MozartV1, PascalFrancis, Corpus, bibRecord, 000140

Analysis of air quality in eastern China and its interaction with other regions of the world

Identifieur interne : 000140 ( PascalFrancis/Corpus ); précédent : 000139; suivant : 000141

Analysis of air quality in eastern China and its interaction with other regions of the world

Auteurs : CHUNSHENG ZHAO ; XUEXI TIE ; GELI WANG ; YU QIN ; PEICAI YANG

Source :

Journal of atmospheric chemistry [ 0167-7764 ] ; 2006.

RBID : Pascal:07-0072636

Descripteurs français

Pascal (Inist)
- Troposphère, Qualité air, Pollution air, Aérosol, Chimie atmosphérique, Carbone monoxyde, Azote oxyde, Composition chimique, Variation saisonnière, Source pollution, Transport polluant grande distance, Polluant secondaire, Ozone, Distribution concentration, Relation source puits, Simulation numérique, Donnée observation, Observation par satellite, Chine Est, Télédétection spatiale.

English descriptors

KwdEn :
- Aerosols, Air pollution, Air quality, Atmospheric chemistry, Carbon monoxide, Chemical composition, Concentration distribution, Long range pollutant transport, Nitrogen oxide, Numerical simulation, Observation data, Ozone, Pollution source, Satellite observation, Seasonal variation, Secondary pollutant, Source sink relationship, Space remote sensing, Troposphere.

Abstract

In this study, we used satellite data (GOME and MOPITT) together with a global chemical-transport-model of atmosphere (MOZART-2) to characterize the chemical/aerosol composition over eastern China. We then estimated the effects of local emissions in China on the chemical budgets in other regions of the world. Likewise, we also investigated the effects of air pollution from other regions on the chemical budget over eastern China. The study shows that the column CO and NO_x concentrations are also high in eastern China. The high CO and NO_x concentrations produce modest levels of O₃ concentrations during summer (about 40 to 50 ppbv) and very low O₃ during winter (about 10 to 20 ppbv) in eastern China. The calculated NO₂ column is fairly consistent from the GOME measurement. The calculated CO column is underestimated from the MOPITT measurement. One of the reasons of the underestimation of the predicted CO is due to a fact that the CO emissions were taken without considering the rapid increase of emissions from 1990 to 2000. The calculated surface O₃ is consistent with the measured values, with strong seasonal variations. However, the measurement is very limited, and more measurements in eastern China will be needed. The column NO₂ has a very strong seasonal variation in eastern China, with the highest concentrations during winter and the lowest concentrations during summer. The cause of this seasonal variability is mainly due to the seasonal changes in the chemical loss of NO_x, which is very high in summer and very low during winter. The effects of the local emissions in China and long-range transport from other regions on the chemical distributions in eastern China are studied. The results show that NO, concentrations in eastern China are mostly caused by the local emissions in China, especially during the winter. The CO concentration over eastern China is from both the local emissions (30% to 40%) and the transport from other regions. Likewise, the CO emissions in China have an important effect on the other regions of the world, but the effect is limited in the northern hemisphere. The local emissions in China also have an important effect on surface O₃ concentrations. During winter, the local emissions reduce the surface O₃ concentrations by 30 to 50%. During summer, the local emissions produce about 50 to 70% of the O₃ concentration in eastern China.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A14	`03`			`@1 Institute of Atmospheric Physics, Chinese Academic @2 Beijing @3 CHN @Z 2 aut. @Z 3 aut. @Z 5 aut.`
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A47	`01`	`1`		`@0 07-0072636`
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C01	`01`		`ENG`	@0 In this study, we used satellite data (GOME and MOPITT) together with a global chemical-transport-model of atmosphere (MOZART-2) to characterize the chemical/aerosol composition over eastern China. We then estimated the effects of local emissions in China on the chemical budgets in other regions of the world. Likewise, we also investigated the effects of air pollution from other regions on the chemical budget over eastern China. The study shows that the column CO and NO_x concentrations are also high in eastern China. The high CO and NO_x concentrations produce modest levels of O₃ concentrations during summer (about 40 to 50 ppbv) and very low O₃ during winter (about 10 to 20 ppbv) in eastern China. The calculated NO₂ column is fairly consistent from the GOME measurement. The calculated CO column is underestimated from the MOPITT measurement. One of the reasons of the underestimation of the predicted CO is due to a fact that the CO emissions were taken without considering the rapid increase of emissions from 1990 to 2000. The calculated surface O₃ is consistent with the measured values, with strong seasonal variations. However, the measurement is very limited, and more measurements in eastern China will be needed. The column NO₂ has a very strong seasonal variation in eastern China, with the highest concentrations during winter and the lowest concentrations during summer. The cause of this seasonal variability is mainly due to the seasonal changes in the chemical loss of NO_x, which is very high in summer and very low during winter. The effects of the local emissions in China and long-range transport from other regions on the chemical distributions in eastern China are studied. The results show that NO, concentrations in eastern China are mostly caused by the local emissions in China, especially during the winter. The CO concentration over eastern China is from both the local emissions (30% to 40%) and the transport from other regions. Likewise, the CO emissions in China have an important effect on the other regions of the world, but the effect is limited in the northern hemisphere. The local emissions in China also have an important effect on surface O₃ concentrations. During winter, the local emissions reduce the surface O₃ concentrations by 30 to 50%. During summer, the local emissions produce about 50 to 70% of the O₃ concentration in eastern China.
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Format Inist (serveur)

