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Oxford Retrievals of MIPAS Data

Anu DudhiaUniversity of Oxford

With help from Chiara Piccolo (now UKMO), Claire Waymark, Joanne Walker, Jane Hurley and Luis Millan-Valle

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Nadir v Limb Viewing

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Major Species

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Jul 2002 - Mar 2004: MIPAS operated at full resolution 0.025cm-1 sampling

ESA L2 products widely distributed and validated

MIPAS Data Availability

Jan 2005 - present: operated at 40% reduced resolution 0.0625cm-1 sampling

L1B spectra available, but routine ESA processing will not start until 2008

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Atmospheric Spectrum

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MIPAS Spectrum @0.025cm-1

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MIPAS Spectrum @0.0625cm-1

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MIPAS Operations 2005

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MIPAS Operations 2006

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MIPAS Operations 2007

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Oxford processor MORSE uses same L1B/microwindows as ESA data, but optimal estimation algorithm.

Standard ESA species p,T,H2O,O3,HNO3,CH4,N2O, NO2, plus additional molecules ClONO2, N2O5, CFC-11, CFC-12 and CO

Processed 1 day/month global coverage, preferably NOM mode, for long term trends Since 1st June 2007 process all MIPAS L1B spectra http://www.atm.ox.ac.uk/group/mipas/L2OXF/

Oxford L2 Data

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Long Term Trends

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Temperature

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H2O

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O3

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CH4

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N2O

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HNO3

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NO2

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2007 Antarctic Spring

According to the WMO bulletin

(a) Warmer than usual

(b) Less ozone depletion than usual

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2007 Antarctic Spring

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2007 Antarctic Spring

According to the WMO bulletinAccording MIPAS ..(a) Warmer than usual Similar temperature to past years (at 100mb)(b) Less ozone depletion than usual Similar ozone depletion to past years(c) A lot more NO2 than usual

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CFC-11

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CFC-12

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