Contribution of isoprene to chemical budgets : A model tracer study with the NCAR CTM MOZART-4
Identifieur interne : 000112 ( PascalFrancis/Corpus ); précédent : 000111; suivant : 000113Contribution of isoprene to chemical budgets : A model tracer study with the NCAR CTM MOZART-4
Auteurs : G. G. Pfister ; L. K. Emmons ; P. G. Hess ; J.-F. Lamarque ; J. J. Orlando ; S. Walters ; A. Guenther ; P. I. Palmer ; P. J. LawrenceSource :
- Journal of geophysical research [ 0148-0227 ] ; 2008.
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- KwdEn :
Abstract
[1] We present a study of the sensitivity of isoprene emission calculations in a global chemistry transport model (CTM) to input land cover characteristics and analyze the impacts of changes in isoprene on the tropospheric budgets of atmospheric key species. The CTM Model for Ozone and Related Chemical Species, version 4 (MOZART-4) includes the online calculation of isoprene emissions based on the Model of Emissions of Gases and Aerosols from Nature (MEGAN), which is driven by three different land parameter inputs. We also included a tagging scheme in the CTM, which keeps track of the production of carbon containing species from isoprene oxidation. It is found that the amount of tropospheric carbon monoxide (CO), formaldehyde (HCHO) and peroxyacetylnitrate (PAN) explained by isoprene oxidation ranges from 9-16%, 15-27%, and 22-32%, depending on the isoprene emissions scenario. Changes in the global tropospheric burden with different land cover inputs can reach up to 10% for CO, 15% for HCHO, and 20% for PAN. Changes for ozone are small on a global scale, but regionally differences are as large as 3DU in the tropospheric column and as large as 5 ppbv in the surface concentrations. Our results demonstrate that a careful integration of isoprene emissions and chemistry in CTMs is very important for simulating the budgets of a number of atmospheric trace gases. We further demonstrate that the model tagging scheme has the capability of improving conventional methods of constraining isoprene emissions from space-borne HCHO column observations, especially in regions where a considerable part of the variability in the HCHO column is not related to isoprene.
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Format Inist (serveur)
NO : | PASCAL 08-0208587 INIST |
---|---|
ET : | Contribution of isoprene to chemical budgets : A model tracer study with the NCAR CTM MOZART-4 |
AU : | PFISTER (G. G.); EMMONS (L. K.); HESS (P. G.); LAMARQUE (J.-F.); ORLANDO (J. J.); WALTERS (S.); GUENTHER (A.); PALMER (P. I.); LAWRENCE (P. J.) |
AF : | National Center for Atmospheric Research/Boulder, Colorado/Etats-Unis (1 aut., 2 aut., 3 aut., 4 aut., 5 aut., 6 aut., 7 aut.); School of GeoSciences, University of Edinburgh/Edinburgh/Royaume-Uni (8 aut.); Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado/Boulder, Colorado/Etats-Unis (9 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Journal of geophysical research; ISSN 0148-0227; Etats-Unis; Da. 2008; Vol. 113; No. D5; D05308.1-D05308.21; Bibl. 1 p.1/2 |
LA : | Anglais |
EA : | [1] We present a study of the sensitivity of isoprene emission calculations in a global chemistry transport model (CTM) to input land cover characteristics and analyze the impacts of changes in isoprene on the tropospheric budgets of atmospheric key species. The CTM Model for Ozone and Related Chemical Species, version 4 (MOZART-4) includes the online calculation of isoprene emissions based on the Model of Emissions of Gases and Aerosols from Nature (MEGAN), which is driven by three different land parameter inputs. We also included a tagging scheme in the CTM, which keeps track of the production of carbon containing species from isoprene oxidation. It is found that the amount of tropospheric carbon monoxide (CO), formaldehyde (HCHO) and peroxyacetylnitrate (PAN) explained by isoprene oxidation ranges from 9-16%, 15-27%, and 22-32%, depending on the isoprene emissions scenario. Changes in the global tropospheric burden with different land cover inputs can reach up to 10% for CO, 15% for HCHO, and 20% for PAN. Changes for ozone are small on a global scale, but regionally differences are as large as 3DU in the tropospheric column and as large as 5 ppbv in the surface concentrations. Our results demonstrate that a careful integration of isoprene emissions and chemistry in CTMs is very important for simulating the budgets of a number of atmospheric trace gases. We further demonstrate that the model tagging scheme has the capability of improving conventional methods of constraining isoprene emissions from space-borne HCHO column observations, especially in regions where a considerable part of the variability in the HCHO column is not related to isoprene. |
