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Related Concept Videos

Global Climate Change01:50

Global Climate Change

Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
What is Climate?01:16

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Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
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Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
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Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
Phase Transitions: Melting and Freezing02:39

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Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...

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Using Generative Art to Convey Past and Future Climate Transitions
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Published on: March 31, 2023

Arctic climate tipping points.

Timothy M Lenton1

  • 1College of Life and Environmental Sciences, Hatherly Laboratories, University of Exeter, Exeter EX4 4PS, UK. t.m.lenton@exeter.ac.uk

Ambio
|January 25, 2012
PubMed
Summary
This summary is machine-generated.

Global warming risks triggering Arctic climate tipping points. Understanding past changes and current systems helps identify vulnerable elements and assess warming thresholds for avoiding irreversible impacts.

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Area of Science:

  • Climate Science
  • Arctic Studies
  • Environmental Science

Background:

  • Anthropogenic global warming raises concerns about Arctic climate tipping points.
  • The Arctic has experienced natural, abrupt climate shifts historically.
  • Current observations and model projections inform potential future tipping points.

Purpose of the Study:

  • Define Arctic climate tipping points, acknowledging not all lead to irreversible change.
  • Review past abrupt Arctic climate changes.
  • Identify and assess potential future Arctic climate tipping elements.

Main Methods:

  • Review of historical Arctic climate changes.
  • Summarization of current Arctic system behaviors.
  • Description of potential future tipping phenomena and assessment of warming thresholds.

Main Results:

  • A revised and expanded list of potential Arctic climate tipping elements has been developed.
  • The likelihood of these tipping elements is assessed based on required warming.
  • Potential tipping phenomena are described based on current system behaviors.

Conclusions:

  • Understanding past and present Arctic climate dynamics is crucial for identifying future tipping points.
  • Assessing the warming thresholds for tipping elements is key to mitigation strategies.
  • Exploring response options is vital for avoiding catastrophic Arctic climate shifts.