Our Big Concern: Global Energy

Yamill Ortiz Marcano

This is an essay that it’s not directed to the physics class, but is a problem that involved everyone in the world and is concerning the people year by year and day by day. Each day when I’m walking to college I feel the heat and the high temperatures, like 1000F or higher and the only thing that I want to do is been in the beach or in some place with air conditioner. After some researches I have find the following. Global warming is the observed and projected increase in the average temperature of Earth's atmosphere and oceans that became apparent by the latter half of the 20th century. The Earth's average near surface atmospheric temperature rose 0.6° Celsius or 1.1° Fahrenheit in the 20th century.

The scientific consensus on global warming has been summarized by the IPCC: In the light of new evidence and taking into account the remaining uncertainties, most of the observed warming over the last 50 years is likely to have been due to the increase in greenhouse gas concentrations. Only a small minority of climate scientists disagree that humanity's actions have played a major role in recent warming. The largest contributing source of greenhouse gas is burning of fossil fuels by humans. Greenhouse gases are those that contribute to the greenhouse effect.

Increasing global temperatures are expected to cause a broad range of changes. Sea levels are expected to rise by about 0.5m by 2100, due to thermal expansion of the ocean, in addition to melting of land ice. Changes in temperature and precipitation patterns are likely to increase the frequency, duration, and intensity of other extreme weather events, such as floods, droughts, heat waves, and tornadoes. The total annual power of hurricanes has already increased markedly since the mid-1970's—because their average intensity and average duration have increased in addition, hurricane power was observed to be highly correlated with tropical sea-surface temperature. Other consequences may include altered agricultural yields, further glacial retreat, reduced summer stream flows, species extinctions and increases in the ranges of disease vectors. Although warming is expected to affect the number and magnitude of these events, it is difficult to connect specific events to global warming.

I hope that we can find a solution to this problem as soon as possible, because maybe it don’t affect us right now, but in the future this will be a very serious problem that can affect the humanity and can disappear some specifics island, like the case of Puerto Rico, if the water increased over the sea level our island doesn’t will be on the map forever. Now is up to the humans to contribute to the world and the environment in different ways. Some strategies that we can use is recycling or create other types of energy that don’t cause damaged to the earth like solar energy, green energy and others energy can solve this big problem.