Observation of Nitrate Radical in the Nocturnal Boundary Layer During a Summer Field Campaign in Pearl River Delta, China
From July 4 to 11, 2006 at Back Garden site (23°28’86”N; 113°02’91”E), nighttime nitrate radical (NO3) was measured with a long path differential optical absorption spectroscopy (DOAS) during an intensive field campaign in the Pearl River Delta of China. The NO3 concentration in polluted air masses...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Chinese Geoscience Union
2012-01-01
|
Series: | Terrestrial, Atmospheric and Oceanic Sciences |
Subjects: | |
Online Access: |
http://tao.cgu.org.tw/images/attachments/v231p039.pdf
|
id |
doaj-f089869f0794425fafb4630f80c08240 |
---|---|
record_format |
Article |
spelling |
doaj-f089869f0794425fafb4630f80c082402020-11-24T21:21:06ZengChinese Geoscience UnionTerrestrial, Atmospheric and Oceanic Sciences1017-08392311-76802012-01-0123103910.3319/TAO.2011.07.26.01(A)1049Observation of Nitrate Radical in the Nocturnal Boundary Layer During a Summer Field Campaign in Pearl River Delta, ChinaSuwen LiWenqing LiuPinhua XieMin QinYijun YangFrom July 4 to 11, 2006 at Back Garden site (23°28’86”N; 113°02’91”E), nighttime nitrate radical (NO3) was measured with a long path differential optical absorption spectroscopy (DOAS) during an intensive field campaign in the Pearl River Delta of China. The NO3 concentration in polluted air masses varied from 3.6 to 82.5 ppt with an average level of 21.8 ± 1.8 ppt. NO3 at these levels can play a significant role in oxidation of volatile organic compounds (VOCs). The calculated production rate of nitrate radical ranged from 8 × 105 to 2.98 × 107 cm-3 s-1, while its lifetimes spanned from between just several seconds to 650 seconds, with an average of 89 seconds. N2O5 levels were calculated with the average of 620 ± 93 ppt during this campaign. The possible scavenging processes for the nitrate radical were obtained by using a statistical analysis of the correlation between NO3 and NO levels, NO3 concentration and its production rate, and the NO3 lifetime and NO2 levels, respectively. Results showed that the direct losses were of importance at Back Garden in summer Pearl River Delta, China. http://tao.cgu.org.tw/images/attachments/v231p039.pdf Nitrate radicalDifferential optical absorption spectroscopyProduction rateLifetimeLoss process |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Suwen Li Wenqing Liu Pinhua Xie Min Qin Yijun Yang |
spellingShingle |
Suwen Li Wenqing Liu Pinhua Xie Min Qin Yijun Yang Observation of Nitrate Radical in the Nocturnal Boundary Layer During a Summer Field Campaign in Pearl River Delta, China Terrestrial, Atmospheric and Oceanic Sciences Nitrate radical Differential optical absorption spectroscopy Production rate Lifetime Loss process |
author_facet |
Suwen Li Wenqing Liu Pinhua Xie Min Qin Yijun Yang |
author_sort |
Suwen Li |
title |
Observation of Nitrate Radical in the Nocturnal Boundary Layer During a Summer Field Campaign in Pearl River Delta, China |
title_short |
Observation of Nitrate Radical in the Nocturnal Boundary Layer During a Summer Field Campaign in Pearl River Delta, China |
title_full |
Observation of Nitrate Radical in the Nocturnal Boundary Layer During a Summer Field Campaign in Pearl River Delta, China |
title_fullStr |
Observation of Nitrate Radical in the Nocturnal Boundary Layer During a Summer Field Campaign in Pearl River Delta, China |
title_full_unstemmed |
Observation of Nitrate Radical in the Nocturnal Boundary Layer During a Summer Field Campaign in Pearl River Delta, China |
title_sort |
observation of nitrate radical in the nocturnal boundary layer during a summer field campaign in pearl river delta, china |
publisher |
Chinese Geoscience Union |
series |
Terrestrial, Atmospheric and Oceanic Sciences |
issn |
1017-0839 2311-7680 |
publishDate |
2012-01-01 |
description |
From July 4 to 11, 2006 at Back Garden site (23°28’86”N; 113°02’91”E), nighttime nitrate radical (NO3) was measured with a long path differential optical absorption spectroscopy (DOAS) during an intensive field campaign in the Pearl River Delta of China. The NO3 concentration in polluted air masses varied from 3.6 to 82.5 ppt with an average level of 21.8 ± 1.8 ppt. NO3 at these levels can play a significant role in oxidation of volatile organic compounds (VOCs). The calculated production rate of nitrate radical ranged from 8 × 105 to 2.98 × 107 cm-3 s-1, while its lifetimes spanned from between just several seconds to 650 seconds, with an average of 89 seconds. N2O5 levels were calculated with the average of 620 ± 93 ppt during this campaign. The possible scavenging processes for the nitrate radical were obtained by using a statistical analysis of the correlation between NO3 and NO levels, NO3 concentration and its production rate, and the NO3 lifetime and NO2 levels, respectively. Results showed that the direct losses were of importance at Back Garden in summer Pearl River Delta, China. |
topic |
Nitrate radical Differential optical absorption spectroscopy Production rate Lifetime Loss process |
url |
http://tao.cgu.org.tw/images/attachments/v231p039.pdf
|
work_keys_str_mv |
AT suwenli observationofnitrateradicalinthenocturnalboundarylayerduringasummerfieldcampaigninpearlriverdeltachina AT wenqingliu observationofnitrateradicalinthenocturnalboundarylayerduringasummerfieldcampaigninpearlriverdeltachina AT pinhuaxie observationofnitrateradicalinthenocturnalboundarylayerduringasummerfieldcampaigninpearlriverdeltachina AT minqin observationofnitrateradicalinthenocturnalboundarylayerduringasummerfieldcampaigninpearlriverdeltachina AT yijunyang observationofnitrateradicalinthenocturnalboundarylayerduringasummerfieldcampaigninpearlriverdeltachina |
_version_ |
1726001018569752576 |