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|Title: ||Validation of NO2 and NO from the Atmospheric Chemistry Experiment (ACE)|
|Authors: ||Kerzenmacher, T.|
Wolff, M. A.
Walker, K. A.
Amekudzi, L. K.
|Issue Date: ||8-Oct-2008|
|Publisher: ||Atmos. Chem. Phys.|
|Citation: ||Atmos. Chem. Phys., 8, 5801–5841, 2008|
|Abstract: ||Vertical profiles of NO2 and NO have been
obtained from solar occultation measurements by the Atmospheric Chemistry Experiment (ACE), using an infrared Fourier Transform Spectrometer (ACE-FTS) and
(for NO2) an ultraviolet-visible-near-infrared spectrometer,
MAESTRO (Measurement of Aerosol Extinction in the
Stratosphere and Troposphere Retrieved by Occultation).
In this paper, the quality of the ACE-FTS version 2.2
NO2 and NO and the MAESTRO version 1.2 NO2 data
are assessed using other solar occultation measurements
(HALOE, SAGE II, SAGE III, POAM III, SCIAMACHY),
stellar occultation measurements (GOMOS), limb measurements (MIPAS, OSIRIS), nadir measurements (SCIAMACHY), balloon-borne measurements (SPIRALE, SAOZ)
and ground-based measurements (UV-VIS, FTIR). Time differences between the comparison measurements were reduced using either a tight coincidence criterion, or where
possible, chemical box models. ACE-FTS NO2 and NO and
the MAESTRO NO2 are generally consistent with the correlative data. The ACE-FTS and MAESTRO NO2 volume
mixing ratio (VMR) profiles agree with the profiles from
other satellite data sets to within about 20% between 25 and
40 km, with the exception of MIPAS ESA (for ACE-FTS)
and SAGE II (for ACE-FTS (sunrise) and MAESTRO) and
suggest a negative bias between 23 and 40 km of about 10%.
MAESTRO reports larger VMR values than the ACE-FTS.
In comparisons with HALOE, ACE-FTS NO VMRs typically (on average) agree to ±8% from 22 to 64 km and to
+10% from 93 to 105 km, with maxima of 21% and 36%,
respectively. Partial column comparisons for NO2 show that
there is quite good agreement between the ACE instruments
and the FTIRs, with a mean difference of +7.3% for ACEFTS and +12.8% for MAESTRO.|
|Description: ||An article by Atmos. Chem. Phys., 8, 5801–5841, 2008|
|Appears in Collections:||College of Science|
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