MozartV1, PascalFrancis, Corpus, bibRecord, 000036

Diagnostic tools for evaluating quasi-horizontal transport in global-scale chemistry models

Identifieur interne : 000036 ( PascalFrancis/Corpus ); précédent : 000035; suivant : 000037

Diagnostic tools for evaluating quasi-horizontal transport in global-scale chemistry models

Auteurs : Huikyo Lee ; Daeok Youn ; Kenneth O. Patten ; Seth C. Olsen ; Donald J. Wuebbles

Source :

Journal of geophysical research [ 0148-0227 ] ; 2012.

RBID : Pascal:12-0440499

Descripteurs français

Pascal (Inist)
- Transport, Echelle planétaire, Modèle climat, Troposphère, Stratosphère, Climat, Chimie atmosphérique, Intrusion, Zone tropicale, Air, Moyenne latitude, Phénomène transport, Monde, Surface isobare, Observation par satellite, Profil vertical, Fonction densité probabilité, Traceur chimique, Ozone, Instrumentation, Tropopause, Altitude, Coordonnée, Etude comparative, Population statistique.

English descriptors

KwdEn :
- Atmospheric chemistry, Climate models, Comparative study, Isobaric surface, Mid latitude, Planetary scale, Satellite observation, Transport process, Tropopause, Vertical profile, air, altitude, chemical tracers, climate, coordinates, global, instruments, intrusions, ozone, populations, probability density function, stratosphere, transport, tropical zone, troposphere.

Abstract

The upper troposphere and lower stratosphere (UTLS) plays an important role in climate and atmospheric chemistry. Despite its importance on the point of causing deep intrusions of tropics originated air into the midlatitudes, the quasi-horizontal transport process in the UTLS, represented by global chemistry-transport models (CTMs) or chemistry-climate models (CCMs), cannot easily be diagnosed with conventional analyses on isobaric surfaces. We use improved diagnostic tools to better evaluate CTMs and CCMs relative to satellite observations in the region of UTLS. Using the Hellinger distance, vertical profiles of probability density functions (PDFs) of chemical tracers simulated by the Model for OZone And Related chemical Tracers 3.1 (MOZART-3.1) are quantitatively compared with satellite data from the Microwave Limb Sounder (MLS) instrument in the tropopause relative altitude coordinate to characterize features of tracer distributions near the tropopause. Overall, the comparison of PDFs between MLS and MOZART-3.1 did not satisfy the same population assumption. Conditional PDFs are used to understand the meteorological differences between global climate models and the real atmosphere and the conditional PDFs between MOZART-3.1 and MLS showed better agreement compared to the original PDFs. The low static stability during high tropopause heights at midlatitudes suggests that the variation of tropopause height is related to transport processes from the tropics to midlatitudes. MOZART-3.1 with the GEOS4 GCM winds reproduces episodes of the tropical air intrusions. However, our diagnostic analyses show that the GEOS4 GCM did not properly reproduce the high tropopause cases at midlatitudes especially in spring.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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C01	`01`		`ENG`	@0 The upper troposphere and lower stratosphere (UTLS) plays an important role in climate and atmospheric chemistry. Despite its importance on the point of causing deep intrusions of tropics originated air into the midlatitudes, the quasi-horizontal transport process in the UTLS, represented by global chemistry-transport models (CTMs) or chemistry-climate models (CCMs), cannot easily be diagnosed with conventional analyses on isobaric surfaces. We use improved diagnostic tools to better evaluate CTMs and CCMs relative to satellite observations in the region of UTLS. Using the Hellinger distance, vertical profiles of probability density functions (PDFs) of chemical tracers simulated by the Model for OZone And Related chemical Tracers 3.1 (MOZART-3.1) are quantitatively compared with satellite data from the Microwave Limb Sounder (MLS) instrument in the tropopause relative altitude coordinate to characterize features of tracer distributions near the tropopause. Overall, the comparison of PDFs between MLS and MOZART-3.1 did not satisfy the same population assumption. Conditional PDFs are used to understand the meteorological differences between global climate models and the real atmosphere and the conditional PDFs between MOZART-3.1 and MLS showed better agreement compared to the original PDFs. The low static stability during high tropopause heights at midlatitudes suggests that the variation of tropopause height is related to transport processes from the tropics to midlatitudes. MOZART-3.1 with the GEOS4 GCM winds reproduces episodes of the tropical air intrusions. However, our diagnostic analyses show that the GEOS4 GCM did not properly reproduce the high tropopause cases at midlatitudes especially in spring.
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Format Inist (serveur)

