Atmospheric, Oceanic & Planetary Physics, University of Oxford A Dudhia MIPAS QWG12 ESRIN Feb 2007 Page 1 pT Microwindows Anu Dudhia University of Oxford
Atmospheric, Oceanic & Planetary Physics, University of Oxford A Dudhia MIPAS QWG12 ESRIN Feb 2007 Page Microwindows
Atmospheric, Oceanic & Planetary Physics, University of Oxford A Dudhia MIPAS QWG12 ESRIN Feb 2007 Page Microwindows
Atmospheric, Oceanic & Planetary Physics, University of Oxford A Dudhia MIPAS QWG12 ESRIN Feb 2007 Page 4 RR27 pT Microwindows Reduced resolution & lower altitudes need to use CO2 laser band for low altitude retrievals Oversampling low altitudes need many laser band MWs Laser band causes problems with discontinuities and (potentially) non-LTE effects Latest selection (MW# ) uses additional MW at 790cm-1 to give improved tropospheric coverage and reduced reliance on laser band below 21km
Atmospheric, Oceanic & Planetary Physics, University of Oxford A Dudhia MIPAS QWG12 ESRIN Feb 2007 Page 5 AE Mode Dec06 Anu Dudhia University of Oxford
Atmospheric, Oceanic & Planetary Physics, University of Oxford A Dudhia MIPAS QWG12 ESRIN Feb 2007 Page 6 Dec 2006 mixed NOM and AE mode data Single L1B files contain complete orbit (unlike orig May’05) Also: last sweep of last scan of each orbit flagged as corrupt
Atmospheric, Oceanic & Planetary Physics, University of Oxford A Dudhia MIPAS QWG12 ESRIN Feb 2007 Page 7
Atmospheric, Oceanic & Planetary Physics, University of Oxford A Dudhia MIPAS QWG12 ESRIN Feb 2007 Page 8
Atmospheric, Oceanic & Planetary Physics, University of Oxford A Dudhia MIPAS QWG12 ESRIN Feb 2007 Page 9
Atmospheric, Oceanic & Planetary Physics, University of Oxford A Dudhia MIPAS QWG12 ESRIN Feb 2007 Page 10
Atmospheric, Oceanic & Planetary Physics, University of Oxford A Dudhia MIPAS QWG12 ESRIN Feb 2007 Page 11
Atmospheric, Oceanic & Planetary Physics, University of Oxford A Dudhia MIPAS QWG12 ESRIN Feb 2007 Page 12 Dec’06 AE mode data appears to have the same problems as earlier May’05 data: L1B (engineering) altitudes are 2 km lower than given in mission planning document (5,7.5…km instead of 7,8.5…km) L1B altitudes for sideways viewing appear to be approx 4.5km below actual tangent altitudes (based on climatological pressure) L1B altitudes for rearward viewing appear to be approx 0.5km below actual tangent altitudes Conclusions
Atmospheric, Oceanic & Planetary Physics, University of Oxford A Dudhia MIPAS QWG12 ESRIN Feb 2007 Page 13