Overview of surface ozone variability in East Asia-North Pacific region during IGAC/APARE(1994—1996)

被引：3

作者：

K.S. Lam

T.J.Wang

T. Wang

J. Tang .

Y.Kajii

C.M. Liu

S.G. Shim

机构：

[1] Beijing 100081

[2] China

[3] Chinese Academy of Meteorological Science

[4] Department of Atmospheric Science

[5] Environmental Engineering Unit

[6] Global Environmental Research Center Department of Civil and Structural Engineering

[7] Hong Kong

[8] Japan

[9] Korea Institute of Science and Technology

[10] Nanjing 210093

[11] Nanjing University

[12] Research Center for Advanced Science and Technology

[13] Seoul

[14] South Korea

[15] Taipei

[16] The Hong Kong Polytechnic University

[17] University of Tokyo

[18] “National” Taiwan University

来源：

Journal of Environmental Sciences | 2004年 / 04期

关键词：

surface ozone; trajectory; transport; photochemistry;

D O I：

暂无

中图分类号：

X55 [海洋污染及其防治];

学科分类号：

071012 ; 0713 ; 083002 ;

摘要：

Surface ozone(O\-3) was measured at Oki Island(Japan), Cheju Island(South Korea), Lanyu Island(Taiwan Province, China), Cape D’Aguilar(Hong Kong SAR) and Lin’an, Longfenshan, Waliguan(China mainland) during January 1994—December 1996 as a component of IGAC/APARE(International Global Atmospheric Chemistry/East Asia-North Pacific Regional Experiment). This paper gave a joint discussion on the observational results at these stations over the study region. Investigations showed that the average of surface O 3 mixing ratios at the seven sites are 47.9±15.8, 48.1±17.9, 30.2±16.4, 31.6±17.5, 36.3±17.5, 34.8±11.5 and 48.2±9.5 ppbv, respectively. Significant diurnal variations of surface O 3 have been observed at Oki, Cheju, D’Aguilar, Lin’an and Longfenshan. Their annual averaged diurnal differences range from 8 to 23 ppbv and differ in each season. Surface O 3 at Lanyu and Waliguan do not show strong diurnal variability. Seasonal cycles of surface O 3 showed difference at the temperate and the subtropical remote sites. Oki has a summer minimum-spring maximum, while Lanyu has a summer minimum-autumn maximum. The suburban sites at D’Aguilar and Lin’an report high-level O 3 in autumn and low level O 3 in summer. Surface O 3 remains high in autumn and low in winter at the rural site Longfenshan. For the global background station Waliguan, surface O 3 exhibits a broad spring-summer maximum and autumn-winter minimum. The backward air trajectories to these sites have shown different pathways of long-range transport of air pollution from East Asia Continent to North Pacific Ocean. Surface O 3 was found to be strongly and positively correlated with CO at Oki and Lanyu, especially in spring and autumn, reflecting the substantial photochemical buildup of O\-3 on a regional scale. It is believed that the regional sources of pollution in East Asia have enhanced the average surface O 3 concentrations in the background atmosphere of North Pacific.

引用

页码：599 / 609

页数：11