Research Spotlight: Changing atmospheric chemistry with the swing of an axe
Identifieur interne : 000054 ( Main/Exploration ); précédent : 000053; suivant : 000055Research Spotlight: Changing atmospheric chemistry with the swing of an axe
Auteurs : Colin Schultz [États-Unis]Source :
- Eos, Transactions American Geophysical Union [ 0096-3941 ] ; 2011-03-08.
Descripteurs français
- Wicri :
- topic : Arctique, Changement climatique.
English descriptors
- KwdEn :
- Arctic, Arctic ocean, Arctic summer, Carbon cycle, Climate change, Climate models, Cultural legitimacy, Exergy, Geophysical, Geophysical research letters, Global carbon cycle, Goce, Gravity field, Greenhouse gases, Life cycle assessment, Lower atmosphere, Nitric, Nitric oxide, Nitric oxide emissions, Ocean currents.
- Teeft :
- Arctic, Arctic ocean, Arctic summer, Carbon cycle, Climate change, Climate models, Cultural legitimacy, Exergy, Geophysical, Geophysical research letters, Global carbon cycle, Goce, Gravity field, Greenhouse gases, Life cycle assessment, Lower atmosphere, Nitric, Nitric oxide, Nitric oxide emissions, Ocean currents.
Abstract
When a tree is cut down, carbon that has been stored for tens, hundreds, or even thousands of years is released to the environment. In addition, felling that tree slightly alters the wind's path through the woods. If enough forest is cleared, significant changes can be seen in weather patterns and the global carbon cycle. However, the forest is more than a box of carbon and a wind screen. In a new study,Ganzeveld et al. used a climate model that takes into account atmospheric chemistry and gas exchanges at the Earth's surface. The researchers wanted to understand the long‐term effects of land use change, which, in addition to carbon cycle and weather pattern effects, can also affect concentrations of various reactive trace gases in the atmosphere, including greenhouse gases such as methane and ozone. Using a land cover and land use projection for the year 2050, the authors find that Earth should expect higher concentrations of ground‐level ozone and an increase in the oxidizing capacity of the atmosphere. As deforestation continues, the amount of turbulence in the lower atmosphere will decrease, reducing mixing and leading to a buildup of ground‐level ozone. (Journal of Geophysical Research‐Atmospheres, doi:10.1029/2010JD014041, 2010)
Url:
DOI: 10.1029/2011EO100012
Affiliations:
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C.</wicri:regionArea><wicri:noRegion>D. C.</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Eos, Transactions American Geophysical Union</title><title level="j" type="alt">EOS, TRANSACTIONS AMERICAN GEOPHYSICAL UNION</title><idno type="ISSN">0096-3941</idno><idno type="eISSN">2324-9250</idno><imprint><biblScope unit="vol">92</biblScope><biblScope unit="issue">10</biblScope><biblScope unit="page" from="88">88</biblScope><biblScope unit="page" to="88">88</biblScope><biblScope unit="page-count">1</biblScope><date type="published" when="2011-03-08">2011-03-08</date></imprint><idno type="ISSN">0096-3941</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0096-3941</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Arctic</term><term>Arctic ocean</term><term>Arctic summer</term><term>Carbon cycle</term><term>Climate change</term><term>Climate models</term><term>Cultural legitimacy</term><term>Exergy</term><term>Geophysical</term><term>Geophysical research letters</term><term>Global carbon cycle</term><term>Goce</term><term>Gravity field</term><term>Greenhouse gases</term><term>Life cycle assessment</term><term>Lower atmosphere</term><term>Nitric</term><term>Nitric oxide</term><term>Nitric oxide emissions</term><term>Ocean currents</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Arctic</term><term>Arctic ocean</term><term>Arctic summer</term><term>Carbon cycle</term><term>Climate change</term><term>Climate models</term><term>Cultural legitimacy</term><term>Exergy</term><term>Geophysical</term><term>Geophysical research letters</term><term>Global carbon cycle</term><term>Goce</term><term>Gravity field</term><term>Greenhouse gases</term><term>Life cycle assessment</term><term>Lower atmosphere</term><term>Nitric</term><term>Nitric oxide</term><term>Nitric oxide emissions</term><term>Ocean currents</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Arctique</term><term>Changement climatique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract">When a tree is cut down, carbon that has been stored for tens, hundreds, or even thousands of years is released to the environment. In addition, felling that tree slightly alters the wind's path through the woods. If enough forest is cleared, significant changes can be seen in weather patterns and the global carbon cycle. However, the forest is more than a box of carbon and a wind screen. In a new study,Ganzeveld et al. used a climate model that takes into account atmospheric chemistry and gas exchanges at the Earth's surface. The researchers wanted to understand the long‐term effects of land use change, which, in addition to carbon cycle and weather pattern effects, can also affect concentrations of various reactive trace gases in the atmosphere, including greenhouse gases such as methane and ozone. Using a land cover and land use projection for the year 2050, the authors find that Earth should expect higher concentrations of ground‐level ozone and an increase in the oxidizing capacity of the atmosphere. As deforestation continues, the amount of turbulence in the lower atmosphere will decrease, reducing mixing and leading to a buildup of ground‐level ozone. (Journal of Geophysical Research‐Atmospheres, doi:10.1029/2010JD014041, 2010)</div></front></TEI><affiliations><list><country><li>États-Unis</li></country></list><tree><country name="États-Unis"><noRegion><name sortKey="Schultz, Colin" sort="Schultz, Colin" uniqKey="Schultz C" first="Colin" last="Schultz">Colin Schultz</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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