CC : | 001E; 001E01; 220 |
FD : | Isoprène; Modèle; Traceur; Analyse sensibilité; Monde; Transport; Occupation sol; Troposphère; Ozone; Gaz; Aérosol; Trajectoire; Carbone; Oxydation; Monoxyde carbone; Monoxyde de carbone; Formaldéhyde; Peracétique acide nitrate; Pan; Echelle planétaire; Concentration; Composé trace; Variabilité |
ED : | Isoprene; models; tracers; sensitivity analysis; global; transport; land cover; troposphere; ozone; gases; aerosols; trajectory; carbon; oxidation; carbon monoxide; Carbon monoxide; Formaldehyde; Peroxyacetyl nitrate; Pan; Planetary scale; concentration; Trace compound; variability |
SD : | Isopreno; Modelo; Trazador; Mundo; Transporte; Ozono; Gas; Aerosol; Carbono; Oxidación; Carbono monóxido; Formaldehído; Pan; Escala planetaria; Concentración; Compuesto huella |
LO : | INIST-3144.354000183022170370 |
ID : | 08-0208587 |
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Pascal:08-0208587Le document en format XML
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Carbon monoxide</term>
<term>Formaldehyde</term>
<term>Isoprene</term>
<term>Pan</term>
<term>Peroxyacetyl nitrate</term>
<term>Planetary scale</term>
<term>Trace compound</term>
<term>aerosols</term>
<term>carbon</term>
<term>carbon monoxide</term>
<term>concentration</term>
<term>gases</term>
<term>global</term>
<term>land cover</term>
<term>models</term>
<term>oxidation</term>
<term>ozone</term>
<term>sensitivity analysis</term>
<term>tracers</term>
<term>trajectory</term>
<term>transport</term>
<term>troposphere</term>
<term>variability</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Isoprène</term>
<term>Modèle</term>
<term>Traceur</term>
<term>Analyse sensibilité</term>
<term>Monde</term>
<term>Transport</term>
<term>Occupation sol</term>
<term>Troposphère</term>
<term>Ozone</term>
<term>Gaz</term>
<term>Aérosol</term>
<term>Trajectoire</term>
<term>Carbone</term>
<term>Oxydation</term>
<term>Monoxyde carbone</term>
<term>Monoxyde de carbone</term>
<term>Formaldéhyde</term>
<term>Peracétique acide nitrate</term>
<term>Pan</term>
<term>Echelle planétaire</term>
<term>Concentration</term>
<term>Composé trace</term>
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<front><div type="abstract" xml:lang="en">[1] We present a study of the sensitivity of isoprene emission calculations in a global chemistry transport model (CTM) to input land cover characteristics and analyze the impacts of changes in isoprene on the tropospheric budgets of atmospheric key species. The CTM Model for Ozone and Related Chemical Species, version 4 (MOZART-4) includes the online calculation of isoprene emissions based on the Model of Emissions of Gases and Aerosols from Nature (MEGAN), which is driven by three different land parameter inputs. We also included a tagging scheme in the CTM, which keeps track of the production of carbon containing species from isoprene oxidation. It is found that the amount of tropospheric carbon monoxide (CO), formaldehyde (HCHO) and peroxyacetylnitrate (PAN) explained by isoprene oxidation ranges from 9-16%, 15-27%, and 22-32%, depending on the isoprene emissions scenario. Changes in the global tropospheric burden with different land cover inputs can reach up to 10% for CO, 15% for HCHO, and 20% for PAN. Changes for ozone are small on a global scale, but regionally differences are as large as 3DU in the tropospheric column and as large as 5 ppbv in the surface concentrations. Our results demonstrate that a careful integration of isoprene emissions and chemistry in CTMs is very important for simulating the budgets of a number of atmospheric trace gases. We further demonstrate that the model tagging scheme has the capability of improving conventional methods of constraining isoprene emissions from space-borne HCHO column observations, especially in regions where a considerable part of the variability in the HCHO column is not related to isoprene.</div>
