Global Warming. Is it real ?

I received this E-Mail from a reader requesting me to blog about Global Warming.
I hope you are satisfy with the explanation below.

The greenhouse effect is a natural phenomenon, but human activities, like the burning of fossil fuels, can pour enormous volumes of these gases into the atmosphere, raising the planet’s temperature and destabilizing the climate.

Manmade greenhouse gases have contributed to hotter days and nights, and more of them, more killer heat waves than before, heavier rainfall more often, major droughts in more regions, stronger and more frequent cyclones and “increased incidence” of extremely high sea levels.




Image Hosted by ImageShack.us



1. Introduction

The greenhouse effect is responsible for the Earth’s warm, livable atmosphere. Gases like methane and carbon dioxide trap heat near the surface, keeping the Earth about 33 C (60 F) warmer than it would be without its natural blanket of protective gas. The greenhouse effect is a natural phenomenon, but human activity can enhance its effect and destabilize the climate.

2. Gases

Water vapor, methane, carbon dioxide, CFCs, ozone and nitrous oxide are all greenhouse gases (GHGs). Carbon dioxide (CO2) is the most important, followed in descending order by methane, CFCs, ozone and nitrous oxide.

Climate scientists say human activities that pour enormous volumes of these gases into the atmosphere are raising the planet’s temperature.

3. Sun

The sun sends energy toward Earth in the form of light and radiation. We experience solar radiation as light and warmth on a sunny day

4. Atmosphere

When the sun’s rays strike the atmosphere, some of the radiation is immediately reflected into space.

The radiation that gets through the atmosphere heads toward the Earth’s surface.



5. Earth

Solar radiation that passes through the Earth’s clear atmosphere is absorbed by the ground, water, plants and other objects. As the sun warms objects, they emit infrared radiation. This is the energy we know as heat.

A portion of the solar radiation that reaches the Earth’s surface — particularly areas covered by ice, snow or the ocean — also bounces back into space, where its heat energy dissipates.

6. Heat and gases

Molecules of greenhouse gases in the atmosphere absorb infrared radiation and release heat, which raises the temperature of the ground and air and warms the Earth’s surface.

Infrared radiation has a longer wavelength than visible light, so it is easier for molecules like carbon dioxide and water vapor to absorb energy and trap the sun’s energy beneath Earth’s atmosphere.

7. Into space

Some infrared radiation continues on its path out of the atmosphere and into space.

The energy the sun sends to the entire Earth averaged over a whole year is roughly 343 watts per square meter. When that energy hits the Earth’s surface, some of it is absorbed and some of it is reflected back into the atmosphere.The net outgoing energy — that is, radiation that goes back into space — is 240 of the original 343 watts per square meter.


Image Hosted by ImageShack.us


Image Hosted by ImageShack.us

 

  1. Anonymous Anonymous said,

    10:02 PM

    I am getting very hot now

  2. Blogger clement said,

    7:06 AM

    naked gals is nice~

  3. Blogger lina123 Chen said,

    2:10 PM

    chenlina20150624
    true religion
    michael kors outlet online
    cheap oakleys
    christian louboutin outlet
    mont blanc mountain
    pandora uk
    adidas outlet
    coach factory outlet
    michael kors handbags
    toms shoes
    abercrombie kids
    hollister clothing store
    ray ban sunglasses
    louis vuitton outlet
    louis vuitton handbags
    soccer jerseys
    ray ban sunglasses
    coach outlet online
    louis vuitton outlet
    cheap jordans
    jordan 11 columbia
    hollister kids
    gucci shoes
    coach outlet
    knockoff watches
    prada handbags
    coach outlet online
    ray ban sunglasses
    michael kors outlet online
    discount oakley sunglasses
    imitation watches
    aviator sunglasses
    coach outlet
    beats studio
    true religion
    toms wedges
    prada sunglasses
    hollister jeans
    air max 95
    red timberland boots

  4. Blogger chenlina said,

    3:12 PM

    chenlina20151228
    adidas superstars
    cheap ugg boots
    louis vuitton outlet stores
    adidas originals
    cheap nfl jerseys
    cheap oakley sunglasses
    toms outlet
    prada handbags
    louis vuitton outlet
    replica watches
    oakley sunglasses
    uggs outlet
    timberland outlet
    coach outlet store online
    giuseppe zanotti
    ralph lauren outlet
    polo ralph lauren outlet
    michael kors outlet online
    cheap air jordans
    michaek kors handbags
    louis vuitton outlet
    michael kors outlet
    north face jackets
    ugg australia
    celine outlet
    michael kors outlet online
    louis vuitton outlet
    coach outlet
    kate spade handbags
    running shoes
    uggs outlet
    oakley sunglasses
    canada goose jackets
    ugg sale
    true religion jeans outlet
    coach outlet online
    oakley sunglasses
    air max uk
    cheap oakley sunglasses
    nike huarache shoes
    as

4 Comments:

Post a Comment