun has anything to do with the rapid rise in global warming.

Global warming isn’t likely to go away in a lifetime. If it took about 200 years to reach current levels of global temperature and carbon dioxide concentration — and with the current rates increasing — if may take another few centuries to undo the damage.

By Nick Ng

Sources:

NOAA

National Geographic

NASA

Live Science

National Snow and Ice Data Center

Climate Central

16 Responses to "Global Warming: Top Evidence That It Is Real"

  1. Manny   April 19, 2016 at 8:01 am

    u smell like pooop

    Reply
  2. pppoooppp   March 30, 2016 at 6:29 am

    it is fake

    Reply
  3. Hippo   January 13, 2015 at 11:00 am

    I am a hippo

    Reply
  4. zebra   September 14, 2014 at 4:57 pm

    i am a zebra

    Reply
  5. mylo   September 10, 2014 at 4:29 pm

    yeah nice

    Reply
  6. Jim S.   July 28, 2014 at 8:41 am

    This nation is a “reactionary nation’ rather than a “proactive nation.” It took the great depression to bring about changes; it took Pearl Harbor to wake us up; it took 9/11 to wake s up to the threat of global terrorism and now we face the extinction of life on our planet it we don’t wake up to the threat of severe climate change. (I prefer that to global warming) This nation is based upon capitalism or maximizing profits and that will be our downfall. In order to alter this course toward disaster, those global corporations responsible for polluting our planet along with those other countries who continue to pollute at an alarming rate must be convinced to change their policies. With profit at stake, there’s little chance of this happening. Too much money will be lost to clean up our mess and after all, profits are more important than saving our planet. Sad.

    Reply
  7. Kitt   June 7, 2014 at 4:59 am

    True or Not true. Stop warning us and stop spending money on “RESEARCHERS” who would say anything that supported taking our taxes to line their pockets. If we need to do something, pay to get it done, if not – how about SHUT UP AND GET ON WITH YOUR LIFE. I am busy trying to feed my family.

    Reply
  8. Mujib Rehman   April 3, 2014 at 8:28 am

    Do these people mean that the Earth’s temperature is not rising, the Polar Ice is not melting, the sea-level is not rising and that almost half of the island nation of Maldives has not gone under water in the last two decades? Well, you can wake a man who is asleep, but you can never wake one who pretends to be sleeping!!!

    Reply
  9. Anton   March 31, 2014 at 10:59 am

    I read an excerpt from the book “The Deliberate Corruption of Climate Science”
    by Tim Ball who is a climate scientist of 40 years and he totally refutes GW as an unscientific hoax.

    Reply
  10. pedro   March 31, 2014 at 7:56 am

    Climate change is a serious concern and the facts are worth reporting but you lost me when you got the snow cover section and not enough snow for santa’s home. Stick to the truth if you want be taken seriously.i

    Reply
    • gary   March 31, 2014 at 10:46 am

      That’s because Santa isn’t real and neither is global warming

      Reply
  11. D.Nier   March 30, 2014 at 10:32 pm

    should have the global warming scientists look for the MH370.
    that’s sarcasm in case you don’t realize it

    Reply
  12. wolfhheinl   March 30, 2014 at 4:36 pm

    Can you believe that comment from Mr. Harrison? He should have read Physics Today instead.

    Reply
    • gary   March 31, 2014 at 10:48 am

      I believe his comment more than i believe this article

      Reply
  13. Mark Harrison   March 29, 2014 at 5:34 pm

    Just stoopid! The same people that touted global warming in the 1990’s are the same ones who told us in National Geographic in the early 70’s that we would all freeze to death in the impending catastrophic ice age.I still have these editions at home.If you want to tell lies, please think of something a little more ridiculous. Climate change has always happend, if it stops THEN we really are in trouble. Which climate would these fools like to halt the climate in? Northern summer vs southern winter or maybe a sort of spring autumn thing for the whole planet! How about we work at solving the problems of deforestation which interrupt s rainfall patterns and leads to desertification, or the problems of oceanic pollution and overfishing, or perhaps the growing scourge of soil salinity and topsoil erosion. How about cleaning up nano particulate pollution in our cities that contributes to lung diseases. The increasing threat from psuedo estrogens in our food chain from plastics. How many species have been lost forever in the Amazon basin to the production of soya beans so that vegetarians can tells that going veg is good for the planet. Let’s all fly there in a solar powered A380 to do the research! Let’s do something to stop Monsanto from poisoning us with their Frankenstein crops or killing bees with the by products of glyphosate. This world has far bigger problems than a little bit extra CO2. The CO2 argument is nothing but a UN mandated grab for tax and the further impoverishment of those that can least afford it. Remember, the UN fight against poverty is to REDUCE EVERYONE’S standard of living, when all people except the ruling elite live in poverty they can claim that there is no more wealth inequality and therefore no more poverty! Common sense is all to devoid in these environmental debates and the world suffers for it.

    Reply
    • gary   March 31, 2014 at 10:47 am

      exactly!

      Reply

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