NO :	PASCAL 07-0072636 INIST
ET :	Analysis of air quality in eastern China and its interaction with other regions of the world
AU :	CHUNSHENG ZHAO; XUEXI TIE; GELI WANG; YU QIN; PEICAI YANG
AF :	Department of Atmospheric Sciences, School of Physics, PeKing University/Beijing/Chine (1 aut., 4 aut.); National Center for Atmospheric Research/Boulder, CO/Etats-Unis (2 aut.); Institute of Atmospheric Physics, Chinese Academic/Beijing/Chine (2 aut., 3 aut., 5 aut.)
DT :	Publication en série; Niveau analytique
SO :	Journal of atmospheric chemistry; ISSN 0167-7764; Coden JATCE2; Pays-Bas; Da. 2006; Vol. 55; No. 3; Pp. 189-204; Bibl. 1 p.3/4
LA :	Anglais
EA :	In this study, we used satellite data (GOME and MOPITT) together with a global chemical-transport-model of atmosphere (MOZART-2) to characterize the chemical/aerosol composition over eastern China. We then estimated the effects of local emissions in China on the chemical budgets in other regions of the world. Likewise, we also investigated the effects of air pollution from other regions on the chemical budget over eastern China. The study shows that the column CO and NO_x concentrations are also high in eastern China. The high CO and NO_x concentrations produce modest levels of O₃ concentrations during summer (about 40 to 50 ppbv) and very low O₃ during winter (about 10 to 20 ppbv) in eastern China. The calculated NO₂ column is fairly consistent from the GOME measurement. The calculated CO column is underestimated from the MOPITT measurement. One of the reasons of the underestimation of the predicted CO is due to a fact that the CO emissions were taken without considering the rapid increase of emissions from 1990 to 2000. The calculated surface O₃ is consistent with the measured values, with strong seasonal variations. However, the measurement is very limited, and more measurements in eastern China will be needed. The column NO₂ has a very strong seasonal variation in eastern China, with the highest concentrations during winter and the lowest concentrations during summer. The cause of this seasonal variability is mainly due to the seasonal changes in the chemical loss of NO_x, which is very high in summer and very low during winter. The effects of the local emissions in China and long-range transport from other regions on the chemical distributions in eastern China are studied. The results show that NO, concentrations in eastern China are mostly caused by the local emissions in China, especially during the winter. The CO concentration over eastern China is from both the local emissions (30% to 40%) and the transport from other regions. Likewise, the CO emissions in China have an important effect on the other regions of the world, but the effect is limited in the northern hemisphere. The local emissions in China also have an important effect on surface O₃ concentrations. During winter, the local emissions reduce the surface O₃ concentrations by 30 to 50%. During summer, the local emissions produce about 50 to 70% of the O₃ concentration in eastern China.
CC :	001D16C02
FD :	Troposphère; Qualité air; Pollution air; Aérosol; Chimie atmosphérique; Carbone monoxyde; Azote oxyde; Composition chimique; Variation saisonnière; Source pollution; Transport polluant grande distance; Polluant secondaire; Ozone; Distribution concentration; Relation source puits; Simulation numérique; Donnée observation; Observation par satellite; Chine Est; Télédétection spatiale
ED :	Troposphere; Air quality; Air pollution; Aerosols; Atmospheric chemistry; Carbon monoxide; Nitrogen oxide; Chemical composition; Seasonal variation; Pollution source; Long range pollutant transport; Secondary pollutant; Ozone; Concentration distribution; Source sink relationship; Numerical simulation; Observation data; Satellite observation; Space remote sensing
SD :	Troposfera; Calidad aire; Contaminación aire; Aerosol; Carbono monóxido; Nitrógeno óxido; Composición química; Variación estacional; Fuente polución; Transporte contaminante gran distancia; Contaminante secundario; Ozono; Distribución concentración; Relación fuente sumidero; Simulación numérica; Dato observación; Observación por satélite; Teledetección espacial
LO :	INIST-19998.354000139095110010
ID :	07-0072636

