Each year, trees add a new layer of growth between the older wood and the bark. The size of this layer, or tree ring as seen in cross-section, tells us about the speed of growth and reflects environmental conditions — such as temperature, moisture and even cloudiness — at the time of growth. Tree rings usually grow wider during warm periods and narrower during cold ones. Since some trees live for many centuries and, in some cases, for thousands of years, we can reconstruct temperature and other climate records dating back several hundred years, providing valuable information on how Earth’s climate looked in the past.
German artist Bartholomaus Traubeck designed “a record player that plays slices of wood. Year ring data is translated into music”.
Listen to Years.