The Daily Planet Book of Cool Ideas - Global Warming and what People
are doing about it. by Jay Ingram.
1. The world has always warmed and cooled
2. It is definately
in a warming trend right now.
3. Question: is it warming faster than ever before.
Warning Signs and data:
ICE - disapearing glaciers
2. England - Recorded Temperature records exist since 1659
3. Art & Literature
eg. Annual Grape harvest times; writings and paintings, eg. Painting of frozen Thames river illustrates and verifies the little
Ice Age in Europe from 1683-84.
4 Tree rings
5. Ice core samples.
1. When data is crunched
the earths temperature chart from the year 100 to present resembles a hockey stick. It is relatively stable until present
and then there is extreme upward rise. The chart resembles a hockey stick with the puck end oriented and pointed up at present.
The Keeling graph. When CO2 levels was recorded in Hawaii between 1960 and the present a definate increase was observed. The
grenhouse effect has been hypothesized over a 100 years ago. It is a well known phenomena.
Major players in climate
1 Green house effect. Atmospheric changes caused by volcano, fires, pollution.
2. The Sun: from 1300-1800
the sun spot activity went down and so did the earth's temperature. The sun's output is therefore not constant. In
the next few years the sun will have reduced numbers of sun spots and this is expected to help compensate for the global warming
effects. When the sun's activity resumes however the temperature may spike dangerously high.
3. Cosmic Rays: Radio
waves from space are known to increase cloud cover.
4. The earth's tilt. As the earth cycles through different wobbles
and orientations w.r.t. sun the angle of solar radiation changes and effects overall temperature.
5. Volcanoes: It has
been observed that during major volcanoes the earths average temperature can go down by 0.5°C. The carbon from volcano
causes heating but the sulphates from the same volcano more than compensates for carbon and the temperature actually goes
6. Piollution: SO2 causes a colling effect. Soot and carbon causes a warming effect. The soot also darkens snow
causing increased melting of glaciers.