Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 1

Oxford Work

Update L2 OFL Error Analyses

Comparison of OXF v ESA RR27 L2 data

Long Term Trends in MIPAS data

Anu DudhiaUniversity of Oxford

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 2

Update L2 OFL Error Analysis

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 3

Error analyses derived from microwindow selection are provided on web-page

http://www.atm.ox.ac.uk/group/mipas/err/

Page now updated (8Oct07)Only 2 minor modifications (from QWG12)

SPREAD error (2nd deriv) reduced from 2% to 0.2%GAIN error (0th deriv) reduced from 2% to 1% for C and D bands

L2 Error Analyses

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 4

Old NewH2O Errors

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 5

Comparison of OXF and ESA RR27 Data

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 6

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

Oxford emphasis on long-term trends: processing 1 day/month, global coverage, preferably NOM mode.(also, since June 2007, routinely process all MIPAS NOM/UTLS1/MA mode data

http://www.atm.ox.ac.uk/group/mipas/L2OXF/ ESA emphasis on processing validation data: usually UTLS1 and limited area coverage - ‘orthogonal’ to Oxford requirements

Run MORSE to compare with ESA data from 14Jun05 and 22Jun05 (as shown at QWG13)

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 7

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 8

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 9

ESA O3 17191 (14JUN06)

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 10

OXF O3 17191 (14JUN06)

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 11

OXF-ESA O3 17191 (14JUN06)

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 12

pT Comparisons

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 13

H2O Comparisons

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 14

O3 Comparisons

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 15

HNO3 Comparisons

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 16

CH4 Comparisons

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 17

N2O Comparisons

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 18

NO2 Comparisons

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 19

OXF-ESA Comparisons: Summary

pT: agreement with ± 2K, 5% p

H2O: 40-60km -0.5ppmv, >66km +1ppmv

O3: <30km Oscillations in OXF data, 40-66km -5%

HNO3: <30km Oscill. In OXF data, >30km +10%

CH4: <60km within 5%, >66km +50%

N2O: 30-55km +5%

NO2: 25-55km within 5%, <20km +50%, <60km - 50%

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 20

Long Term Trends

Anu DudhiaUniversity of Oxford

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 21

MIPAS Operations 2005

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 22

MIPAS Operations 2006

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 23

MIPAS Operations 2007

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 24

Temperature

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 25

H2O

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 26

O3

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 27

HNO3

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 28

CH4

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 29

N2O

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 30

NO2

Atmospheric, Oceanic & Planetary Physics,University of Oxford

A DudhiaMIPAS QWG14

Bologna 9-11 Oct 2007Page 31

Species 100mb 10mb 1mb 0.1mb

T 0.1K 0.2K +0.7K +1K

H2O -10% 1% -10%

O3 -3% +5% +3% +0-10%

HNO3 -2% +5-10%

-5%

CH4 2% +5% +0-10%

N2O +5% +5% +0-10%

NO2 +10% +10% 15%

Summary: OXF RR27-FR17