NO :	PASCAL 12-0440499 INIST
ET :	Diagnostic tools for evaluating quasi-horizontal transport in global-scale chemistry models
AU :	LEE (Huikyo); YOUN (Daeok); PATTEN (Kenneth O.); OLSEN (Seth C.); WUEBBLES (Donald J.)
AF :	Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign/Urbana, Illinois/Etats-Unis (1 aut., 3 aut., 4 aut., 5 aut.); Now at Jet Propulsion Laboratory, California Institute of Technology/Pasadena, California/Etats-Unis (1 aut.); Department of Earth Science Education, Chungbuk National University/Cheongju/Corée, République de (2 aut.)
DT :	Publication en série; Niveau analytique
SO :	Journal of geophysical research; ISSN 0148-0227; Etats-Unis; Da. 2012; Vol. 117; No. D19; D19302.1-D19302.16; Bibl. 1 p.1/4
LA :	Anglais
EA :	The upper troposphere and lower stratosphere (UTLS) plays an important role in climate and atmospheric chemistry. Despite its importance on the point of causing deep intrusions of tropics originated air into the midlatitudes, the quasi-horizontal transport process in the UTLS, represented by global chemistry-transport models (CTMs) or chemistry-climate models (CCMs), cannot easily be diagnosed with conventional analyses on isobaric surfaces. We use improved diagnostic tools to better evaluate CTMs and CCMs relative to satellite observations in the region of UTLS. Using the Hellinger distance, vertical profiles of probability density functions (PDFs) of chemical tracers simulated by the Model for OZone And Related chemical Tracers 3.1 (MOZART-3.1) are quantitatively compared with satellite data from the Microwave Limb Sounder (MLS) instrument in the tropopause relative altitude coordinate to characterize features of tracer distributions near the tropopause. Overall, the comparison of PDFs between MLS and MOZART-3.1 did not satisfy the same population assumption. Conditional PDFs are used to understand the meteorological differences between global climate models and the real atmosphere and the conditional PDFs between MOZART-3.1 and MLS showed better agreement compared to the original PDFs. The low static stability during high tropopause heights at midlatitudes suggests that the variation of tropopause height is related to transport processes from the tropics to midlatitudes. MOZART-3.1 with the GEOS4 GCM winds reproduces episodes of the tropical air intrusions. However, our diagnostic analyses show that the GEOS4 GCM did not properly reproduce the high tropopause cases at midlatitudes especially in spring.
CC :	001E; 001E01; 220
FD :	Transport; Echelle planétaire; Modèle climat; Troposphère; Stratosphère; Climat; Chimie atmosphérique; Intrusion; Zone tropicale; Air; Moyenne latitude; Phénomène transport; Monde; Surface isobare; Observation par satellite; Profil vertical; Fonction densité probabilité; Traceur chimique; Ozone; Instrumentation; Tropopause; Altitude; Coordonnée; Etude comparative; Population statistique
ED :	transport; Planetary scale; Climate models; troposphere; stratosphere; climate; Atmospheric chemistry; intrusions; tropical zone; air; Mid latitude; Transport process; global; Isobaric surface; Satellite observation; Vertical profile; probability density function; chemical tracers; ozone; instruments; Tropopause; altitude; coordinates; Comparative study; populations
SD :	Transporte; Escala planetaria; Estratosfera; Clima; Intrusión; Zona tropical; Latitud media; Fenómeno transporte; Mundo; Superficie isobárica; Observación por satélite; Perfil vertical; Ozono; Instrumentación; Tropopausa; Altitud; Estudio comparativo; Población estadística
LO :	INIST-3144.354000502914680350
ID :	12-0440499

