Aerosols in polar regions: A historical overview based on optical depth and in situ observations
Identifieur interne : 002615 ( Main/Exploration ); précédent : 002614; suivant : 002616Aerosols in polar regions: A historical overview based on optical depth and in situ observations
Auteurs : C. Tomasi [Italie] ; V. Vitale [Italie] ; A. Lupi [Italie] ; C. Di Carmine [Italie] ; M. Campanelli [Italie] ; A. Herber [Allemagne] ; R. Treffeisen [Allemagne] ; R. S. Stone [États-Unis] ; E. Andrews [États-Unis] ; S. Sharma [Canada] ; V. Radionov [Russie] ; W. Von Hoyningen-Huene [Allemagne] ; K. Stebel [Norvège] ; G. H. Hansen [Norvège] ; C. L. Myhre [Norvège] ; C. Wehrli [Suisse] ; V. Aaltonen [Finlande] ; H. Lihavainen [Finlande] ; A. Virkkula [Finlande] ; R. Hillamo [Finlande] ; J. Ström [Suède] ; C. Toledano [Espagne] ; V. E. Cachorro [Espagne] ; P. Ortiz [Espagne] ; A. M. De Frutos [Espagne] ; S. Blindheim [Norvège] ; M. Frioud [Norvège] ; M. Gausa [Norvège] ; T. Zielinski [Pologne] ; T. Petelski [Pologne] ; T. Yamanouchi [Japon]Source :
- Journal of Geophysical Research: Atmospheres [ 0148-0227 ] ; 2007-08-27.
Abstract
Large sets of filtered actinometer, filtered pyrheliometer and Sun photometer measurements have been carried out over the past 30 years by various groups at different Arctic and Antarctic sites and for different time periods. They were examined to estimate ensemble average, long‐term trends of the summer background aerosol optical depth AOD(500 nm) in the polar regions (omitting the data influenced by Arctic haze and volcanic eruptions). The trend for the Arctic was estimated to be between −1.6% and −2.0% per year over 30 years, depending on location. No significant trend was observed for Antarctica. The time patterns of AOD(500 nm) and Ångström's parameters α and β measured with Sun photometers during the last 20 years at various Arctic and Antarctic sites are also presented. They give a measure of the large variations of these parameters due to El Chichon, Pinatubo, and Cerro Hudson volcanic particles, Arctic haze episodes most frequent in winter and spring, and the transport of Asian dust and boreal smokes to the Arctic region. Evidence is also shown of marked differences between the aerosol optical parameters measured at coastal and high‐altitude sites in Antarctica. In situ optical and chemical composition parameters of aerosol particles measured at Arctic and Antarctic sites are also examined to achieve more complete information on the multimodal size distribution shape parameters and their radiative properties. A characterization of aerosol radiative parameters is also defined by plotting the daily mean values of α as a function of AOD(500 nm), separately for the two polar regions, allowing the identification of different clusters related to fifteen aerosol classes, for which the spectral values of complex refractive index and single scattering albedo were evaluated.
Url:
DOI: 10.1029/2007JD008432
Affiliations:
- Allemagne, Canada, Espagne, Finlande, Italie, Japon, Norvège, Pologne, Russie, Suisse, Suède, États-Unis
- Brandebourg, Brême (Land), Latium, Svealand
- Brême, Potsdam, Rome, Stockholm, Tokyo
- Université de Stockholm
Links toward previous steps (curation, corpus...)
