INGEBI   02650
INSTITUTO DE INVESTIGACIONES EN INGENIERIA GENETICA Y BIOLOGIA MOLECULAR "DR. HECTOR N TORRES"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
NO2 climatology at Southern Polar Regions
Autor/es:
YELA, M.; GIL, M.; NAVARRO, M.; ALONSO, I.; OCHOA, H.; DEFERRARI, G.; DIAZ, S.
Lugar:
Tromso, Noruega
Reunión:
Simposio; Quadriennial Ozone Symposium 2008; 2008
Institución organizadora:
WMO
Resumen:
A long term monitoring program for NO2 vertical column (VCD) by zenith-sky visible absorption spectroscopy
in the Antarctic region was initiated in 1994 by an Agreement between INTA (Spain) and DNA/IAA
(Argentina). Three scanning spectrometers were deployed at Ushuaia (55ºS, 68ºW), Marambio (64ºS, 56ºW) and
Belgrano (78ºS, 35ºW) between 1994 and 1995. The stations are representatives of mid latitudes, the edge and
the core of the Antarctic polar vortex, respectively. Spectra have been reanalysed by using common cross
sections settings defined as standard in the Andoya NDACC intercomparison in order to homogenize the data for
a proper comparison between instruments. Based on 14 years daily mean (1994-2007) a picture of the meridional
distribution of the NO2 VCD at high latitude has been obtained by the analyses of seasonal wave, interannual
variability, diurnal variation and dependence with the light available. Ground based (GB) data are compared to
GOME and SCIMACHY measurements for the three stations. A photochemical box model has been used to
correct for differences in times of measurements between satellites and GB. However, some seasonal
dependence still remains. NO2 seasonal wave at tropical/mid latitudes is modulated by photochemistry through
the number of light hours in the stratosphere and to a lesser extend by the upper stratosphere temperature, but in
high latitude this wavy structure is distorted by denitrification processes within the vortex as can be seen by the
strong asymmetry between autumn and spring in the NO2 VCD as a function of the hours of light.
the number of light hours in the stratosphere and to a lesser extend by the upper stratosphere temperature, but in
high latitude this wavy structure is distorted by denitrification processes within the vortex as can be seen by the
strong asymmetry between autumn and spring in the NO2 VCD as a function of the hours of light.
variability, diurnal variation and dependence with the light available. Ground based (GB) data are compared to
GOME and SCIMACHY measurements for the three stations. A photochemical box model has been used to
correct for differences in times of measurements between satellites and GB. However, some seasonal
dependence still remains. NO2 seasonal wave at tropical/mid latitudes is modulated by photochemistry through
the number of light hours in the stratosphere and to a lesser extend by the upper stratosphere temperature, but in
high latitude this wavy structure is distorted by denitrification processes within the vortex as can be seen by the
strong asymmetry between autumn and spring in the NO2 VCD as a function of the hours of light.
the number of light hours in the stratosphere and to a lesser extend by the upper stratosphere temperature, but in
high latitude this wavy structure is distorted by denitrification processes within the vortex as can be seen by the
strong asymmetry between autumn and spring in the NO2 VCD as a function of the hours of light.
in the Antarctic region was initiated in 1994 by an Agreement between INTA (Spain) and DNA/IAA
(Argentina). Three scanning spectrometers were deployed at Ushuaia (55ºS, 68ºW), Marambio (64ºS, 56ºW) and
Belgrano (78ºS, 35ºW) between 1994 and 1995. The stations are representatives of mid latitudes, the edge and
the core of the Antarctic polar vortex, respectively. Spectra have been reanalysed by using common cross
sections settings defined as standard in the Andoya NDACC intercomparison in order to homogenize the data for
a proper comparison between instruments. Based on 14 years daily mean (1994-2007) a picture of the meridional
distribution of the NO2 VCD at high latitude has been obtained by the analyses of seasonal wave, interannual
variability, diurnal variation and dependence with the light available. Ground based (GB) data are compared to
GOME and SCIMACHY measurements for the three stations. A photochemical box model has been used to
correct for differences in times of measurements between satellites and GB. However, some seasonal
dependence still remains. NO2 seasonal wave at tropical/mid latitudes is modulated by photochemistry through
the number of light hours in the stratosphere and to a lesser extend by the upper stratosphere temperature, but in
high latitude this wavy structure is distorted by denitrification processes within the vortex as can be seen by the
strong asymmetry between autumn and spring in the NO2 VCD as a function of the hours of light.
the number of light hours in the stratosphere and to a lesser extend by the upper stratosphere temperature, but in
high latitude this wavy structure is distorted by denitrification processes within the vortex as can be seen by the
strong asymmetry between autumn and spring in the NO2 VCD as a function of the hours of light.
