What are the man made causes of the changes to the weather?

Question

Please give me some

Answer 1

Humans have changed planet earth; we have done much harm. One of our accomplishments is to extract and burn most of the fossil fuel deposits on the planet. We have increased the concentrations of greenhouse gases in the atmosphere and are now observing the changes in weather patterns and climate that are a result of our actions.

The development of a renewed "green movement" in the media suggests that this is a relatively new concern and people who have ignored global warming of the past 30 years have had legitimate doubts. The fact is that some know what is really going on out there, but most people do not know or know but deny the obvious for selfish reasons.

Greenhouse gases are carbon dioxide, methane, nitrous oxide and chlorofluorocarbons (CFCs). These gases act like the glass covering a greenhouse, letting sunlight in but blocking some of the infrared radiation from the earth's surface that carries heat back into space. The gases act like a blanket wherever their concentration increases. Local concentrations increase local heat and increased differences between hotter and colder regions drives weather events into more extreme ranges.

Answer 2

There are several obvious man-made changes to the weather (other than global warming) that we can prove and define an exact scope of. Global warming is is almost certainly caused by humanity, but the scope of how bad it may be or what may change is not yet agreed on (we just know it'll be bad...)

1.) Smog. a combination of air pollution and fog, trapped near the ground (where you can breathe it). Worse, if a thermal inversion occurs (warm air on top of cold air), the smog can become trapped in an area. While the inversion is natural, the pollution being trapped in one place is not.

http://en.wikipedia.org/wiki/Smog

2.) The Dust Bowl. In the '30s, the US Midwest was struck by catastrophic dust storms, exacerbated by years of farming and removing grass that left the topsoil exposed to the air. The wind blew the topsoil up into the air, where it caused sickness and rendered large areas infertile. Tree plantings are used to break up high winds blowing across the plains, to help prevent this from occurring again. The dust storms reached across the Eastern half of the US, and the dust was deposited in the Atlantic.

http://en.wikipedia.org/wiki/Dust_bowl

3.) Humidity. When dams are built, lakes are created - in dry areas that have many lakes created, the air becomes more humid over time (this has occurred in North Texas and Oklahoma). Higher humidity can result in greater precipitation, and can affect the dew point/frost point and/or the amount of dew and frost that occurs.

http://en.wikipedia.org/wiki/Humidity