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<fC02 i1="03" i2="2"><s0>220</s0>
</fC02>
<fC03 i1="01" i2="X" l="FRE"><s0>Isoprène</s0>
<s2>NK</s2>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="ENG"><s0>Isoprene</s0>
<s2>NK</s2>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="SPA"><s0>Isopreno</s0>
<s2>NK</s2>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="2" l="FRE"><s0>Modèle</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="2" l="ENG"><s0>models</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="2" l="SPA"><s0>Modelo</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="2" l="FRE"><s0>Traceur</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="2" l="ENG"><s0>tracers</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="2" l="SPA"><s0>Trazador</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="2" l="FRE"><s0>Analyse sensibilité</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="2" l="ENG"><s0>sensitivity analysis</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="2" l="FRE"><s0>Monde</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="2" l="ENG"><s0>global</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="2" l="SPA"><s0>Mundo</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="2" l="FRE"><s0>Transport</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="2" l="ENG"><s0>transport</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="2" l="SPA"><s0>Transporte</s0>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="2" l="FRE"><s0>Occupation sol</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="2" l="ENG"><s0>land cover</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="2" l="FRE"><s0>Troposphère</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="2" l="ENG"><s0>troposphere</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="2" l="FRE"><s0>Ozone</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="2" l="ENG"><s0>ozone</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="2" l="SPA"><s0>Ozono</s0>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="2" l="FRE"><s0>Gaz</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="2" l="ENG"><s0>gases</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="2" l="SPA"><s0>Gas</s0>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="2" l="FRE"><s0>Aérosol</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="2" l="ENG"><s0>aerosols</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="2" l="SPA"><s0>Aerosol</s0>
<s5>11</s5>
</fC03>
<fC03 i1="12" i2="2" l="FRE"><s0>Trajectoire</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="2" l="ENG"><s0>trajectory</s0>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="2" l="FRE"><s0>Carbone</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="2" l="ENG"><s0>carbon</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="2" l="SPA"><s0>Carbono</s0>
<s5>13</s5>
</fC03>
<fC03 i1="14" i2="2" l="FRE"><s0>Oxydation</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="2" l="ENG"><s0>oxidation</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="2" l="SPA"><s0>Oxidación</s0>
<s5>14</s5>
</fC03>
<fC03 i1="15" i2="2" l="FRE"><s0>Monoxyde carbone</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="2" l="ENG"><s0>carbon monoxide</s0>
<s5>15</s5>
</fC03>
<fC03 i1="16" i2="X" l="FRE"><s0>Monoxyde de carbone</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="X" l="ENG"><s0>Carbon monoxide</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="X" l="SPA"><s0>Carbono monóxido</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>16</s5>
</fC03>
<fC03 i1="17" i2="X" l="FRE"><s0>Formaldéhyde</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>17</s5>
</fC03>
<fC03 i1="17" i2="X" l="ENG"><s0>Formaldehyde</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>17</s5>
</fC03>
<fC03 i1="17" i2="X" l="SPA"><s0>Formaldehído</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>17</s5>
</fC03>
<fC03 i1="18" i2="3" l="FRE"><s0>Peracétique acide nitrate</s0>
<s2>NK</s2>
<s5>18</s5>
</fC03>
<fC03 i1="18" i2="3" l="ENG"><s0>Peroxyacetyl nitrate</s0>
<s2>NK</s2>
<s5>18</s5>
</fC03>
<fC03 i1="19" i2="X" l="FRE"><s0>Pan</s0>
<s2>NO</s2>
<s5>19</s5>
</fC03>
<fC03 i1="19" i2="X" l="ENG"><s0>Pan</s0>
<s2>NO</s2>
<s5>19</s5>
</fC03>
<fC03 i1="19" i2="X" l="SPA"><s0>Pan</s0>