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Pascal:12-0440499

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<term>Zone tropicale</term>
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<term>Moyenne latitude</term>
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<term>Surface isobare</term>
<term>Observation par satellite</term>
<term>Profil vertical</term>
<term>Fonction densité probabilité</term>
<term>Traceur chimique</term>
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<front><div type="abstract" xml:lang="en">The upper troposphere and lower stratosphere (UTLS) plays an important role in climate and atmospheric chemistry. Despite its importance on the point of causing deep intrusions of tropics originated air into the midlatitudes, the quasi-horizontal transport process in the UTLS, represented by global chemistry-transport models (CTMs) or chemistry-climate models (CCMs), cannot easily be diagnosed with conventional analyses on isobaric surfaces. We use improved diagnostic tools to better evaluate CTMs and CCMs relative to satellite observations in the region of UTLS. Using the Hellinger distance, vertical profiles of probability density functions (PDFs) of chemical tracers simulated by the Model for OZone And Related chemical Tracers 3.1 (MOZART-3.1) are quantitatively compared with satellite data from the Microwave Limb Sounder (MLS) instrument in the tropopause relative altitude coordinate to characterize features of tracer distributions near the tropopause. Overall, the comparison of PDFs between MLS and MOZART-3.1 did not satisfy the same population assumption. Conditional PDFs are used to understand the meteorological differences between global climate models and the real atmosphere and the conditional PDFs between MOZART-3.1 and MLS showed better agreement compared to the original PDFs. The low static stability during high tropopause heights at midlatitudes suggests that the variation of tropopause height is related to transport processes from the tropics to midlatitudes. MOZART-3.1 with the GEOS4 GCM winds reproduces episodes of the tropical air intrusions. However, our diagnostic analyses show that the GEOS4 GCM did not properly reproduce the high tropopause cases at midlatitudes especially in spring.</div>
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<fA03 i2="1"><s0>J. geophys. res.</s0>
</fA03>
<fA05><s2>117</s2>
</fA05>
<fA06><s2>D19</s2>
</fA06>
<fA08 i1="01" i2="1" l="ENG"><s1>Diagnostic tools for evaluating quasi-horizontal transport in global-scale chemistry models</s1>
</fA08>
<fA11 i1="01" i2="1"><s1>LEE (Huikyo)</s1>
</fA11>
<fA11 i1="02" i2="1"><s1>YOUN (Daeok)</s1>
</fA11>
<fA11 i1="03" i2="1"><s1>PATTEN (Kenneth O.)</s1>
</fA11>
<fA11 i1="04" i2="1"><s1>OLSEN (Seth C.)</s1>
</fA11>
<fA11 i1="05" i2="1"><s1>WUEBBLES (Donald J.)</s1>
</fA11>
<fA14 i1="01"><s1>Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign</s1>
<s2>Urbana, Illinois</s2>
<s3>USA</s3>
<sZ>1 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</fA14>
<fA14 i1="02"><s1>Now at Jet Propulsion Laboratory, California Institute of Technology</s1>
<s2>Pasadena, California</s2>
<s3>USA</s3>
<sZ>1 aut.</sZ>
</fA14>
<fA14 i1="03"><s1>Department of Earth Science Education, Chungbuk National University</s1>
<s2>Cheongju</s2>
<s3>KOR</s3>
<sZ>2 aut.</sZ>
</fA14>
<fA20><s2>D19302.1-D19302.16</s2>
</fA20>
<fA21><s1>2012</s1>
</fA21>
<fA23 i1="01"><s0>ENG</s0>
</fA23>
<fA43 i1="01"><s1>INIST</s1>
<s2>3144</s2>
<s5>354000502914680350</s5>
</fA43>
<fA44><s0>0000</s0>
<s1>© 2012 INIST-CNRS. All rights reserved.</s1>
</fA44>
<fA45><s0>1 p.1/4</s0>
</fA45>
<fA47 i1="01" i2="1"><s0>12-0440499</s0>
</fA47>
<fA60><s1>P</s1>
</fA60>
<fA61><s0>A</s0>
</fA61>
<fA64 i1="01" i2="1"><s0>Journal of geophysical research</s0>
