MozartV1, PascalFrancis, Corpus, bibRecord, 000130

Modeling and interpretation of stable carbon isotope ratios of ethane in global chemical transport models

Identifieur interne : 000130 ( PascalFrancis/Corpus ); précédent : 000129; suivant : 000131

Modeling and interpretation of stable carbon isotope ratios of ethane in global chemical transport models

Auteurs : Olaf Stein ; Jochen Rudolph

Source :

Journal of geophysical research [ 0148-0227 ] ; 2007.

RBID : Pascal:07-0406967

Descripteurs français

Pascal (Inist)
- Modélisation, Interprétation, Carbone isotope, Rapport isotopique, Composition isotopique, Ethane, Monde, Transport, Modèle 3 dimensions, Système information géographique, Inventaire, Base donnée, Fractionnement isotopique, Latitude, Modèle prévision, Courant, Concentration, Répartition géographique, Echelle planétaire, Dilution, Air.

English descriptors

KwdEn :
- Carbon isotopes, Forecast model, Geographic distribution, Isotopic composition, Modeling, Planetary scale, air, concentration, currents, data bases, dilution, ethane, geographic information systems, global, interpretation, inventory, isotope fractionation, isotope ratios, latitude, three-dimensional models, transport.

Abstract

[1] Model calculations with two global 3D-CTMs (GISS and MOZART-2) in which we introduced ethane stable carbon isotopic ratios were performed. In both models, emission inventories based on the EDGAR database are used for VOC emissions. We considered source specific isotope fractionations and included global emissions from C3 and C4 plants which differ significantly in isotope ratio. Comparison of the model results with observation strongly indicates that the EDGAR emission inventory underestimates global ethane emissions by a factor of approximately 1.5. On the basis of the latitude-dependent differences between model predictions and the atmospheric observations of ethane reported by Rudolph (1995), estimates of magnitude and latitude range of sources missing in current emission inventories are made. However, the concentration data alone provide only limited constraints on the geographical distribution and only indirect information about the type of the missing sources. Isotope ratio studies can be very valuable to obtain additional insight. To study the dependence between the geographical distribution of the emissions and atmospheric ethane concentrations and isotope ratios, MOZART-2 model calculations were made where all emissions are concentrated in latitude bands as well as in specified regions. Two regimes can be distinguished on a global scale: In the source latitude band, dilution with background air explains most of the calculated concentration variation, while at latitudes farther away from the sources, chemical loss is the dominating process.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A11	`02`	`1`		`@1 RUDOLPH (Jochen)`
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A14	`03`			`@1 Centre for Atmospheric Chemistry, Chemistry Department, York University @2 Toronto, Ontario @3 CAN @Z 2 aut.`
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C01	`01`		`ENG`	@0 [1] Model calculations with two global 3D-CTMs (GISS and MOZART-2) in which we introduced ethane stable carbon isotopic ratios were performed. In both models, emission inventories based on the EDGAR database are used for VOC emissions. We considered source specific isotope fractionations and included global emissions from C3 and C4 plants which differ significantly in isotope ratio. Comparison of the model results with observation strongly indicates that the EDGAR emission inventory underestimates global ethane emissions by a factor of approximately 1.5. On the basis of the latitude-dependent differences between model predictions and the atmospheric observations of ethane reported by Rudolph (1995), estimates of magnitude and latitude range of sources missing in current emission inventories are made. However, the concentration data alone provide only limited constraints on the geographical distribution and only indirect information about the type of the missing sources. Isotope ratio studies can be very valuable to obtain additional insight. To study the dependence between the geographical distribution of the emissions and atmospheric ethane concentrations and isotope ratios, MOZART-2 model calculations were made where all emissions are concentrated in latitude bands as well as in specified regions. Two regimes can be distinguished on a global scale: In the source latitude band, dilution with background air explains most of the calculated concentration variation, while at latitudes farther away from the sources, chemical loss is the dominating process.
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N21				`@1 260`
N44	`01`			`@1 OTO`
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Format Inist (serveur)