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Pascal:07-0072636

Le document en format XML

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<front><div type="abstract" xml:lang="en">In this study, we used satellite data (GOME and MOPITT) together with a global chemical-transport-model of atmosphere (MOZART-2) to characterize the chemical/aerosol composition over eastern China. We then estimated the effects of local emissions in China on the chemical budgets in other regions of the world. Likewise, we also investigated the effects of air pollution from other regions on the chemical budget over eastern China. The study shows that the column CO and NO<sub>x</sub>
 concentrations are also high in eastern China. The high CO and NO<sub>x</sub>
 concentrations produce modest levels of O<sub>3</sub>
 concentrations during summer (about 40 to 50 ppbv) and very low O<sub>3</sub>
 during winter (about 10 to 20 ppbv) in eastern China. The calculated NO<sub>2</sub>
 column is fairly consistent from the GOME measurement. The calculated CO column is underestimated from the MOPITT measurement. One of the reasons of the underestimation of the predicted CO is due to a fact that the CO emissions were taken without considering the rapid increase of emissions from 1990 to 2000. The calculated surface O<sub>3</sub>
 is consistent with the measured values, with strong seasonal variations. However, the measurement is very limited, and more measurements in eastern China will be needed. The column NO<sub>2</sub>
 has a very strong seasonal variation in eastern China, with the highest concentrations during winter and the lowest concentrations during summer. The cause of this seasonal variability is mainly due to the seasonal changes in the chemical loss of NO<sub>x</sub>
, which is very high in summer and very low during winter. The effects of the local emissions in China and long-range transport from other regions on the chemical distributions in eastern China are studied. The results show that NO, concentrations in eastern China are mostly caused by the local emissions in China, especially during the winter. The CO concentration over eastern China is from both the local emissions (30% to 40%) and the transport from other regions. Likewise, the CO emissions in China have an important effect on the other regions of the world, but the effect is limited in the northern hemisphere. The local emissions in China also have an important effect on surface O<sub>3</sub>
 concentrations. During winter, the local emissions reduce the surface O<sub>3</sub>
 concentrations by 30 to 50%. During summer, the local emissions produce about 50 to 70% of the O<sub>3</sub>
 concentration in eastern China.</div>
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<fA06><s2>3</s2>
</fA06>
<fA08 i1="01" i2="1" l="ENG"><s1>Analysis of air quality in eastern China and its interaction with other regions of the world</s1>
</fA08>
<fA11 i1="01" i2="1"><s1>CHUNSHENG ZHAO</s1>
</fA11>
<fA11 i1="02" i2="1"><s1>XUEXI TIE</s1>
</fA11>
<fA11 i1="03" i2="1"><s1>GELI WANG</s1>
</fA11>
<fA11 i1="04" i2="1"><s1>YU QIN</s1>
</fA11>
<fA11 i1="05" i2="1"><s1>PEICAI YANG</s1>
</fA11>
<fA14 i1="01"><s1>Department of Atmospheric Sciences, School of Physics, PeKing University</s1>
<s2>Beijing</s2>
<s3>CHN</s3>
<sZ>1 aut.</sZ>
<sZ>4 aut.</sZ>
</fA14>
<fA14 i1="02"><s1>National Center for Atmospheric Research</s1>
<s2>Boulder, CO</s2>
<s3>USA</s3>
<sZ>2 aut.</sZ>
</fA14>
<fA14 i1="03"><s1>Institute of Atmospheric Physics, Chinese Academic</s1>
<s2>Beijing</s2>
<s3>CHN</s3>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
</fA14>
<fA20><s1>189-204</s1>
</fA20>
<fA21><s1>2006</s1>
</fA21>
<fA23 i1="01"><s0>ENG</s0>
</fA23>
<fA43 i1="01"><s1>INIST</s1>
<s2>19998</s2>
<s5>354000139095110010</s5>
</fA43>
<fA44><s0>0000</s0>
<s1>© 2007 INIST-CNRS. All rights reserved.</s1>
</fA44>
<fA45><s0>1 p.3/4</s0>
</fA45>
<fA47 i1="01" i2="1"><s0>07-0072636</s0>
</fA47>
<fA60><s1>P</s1>
</fA60>
<fA61><s0>A</s0>
</fA61>
<fA64 i1="01" i2="1"><s0>Journal of atmospheric chemistry</s0>
