Home Books eBooks Journals References & Proceedings Authors, Editors, Reviewers A-Z Product Index Awards
Energy and the Environment, 1999

ISSN:
1-56700-127-0 (Print)

ANALYSIS OF CONTINUOUS MONITORING DATA OF ATMOSPHERIC N20 CONCENTRATION IN JAPAN

A. Matsunami
Research Center for Advanced Energy Conversion, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, JAPAN

Y. Kamata
Research Center for Advanced Energy Conversion, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, JAPAN

Tomohiko Furuhata
Research Center for Advanced Energy Conversion,Nagoya University,Nagoya, 464-8603, Japan

Kuniyuki Kitagawa
Research Center for Advanced Energy Conversion,Nagoya University,Nagoya, 464-8603, Japan

Z. S. Zhao
Department of Civil Engineering, Maebashi Institute of Technology 460-1 Kamisatory-cho, Maebashi, 371-0816, JAPAN

Norio Arai
Research Center for Advanced Energy Conversion,Nagoya University,Nagoya, 464-8603, Japan

Abstract

It is among the currently most important problems that the ozone layer continues to be eroded to disappear. The ozone layer is possibly destroyed by NO produced from N2O as well as chlorofuloro carbons (CFCs). In addition, N20 in the atmosphere contributes to the greenhouse effect more significantly than C02 gas per molecule. This paper reports the results of FFT(Fast Fourier Transform) analysis and Folding analysis from continuous monitoring data at Nagoya University from January 1st to December 31st in 1996. The results show 1/f dependence together with 1.0 day periodicity and 2−5 day periodic structure. The former indicates an effect of human activities and the latter shows a characteristic eddy diffusion size scale of several hundred meters.