The seas in which corals and other calcifying species dwell are turning acidic, their pH slowly dropping as Earth's oceans acidify in response to increased carbon dioxide...
Climate Change PerceptionsLast Updated on 2014-11-20 11:03:33
The Perception Factor: Climate Change Gets Personal
This article, written by Catherine M. Cooney, appeared first in Environmental Health Perspectives—the peer-reviewed, open access journal of the National Institute of Environmental Health Sciences.
The article is a verbatim version of the original and is not available for edits or additions by Encyclopedia of Earth editors or authors. Companion articles on the same topic that are editable may exist within the Encyclopedia of Earth.
Summer 2010 saw a new suite of climate change studies from the National Academy of Sciences (NAS) with the stark conclusion that “Climate change is occurring, is caused largely by human activities, and poses significant risks for—and in many cases is already affecting—a broad range of human and natural systems.”1 The NAS series received a boost from separate research... More »
Ecosystems and Human Well-Being: Volume 1: Current State and Trends: Air Quality and ClimateLast Updated on 2014-11-17 12:15:25
This is Chapter 13 of the Millenium Ecosystem Assessment report Ecosystems and Human Well-Being: Volume 1: Current State and Trends
Coordinating Lead Authors: Jo House, Victor Brovkin
Lead Authors: Richard Betts, Bob Constanza, Maria Assunçao Silva Dias, Beth Holland, Corinne Le Quéré, Nophea Kim Phat, Ulf Riebesell, Mary Scholes
Contributing Authors: Almut Arneth, Damian Barratt, Ken Cassman, Torben Christensen, Sarah Cornell, Jon Foley, Laurens Ganzeveld, Thomas Hickler, Sander Houweling, Marko Scholze, Fortunat Joos, Karen Kohfeld, Manfredi Manizza, Denis Ojima, I. Colin Prentice, Crystal Schaaf, Ben Smith, Ina Tegen, Kirsten Thonicke, Nicola Warwick
Review Editors: Pavel Kabat, Shuzo Nishioka
Ecosystems, both natural and managed, exert a strong influence on climate and air quality. Ecosystems are both sources and sinks of greenhouse gases,... More »
Climate adaptationLast Updated on 2014-11-17 12:07:20
The global climate disruptions underway require two types of responses. Both the Stern Review (2007) and the IPCC Climate Change (2007) point out that strong action on climate change, includes both mitigation and adaptation. The IPCC uses the following definitions: Mitigation: An anthropogenic intervention to reduce the sources or enhance the sinks of greenhouse gases (IPCC, 2001); Adaptation: Adjustment in natural or human systems in response to actual or expected climatic stimuli or their effects, which moderates harm or exploits beneficial opportunities (IPCC, 2001). From these definitions it follows that mitigation reduces all impacts (positive and negative) of climate change and thus reduces the adaptation challenge, whereas adaptation is selective; it can take advantage of positive impacts and reduce negative ones.
The former, climate change mitigation, is the more widely... More »
Climate Literacy- The Essential Principles of Climate SciencesLast Updated on 2014-11-15 15:52:27
View online here or download the PDF: High Resolution (14.67MB) or Low Resolution (2.92MB)
If you would like more detailed coverage of this topic please see The Climate Literacy Handbook
Climate Science Literacy is an understanding of your influence of climate and climate's influence on you and society.
understands the essential principles of Earth's climate system,
knows how to assess scientifically credible information about climate,
communicates about climate and climate change in a meaningful way, and
is able to make informed and responsible decisions with regard to actions that may affect climate.
During the 20th century, Earth's globally averaged surface temperature rose by approximately 1.08°F (0.6°C). Additional warming of more than 0.25°F (0.14°C) has been measured since 2000. Though the total increase may seem small, it... More »
Agriculture and Climate ChangeLast Updated on 2014-11-15 15:30:18The agriculture sector is a source of greenhouse gas (GHG) emissions, which many scientists agree are contributing to observed climate change. Agriculture is also a “sink” for sequestering carbon, which might offset GHG emissions by capturing and storing carbon in agricultural soils. The two key types of GHG emissions associated with agricultural activities are methane (CH4) and nitrous oxide (N2O). Agricultural sources of CH4 emissions mostly occur as part of the natural digestive process of animals and manure management at livestock operations; sources of N2O emissions are associated with soil management and fertilizer use on croplands. This article describes these emissions on a carbon-equivalent basis to illustrate agriculture’s contribution to total national GHG emissions and to contrast emissions against estimates of sequestered carbon.
Emissions from... More »
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