People living in Texas experienced a miserably hot summer in 2011. In fact, it was the hottest the state had ever recorded. Earlier that spring, much of East Africa was so dry that farmers had trouble. Global warming helped trigger heat waves and droughts last year. Scientists have now concluded that these extreme weather episodes, half a world apart, were among several known events caused at least partly by global warming. Some human activities, like driving cars and operating factories, spew carbon dioxide and other pollutant gases into the atmosphere. These gases slowly warm the planet like a low grade fever through a process known as the greenhouse effect. It might seem obvious that global warming would contribute to hot, dry weather. But scientists cannot assume the two are linked. Climate change is a slow process that happens over decades or centuries. Because we’ve burned a lot of fossil fuels and deforested parts of the planet, we’ve increased the amount of greenhouse gases, since we have done that it is causing the temperature to change throughout the planet, which isn't good.
Here’s what the meteorology behind the unusual winter weather that hit the United States is all about. This picture here was the climate change after new years in Florida, which isn't right, Florida simply doesn't get that cold. But, this U.S winter is not typical by then every U.S state recorded snow, even Hawaii?! The jetstream is a river of air in the upper atmosphere. It races from regions of warmth to those that are cold. It’s the atmosphere’s way of balancing temperature differences. Sometimes, when this river of air snakes too far south, it can drag cold air with it. That’s how a chunk of Arctic air managed to sneak all the way down to the Gulf Coast. So, these conditions in the atmosphere come at a localized place and a particular time.
Arctic warming is affecting weather farther south, where most of the world lives. The impacts are especially worrisome for agriculture. Big changes in the arctic are affecting weather across North America, Europe, and Asia. Earth is getting warmer. Since 1880, when scientists began collecting accurate global measurements, the average temperature across our planet has risen about 0.85°. Normally we associate the far north with extreme cold. However, Arctic temperatures have risen about twice as much as the global average since 1880. That abnormal rate of warming is shaking things up at the North Pole. It also may be causing problems much farther south, in more populated regions that are important for farming, scientists say.
This article is saying that global warming is now firmly linked to a carbon dioxide rise from human activities. Global warming is a gradual increase in the overall temperature of earth's atmosphere which is due to the Greenhouse effect. The greenhouse is a light filled structure where plants are grown, it provides a controlled environment in which sets amounts of water, humidity, and nutrients can be applied. The greenhouse gas contributes to the greenhouse effect by absorbing heat, and carbon dioxide is one ex. of a greenhouse gas.