NO :	PASCAL 07-0406967 INIST
ET :	Modeling and interpretation of stable carbon isotope ratios of ethane in global chemical transport models
AU :	STEIN (Olaf); RUDOLPH (Jochen)
AF :	Institut für Chemie und Dynamik der Geosphare-2: Troposphäre, Forschungszentrum Jülich/Jülich/Allemagne (1 aut., 2 aut.); Max Planck Institute for Meteorology/Hamburg/Allemagne (1 aut.); Centre for Atmospheric Chemistry, Chemistry Department, York University/Toronto, Ontario/Canada (2 aut.)
DT :	Publication en série; Niveau analytique
SO :	Journal of geophysical research; ISSN 0148-0227; Etats-Unis; Da. 2007; Vol. 112; No. D14; D14308.1-D14308.18; Bibl. 3/4 p.
LA :	Anglais
EA :	[1] Model calculations with two global 3D-CTMs (GISS and MOZART-2) in which we introduced ethane stable carbon isotopic ratios were performed. In both models, emission inventories based on the EDGAR database are used for VOC emissions. We considered source specific isotope fractionations and included global emissions from C3 and C4 plants which differ significantly in isotope ratio. Comparison of the model results with observation strongly indicates that the EDGAR emission inventory underestimates global ethane emissions by a factor of approximately 1.5. On the basis of the latitude-dependent differences between model predictions and the atmospheric observations of ethane reported by Rudolph (1995), estimates of magnitude and latitude range of sources missing in current emission inventories are made. However, the concentration data alone provide only limited constraints on the geographical distribution and only indirect information about the type of the missing sources. Isotope ratio studies can be very valuable to obtain additional insight. To study the dependence between the geographical distribution of the emissions and atmospheric ethane concentrations and isotope ratios, MOZART-2 model calculations were made where all emissions are concentrated in latitude bands as well as in specified regions. Two regimes can be distinguished on a global scale: In the source latitude band, dilution with background air explains most of the calculated concentration variation, while at latitudes farther away from the sources, chemical loss is the dominating process.
CC :	220; 001E; 001E01
FD :	Modélisation; Interprétation; Carbone isotope; Rapport isotopique; Composition isotopique; Ethane; Monde; Transport; Modèle 3 dimensions; Système information géographique; Inventaire; Base donnée; Fractionnement isotopique; Latitude; Modèle prévision; Courant; Concentration; Répartition géographique; Echelle planétaire; Dilution; Air
ED :	Modeling; interpretation; Carbon isotopes; isotope ratios; Isotopic composition; ethane; global; transport; three-dimensional models; geographic information systems; inventory; data bases; isotope fractionation; latitude; Forecast model; currents; concentration; Geographic distribution; Planetary scale; dilution; air
SD :	Modelización; Interpretación; Composición isotópica; Etano; Mundo; Transporte; Modelo 3 dimensiones; Inventario; Base dato; Fraccionamiento isotópico; Modelo previsión; Concentración; Distribución geográfica; Escala planetaria; Dilución
LO :	INIST-3144.354000150074620330
ID :	07-0406967

