A study from the University of Washington is using a new method for analyzing the California redwood trees’ oxygen and carbon content to detect fog and rainfall from the past 50 years. Redwoods are not good for tree ring dating because their rings don’t develop as well as other trees. But the new method looks at molecules captured in the wood to sample the atmosphere of the past. By analyzing the proportion of different molecules in the wood from each season they can measure the contribution of fog and rain. They can then tell the particular combination of the two that occurred during a given time which reveals information about long-term ocean change, which will help better distinguish between natural and human-caused climate change.
[ Read the Article: California Redwoods Hold Hidden History Of Coastal Climate ]