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- to stream Istex, to step Checkpoint: 000A95
- to stream Main, to step Merge: 002858
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Le document en format XML
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Treffeisen</name><affiliation wicri:level="3"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Alfred Wegener Institute of Polar and Marine Research, Potsdam</wicri:regionArea><placeName><region type="land" nuts="2">Brandebourg</region><settlement type="city">Potsdam</settlement></placeName></affiliation></author><author><name sortKey="Stone, R S" sort="Stone, R S" uniqKey="Stone R" first="R. S." last="Stone">R. S. Stone</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Global Monitoring Division, NOAA, Colorado, Boulder</wicri:regionArea><wicri:noRegion>Boulder</wicri:noRegion></affiliation></author><author><name sortKey="Andrews, E" sort="Andrews, E" uniqKey="Andrews E" first="E." last="Andrews">E. Andrews</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Global Monitoring Division, NOAA, Colorado, Boulder</wicri:regionArea><wicri:noRegion>Boulder</wicri:noRegion></affiliation></author><author><name sortKey="Sharma, S" sort="Sharma, S" uniqKey="Sharma S" first="S." last="Sharma">S. Sharma</name><affiliation wicri:level="1"><country xml:lang="fr">Canada</country><wicri:regionArea>Science and Technology Branch, Environment Canada, Toronto, Ontario</wicri:regionArea><wicri:noRegion>Ontario</wicri:noRegion></affiliation></author><author><name sortKey="Radionov, V" sort="Radionov, V" uniqKey="Radionov V" first="V." last="Radionov">V. Radionov</name><affiliation wicri:level="1"><country xml:lang="fr">Russie</country><wicri:regionArea>Arctic and Antarctic Research Institute, St. Petersburg</wicri:regionArea><wicri:noRegion>St. Petersburg</wicri:noRegion></affiliation></author><author><name sortKey="Von Hoyningen Uene, W" sort="Von Hoyningen Uene, W" uniqKey="Von Hoyningen Uene W" first="W." last="Von Hoyningen-Huene">W. Von Hoyningen-Huene</name><affiliation wicri:level="3"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Institute of Environmental Physics/Remote Sensing, University of Bremen, Bremen</wicri:regionArea><placeName><region type="land" nuts="3">Brême (Land)</region><settlement type="city">Brême</settlement></placeName></affiliation></author><author><name sortKey="Stebel, K" sort="Stebel, K" uniqKey="Stebel K" first="K." last="Stebel">K. Stebel</name><affiliation wicri:level="1"><country xml:lang="fr">Norvège</country><wicri:regionArea>Polar Environmental Centre, Norwegian Institute for Air Research, Tromsø</wicri:regionArea><wicri:noRegion>Tromsø</wicri:noRegion></affiliation></author><author><name sortKey="Hansen, G H" sort="Hansen, G H" uniqKey="Hansen G" first="G. H." last="Hansen">G. H. Hansen</name><affiliation wicri:level="1"><country xml:lang="fr">Norvège</country><wicri:regionArea>Polar Environmental Centre, Norwegian Institute for Air Research, Tromsø</wicri:regionArea><wicri:noRegion>Tromsø</wicri:noRegion></affiliation></author><author><name sortKey="Myhre, C L" sort="Myhre, C L" uniqKey="Myhre C" first="C. L." last="Myhre">C. L. Myhre</name><affiliation wicri:level="1"><country xml:lang="fr">Norvège</country><wicri:regionArea>Polar Environmental Centre, Norwegian Institute for Air Research, Tromsø</wicri:regionArea><wicri:noRegion>Tromsø</wicri:noRegion></affiliation></author><author><name sortKey="Wehrli, C" sort="Wehrli, C" uniqKey="Wehrli C" first="C." last="Wehrli">C. Wehrli</name><affiliation wicri:level="1"><country xml:lang="fr">Suisse</country><wicri:regionArea>Physikalisch‐Meteorologisches Observatorium/World Radiation Centre, Davos</wicri:regionArea><wicri:noRegion>Davos</wicri:noRegion></affiliation></author><author><name sortKey="Aaltonen, V" sort="Aaltonen, V" uniqKey="Aaltonen V" first="V." last="Aaltonen">V. Aaltonen</name><affiliation wicri:level="1"><country xml:lang="fr">Finlande</country><wicri:regionArea>Finnish Meteorological Institute, Helsinki</wicri:regionArea><wicri:noRegion>Helsinki</wicri:noRegion></affiliation></author><author><name