dot
Detailansicht
Katalogkarte GBA
Katalogkarte ISBD
Suche präzisieren
Drucken
Download RIS
Hier klicken, um den Treffer aus der Auswahl zu entfernen
Titel Halogen-driven ozone radiative impact in the tropical marine troposphere
VerfasserIn Alfonso Saiz-Lopez, Jean-Francois Lamarque, Douglas Kinnison, Carlos Ordóñez, Simone Tilmes
Konferenz EGU General Assembly 2011
Medientyp Artikel
Sprache Englisch
Digitales Dokument PDF
Erschienen In: GRA - Volume 13 (2011)
Datensatznummer 250050713
 
Zusammenfassung
Tropospheric ozone is an important climate gas and is produced by photochemical oxidation of carbon monoxide, methane and non-methane volatile organic compounds in the presence of nitrogen oxides. The chemical sinks of ozone in the troposphere are dominated by the tropics, where a large fraction of the tropospheric ozone loss occurs within the tropical marine boundary layer via photolysis to excited oxygen atoms O(1D) followed by reaction with water vapor, reactions with odd hydrogen radicals (HOx), and surface deposition. In addition, inorganic halogens (i.e., chlorine, bromine, and iodine species) are known to destroy ozone through efficient catalytic reaction cycles. In this study, we use the CAM-Chem chemistry climate model to examine the role that halogen chemistry has on the ozone budget and radiative forcing in the tropical marine atmosphere. CAM-CHEM accurately captures the daily and seasonal observed variation of ozone and halogen oxides in this region. Halogen-driven ozone depletion in the tropical marine troposphere and associated radiative impact will be discussed.