Ilmastonkäänne

Ilmastonkäänne refers to a significant shift or turning point in the Earth's climate. This term can encompass both natural climate variations and those driven by human activities. Historically, the Earth has experienced numerous natural climate changes, such as ice ages and interglacial periods, driven by factors like variations in solar radiation, volcanic activity, and changes in ocean currents.

In contemporary discourse, ilmastonkäänne is often used in the context of anthropogenic climate change, specifically referring to the point at which human-induced warming becomes irreversible or triggers runaway effects. This could involve crossing critical thresholds that lead to abrupt and profound alterations in global weather patterns, sea levels, and ecosystems. Scientists monitor various indicators, such as rising global temperatures, melting glaciers and ice sheets, and increasing frequency of extreme weather events, to assess the progress and potential impacts of such a climate shift. Understanding ilmastonkäänne is crucial for developing effective strategies to mitigate climate change and adapt to its consequences. The concept highlights the urgency and potential severity of the current climatic trajectory.