sortKey="Lihavainen, H" sort="Lihavainen, H" uniqKey="Lihavainen H" first="H." last="Lihavainen">H. Lihavainen</name><affiliation wicri:level="1"><country xml:lang="fr">Finlande</country><wicri:regionArea>Finnish Meteorological Institute, Helsinki</wicri:regionArea><wicri:noRegion>Helsinki</wicri:noRegion></affiliation></author><author><name sortKey="Virkkula, A" sort="Virkkula, A" uniqKey="Virkkula A" first="A." last="Virkkula">A. Virkkula</name><affiliation wicri:level="1"><country xml:lang="fr">Finlande</country><wicri:regionArea>Finnish Meteorological Institute, Helsinki</wicri:regionArea><wicri:noRegion>Helsinki</wicri:noRegion></affiliation></author><author><name sortKey="Hillamo, R" sort="Hillamo, R" uniqKey="Hillamo R" first="R." last="Hillamo">R. Hillamo</name><affiliation wicri:level="1"><country xml:lang="fr">Finlande</country><wicri:regionArea>Finnish Meteorological Institute, Helsinki</wicri:regionArea><wicri:noRegion>Helsinki</wicri:noRegion></affiliation></author><author><name sortKey="Strom, J" sort="Strom, J" uniqKey="Strom J" first="J." last="Ström">J. Ström</name><affiliation wicri:level="4"><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Applied Environmental Science, Stockholm University, Stockholm</wicri:regionArea><placeName><settlement type="city">Stockholm</settlement><region nuts="2">Svealand</region><settlement type="city">Stockholm</settlement></placeName><orgName type="university">Université de Stockholm</orgName></affiliation></author><author><name sortKey="Toledano, C" sort="Toledano, C" uniqKey="Toledano C" first="C." last="Toledano">C. Toledano</name><affiliation wicri:level="1"><country xml:lang="fr">Espagne</country><wicri:regionArea>Grupo de Óptica Atmosférica, Universidad de Valladolid, Valladolid</wicri:regionArea><wicri:noRegion>Valladolid</wicri:noRegion></affiliation></author><author><name sortKey="Cachorro, V E" sort="Cachorro, V E" uniqKey="Cachorro V" first="V. E." last="Cachorro">V. E. Cachorro</name><affiliation wicri:level="1"><country xml:lang="fr">Espagne</country><wicri:regionArea>Grupo de Óptica Atmosférica, Universidad de Valladolid, Valladolid</wicri:regionArea><wicri:noRegion>Valladolid</wicri:noRegion></affiliation></author><author><name sortKey="Ortiz, P" sort="Ortiz, P" uniqKey="Ortiz P" first="P." last="Ortiz">P. Ortiz</name><affiliation wicri:level="1"><country xml:lang="fr">Espagne</country><wicri:regionArea>Grupo de Óptica Atmosférica, Universidad de Valladolid, Valladolid</wicri:regionArea><wicri:noRegion>Valladolid</wicri:noRegion></affiliation></author><author><name sortKey="De Frutos, A M" sort="De Frutos, A M" uniqKey="De Frutos A" first="A. M." last="De Frutos">A. M. De Frutos</name><affiliation wicri:level="1"><country xml:lang="fr">Espagne</country><wicri:regionArea>Grupo de Óptica Atmosférica, Universidad de Valladolid, Valladolid</wicri:regionArea><wicri:noRegion>Valladolid</wicri:noRegion></affiliation></author><author><name sortKey="Blindheim, S" sort="Blindheim, S" uniqKey="Blindheim S" first="S." last="Blindheim">S. Blindheim</name><affiliation wicri:level="1"><country xml:lang="fr">Norvège</country><wicri:regionArea>Andoya Rocket Range, Andenes</wicri:regionArea><wicri:noRegion>Andenes</wicri:noRegion></affiliation></author><author><name sortKey="Frioud, M" sort="Frioud, M" uniqKey="Frioud M" first="M." last="Frioud">M. Frioud</name><affiliation wicri:level="1"><country xml:lang="fr">Norvège</country><wicri:regionArea>Andoya Rocket Range, Andenes</wicri:regionArea><wicri:noRegion>Andenes</wicri:noRegion></affiliation></author><author><name sortKey="Gausa, M" sort="Gausa, M" uniqKey="Gausa M" first="M." last="Gausa">M. Gausa</name><affiliation wicri:level="1"><country xml:lang="fr">Norvège</country><wicri:regionArea>Andoya Rocket Range, Andenes</wicri:regionArea><wicri:noRegion>Andenes</wicri:noRegion></affiliation></author><author><name sortKey="Zielinski, T" sort="Zielinski, T" uniqKey="Zielinski T" first="T." last="Zielinski">T. Zielinski</name><affiliation wicri:level="1"><country xml:lang="fr">Pologne</country><wicri:regionArea>Institute