Articles | Volume 15, issue 18
https://doi.org/10.5194/acp-15-10567-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-15-10567-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
25 Sep 2015
Research article |
| 25 Sep 2015
NO2 seasonal evolution in the north subtropical free troposphere
M. Gil-Ojeda
CORRESPONDING AUTHOR
Instituto Nacional de Técnica Aeroespacial, Torrejón de Ardoz, Spain
M. Navarro-Comas
Instituto Nacional de Técnica Aeroespacial, Torrejón de Ardoz, Spain
L. Gómez-Martín
Instituto Nacional de Técnica Aeroespacial, Torrejón de Ardoz, Spain
Groupe de Spectrométrie Moléculaire et Atmosphérique, URM CNRS 7331, UFR Sciences Exactes et Naturelles, Moulin de la Housse, BP 1039, 51687 Reims CEDEX 2, France
J. A. Adame
Instituto Nacional de Técnica Aeroespacial, Torrejón de Ardoz, Spain
A. Saiz-Lopez
Atmospheric Chemistry and Climate Group, Institute of Physical Chemistry Rocasolano, CSIC, Madrid, Spain
C. A. Cuevas
Atmospheric Chemistry and Climate Group, Institute of Physical Chemistry Rocasolano, CSIC, Madrid, Spain
Y. González
Izaña Atmospheric Research Center, AEMET, Tenerife, Spain
O. Puentedura
Instituto Nacional de Técnica Aeroespacial, Torrejón de Ardoz, Spain
E. Cuevas
Izaña Atmospheric Research Center, AEMET, Tenerife, Spain
J.-F. Lamarque
Atmospheric Chemistry Division, NCAR, Boulder, CO, USA
D. Kinninson
Atmospheric Chemistry Division, NCAR, Boulder, CO, USA
S. Tilmes
Atmospheric Chemistry Division, NCAR, Boulder, CO, USA
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Latest update: 29 Nov 2025
Short summary
The NO2 seasonal evolution in the free troposphere (FT) has been established for the first time, based on a remote sensing technique (MAXDOAS) and thus avoiding the problems of the local pollution of in situ instruments. A clear seasonality has been found, with background levels of 20-40pptv. Evidence has been found on fast, direct injection of surface air into the free troposphere. This result might have implications on the FT distribution of halogens and other species with marine sources.
The NO2 seasonal evolution in the free troposphere (FT) has been established for the first time,...
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