Climate Change Ninety-seven percent of climate scientists agree that climate-warming trends over the past century are very likely due to human activities.

Glossary:

Ocean acidification: Since the start of the Industrial Revolution, the acidity of the ocean surface has increased about 30%

Sea level rise: Global sea level rose about 17 centimeters (6.7 inches) in the last century. The rate in the last decade, however, is nearly double that of the last century.

Warming oceans: The oceans have absorbed much of this increased heat, with the top 700 meters (about 2,300 feet) of ocean showing warming of 0.302 degrees Fahrenheit since 1969.

Shrinking ice sheets: The Greenland and Antarctic ice sheets have decreased in mass.

Declining Arctic sea ice: Both the extent and thickness of Arctic sea ice has declined rapidly over the last several decades.

Extreme events: The number of record high temperature events in the United States has been increasing, while the number of record low temperature events has been decreasing, since 1950.

What do volcanoes have to do with climate change?

Overall, volcanoes release about 5 percent of the equivalent amount of CO2 released by humans. Small but it happens about once every 20 years there is a volcanic eruption that throws out a tremendous amount of particles and other gases. These will effectively shield us enough from the sun to lead to a period of global cooling. The particles and gases typically dissipate after about 2 years, but the effect is nearly global.

The current warming trend is of particular significance because most of it is very likely human-induced and proceeding at a rate that is unprecedented in the past 1,300 years.1
How does climate change affect coral reefs?

Warmer water temperatures brought on by climate change stress corals because they are very sensitive to changes in temperature. If water temperatures stay higher than usual for many weeks, the zooxanthellae they depend on for some of their food leave their tissue. Without zooxanthellae, corals turn white because zooxanthellae give corals their color. White, unhealthy corals are called bleached. Bleached corals are weak and less able to combat disease.

Evidence: Global sea level rose about 17 centimeters (6.7 inches) in the last century. The rate in the last decade, however, is nearly double that of the last century

What role has the sun played in climate change in recent decades?

The sun provides the primary source of energy driving Earth's climate system, but its variations have played very little role in the climate changes observed in recent decades. Direct satellite measurements since the late 1970s show no net increase in the sun's output, while at the same time global surface temperatures have increased.

The oceans have absorbed much of this increased heat, with the top 700 meters (about 2,300 feet) of ocean showing warming of 0.302 degrees Fahrenheit since 1969.
Shrinking Ice Sheets: The Greenland and Antarctic ice sheets have decreased in mass. Data from NASA's Gravity Recovery and Climate Experiment show Greenland lost 150 to 250 cubic kilometers (36 to 60 cubic miles) of ice per year between 2002 and 2006, while Antarctica lost about 152 cubic kilometers (36 cubic miles) of ice between 2002 and 2005.
Glacial Retreat: Glaciers are retreating almost everywhere around the world — including in the Alps, Himalayas, Andes, Rockies, Alaska and Africa

Works Cited:

http://www.usatoday.com/story/news/nation/2014/02/27/climate-change-q-and-a-guide/5861621/?scrlybrkr=9f70ec33

https://climate.nasa.gov/evidence/

http://www.nwf.org/Eco-Schools-USA/Become-an-Eco-School/Pathways/Climate-Change/Facts.aspx

https://blogs.scientificamerican.com/cross-check/climate-change-facts-versus-opinions/

http://www.climateactionreserve.org/resources/climate-change-facts/

http://www.msnbc.com/msnbc/7-scary-facts-about-climate-change?scrlybrkr=0092a824

Credits:

Created with images by Unsplash - "glacier ice snow" • Unsplash - "water iceberg ice" • NASA Earth Observatory - "Mount St. Helens from Space, 1979-2011" • Pexels - "water corals underwater" • CECAR - Climate and Ecosystems Change Adaptation R - "Ocean and climate change" • Kevin Krejci - "Man and Beach" • NASA Goddard Photo and Video - "glassy sea ice with iceberg" • Glyn Lowe Photoworks. - "Jökulsárlón Glacier lagoon Beach"

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