of Oceanology, Polish Academy of Sciences, Sopot</wicri:regionArea><wicri:noRegion>Sopot</wicri:noRegion></affiliation></author><author><name sortKey="Petelski, T" sort="Petelski, T" uniqKey="Petelski T" first="T." last="Petelski">T. Petelski</name><affiliation wicri:level="1"><country xml:lang="fr">Pologne</country><wicri:regionArea>Institute of Oceanology, Polish Academy of Sciences, Sopot</wicri:regionArea><wicri:noRegion>Sopot</wicri:noRegion></affiliation></author><author><name sortKey="Yamanouchi, T" sort="Yamanouchi, T" uniqKey="Yamanouchi T" first="T." last="Yamanouchi">T. Yamanouchi</name><affiliation wicri:level="3"><country xml:lang="fr">Japon</country><wicri:regionArea>National Institute of Polar Research, Tokyo</wicri:regionArea><placeName><settlement type="city">Tokyo</settlement></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Geophysical Research: Atmospheres</title><title level="j" type="abbrev">J. Geophys. Res.</title><idno type="ISSN">0148-0227</idno><idno type="eISSN">2156-2202</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2007-08-27">2007-08-27</date><biblScope unit="volume">112</biblScope><biblScope unit="issue">D16</biblScope><biblScope unit="page" from="/">n/a</biblScope><biblScope unit="page" to="/">n/a</biblScope></imprint><idno type="ISSN">0148-0227</idno></series><idno type="istex">0D634AFA14B3FAFEC0837861F7E29B5320DA4E25</idno><idno type="DOI">10.1029/2007JD008432</idno><idno type="ArticleID">2007JD008432</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0148-0227</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Large sets of filtered actinometer, filtered pyrheliometer and Sun photometer measurements have been carried out over the past 30 years by various groups at different Arctic and Antarctic sites and for different time periods. They were examined to estimate ensemble average, long‐term trends of the summer background aerosol optical depth AOD(500 nm) in the polar regions (omitting the data influenced by Arctic haze and volcanic eruptions). The trend for the Arctic was estimated to be between −1.6% and −2.0% per year over 30 years, depending on location. No significant trend was observed for Antarctica. The time patterns of AOD(500 nm) and Ångström's parameters α and β measured with Sun photometers during the last 20 years at various Arctic and Antarctic sites are also presented. They give a measure of the large variations of these parameters due to El Chichon, Pinatubo, and Cerro Hudson volcanic particles, Arctic haze episodes most frequent in winter and spring, and the transport of Asian dust and boreal smokes to the Arctic region. Evidence is also shown of marked differences between the aerosol optical parameters measured at coastal and high‐altitude sites in Antarctica. In situ optical and chemical composition parameters of aerosol particles measured at Arctic and Antarctic sites are also examined to achieve more complete information on the multimodal size distribution shape parameters and their radiative properties. A characterization of aerosol radiative parameters is also defined by plotting the daily mean values of α as a function of AOD(500 nm), separately for the two polar regions, allowing the identification of different clusters related to fifteen aerosol classes, for which the spectral values of complex refractive index and single scattering albedo were evaluated.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Canada</li><li>Espagne</li><li>Finlande</li><li>Italie</li><li>Japon</li><li>Norvège</li><li>Pologne</li><li>Russie</li><li>Suisse</li><li>Suède</li><li>États-Unis</li></country><region><li>Brandebourg</li><li>Brême (Land)</li><li>Latium</li><li>Svealand</li></region><settlement><li>Brême</li><li>Potsdam</li><li>Rome</li><li>Stockholm</li><li>Tokyo</li></settlement><orgName><li>Université de Stockholm</li></orgName></list><tree><country name="Italie"><noRegion><name sortKey="Tomasi, C" sort="Tomasi, C" uniqKey="Tomasi C" first="C." last="Tomasi">C. Tomasi</name></noRegion><name sortKey="Campanelli, M" sort="Campanelli, M" uniqKey="Campanelli