Oxford MIPAS meeting#87
06 Dec 05

Present

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

Instrument Status [Prev] [Next]

The self-healing resulting from lower workload appears less effective. The latest mission planning in light of this is below.

• Some details on the Envisat Web-Site including Instrument Availability web-site
• Latest version of Mission Planning Document covering 1 Jan 05 to 21 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.

Science Team Meeting, IMK (AD) [Prev] [Next]

Looked at many instrumental and scientific issues.

• IDU drive errors seem much more common at the equator. Why?
• Please report to ESA (Fehr) all files that you find that are duplicates (same processor version and sensing time, different filesize)
• Standard filenames demystified PO-RS-MDA-GS-2009
• The minutes are available [Here].

Validation Team Meeting, IMK (CP,VP) [Prev]

Looked at validation issues.

• NO2 problems in the operational retrieval. Occasional large values. Some low altitude instabilities.
• Some oscillatory problems in N2O and CH4. CP looking for Odin correlative measurements.

L2 Data (AB,CP) [Prev] [Next]

Updated L2 version and coverage maps [Link]. Now look at OFFLINE data.

Reported that 24Sep02 220750 (v4.62) temperature profile is 3K worse than the previous processor version(v4.61).

L1 Data [Prev] [Next]

9DEC05 - Plans to activate processor v4.65. This will create L1B reduced resolution data operationally.

HiRDLS Comparisons (CW) [Prev] [Next]

Running the RFM to simulate the HIRDLS channels, using a retrieved mipas profile. (covers regions of the spectrum not observed by MIPAS).

Looking at Jan 2005 MIPAS nitric acid measurements, for validation.

N2O5 (JW) [Prev] [Next]

The single continuum approach is an improvement. Still after quantitative comparisons.

TES (CW) [Prev] [Next]

Adding the retrieval of pressure to nadir measurements.

Anomalous VMRs [topic was D Band Cloud, Prev] [Next](JH)

Some profiles show very low (1e-10) water or ozone values. These are put in when the retrieval oscillates and goes negative. The remainder of the profile should be usable. These values do not correlate with geolocation. No correlation with D and not A band cloud detection (PSCs). No diurnal correlation. Will look at L2 quality flag and match L2 to L1B points.

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

Re-selecting MWs after Jacobian bug.

CO Retrievals (JW) [Prev] [Next]

Looking at the averaging kernels. Comparing the differing a priori conditions (value, uncertainty).

Some evidence of observing CO descent at the winter pole.

SF6 Retrievals (AB) [Prev] [Next]

Submitted paper to GRL for review on SF6 Zonal means / seasonal variability.

ABB Dec05