<s2>NO</s2>
<s5>19</s5>
</fC03>
<fC03 i1="20" i2="X" l="FRE"><s0>Echelle planétaire</s0>
<s5>20</s5>
</fC03>
<fC03 i1="20" i2="X" l="ENG"><s0>Planetary scale</s0>
<s5>20</s5>
</fC03>
<fC03 i1="20" i2="X" l="SPA"><s0>Escala planetaria</s0>
<s5>20</s5>
</fC03>
<fC03 i1="21" i2="2" l="FRE"><s0>Concentration</s0>
<s5>21</s5>
</fC03>
<fC03 i1="21" i2="2" l="ENG"><s0>concentration</s0>
<s5>21</s5>
</fC03>
<fC03 i1="21" i2="2" l="SPA"><s0>Concentración</s0>
<s5>21</s5>
</fC03>
<fC03 i1="22" i2="X" l="FRE"><s0>Composé trace</s0>
<s5>22</s5>
</fC03>
<fC03 i1="22" i2="X" l="ENG"><s0>Trace compound</s0>
<s5>22</s5>
</fC03>
<fC03 i1="22" i2="X" l="SPA"><s0>Compuesto huella</s0>
<s5>22</s5>
</fC03>
<fC03 i1="23" i2="2" l="FRE"><s0>Variabilité</s0>
<s5>23</s5>
</fC03>
<fC03 i1="23" i2="2" l="ENG"><s0>variability</s0>
<s5>23</s5>
</fC03>
<fN21><s1>133</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
</pA>
</standard>
<server><NO>PASCAL 08-0208587 INIST</NO>
<ET>Contribution of isoprene to chemical budgets : A model tracer study with the NCAR CTM MOZART-4</ET>
<AU>PFISTER (G. G.); EMMONS (L. K.); HESS (P. G.); LAMARQUE (J.-F.); ORLANDO (J. J.); WALTERS (S.); GUENTHER (A.); PALMER (P. I.); LAWRENCE (P. J.)</AU>
<AF>National Center for Atmospheric Research/Boulder, Colorado/Etats-Unis (1 aut., 2 aut., 3 aut., 4 aut., 5 aut., 6 aut., 7 aut.); School of GeoSciences, University of Edinburgh/Edinburgh/Royaume-Uni (8 aut.); Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado/Boulder, Colorado/Etats-Unis (9 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Journal of geophysical research; ISSN 0148-0227; Etats-Unis; Da. 2008; Vol. 113; No. D5; D05308.1-D05308.21; Bibl. 1 p.1/2</SO>
<LA>Anglais</LA>
<EA>[1] We present a study of the sensitivity of isoprene emission calculations in a global chemistry transport model (CTM) to input land cover characteristics and analyze the impacts of changes in isoprene on the tropospheric budgets of atmospheric key species. The CTM Model for Ozone and Related Chemical Species, version 4 (MOZART-4) includes the online calculation of isoprene emissions based on the Model of Emissions of Gases and Aerosols from Nature (MEGAN), which is driven by three different land parameter inputs. We also included a tagging scheme in the CTM, which keeps track of the production of carbon containing species from isoprene oxidation. It is found that the amount of tropospheric carbon monoxide (CO), formaldehyde (HCHO) and peroxyacetylnitrate (PAN) explained by isoprene oxidation ranges from 9-16%, 15-27%, and 22-32%, depending on the isoprene emissions scenario. Changes in the global tropospheric burden with different land cover inputs can reach up to 10% for CO, 15% for HCHO, and 20% for PAN. Changes for ozone are small on a global scale, but regionally differences are as large as 3DU in the tropospheric column and as large as 5 ppbv in the surface concentrations. Our results demonstrate that a careful integration of isoprene emissions and chemistry in CTMs is very important for simulating the budgets of a number of atmospheric trace gases. We further demonstrate that the model tagging scheme has the capability of improving conventional methods of constraining isoprene emissions from space-borne HCHO column observations, especially in regions where a considerable part of the variability in the HCHO column is not related to isoprene.</EA>
<CC>001E; 001E01; 220</CC>
<FD>Isoprène; Modèle; Traceur; Analyse sensibilité; Monde; Transport; Occupation sol; Troposphère; Ozone; Gaz; Aérosol; Trajectoire; Carbone; Oxydation; Monoxyde carbone; Monoxyde de carbone; Formaldéhyde; Peracétique acide nitrate; Pan; Echelle planétaire; Concentration; Composé trace; Variabilité</FD>
<ED>Isoprene; models; tracers; sensitivity analysis; global; transport; land cover; troposphere; ozone; gases; aerosols; trajectory; carbon; oxidation; carbon monoxide; Carbon monoxide; Formaldehyde; Peroxyacetyl nitrate; Pan; Planetary scale; concentration; Trace compound; variability</ED>
<SD>Isopreno; Modelo; Trazador; Mundo; Transporte; Ozono; Gas; Aerosol; Carbono; Oxidación; Carbono monóxido; Formaldehído; Pan; Escala planetaria; Concentración; Compuesto huella</SD>
<LO>INIST-3144.354000183022170370</LO>
<ID>08-0208587</ID>
</server>
</inist>
</record>
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