MRB For SPU Data Errors

1
Tracer Subgroup Session Agenda

• MLS N2O Nathaniel Livesey
• Balloon, HAVE-II, PAVE/ASUR, MIPAS, SMR/ODIN,
  ACE
• MLS and ACE N2O Kaley Walker
• MLS, MANTRA (future)
• MLS and Odin/SMR N2O Brice Barret
• MLS HCN Validation Carlos Jimenez (for Hugh
  Pumphrey)

2
Overview of the EOS MLS N2O Products
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Overview of the EOS MLS N2O Products

4
In Situ Comparison from Balloons, September 2004.
5
In Situ N2O Comparison from Aircraft, Houston AVE
2005
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MLS N2O Comparison With MIPAS
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MLS N2O Comparison with ODIN/SMR Brice Barret et
al. Laboratoire dAérologie / Observatoire
Midi-Pyrénées, Toulouse, France)

• Mean profiles
• Excellent agreement from 68.1 to 1 hPa
• MLS gt SMR below 68.1 hPa ? bias up to 60 at 147
  hPa
• MLS lt SMR above 68.1 hPa ? 10-15

8
N2O ACE-FTS vs. MLS
Above 75 hPa, ACE-FTS is 10 higher than MLS
Lucien Froidevaux
9
MLS/SMR N2O Comparison Summary
10
Middle Atmosphere Nitrogen Trend Assessment
(MANTRA)

• Canadian balloon mission to study the changing
  chemical balance of the mid-latitude stratosphere
• vertical profiles of stratospheric species that
  control the mid-latitude ozone budget, along with
  dynamical tracers
• Four campaigns conducted at Vanscoy, Saskatchewan
  (52?N, 107?W) during turnaround
• Late August early September in 1998, 2000,
  2002, 2004
• Suite of up to 11 instruments flown on single
  gondola

11
HCN (Historical Data), Carlos Jimenez and Hugh
Pumphrey
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Available Correlative Data
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MLS HCN vs MK IV
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MLS HCN vs ACE
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Summary