E.Papandrea PM4 - Esrin, 5 th Nov 2004 DFCI Page 1 Topics 1.MWs Joint Retrieval of pT, H 2 O, O 3 without CO2MIX as a source of systematic error; MWs Joint.

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Presentation transcript:

E.Papandrea PM4 - Esrin, 5 th Nov 2004 DFCI Page 1 Topics 1.MWs Joint Retrieval of pT, H 2 O, O 3 without CO2MIX as a source of systematic error; MWs Joint Retrieval of pT, H 2 O, O 3, CO 2 to improve p and CO 2 sensitivity (pT, CO 2 not good as their features are not well separated). 2.Minor species: H 2 O 2 retrieval as an example of specie not yet retrieved.

E.Papandrea PM4 - Esrin, 5 th Nov 2004 DFCI Page 2 PT, H 2 O, O 3 Spectral Range: 685 – 825 cm -1 Q – branches of CO 2 CO 2 line – mixing model has been integrated in the MTR code, these MWs have been sel. to test it

E.Papandrea PM4 - Esrin, 5 th Nov 2004 DFCI Page 3

E.Papandrea PM4 - Esrin, 5 th Nov 2004 DFCI Page 4 PT, H 2 O, O 3, CO 2 Spectral Range: all bands

E.Papandrea PM4 - Esrin, 5 th Nov 2004 DFCI Page 5 We are looking if it is possible to improve CO 2 accuracy.

E.Papandrea PM4 - Esrin, 5 th Nov 2004 DFCI Page 6 H2O2H2O2 OH + O 3 HO 2 + O 2 HO 2 + HO 2 H 2 O 2 + O 2 H 2 O 2 is important as a sink of OH which plays an important role in atmosphere chemistry (OH reacts with CO and CH 4 ) Lifetime OH about 10 seconds Lifetime H 2 O 2 about 1 day H 2 O 2 is created by O 3 Short lifetime

E.Papandrea PM4 - Esrin, 5 th Nov 2004 DFCI Page 7 H 2 O 2 Spectral Range: Band B

E.Papandrea PM4 - Esrin, 5 th Nov 2004 DFCI Page 8 Retrieval can be performed in troposphere – stratosphere regions but not in mesosphere

E.Papandrea PM4 - Esrin, 5 th Nov 2004 DFCI Page 9 Example of a real H 2 O 2 retrieval Blue and red colors = good retrieval ORBIT JUL 2002 No data scan 0, 58,59 Max at 10 mb in eq. regions PSC in south pole

E.Papandrea PM4 - Esrin, 5 th Nov 2004 DFCI Page 10 ORBIT 2081 (from north pole to south pole, day time) Good agreement retrieved and Slimcat model for the Max at 10 mb in eq. regions and minimum below We don’t see the equatorial peak at 200 mb and Slimcat peak is larger Comparison retrieved - Slimcat

E.Papandrea PM4 - Esrin, 5 th Nov 2004 DFCI Page 11 ORBIT 2081 Where ozone has a peak also H 2 O 2 has a peak and where ozone has a minimum again H 2 O 2 has a minimum

E.Papandrea PM4 - Esrin, 5 th Nov 2004 DFCI Page 12 Conclusions New MWs set for joint retrieval pT H 2 O, O 3 without CO 2 error component (to be tested with geofit + line mixing model). New MWs set for joint retrieval pT H 2 O, O 3, CO 2. H 2 O 2 can be retrieved with MIPAS data.