Climate Change

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Across
  1. 4. The current warm, stable interglacial geological epoch that began around 11,700 years ago following the retreat of the last ice age.
  2. 5. The widespread shrinking and melting back of valley glaciers and continental ice caps due to rising global baseline temperatures.
  3. 12. The older division of the Quaternary period, lasting until roughly 11,700 years ago, characterised by global cooling and major glacial advances.
  4. 14. The primary anthropogenic greenhouse gas, largely emitted through the combustion of fossil fuels and widespread deforestation.
  5. 15. The ongoing geological time period spanning from 2.6 million years ago to the present day, defined by widespread climate cycling and ice ages.
  6. 17. Dark patches of intense magnetic activity on the sun's surface that fluctuate on an 11-year cycle, slightly increasing solar energy output.
  7. 18. Greenhouse gases and pollutants released directly into the atmosphere by human industrial, agricultural, and urban activities.
  8. 20. Proactive policy actions and technological adjustments aimed at reducing greenhouse gas emissions or enhancing carbon sinks to slow climate change.
  9. 21. The warming of the global climate system caused by human emissions raising greenhouse gas levels, trapping excess heat energy.
  10. 22. Any natural reservoir—such as permafrost or deep ocean sediment—that captures and stores massive amounts of organic carbon, keeping it out of the atmosphere.
  11. 23. A potent greenhouse gas released via anaerobic decomposition pathways, prominent in livestock farming, rice paddy cultivation, and decomposing landfills.
Down
  1. 1. A highly potent greenhouse gas released predominantly into the atmosphere through the use of synthetic agricultural fertilizers and industrial manufacturing.
  2. 2. The physical expansion of ocean water volume as it absorbs atmospheric heat energy, acting as a major driver of global sea-level rise.
  3. 3. The cyclic variation in the shape of Earth's orbit around the sun, transitioning from a near-perfect circle to an oval shape over a 100,000-year cycle.
  4. 6. A prolonged cold phase within an ice age lasting roughly 100,000 years, during which continental ice sheets expand to cover vast landmasses.
  5. 7. Practical adjustments made by societies and infrastructure networks to increase resilience and reduce vulnerability to unavoidable climate impacts.
  6. 8. A brief period of global cooling triggered when massive explosive volcanic eruptions blast sulfur dioxide and ash particles high into the stratosphere, reflecting sunlight away.
  7. 9. Long-term variations in the Earth's orbit—including eccentricity, obliquity, and precession—that alter the distribution of solar energy and drive ice age cycles.
  8. 10. The natural process where atmospheric trace gases absorb and re-emit longwave thermal radiation from Earth's surface, trapping heat to stabilize temperatures.
  9. 11. The cyclic tilt variation of Earth's axis relative to its orbital plane, shifting between 22.1° and 24.5° over a 41,000-year period to alter seasonal intensity.
  10. 13. Cylindrical samples drilled from deep within polar ice sheets that contain trapped paleosphere air bubbles, allowing scientists to reconstruct ancient atmospheric gas levels.
  11. 16. A temporary, warmer climatic interval lasting roughly 10,000 years between major glacial periods, when global ice sheets retreat.
  12. 19. The slow top-like wobble of the Earth's rotational axis over a 26,000-year cycle, changing the timing of seasons relative to the sun.