Statistical analysis of the increase in atmospheric CO2 concentrations and its relation to the possible existence of CO2 fertilization on a global scale
Tokyo Gakuen University, 1660, Hiregasaki, Nagareyama, Chiba Pref., Japan 270-01;, and Japan Weather Association, Fukuoka Head Office, 1-6-33, Oohori, Chuou-ku, Fukuoka Japan 810