TY - JOUR
T1 - Distributions and seasonal variations of tropospheric ethene (C2H4) from Atmospheric Chemistry Experiment (ACE-FTS) solar occultation spectra
AU - Herbin, H.
AU - Hurtmans, D.
AU - Clarisse, L.
AU - Turquety, S.
AU - Clerbaux, C.
AU - Rinsland, C. P.
AU - Boone, C.
AU - Bernath, P. F.
AU - Coheur, P. -F.
PY - 2009/2/17
Y1 - 2009/2/17
N2 - This work reports the first measurements of ethene (C2H4)distributions in the upper troposphere. These are obtained by retrieving vertical profiles from 5 to 20 km from infrared solar occultation spectra recorded in 2005 and 2006 by the Atmospheric Chemistry Experiment-Fourier Transform Spectrometer (ACE-FTS). Background volume mixing ratios (vmrs) ranging from a few to about 50 pptv (10(-12)) are measured at the different altitudes, while for certain occultations, vmrs as high as 200 pptv are observed. Zonal distributions and vertically resolved latitudinal distributions are derived for the two year period analyzed, highlighting spatial -including a North-South gradient- as well as seasonal variations. We show the latter to be more pronounced at the highest latitudes, presumably as a result of less active photochemistry during winter. The observation of C2H4 enhancements in remote Arctic regions at high latitudes is consistent with the occurrence of fast transport processes of gaseous pollution from the continents leading to Arctic haze. Citation: Herbin, H., D. Hurtmans, L. Clarisse, S. Turquety, C. Clerbaux, C. P. Rinsland, C. Boone, P. F. Bernath, and P.-F. Coheur (2009), Distributions and seasonal variations of tropospheric ethene (C2H4) from Atmospheric Chemistry Experiment (ACE-FTS) solar occultation spectra, Geophys. Res. Lett., 36, L04801, doi:10.1029/2008GL036338.
AB - This work reports the first measurements of ethene (C2H4)distributions in the upper troposphere. These are obtained by retrieving vertical profiles from 5 to 20 km from infrared solar occultation spectra recorded in 2005 and 2006 by the Atmospheric Chemistry Experiment-Fourier Transform Spectrometer (ACE-FTS). Background volume mixing ratios (vmrs) ranging from a few to about 50 pptv (10(-12)) are measured at the different altitudes, while for certain occultations, vmrs as high as 200 pptv are observed. Zonal distributions and vertically resolved latitudinal distributions are derived for the two year period analyzed, highlighting spatial -including a North-South gradient- as well as seasonal variations. We show the latter to be more pronounced at the highest latitudes, presumably as a result of less active photochemistry during winter. The observation of C2H4 enhancements in remote Arctic regions at high latitudes is consistent with the occurrence of fast transport processes of gaseous pollution from the continents leading to Arctic haze. Citation: Herbin, H., D. Hurtmans, L. Clarisse, S. Turquety, C. Clerbaux, C. P. Rinsland, C. Boone, P. F. Bernath, and P.-F. Coheur (2009), Distributions and seasonal variations of tropospheric ethene (C2H4) from Atmospheric Chemistry Experiment (ACE-FTS) solar occultation spectra, Geophys. Res. Lett., 36, L04801, doi:10.1029/2008GL036338.
KW - GENERAL-CIRCULATION MODEL
KW - BIOMASS BURNING EMISSIONS
KW - NONMETHANE HYDROCARBONS
KW - TRANSPORT
KW - SPACE
KW - EVOLUTION
KW - METHANOL
KW - IMPACT
KW - GASES
KW - TRACE
UR - http://www.scopus.com/inward/record.url?scp=66149160511&partnerID=8YFLogxK
U2 - 10.1029/2008GL036338
DO - 10.1029/2008GL036338
M3 - Article
SN - 0094-8276
VL - 36
SP - -
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 4
M1 - L04801
ER -