</fA64>
<fA66 i1="01"><s0>USA</s0>
</fA66>
<fC01 i1="01" l="ENG"><s0>The upper troposphere and lower stratosphere (UTLS) plays an important role in climate and atmospheric chemistry. Despite its importance on the point of causing deep intrusions of tropics originated air into the midlatitudes, the quasi-horizontal transport process in the UTLS, represented by global chemistry-transport models (CTMs) or chemistry-climate models (CCMs), cannot easily be diagnosed with conventional analyses on isobaric surfaces. We use improved diagnostic tools to better evaluate CTMs and CCMs relative to satellite observations in the region of UTLS. Using the Hellinger distance, vertical profiles of probability density functions (PDFs) of chemical tracers simulated by the Model for OZone And Related chemical Tracers 3.1 (MOZART-3.1) are quantitatively compared with satellite data from the Microwave Limb Sounder (MLS) instrument in the tropopause relative altitude coordinate to characterize features of tracer distributions near the tropopause. Overall, the comparison of PDFs between MLS and MOZART-3.1 did not satisfy the same population assumption. Conditional PDFs are used to understand the meteorological differences between global climate models and the real atmosphere and the conditional PDFs between MOZART-3.1 and MLS showed better agreement compared to the original PDFs. The low static stability during high tropopause heights at midlatitudes suggests that the variation of tropopause height is related to transport processes from the tropics to midlatitudes. MOZART-3.1 with the GEOS4 GCM winds reproduces episodes of the tropical air intrusions. However, our diagnostic analyses show that the GEOS4 GCM did not properly reproduce the high tropopause cases at midlatitudes especially in spring.</s0>
</fC01>
<fC02 i1="01" i2="3"><s0>001E</s0>
</fC02>
<fC02 i1="02" i2="2"><s0>001E01</s0>
</fC02>
<fC02 i1="03" i2="2"><s0>220</s0>
</fC02>
<fC03 i1="01" i2="2" l="FRE"><s0>Transport</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="2" l="ENG"><s0>transport</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="2" l="SPA"><s0>Transporte</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="X" l="FRE"><s0>Echelle planétaire</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="ENG"><s0>Planetary scale</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA"><s0>Escala planetaria</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="3" l="FRE"><s0>Modèle climat</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="3" l="ENG"><s0>Climate models</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="2" l="FRE"><s0>Troposphère</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="2" l="ENG"><s0>troposphere</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="2" l="FRE"><s0>Stratosphère</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="2" l="ENG"><s0>stratosphere</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="2" l="SPA"><s0>Estratosfera</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="2" l="FRE"><s0>Climat</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="2" l="ENG"><s0>climate</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="2" l="SPA"><s0>Clima</s0>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="3" l="FRE"><s0>Chimie atmosphérique</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="3" l="ENG"><s0>Atmospheric chemistry</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="2" l="FRE"><s0>Intrusion</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="2" l="ENG"><s0>intrusions</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="2" l="SPA"><s0>Intrusión</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="2" l="FRE"><s0>Zone tropicale</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="2" l="ENG"><s0>tropical zone</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="2" l="SPA"><s0>Zona tropical</s0>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="2" l="FRE"><s0>Air</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="2" l="ENG"><s0>air</s0>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="X" l="FRE"><s0>Moyenne latitude</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="ENG"><s0>Mid latitude</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="SPA"><s0>Latitud media</s0>
