Download PDF by Dana Desonie: Climate: Causes and Effects of Climate Change (Our Fragile

By Dana Desonie

ISBN-10: 0816062145

ISBN-13: 9780816062140

ISBN-10: 1438105649

ISBN-13: 9781438105642

Although weather switch is common in Earth's historical past, worldwide warming has raised usual temperatures to their optimum in millennia, leading to melting ice caps, shorter winters, adjustments within the seasonal behaviors of animals, and extra severe climate. And notwithstanding greenhouse gases are crucial for maintaining the planet's temperatures cozy, fossil gas burning and different human actions are expanding greenhouse fuel degrees and inflicting temperatures to upward push. whereas a decade in the past many scientists have been skeptical that human actions may impression the weather method, their versions now convey that simply human actions can account for the value of adjustments being visible. "Climate" is a well timed new ebook that discusses the problem of worldwide warming and what we will do to avoid its upward push. hugely visible and written in a transparent, available demeanour, this e-book adresses how humans needs to use power extra successfully, advance replacement power assets, and reduce emissions applied sciences.

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Additional info for Climate: Causes and Effects of Climate Change (Our Fragile Planet)

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CO2 has fluctuated from between less than 200 ppm to greater than 5,000 ppm, a high concentration reached hundreds of millions of years ago. Ice core and other samples show that greenhouse gas levels correlate with temperatures: When CO2 or methane levels are high, temperatures are also high. Paleocene-­Eocene Thermal Maximum After the mass extinctions at the end of the Cretaceous Period, 65 million years ago, the planet was relatively warm and ice free. Temperatures rose until they became so high they triggered an even greater warming event around 55 million years ago.

Because satellites see a large and clear picture from high above Earth’s surface, they are extremely important for chronicling global climate change. Satellites have gathered decades’ worth of information on pollution, fires, ocean temperature, ocean current patterns, ice boundar-­ ies, volcanic ash clouds, and many other ­ climate-­related features. For example, images gathered each year for two decades detail the loss of ice cover during Arctic summers over that time period. Climate Proxies Paleoclimatologists (paleoclimatology is the study of past climate) have developed many innovative techniques for getting information about the history of Earth’s climate.

The dominant man-­ made source of greenhouse gases is the burning of fossil fuels and biomass (living matter). This chapter also discusses other human activities that alter Earth’s climate, including deforestation (the removal of trees), urbanization (the replacement of natural surfaces with impermeable man-­made surfaces), and air pollution. GreenhoUse Gases Like natural processes, human activities remove carbon from reservoirs where it has long been sequestered and send it into the atmosphere.

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Climate: Causes and Effects of Climate Change (Our Fragile Planet) by Dana Desonie

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