</fA64>
<fA66 i1="01"><s0>NLD</s0>
</fA66>
<fC01 i1="01" l="ENG"><s0>In this study, we used satellite data (GOME and MOPITT) together with a global chemical-transport-model of atmosphere (MOZART-2) to characterize the chemical/aerosol composition over eastern China. We then estimated the effects of local emissions in China on the chemical budgets in other regions of the world. Likewise, we also investigated the effects of air pollution from other regions on the chemical budget over eastern China. The study shows that the column CO and NO<sub>x</sub>
 concentrations are also high in eastern China. The high CO and NO<sub>x</sub>
 concentrations produce modest levels of O<sub>3</sub>
 concentrations during summer (about 40 to 50 ppbv) and very low O<sub>3</sub>
 during winter (about 10 to 20 ppbv) in eastern China. The calculated NO<sub>2</sub>
 column is fairly consistent from the GOME measurement. The calculated CO column is underestimated from the MOPITT measurement. One of the reasons of the underestimation of the predicted CO is due to a fact that the CO emissions were taken without considering the rapid increase of emissions from 1990 to 2000. The calculated surface O<sub>3</sub>
 is consistent with the measured values, with strong seasonal variations. However, the measurement is very limited, and more measurements in eastern China will be needed. The column NO<sub>2</sub>
 has a very strong seasonal variation in eastern China, with the highest concentrations during winter and the lowest concentrations during summer. The cause of this seasonal variability is mainly due to the seasonal changes in the chemical loss of NO<sub>x</sub>
, which is very high in summer and very low during winter. The effects of the local emissions in China and long-range transport from other regions on the chemical distributions in eastern China are studied. The results show that NO, concentrations in eastern China are mostly caused by the local emissions in China, especially during the winter. The CO concentration over eastern China is from both the local emissions (30% to 40%) and the transport from other regions. Likewise, the CO emissions in China have an important effect on the other regions of the world, but the effect is limited in the northern hemisphere. The local emissions in China also have an important effect on surface O<sub>3</sub>
 concentrations. During winter, the local emissions reduce the surface O<sub>3</sub>
 concentrations by 30 to 50%. During summer, the local emissions produce about 50 to 70% of the O<sub>3</sub>
 concentration in eastern China.</s0>
</fC01>
<fC02 i1="01" i2="X"><s0>001D16C02</s0>
</fC02>
<fC03 i1="01" i2="X" l="FRE"><s0>Troposphère</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="ENG"><s0>Troposphere</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="SPA"><s0>Troposfera</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="X" l="FRE"><s0>Qualité air</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="ENG"><s0>Air quality</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA"><s0>Calidad aire</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE"><s0>Pollution air</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG"><s0>Air pollution</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Contaminación aire</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE"><s0>Aérosol</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG"><s0>Aerosols</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA"><s0>Aerosol</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="3" l="FRE"><s0>Chimie atmosphérique</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="3" l="ENG"><s0>Atmospheric chemistry</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>Carbone monoxyde</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>Carbon monoxide</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Carbono monóxido</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Azote oxyde</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>Nitrogen