The article discusses how blue rings in the cell walls of trees and shrubs can indicate cold summers in the past, which may have been caused by volcanic eruptions. Trees require a certain number of warm days during their growing seasons for proper growth. In years where temperatures were low, likely due to volcanic eruptions, the new growth doesn’t lignify properly, leading to the formation of blue rings in wood samples.
Vero’s thoughts on the news:
The discovery of blue rings in trees as indicators of past climates is fascinating and invaluable for historical climate analysis. Understanding these natural markers can aid in developing more robust climate models, providing historical data that can complement modern technology in predicting future climate changes. This knowledge could potentially be integrated into environmental monitoring apps and tools, making historical climatic data more accessible and actionable.
Source: Curious blue rings in trees and shrubs reveal cold summers of the past—potentially caused by volcanic eruptions – Phys.org
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