Comparisons of ODIN O3 and NO2 profiles with balloon and POAM III satellite measurements in summer 2

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Comparisons of ODIN O3 and NO2 profiles with
balloon and POAM III satellite measurements in
summer 2001
Ariane Bazureau and Florence Goutail Service
dAéronomie / CNRS Verrières le Buisson, France.
With collaborators J.P. Pommereau, C.
Camy-Peyret, P. Jeseck, S. Payan, G. Dufour, C.
S. Haley, D.J.W. Kendall, F. Weidner, H. Boesch,
K. Pfeilsticker, E. Kyro, G. Moreau, C. Robert,
M. Pirre, F. Goffinon-Taupin, P. Ricaud, J. De la
Noé and R. Bevilacqua.
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During BALODIN campaign CNES balloon validation
campaign of OSIRIS and SMR instruments aboard the
Swedish/Finnish/ French/Canadian research
satellite ODIN Validated profiling balloon-borne
instruments LPMA Remote sensing FTIR
spectrometer operating in absorption against the
sun vertical distribution of O3, NO2 (among
others constituents) with mixing ratios as small
as 0.1 ppbv. DOAS UV Visible spectrometer
321-422 nm and 417-669 nm associated with
LPMA on the same gondola. Accuracy 7 for O3
and 11-15 for NO2 SAOZ UV-Visible
spectrometer, 290 -620 nm, 1nm resolution Vertica
l profiles of O3, NO2 Accuracy 3 for O3 and
10 for NO2 SPIRALE in-situ diode laser
(open-cell). Vertical profiles of O3, NO2 and
others Accuracy 3 for O3 and 5 for NO2
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POAM III satellite instrument
Launched on SPOT 4 satellite (CNES) on March
1998 Heliosynchronous quasi-polar orbit HN
(sunrise) HS (sunset) 14 profiles/ day in each
hemisphere (at the same latitude) Between 55 72
N varying with season Solar occultation
technique in UV- visible band Vertical profils of
O3, NO2, H2O Vertical resolution 1 km for O3
1.5 to 2.5 km for NO2 Accuracy 7-10 for O3
(14-30 km) 5 for NO2 (20-40 km )
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Balodin Campaign
OSIRIS data
GAP, June 2001
OSIRIS O3 retrievals are provided by C. Haley
(version 1.0)
GAP / SAOZ
SPIRALE
OSIRIS
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O3 Profile / OSIRIS
OSIRIS shifted downward by 3 km
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Balodin Campaign
Kiruna, August 21-23., 2001
OSIRIS and SMR data
ODIN
OSIRIS NO2 retrievals are provided by C. Haley
(version 1.0) OSIRIS O3 profiles provided by
David J.W. Kendall SMR O3 profiles at 501 GHz
originates from Moliere inversion products (CTSO
version 220)
Sodankyla / ozone sonde
Kiruna / SAOZ, LPMA, DOAS
Coïncidence Distance ODIN / POAM 800
km Distance ODIN/ SAOZ/LPMA/DOAS 400 km
POAM III
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O3 Profile / OSIRIS
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O3 Mean Profile / SMR
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NO2 Profile / OSIRISDuring the balloon ascent
during the late afternoon (17-18h UT)
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Conclusions
Several balloon flights of remote payloads
collocated with ODIN overpasses have been
performed in France and Sweden The ODIN O3
measurements are found consistent with that of
the balloons as well as the POAM instrument also
in orbit within 5-10 between 10 and 30
km Since NO2 displays a diurnal variation, the
comparison is focused during the balloon ascent
in the late afternoon at the time of the
overpasses of ODIN (between 17 and 18h UT)
OSIRIS / LPMA/ SAOZ are consistent within 5
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Future work A photochemical model (Reprobus
1D) will be used for a better estimate of the
ODIN performance regarding NO2 Comparisons with
SAOZ flights performed since summer 2002 is under
consideration Aire sur lAdour, France May
14, 2002 Kiruna, Sweden August 12-13,
2002 Vanscoy, Canada September 3-4,
2002 Aire sur lAdour, France October 1 and 4,
2002