variability, diurnal variation and dependence with the light available. Ground based (GB) data are compared to
GOME and SCIMACHY measurements for the three stations. A photochemical box model has been used to
correct for differences in times of measurements between satellites and GB. However, some seasonal
dependence still remains. NO2 seasonal wave at tropical/mid latitudes is modulated by photochemistry through
the number of light hours in the stratosphere and to a lesser extend by the upper stratosphere temperature, but in
high latitude this wavy structure is distorted by denitrification processes within the vortex as can be seen by the
strong asymmetry between autumn and spring in the NO2 VCD as a function of the hours of light.
the number of light hours in the stratosphere and to a lesser extend by the upper stratosphere temperature, but in
high latitude this wavy structure is distorted by denitrification processes within the vortex as can be seen by the
strong asymmetry between autumn and spring in the NO2 VCD as a function of the hours of light.
2 vertical column (VCD) by zenith-sky visible absorption spectroscopy
in the Antarctic region was initiated in 1994 by an Agreement between INTA (Spain) and DNA/IAA
(Argentina). Three scanning spectrometers were deployed at Ushuaia (55ºS, 68ºW), Marambio (64ºS, 56ºW) and
Belgrano (78ºS, 35ºW) between 1994 and 1995. The stations are representatives of mid latitudes, the edge and
the core of the Antarctic polar vortex, respectively. Spectra have been reanalysed by using common cross
sections settings defined as standard in the Andoya NDACC intercomparison in order to homogenize the data for
a proper comparison between instruments. Based on 14 years daily mean (1994-2007) a picture of the meridional
distribution of the NO2 VCD at high latitude has been obtained by the analyses of seasonal wave, interannual
variability, diurnal variation and dependence with the light available. Ground based (GB) data are compared to
GOME and SCIMACHY measurements for the three stations. A photochemical box model has been used to
correct for differences in times of measurements between satellites and GB. However, some seasonal
dependence still remains. NO2 seasonal wave at tropical/mid latitudes is modulated by photochemistry through
the number of light hours in the stratosphere and to a lesser extend by the upper stratosphere temperature, but in
high latitude this wavy structure is distorted by denitrification processes within the vortex as can be seen by the
strong asymmetry between autumn and spring in the NO2 VCD as a function of the hours of light.
the number of light hours in the stratosphere and to a lesser extend by the upper stratosphere temperature, but in
high latitude this wavy structure is distorted by denitrification processes within the vortex as can be seen by the
strong asymmetry between autumn and spring in the NO2 VCD as a function of the hours of light.
variability, diurnal variation and dependence with the light available. Ground based (GB) data are compared to
GOME and SCIMACHY measurements for the three stations. A photochemical box model has been used to
correct for differences in times of measurements between satellites and GB. However, some seasonal
dependence still remains. NO2 seasonal wave at tropical/mid latitudes is modulated by photochemistry through
the number of light hours in the stratosphere and to a lesser extend by the upper stratosphere temperature, but in
high latitude this wavy structure is distorted by denitrification processes within the vortex as can be seen by the
strong asymmetry between autumn and spring in the NO2 VCD as a function of the hours of light.
the number of light hours in the stratosphere and to a lesser extend by the upper stratosphere temperature, but in
high latitude this wavy structure is distorted by denitrification processes within the vortex as can be seen by the
strong asymmetry between autumn and spring in the NO2 VCD as a function of the hours of light.
2 VCD at high latitude has been obtained by the analyses of seasonal wave, interannual
variability, diurnal variation and dependence with the light available. Ground based (GB) data are compared to
GOME and SCIMACHY measurements for the three stations. A photochemical box model has been used to
correct for differences in times of measurements between satellites and GB. However, some seasonal
dependence still remains. NO2 seasonal wave at tropical/mid latitudes is modulated by photochemistry through
the number of light hours in the stratosphere and to a lesser extend by the upper stratosphere temperature, but in
high latitude this wavy structure is distorted by denitrification processes within the vortex as can be seen by the
strong asymmetry between autumn and spring in the NO2 VCD as a function of the hours of light.
the number of light hours in the stratosphere and to a lesser extend by the upper stratosphere temperature, but in
high latitude this wavy structure is distorted by denitrification processes within the vortex as can be seen by the
strong asymmetry between autumn and spring in the NO2 VCD as a function of the hours of light.
2 seasonal wave at tropical/mid latitudes is modulated by photochemistry through
the number of light hours in the stratosphere and to a lesser extend by the upper stratosphere temperature, but in
high latitude this wavy structure is distorted by denitrification processes within the vortex as can be seen by the
strong asymmetry between autumn and spring in the NO2 VCD as a function of the hours of light.2 VCD as a function of the hours of light.