Characteristics of surface O3 over Qinghai Lake area in Northeast Tibetan Plateau, China

Zhenxing Shen; Junji Cao; Leiming Zhang; Zhuzi Zhao; Jungang Dong; Linqing Wang; Qiyuan Wang; Guohui Li; Suixin Liu; Qian Zhang

doi:10.1016/j.scitotenv.2014.08.104

Characteristics of surface O₃ over Qinghai Lake area in Northeast Tibetan Plateau, China

Zhenxing Shen
, Junji Cao
, Leiming Zhang
, Zhuzi Zhao
, Jungang Dong
, Linqing Wang
, Qiyuan Wang
, Guohui Li
, Suixin Liu
, Qian Zhang

School of Energy and Power Engineering

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Surface O₃ was monitored continuously during Aug. 12, 2010 to Jul. 21, 2011 at a high elevation site (3200m above sea level) in Qinghai Lake area (36°58'37'N, 99°53'56'E) in Northeast Tibetan Plateau, China. Daily average O₃ ranged from 21.8ppbv to 65.3ppbv with an annual average of 41.0ppbv. Seasonal average of O₃ followed a decreasing order of summer>autumn>spring>winter. Diurnal variations of O₃ showed low concentrations during daytime and high concentrations during late night and early morning. An intensive campaign was also conducted during Aug. 13-31, 2010 to investigate correlations between meteorological or chemical conditions and O₃. It was found that O₃ was poorly correlated with solar radiation due to the insufficient NO_x in the ambient air, thus limiting O₃ formation under strong solar radiation. In contrast, high O₃ levels always coincided with strong winds, suggesting that stratospheric O₃ and long range transport might be the main sources of O₃ in this rural area. Back-trajectory analysis supported this hypothesis and further indicated the transport of air masses from northwest, northeast and southeast directions.

Original language	English
Pages (from-to)	295-301
Number of pages	7
Journal	Science of the Total Environment
Volume	500-501
DOIs	https://doi.org/10.1016/j.scitotenv.2014.08.104
State	Published - 1 Dec 2014

Keywords

High elevation site
O transport
Photochemical production
Tropospheric O

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10.1016/j.scitotenv.2014.08.104

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title = "Characteristics of surface O3 over Qinghai Lake area in Northeast Tibetan Plateau, China",

abstract = "Surface O3 was monitored continuously during Aug. 12, 2010 to Jul. 21, 2011 at a high elevation site (3200m above sea level) in Qinghai Lake area (36°58'37'N, 99°53'56'E) in Northeast Tibetan Plateau, China. Daily average O3 ranged from 21.8ppbv to 65.3ppbv with an annual average of 41.0ppbv. Seasonal average of O3 followed a decreasing order of summer>autumn>spring>winter. Diurnal variations of O3 showed low concentrations during daytime and high concentrations during late night and early morning. An intensive campaign was also conducted during Aug. 13-31, 2010 to investigate correlations between meteorological or chemical conditions and O3. It was found that O3 was poorly correlated with solar radiation due to the insufficient NOx in the ambient air, thus limiting O3 formation under strong solar radiation. In contrast, high O3 levels always coincided with strong winds, suggesting that stratospheric O3 and long range transport might be the main sources of O3 in this rural area. Back-trajectory analysis supported this hypothesis and further indicated the transport of air masses from northwest, northeast and southeast directions.",

keywords = "High elevation site, O transport, Photochemical production, Tropospheric O",

author = "Zhenxing Shen and Junji Cao and Leiming Zhang and Zhuzi Zhao and Jungang Dong and Linqing Wang and Qiyuan Wang and Guohui Li and Suixin Liu and Qian Zhang",

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year = "2014",

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doi = "10.1016/j.scitotenv.2014.08.104",

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AU - Shen, Zhenxing

AU - Cao, Junji

AU - Zhang, Leiming

AU - Zhao, Zhuzi

AU - Dong, Jungang

AU - Wang, Linqing

AU - Wang, Qiyuan

AU - Li, Guohui

AU - Liu, Suixin

AU - Zhang, Qian

PY - 2014/12/1

Y1 - 2014/12/1

N2 - Surface O3 was monitored continuously during Aug. 12, 2010 to Jul. 21, 2011 at a high elevation site (3200m above sea level) in Qinghai Lake area (36°58'37'N, 99°53'56'E) in Northeast Tibetan Plateau, China. Daily average O3 ranged from 21.8ppbv to 65.3ppbv with an annual average of 41.0ppbv. Seasonal average of O3 followed a decreasing order of summer>autumn>spring>winter. Diurnal variations of O3 showed low concentrations during daytime and high concentrations during late night and early morning. An intensive campaign was also conducted during Aug. 13-31, 2010 to investigate correlations between meteorological or chemical conditions and O3. It was found that O3 was poorly correlated with solar radiation due to the insufficient NOx in the ambient air, thus limiting O3 formation under strong solar radiation. In contrast, high O3 levels always coincided with strong winds, suggesting that stratospheric O3 and long range transport might be the main sources of O3 in this rural area. Back-trajectory analysis supported this hypothesis and further indicated the transport of air masses from northwest, northeast and southeast directions.

AB - Surface O3 was monitored continuously during Aug. 12, 2010 to Jul. 21, 2011 at a high elevation site (3200m above sea level) in Qinghai Lake area (36°58'37'N, 99°53'56'E) in Northeast Tibetan Plateau, China. Daily average O3 ranged from 21.8ppbv to 65.3ppbv with an annual average of 41.0ppbv. Seasonal average of O3 followed a decreasing order of summer>autumn>spring>winter. Diurnal variations of O3 showed low concentrations during daytime and high concentrations during late night and early morning. An intensive campaign was also conducted during Aug. 13-31, 2010 to investigate correlations between meteorological or chemical conditions and O3. It was found that O3 was poorly correlated with solar radiation due to the insufficient NOx in the ambient air, thus limiting O3 formation under strong solar radiation. In contrast, high O3 levels always coincided with strong winds, suggesting that stratospheric O3 and long range transport might be the main sources of O3 in this rural area. Back-trajectory analysis supported this hypothesis and further indicated the transport of air masses from northwest, northeast and southeast directions.

KW - High elevation site

KW - O transport

KW - Photochemical production

KW - Tropospheric O

UR - https://www.scopus.com/pages/publications/84907704157

U2 - 10.1016/j.scitotenv.2014.08.104

DO - 10.1016/j.scitotenv.2014.08.104

M3 - 文章

C2 - 25226074

AN - SCOPUS:84907704157

SN - 0048-9697

VL - 500-501

SP - 295

EP - 301

JO - Science of the Total Environment

JF - Science of the Total Environment

ER -

Characteristics of surface O₃ over Qinghai Lake area in Northeast Tibetan Plateau, China

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Keywords

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