00517753

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瀬戸内海及び四国・九州南方での大気気中N_2Oの濃度観測

The measurement of N_2O concentration in the air in the Seto Inland Sea and southern offshore of the Shikoku and Kyushu Island

Japanese (日本語)

Review of the Faculty of Maritime Sciences, Kobe University

3

33-40

神戸大学海事科学部

2006-07-31

2007-03-13

本文ファイルは、国立情報学研究所CiNiiより提供されたものです。

Nitrous Oxide (N_2O) is one of the important gases of the green house gases. The average N_2O concentration of the global ocean is 320ppb. But it is not clear to the distribution of N_2O concentration in each place. We sampled the air continuously and measured N_2O concentration in the air during the navigation of the Seto Inland Sea and southern offshore of the Shikoku and Kyushu Island from 10th Sep 2005 until 16th. The average N_2O concentration of all the periods was 282ppb. The average N_2O concentration in the inland sea, Osaka Bay and the Seto Inland Sea and Kagoshima Bay, was 288ppb, and it in the open ocean, southern offshore of the Shikoku and Kyushu Island, was 256ppb. N_2O concentration in the inland sea is higher than that of the open ocean. The highest N_2O concentration area is Osaka Bay with 320ppb. When the wind blows from the urban area, N_2O concentration increases, and when the wind blows from the open ocean, N_2O concentration decreases.

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