<s5>11</s5>
</fC03>
<fC03 i1="12" i2="X" l="FRE"><s0>Phénomène transport</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="ENG"><s0>Transport process</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="SPA"><s0>Fenómeno transporte</s0>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="2" l="FRE"><s0>Monde</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="2" l="ENG"><s0>global</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="2" l="SPA"><s0>Mundo</s0>
<s5>13</s5>
</fC03>
<fC03 i1="14" i2="X" l="FRE"><s0>Surface isobare</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="X" l="ENG"><s0>Isobaric surface</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="X" l="SPA"><s0>Superficie isobárica</s0>
<s5>14</s5>
</fC03>
<fC03 i1="15" i2="X" l="FRE"><s0>Observation par satellite</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="X" l="ENG"><s0>Satellite observation</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="X" l="SPA"><s0>Observación por satélite</s0>
<s5>15</s5>
</fC03>
<fC03 i1="16" i2="X" l="FRE"><s0>Profil vertical</s0>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="X" l="ENG"><s0>Vertical profile</s0>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="X" l="SPA"><s0>Perfil vertical</s0>
<s5>16</s5>
</fC03>
<fC03 i1="17" i2="2" l="FRE"><s0>Fonction densité probabilité</s0>
<s5>17</s5>
</fC03>
<fC03 i1="17" i2="2" l="ENG"><s0>probability density function</s0>
<s5>17</s5>
</fC03>
<fC03 i1="18" i2="2" l="FRE"><s0>Traceur chimique</s0>
<s5>18</s5>
</fC03>
<fC03 i1="18" i2="2" l="ENG"><s0>chemical tracers</s0>
<s5>18</s5>
</fC03>
<fC03 i1="19" i2="2" l="FRE"><s0>Ozone</s0>
<s5>19</s5>
</fC03>
<fC03 i1="19" i2="2" l="ENG"><s0>ozone</s0>
<s5>19</s5>
</fC03>
<fC03 i1="19" i2="2" l="SPA"><s0>Ozono</s0>
<s5>19</s5>
</fC03>
<fC03 i1="20" i2="2" l="FRE"><s0>Instrumentation</s0>
<s5>20</s5>
</fC03>
<fC03 i1="20" i2="2" l="ENG"><s0>instruments</s0>
<s5>20</s5>
</fC03>
<fC03 i1="20" i2="2" l="SPA"><s0>Instrumentación</s0>
<s5>20</s5>
</fC03>
<fC03 i1="21" i2="X" l="FRE"><s0>Tropopause</s0>
<s5>21</s5>
</fC03>
<fC03 i1="21" i2="X" l="ENG"><s0>Tropopause</s0>
<s5>21</s5>
</fC03>
<fC03 i1="21" i2="X" l="SPA"><s0>Tropopausa</s0>
<s5>21</s5>
</fC03>
<fC03 i1="22" i2="2" l="FRE"><s0>Altitude</s0>
<s5>22</s5>
</fC03>
<fC03 i1="22" i2="2" l="ENG"><s0>altitude</s0>
<s5>22</s5>
</fC03>
<fC03 i1="22" i2="2" l="SPA"><s0>Altitud</s0>
<s5>22</s5>
</fC03>
<fC03 i1="23" i2="2" l="FRE"><s0>Coordonnée</s0>
<s5>23</s5>
</fC03>
<fC03 i1="23" i2="2" l="ENG"><s0>coordinates</s0>
<s5>23</s5>
</fC03>
<fC03 i1="24" i2="X" l="FRE"><s0>Etude comparative</s0>
<s5>24</s5>
</fC03>
<fC03 i1="24" i2="X" l="ENG"><s0>Comparative study</s0>
<s5>24</s5>
</fC03>
<fC03 i1="24" i2="X" l="SPA"><s0>Estudio comparativo</s0>
<s5>24</s5>
</fC03>
<fC03 i1="25" i2="2" l="FRE"><s0>Population statistique</s0>
<s5>25</s5>
</fC03>
<fC03 i1="25" i2="2" l="ENG"><s0>populations</s0>
<s5>25</s5>
</fC03>
<fC03 i1="25" i2="2" l="SPA"><s0>Población estadística</s0>
<s5>25</s5>
</fC03>
<fN21><s1>345</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
</pA>
</standard>
<server><NO>PASCAL 12-0440499 INIST</NO>
<ET>Diagnostic tools for evaluating quasi-horizontal transport in global-scale chemistry models</ET>