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Pascal:07-0406967

Le document en format XML

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<front><div type="abstract" xml:lang="en">[1] Model calculations with two global 3D-CTMs (GISS and MOZART-2) in which we introduced ethane stable carbon isotopic ratios were performed. In both models, emission inventories based on the EDGAR database are used for VOC emissions. We considered source specific isotope fractionations and included global emissions from C3 and C4 plants which differ significantly in isotope ratio. Comparison of the model results with observation strongly indicates that the EDGAR emission inventory underestimates global ethane emissions by a factor of approximately 1.5. On the basis of the latitude-dependent differences between model predictions and the atmospheric observations of ethane reported by Rudolph (1995), estimates of magnitude and latitude range of sources missing in current emission inventories are made. However, the concentration data alone provide only limited constraints on the geographical distribution and only indirect information about the type of the missing sources. Isotope ratio studies can be very valuable to obtain additional insight. To study the dependence between the geographical distribution of the emissions and atmospheric ethane concentrations and isotope ratios, MOZART-2 model calculations were made where all emissions are concentrated in latitude bands as well as in specified regions. Two regimes can be distinguished on a global scale: In the source latitude band, dilution with background air explains most of the calculated concentration variation, while at latitudes farther away from the sources, chemical loss is the dominating process.</div>
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<fC01 i1="01" l="ENG"><s0>[1] Model calculations with two global 3D-CTMs (GISS and MOZART-2) in which we introduced ethane stable carbon isotopic ratios were performed. In both models, emission inventories based on the EDGAR database are used for VOC emissions. We considered source specific isotope fractionations and included global emissions from C3 and C4 plants which differ significantly in isotope ratio. Comparison of the model results with observation strongly indicates that the EDGAR emission inventory underestimates global ethane emissions by a factor of approximately 1.5. On the basis of the latitude-dependent differences between model predictions and the atmospheric observations of ethane reported by Rudolph (1995), estimates of magnitude and latitude range of sources missing in current emission inventories are made. However, the concentration data alone provide only limited constraints on the geographical distribution and only indirect information about the type of the missing sources. Isotope ratio studies can be very valuable to obtain additional insight. To study the dependence between the geographical distribution of the emissions and atmospheric ethane concentrations and isotope ratios, MOZART-2 model calculations were made where all emissions are concentrated in latitude bands as well as in specified regions. Two regimes can be distinguished on a global scale: In the source latitude band, dilution with background air explains most of the calculated concentration variation, while at latitudes farther away from the sources, chemical loss is the dominating process.</s0>
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<fC03 i1="06" i2="2" l="FRE"><s0>Ethane</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="2" l="ENG"><s0>ethane</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="2" l="SPA"><s0>Etano</s0>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="2" l="FRE"><s0>Monde</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="2" l="ENG"><s0>global</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="2" l="SPA"><s0>Mundo</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="2" l="FRE"><s0>Transport</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="2" l="ENG"><s0>transport</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="2" l="SPA"><s0>Transporte</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="2" l="FRE"><s0>Modèle 3 dimensions</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="2" l="ENG"><s0>three-dimensional models</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="2" l="SPA"><s0>Modelo 3 dimensiones</s0>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="2" l="FRE"><s0>Système information géographique</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="2" l="ENG"><s0>geographic information systems</s0>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="2" l="FRE"><s0>Inventaire</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="2" l="ENG"><s0>inventory</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="2" l="SPA"><s0>Inventario</s0>
<s5>11</s5>
</fC03>
<fC03 i1="12" i2="2" l="FRE"><s0>Base donnée</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="2" l="ENG"><s0>data bases</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="2" l="SPA"><s0>Base dato</s0>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="2" l="FRE"><s0>Fractionnement isotopique</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="2" l="ENG"><s0>isotope fractionation</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="2" l="SPA"><s0>Fraccionamiento isotópico</s0>