oxide</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Nitrógeno óxido</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Composition chimique</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG"><s0>Chemical composition</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA"><s0>Composición química</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Variation saisonnière</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Seasonal variation</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Variación estacional</s0>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="X" l="FRE"><s0>Source pollution</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="X" l="ENG"><s0>Pollution source</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="X" l="SPA"><s0>Fuente polución</s0>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="X" l="FRE"><s0>Transport polluant grande distance</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="ENG"><s0>Long range pollutant transport</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="SPA"><s0>Transporte contaminante gran distancia</s0>
<s5>11</s5>
</fC03>
<fC03 i1="12" i2="X" l="FRE"><s0>Polluant secondaire</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="ENG"><s0>Secondary pollutant</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="SPA"><s0>Contaminante secundario</s0>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="X" l="FRE"><s0>Ozone</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="X" l="ENG"><s0>Ozone</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="X" l="SPA"><s0>Ozono</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>13</s5>
</fC03>
<fC03 i1="14" i2="X" l="FRE"><s0>Distribution concentration</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="X" l="ENG"><s0>Concentration distribution</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="X" l="SPA"><s0>Distribución concentración</s0>
<s5>14</s5>
</fC03>
<fC03 i1="15" i2="X" l="FRE"><s0>Relation source puits</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="X" l="ENG"><s0>Source sink relationship</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="X" l="SPA"><s0>Relación fuente sumidero</s0>
<s5>15</s5>
</fC03>
<fC03 i1="16" i2="X" l="FRE"><s0>Simulation numérique</s0>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="X" l="ENG"><s0>Numerical simulation</s0>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="X" l="SPA"><s0>Simulación numérica</s0>
<s5>16</s5>
</fC03>
<fC03 i1="17" i2="X" l="FRE"><s0>Donnée observation</s0>
<s5>17</s5>
</fC03>
<fC03 i1="17" i2="X" l="ENG"><s0>Observation data</s0>
<s5>17</s5>
</fC03>
<fC03 i1="17" i2="X" l="SPA"><s0>Dato observación</s0>
<s5>17</s5>
</fC03>
<fC03 i1="18" i2="X" l="FRE"><s0>Observation par satellite</s0>
<s5>18</s5>
</fC03>
<fC03 i1="18" i2="X" l="ENG"><s0>Satellite observation</s0>
<s5>18</s5>
</fC03>
<fC03 i1="18" i2="X" l="SPA"><s0>Observación por satélite</s0>
<s5>18</s5>
</fC03>
<fC03 i1="19" i2="X" l="FRE"><s0>Chine Est</s0>
<s2>NG</s2>
<s4>INC</s4>
<s5>27</s5>
</fC03>
<fC03 i1="20" i2="X" l="FRE"><s0>Télédétection spatiale</s0>
<s5>40</s5>
</fC03>
<fC03 i1="20" i2="X" l="ENG"><s0>Space remote sensing</s0>
<s5>40</s5>
</fC03>
<fC03 i1="20" i2="X" l="SPA"><s0>Teledetección espacial</s0>
<s5>40</s5>
</fC03>
<fN21><s1>043</s1>
</fN21>
</pA>
</standard>
<server><NO>PASCAL 07-0072636 INIST</NO>
<ET>Analysis of air quality in eastern China and its interaction with other regions of the world</ET>
<AU>CHUNSHENG ZHAO; XUEXI TIE; GELI WANG; YU QIN; PEICAI YANG</AU>
<AF>Department of Atmospheric Sciences, School of Physics, PeKing University/Beijing/Chine (1 aut., 4 aut.); National Center for Atmospheric Research/Boulder, CO/Etats-Unis (2 aut.); Institute of Atmospheric Physics, Chinese Academic/Beijing/Chine (2 aut., 3 aut., 5 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Journal of atmospheric chemistry; ISSN 0167-7764; Coden JATCE2; Pays-Bas; Da. 2006; Vol. 55; No. 3; Pp. 189-204; Bibl. 1 p.3/4</SO>
<LA>Anglais</LA>
