Oxford MIPAS meeting#86
16 Nov 05

Present

Oxford: Alastair Burgess, Anu Dudhia, Jane Hurley, Chiara Piccolo, Joanne Walker, Claire Waymark.

Instrument Status [Prev] [Next]

Currently sampling 5 orbits per day from 13Nov to 7Dec.

Some details on the Envisat Web-Site including Instrument Availability web-site
Latest version of Mission Planning Document covering 1 Jan 05 to 7 Dec 05: [.xls] [.html]
Mission_Plan_V4.2.pdf (15JUL05), describing various modes and overall strategy.
Table_4_V4.3.pdf (08OCT05) overall plan until end of 2005.

Bimonthly Report (CP) [Prev] [Next]

The MIPAS Bimonthly report for Jul-Aug 2005 has been released

MIPAS_MR_20050701_20050830.pdf MIPAS BiMonthly Report (Jul/Aug05) (PDF File)

Contains useful summaries of instrument availability and software versions

L1 Data [Prev] [Next]

[BADC Archive of reprocessed L1B Data]

L1B data (as well as L2) should now also be available from ESA ftp site ftp-ops.de.envisat.esa.int

HiRDLS Comparisons (CW) [Prev] [Next]

Comparing HiRDLS retrievals with locally-retrieved MIPAS profiles for 28th January 2005 and 1st March 2005.

HiRDLS Science Team Meeting, Oxford 14/15 Nov 05 covered various intercomaprisons as well as level 1 and level 2 data quality and processing.

Individual retrievals (e.g. water) noisy. However the means show reasonable physical structure.
Looking to get all retrieved species for intercomaprisons, currently missing CFCs, HNO3 and NO2.
AB to take over routine monitoring and comparisons.

N2O5 (JW) [Prev] [Next]

N2O5 is retrieved with fairly poor precision using the standard MIPAS microwindow approach, thought to be due to retrieving both continuum and N2O5 in each microwindow. The use of a single continuum retrieval ('aerosol') instead of a microwindow by microwindow approach has improved the accuracy of the result. Currently trying to quantify this change in error.

Aura Science Team Meeting (Nov 8-10) [Prev] [Next]

Web Page

Agenda (PDF File) distributed 25OCT05

Participants from Oxford MIPAS group:

Chiara Piccolo, comparing MIPAS and TES limb measurements pT, H2O and O3 Presentation
Claire Waymark, comparing MIPAS and HIRDLS Presentation
Joanne Walker, comparing MIPAS and MLS CO measurements Poster

TES (CP) [Prev] [Next]

Selected dedicated microwindows @0.0625cm^-1 resolution and calculated LUTs.

For 28 Jan 05, presented comparison with MIPAS at Aura meeting, above. Significant differences, such as 4-15K temperature and 2ppmv stratospheric water.

Also from CP

Interested in ACE comparisons
Preliminary comparisons show some major differences. This is thought to be attributed to inconsistencies in the processing version and to problems with ODIN pointing.

Spectroscopic Data (JH) [Prev]

Now completed checks comparing radiance calculations for each molecule using v3.1 and v3.2 of the MIPAS spectroscopic databases.

Differences observed for: H2O, NO, HNO3, H2O2, NH3, OCS, SF6 and ClONO2
Main conclusion is that the differences are consistent with the documented changes.
Tech Note (25 Oct 05)

D Band Cloud (JH) [Prev] [Next]

JH now moving on to look at level 2 data. Some profiles show very low water values. It has been suggested that these correlate with chould flagged in the D band but not in the A band.

2RR Microwindows (ie 0.0625cm^-1 resln) (AD) [Prev] [Next]

Now recalculating LUTs and Jacobians for the reduced resolution mode (major bug) and rechecking the microwindows.

MORSE (AD) [Prev] [Next]

Various updates (see MORSE homepage).

Checks for inputs over 80 characters.
New retrieval target: 'aerosol'. Fits a single continuum across all MWs
Helper program generating interpolated Initial Guess now uses a fixed output filename

CO Retrievals (JW) [Prev] [Next]

Work on retrieving CO assuming LTE presented at the Aura Science Team Meeting, mentioned above.

B. Funke (Grenada) has suggested that an O3 non-LTE effect may influence the CO retrieval.

Comparing MLS and CO showed good agreement in some areas, especially where there was good colocation. MIPAS seems to observe more of the expected winter pole enhanced CO than MLS. Water and pT comparisons were good.

Oxford MIPAS meeting#86 16 Nov 05

Oxford MIPAS meeting#86
16 Nov 05