<s5>13</s5>
</fC03>
<fC03 i1="14" i2="2" l="FRE"><s0>Latitude</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="2" l="ENG"><s0>latitude</s0>
<s5>14</s5>
</fC03>
<fC03 i1="15" i2="X" l="FRE"><s0>Modèle prévision</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="X" l="ENG"><s0>Forecast model</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="X" l="SPA"><s0>Modelo previsión</s0>
<s5>15</s5>
</fC03>
<fC03 i1="16" i2="2" l="FRE"><s0>Courant</s0>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="2" l="ENG"><s0>currents</s0>
<s5>16</s5>
</fC03>
<fC03 i1="17" i2="2" l="FRE"><s0>Concentration</s0>
<s5>17</s5>
</fC03>
<fC03 i1="17" i2="2" l="ENG"><s0>concentration</s0>
<s5>17</s5>
</fC03>
<fC03 i1="17" i2="2" l="SPA"><s0>Concentración</s0>
<s5>17</s5>
</fC03>
<fC03 i1="18" i2="X" l="FRE"><s0>Répartition géographique</s0>
<s5>18</s5>
</fC03>
<fC03 i1="18" i2="X" l="ENG"><s0>Geographic distribution</s0>
<s5>18</s5>
</fC03>
<fC03 i1="18" i2="X" l="SPA"><s0>Distribución geográfica</s0>
<s5>18</s5>
</fC03>
<fC03 i1="19" i2="X" l="FRE"><s0>Echelle planétaire</s0>
<s5>19</s5>
</fC03>
<fC03 i1="19" i2="X" l="ENG"><s0>Planetary scale</s0>
<s5>19</s5>
</fC03>
<fC03 i1="19" i2="X" l="SPA"><s0>Escala planetaria</s0>
<s5>19</s5>
</fC03>
<fC03 i1="20" i2="2" l="FRE"><s0>Dilution</s0>
<s5>20</s5>
</fC03>
<fC03 i1="20" i2="2" l="ENG"><s0>dilution</s0>
<s5>20</s5>
</fC03>
<fC03 i1="20" i2="2" l="SPA"><s0>Dilución</s0>
<s5>20</s5>
</fC03>
<fC03 i1="21" i2="2" l="FRE"><s0>Air</s0>
<s5>21</s5>
</fC03>
<fC03 i1="21" i2="2" l="ENG"><s0>air</s0>
<s5>21</s5>
</fC03>
<fN21><s1>260</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
</pA>
</standard>
<server><NO>PASCAL 07-0406967 INIST</NO>
<ET>Modeling and interpretation of stable carbon isotope ratios of ethane in global chemical transport models</ET>
<AU>STEIN (Olaf); RUDOLPH (Jochen)</AU>
<AF>Institut für Chemie und Dynamik der Geosphare-2: Troposphäre, Forschungszentrum Jülich/Jülich/Allemagne (1 aut., 2 aut.); Max Planck Institute for Meteorology/Hamburg/Allemagne (1 aut.); Centre for Atmospheric Chemistry, Chemistry Department, York University/Toronto, Ontario/Canada (2 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Journal of geophysical research; ISSN 0148-0227; Etats-Unis; Da. 2007; Vol. 112; No. D14; D14308.1-D14308.18; Bibl. 3/4 p.</SO>
<LA>Anglais</LA>
<EA>[1] Model calculations with two global 3D-CTMs (GISS and MOZART-2) in which we introduced ethane stable carbon isotopic ratios were performed. In both models, emission inventories based on the EDGAR database are used for VOC emissions. We considered source specific isotope fractionations and included global emissions from C3 and C4 plants which differ significantly in isotope ratio. Comparison of the model results with observation strongly indicates that the EDGAR emission inventory underestimates global ethane emissions by a factor of approximately 1.5. On the basis of the latitude-dependent differences between model predictions and the atmospheric observations of ethane reported by Rudolph (1995), estimates of magnitude and latitude range of sources missing in current emission inventories are made. However, the concentration data alone provide only limited constraints on the geographical distribution and only indirect information about the type of the missing sources. Isotope ratio studies can be very valuable to obtain additional insight. To study the dependence between the geographical distribution of the emissions and atmospheric ethane concentrations and isotope ratios, MOZART-2 model calculations were made where all emissions are concentrated in latitude bands as well as in specified regions. Two regimes can be distinguished on a global scale: In the source latitude band, dilution with background air explains most of the calculated concentration variation, while at latitudes farther away from the sources, chemical loss is the dominating process.</EA>
<CC>220; 001E; 001E01</CC>
<FD>Modélisation; Interprétation; Carbone isotope; Rapport isotopique; Composition isotopique; Ethane; Monde; Transport; Modèle 3 dimensions; Système information géographique; Inventaire; Base donnée; Fractionnement isotopique; Latitude; Modèle prévision; Courant; Concentration; Répartition géographique; Echelle planétaire; Dilution; Air</FD>
<ED>Modeling; interpretation; Carbon isotopes; isotope ratios; Isotopic composition; ethane; global; transport; three-dimensional models; geographic information systems; inventory; data bases; isotope fractionation; latitude; Forecast model; currents; concentration; Geographic distribution; Planetary scale; dilution; air</ED>
<SD>Modelización; Interpretación; Composición isotópica; Etano; Mundo; Transporte; Modelo 3 dimensiones; Inventario; Base dato; Fraccionamiento isotópico; Modelo previsión; Concentración; Distribución geográfica; Escala planetaria; Dilución</SD>
<LO>INIST-3144.354000150074620330</LO>
<ID>07-0406967</ID>
</server>
</inist>
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Modeling and interpretation of stable carbon isotope ratios of ethane in global chemical transport models

Modeling and interpretation of stable carbon isotope ratios of ethane in global chemical transport models

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