<EA>In this study, we used satellite data (GOME and MOPITT) together with a global chemical-transport-model of atmosphere (MOZART-2) to characterize the chemical/aerosol composition over eastern China. We then estimated the effects of local emissions in China on the chemical budgets in other regions of the world. Likewise, we also investigated the effects of air pollution from other regions on the chemical budget over eastern China. The study shows that the column CO and NO<sub>x</sub>
 concentrations are also high in eastern China. The high CO and NO<sub>x</sub>
 concentrations produce modest levels of O<sub>3</sub>
 concentrations during summer (about 40 to 50 ppbv) and very low O<sub>3</sub>
 during winter (about 10 to 20 ppbv) in eastern China. The calculated NO<sub>2</sub>
 column is fairly consistent from the GOME measurement. The calculated CO column is underestimated from the MOPITT measurement. One of the reasons of the underestimation of the predicted CO is due to a fact that the CO emissions were taken without considering the rapid increase of emissions from 1990 to 2000. The calculated surface O<sub>3</sub>
 is consistent with the measured values, with strong seasonal variations. However, the measurement is very limited, and more measurements in eastern China will be needed. The column NO<sub>2</sub>
 has a very strong seasonal variation in eastern China, with the highest concentrations during winter and the lowest concentrations during summer. The cause of this seasonal variability is mainly due to the seasonal changes in the chemical loss of NO<sub>x</sub>
, which is very high in summer and very low during winter. The effects of the local emissions in China and long-range transport from other regions on the chemical distributions in eastern China are studied. The results show that NO, concentrations in eastern China are mostly caused by the local emissions in China, especially during the winter. The CO concentration over eastern China is from both the local emissions (30% to 40%) and the transport from other regions. Likewise, the CO emissions in China have an important effect on the other regions of the world, but the effect is limited in the northern hemisphere. The local emissions in China also have an important effect on surface O<sub>3</sub>
 concentrations. During winter, the local emissions reduce the surface O<sub>3</sub>
 concentrations by 30 to 50%. During summer, the local emissions produce about 50 to 70% of the O<sub>3</sub>
 concentration in eastern China.</EA>
<CC>001D16C02</CC>
<FD>Troposphère; Qualité air; Pollution air; Aérosol; Chimie atmosphérique; Carbone monoxyde; Azote oxyde; Composition chimique; Variation saisonnière; Source pollution; Transport polluant grande distance; Polluant secondaire; Ozone; Distribution concentration; Relation source puits; Simulation numérique; Donnée observation; Observation par satellite; Chine Est; Télédétection spatiale</FD>
<ED>Troposphere; Air quality; Air pollution; Aerosols; Atmospheric chemistry; Carbon monoxide; Nitrogen oxide; Chemical composition; Seasonal variation; Pollution source; Long range pollutant transport; Secondary pollutant; Ozone; Concentration distribution; Source sink relationship; Numerical simulation; Observation data; Satellite observation; Space remote sensing</ED>
<SD>Troposfera; Calidad aire; Contaminación aire; Aerosol; Carbono monóxido; Nitrógeno óxido; Composición química; Variación estacional; Fuente polución; Transporte contaminante gran distancia; Contaminante secundario; Ozono; Distribución concentración; Relación fuente sumidero; Simulación numérica; Dato observación; Observación por satélite; Teledetección espacial</SD>
<LO>INIST-19998.354000139095110010</LO>
<ID>07-0072636</ID>
</server>
</inist>
</record>

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Analysis of air quality in eastern China and its interaction with other regions of the world

Analysis of air quality in eastern China and its interaction with other regions of the world

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