Grant-in-Aid for Young Scientists (B)
A total of 21 core samples collected from living and dead trees of Japanese ceder in Yakushima Island were used to construct a 1772-year tree-ring oxygen isotope chronology. Response analysis with ambient meteorological stations indicated that the oxygen isotope ratios of this chronology were significantly and negatively correlated with relative humidity and amounts of precipitation. Overall, a relatively dry (wet) condition was found in the Medieval Warm Period (the Little Ice Age). In addition, a notable drying trend was identified in the 20th century.
Int'l Joint Research
Trees - Structure and Function
Journal of Geophysical Research-Atmosphere
Journal of Hydrology
Volume: in press
Attribution of KAKENHI