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Nitric acid partitioning in cirrus clouds: the role of aerosol particles and relative humidity

Krämer, Michael and Schiller, Cornelius and Ziereis, Helmut and Ovarlez, Joëlle and Bunz, Helmut (2006) Nitric acid partitioning in cirrus clouds: the role of aerosol particles and relative humidity. Tellus, 58B, pp. 141-147. doi: 10.1111/j.1600-0889.2006.00177.x.

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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1600-0889.2006.00177.x/pdf


Owing to the potential of cirrus clouds to vertically redistribute HNO<sub>3</sub> in the upper troposphere, the uptake of HNO<sub>3</sub> in ice particles is at the focus of recent research. Here, we investigate whether HNO<sub>3</sub> residing in freezing aerosol particles could be a relevant source of HNO<sub>3</sub> in ice clouds. To this end, model studies on the sensitivity of the uptake of HNO<sub>3</sub> in aerosol particles to temperature, relative humidity with respect to ice (RHice), particle composition and amount of available HNO<sub>3</sub> were performed. Combining the model results with the history of RHice during cirrus formation and comparison with field measurements indicates that at temperatures .lt. 200 K a considerable part of the HNO<sub>3</sub> in ice may originate from freezing particles containing HNO<sub>3</sub>.

Item URL in elib:https://elib.dlr.de/43836/
Document Type:Article
Title:Nitric acid partitioning in cirrus clouds: the role of aerosol particles and relative humidity
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Krämer, MichaelFZ Jülich, JülichUNSPECIFIED
Schiller, CorneliusFZ Jülich, JülichUNSPECIFIED
Ovarlez, JoëlleCNRS Lab. de Météorologie Dynamique, Palaiseau, FUNSPECIFIED
Bunz, HelmutFZ Karlsruhe, KarlsruheUNSPECIFIED
Journal or Publication Title:Tellus
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Page Range:pp. 141-147
Keywords:Nitric Acid, Cirrus Clouds, Upper Troposphere
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Atmosphären- und Klimaforschung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Freund, Jana
Deposited On:12 Sep 2007
Last Modified:04 Sep 2012 16:38

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