M" first="M." last="Campanelli">M. Campanelli</name><name sortKey="Di Carmine, C" sort="Di Carmine, C" uniqKey="Di Carmine C" first="C." last="Di Carmine">C. Di Carmine</name><name sortKey="Lupi, A" sort="Lupi, A" uniqKey="Lupi A" first="A." last="Lupi">A. Lupi</name><name sortKey="Tomasi, C" sort="Tomasi, C" uniqKey="Tomasi C" first="C." last="Tomasi">C. Tomasi</name><name sortKey="Vitale, V" sort="Vitale, V" uniqKey="Vitale V" first="V." last="Vitale">V. Vitale</name></country><country name="Allemagne"><noRegion><name sortKey="Herber, A" sort="Herber, A" uniqKey="Herber A" first="A." last="Herber">A. Herber</name></noRegion><name sortKey="Treffeisen, R" sort="Treffeisen, R" uniqKey="Treffeisen R" first="R." last="Treffeisen">R. Treffeisen</name><name sortKey="Von Hoyningen Uene, W" sort="Von Hoyningen Uene, W" uniqKey="Von Hoyningen Uene W" first="W." last="Von Hoyningen-Huene">W. Von Hoyningen-Huene</name></country><country name="États-Unis"><noRegion><name sortKey="Stone, R S" sort="Stone, R S" uniqKey="Stone R" first="R. S." last="Stone">R. S. Stone</name></noRegion><name sortKey="Andrews, E" sort="Andrews, E" uniqKey="Andrews E" first="E." last="Andrews">E. Andrews</name></country><country name="Canada"><noRegion><name sortKey="Sharma, S" sort="Sharma, S" uniqKey="Sharma S" first="S." last="Sharma">S. Sharma</name></noRegion></country><country name="Russie"><noRegion><name sortKey="Radionov, V" sort="Radionov, V" uniqKey="Radionov V" first="V." last="Radionov">V. Radionov</name></noRegion></country><country name="Norvège"><noRegion><name sortKey="Stebel, K" sort="Stebel, K" uniqKey="Stebel K" first="K." last="Stebel">K. Stebel</name></noRegion><name sortKey="Blindheim, S" sort="Blindheim, S" uniqKey="Blindheim S" first="S." last="Blindheim">S. Blindheim</name><name sortKey="Frioud, M" sort="Frioud, M" uniqKey="Frioud M" first="M." last="Frioud">M. Frioud</name><name sortKey="Gausa, M" sort="Gausa, M" uniqKey="Gausa M" first="M." last="Gausa">M. Gausa</name><name sortKey="Hansen, G H" sort="Hansen, G H" uniqKey="Hansen G" first="G. H." last="Hansen">G. H. Hansen</name><name sortKey="Myhre, C L" sort="Myhre, C L" uniqKey="Myhre C" first="C. L." last="Myhre">C. L. Myhre</name></country><country name="Suisse"><noRegion><name sortKey="Wehrli, C" sort="Wehrli, C" uniqKey="Wehrli C" first="C." last="Wehrli">C. Wehrli</name></noRegion></country><country name="Finlande"><noRegion><name sortKey="Aaltonen, V" sort="Aaltonen, V" uniqKey="Aaltonen V" first="V." last="Aaltonen">V. Aaltonen</name></noRegion><name sortKey="Hillamo, R" sort="Hillamo, R" uniqKey="Hillamo R" first="R." last="Hillamo">R. Hillamo</name><name sortKey="Lihavainen, H" sort="Lihavainen, H" uniqKey="Lihavainen H" first="H." last="Lihavainen">H. Lihavainen</name><name sortKey="Virkkula, A" sort="Virkkula, A" uniqKey="Virkkula A" first="A." last="Virkkula">A. Virkkula</name></country><country name="Suède"><region name="Svealand"><name sortKey="Strom, J" sort="Strom, J" uniqKey="Strom J" first="J." last="Ström">J. Ström</name></region></country><country name="Espagne"><noRegion><name sortKey="Toledano, C" sort="Toledano, C" uniqKey="Toledano C" first="C." last="Toledano">C. Toledano</name></noRegion><name sortKey="Cachorro, V E" sort="Cachorro, V E" uniqKey="Cachorro V" first="V. E." last="Cachorro">V. E. Cachorro</name><name sortKey="De Frutos, A M" sort="De Frutos, A M" uniqKey="De Frutos A" first="A. M." last="De Frutos">A. M. De Frutos</name><name sortKey="Ortiz, P" sort="Ortiz, P" uniqKey="Ortiz P" first="P." last="Ortiz">P. Ortiz</name></country><country name="Pologne"><noRegion><name sortKey="Zielinski, T" sort="Zielinski, T" uniqKey="Zielinski T" first="T." last="Zielinski">T. Zielinski</name></noRegion><name sortKey="Petelski, T" sort="Petelski, T" uniqKey="Petelski T" first="T." last="Petelski">T. Petelski</name></country><country name="Japon"><noRegion><name sortKey="Yamanouchi, T" sort="Yamanouchi, T" uniqKey="Yamanouchi T" first="T." last="Yamanouchi">T. Yamanouchi</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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