<AU>LEE (Huikyo); YOUN (Daeok); PATTEN (Kenneth O.); OLSEN (Seth C.); WUEBBLES (Donald J.)</AU>
<AF>Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign/Urbana, Illinois/Etats-Unis (1 aut., 3 aut., 4 aut., 5 aut.); Now at Jet Propulsion Laboratory, California Institute of Technology/Pasadena, California/Etats-Unis (1 aut.); Department of Earth Science Education, Chungbuk National University/Cheongju/Corée, République de (2 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Journal of geophysical research; ISSN 0148-0227; Etats-Unis; Da. 2012; Vol. 117; No. D19; D19302.1-D19302.16; Bibl. 1 p.1/4</SO>
<LA>Anglais</LA>
<EA>The upper troposphere and lower stratosphere (UTLS) plays an important role in climate and atmospheric chemistry. Despite its importance on the point of causing deep intrusions of tropics originated air into the midlatitudes, the quasi-horizontal transport process in the UTLS, represented by global chemistry-transport models (CTMs) or chemistry-climate models (CCMs), cannot easily be diagnosed with conventional analyses on isobaric surfaces. We use improved diagnostic tools to better evaluate CTMs and CCMs relative to satellite observations in the region of UTLS. Using the Hellinger distance, vertical profiles of probability density functions (PDFs) of chemical tracers simulated by the Model for OZone And Related chemical Tracers 3.1 (MOZART-3.1) are quantitatively compared with satellite data from the Microwave Limb Sounder (MLS) instrument in the tropopause relative altitude coordinate to characterize features of tracer distributions near the tropopause. Overall, the comparison of PDFs between MLS and MOZART-3.1 did not satisfy the same population assumption. Conditional PDFs are used to understand the meteorological differences between global climate models and the real atmosphere and the conditional PDFs between MOZART-3.1 and MLS showed better agreement compared to the original PDFs. The low static stability during high tropopause heights at midlatitudes suggests that the variation of tropopause height is related to transport processes from the tropics to midlatitudes. MOZART-3.1 with the GEOS4 GCM winds reproduces episodes of the tropical air intrusions. However, our diagnostic analyses show that the GEOS4 GCM did not properly reproduce the high tropopause cases at midlatitudes especially in spring.</EA>
<CC>001E; 001E01; 220</CC>
<FD>Transport; Echelle planétaire; Modèle climat; Troposphère; Stratosphère; Climat; Chimie atmosphérique; Intrusion; Zone tropicale; Air; Moyenne latitude; Phénomène transport; Monde; Surface isobare; Observation par satellite; Profil vertical; Fonction densité probabilité; Traceur chimique; Ozone; Instrumentation; Tropopause; Altitude; Coordonnée; Etude comparative; Population statistique</FD>
<ED>transport; Planetary scale; Climate models; troposphere; stratosphere; climate; Atmospheric chemistry; intrusions; tropical zone; air; Mid latitude; Transport process; global; Isobaric surface; Satellite observation; Vertical profile; probability density function; chemical tracers; ozone; instruments; Tropopause; altitude; coordinates; Comparative study; populations</ED>
<SD>Transporte; Escala planetaria; Estratosfera; Clima; Intrusión; Zona tropical; Latitud media; Fenómeno transporte; Mundo; Superficie isobárica; Observación por satélite; Perfil vertical; Ozono; Instrumentación; Tropopausa; Altitud; Estudio comparativo; Población estadística</SD>
<LO>INIST-3144.354000502914680350</LO>
<ID>12-0440499</ID>
</server>
</inist>
</record>

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Diagnostic tools for evaluating quasi-horizontal transport in global-scale chemistry models

Diagnostic tools for evaluating quasi-horizontal transport in global-scale chemistry models

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