Long-term Validation of MIPAS products based on …earth.esa.int/workshops/atmos2009/participants/1324/pres...05/02/04 BAU SAOZ + BrO 07/08/06 NIA H2O 10/08/06 NIA SAOZ + BrO 19/08/06

1 | Hermann Oelhaf | IMK-ASF | Atm. Science Conference, Barcelona, 7-11 Sept. 09

KIT – die Kooperation vonForschungszentrum Karlsruhe GmbHund Universität Karlsruhe (TH)

Long-term Validation of MIPAS products based on balloon

measurements

Hermann OelhafG. Wetzel, A. Kleinert, F. Friedl-Vallon, G. Maucher

Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany

[email protected]

Fabrizio Niro (SERCO Spa) Marco Ridolfi (Universita' di Bologna), Luca Sgheri (CNR-IAC, Firenze)

mailto:[email protected]



Acknowledgments

MIPAS-Envisat data processing: - Fabrizio Niro - SERCO Spa –- Marco Ridolfi Universita' di Bologna, Luca Sgheri, CNR-IAC, Firenze

MIPAS-B Team (past and present): F. Friedl-Vallon, A. Kleinert, A. Lengel, G. Maucher, H. Nordmeyer, A. Olinger, G. Wetzel, G. Zhang, and H. Fischer

Other balloon teams’ PIs: C. Camy-Peyret, V. Catoire, A. Engel, F. Goutail, K. Pfeilsticker, JP. Pommereau, J.-B. Renard, C. Schiller, F. Stroh

Meteo support & trajectory calculations: FUB (K. Grunow)

ESA: T. Fehr, R. Kopman, P. Lecomte, H. Nett, J. Langen, P. Wursteisen

Balloon operations and base support: CNES, SSC, INPE

Funding: ESA, National funding agencies (F: CNES + others, D: German Space Agency) , EC



• MIPAS-Envisat: operation, sampling & products• Need for long-term validation of MIPAS-Envisat• Important issues in quantitative validation • The role of stratospheric balloons for validation • Validation Results

• Recent results from MIPAS-E Phase 1 (2002 – 2004)• First results from recent balloon campaigns in 2005-2009

(MIPAS-E Phase 2)• Summary and outlook

Outline



Instrument (MIPAS-E)

• Limb emission FTS• Day & night• Pole to pole• Regular pattern• Along track & cross track• Various measurement modes• Nominal mode predominantly used

Operation & Sampling

Mar. – Aug. 2002: commissioning phase

Sept. 02 – Feb. 04: ~ 80 profiles/orbit, (Op. phase 1) > 1000 profiles/day

2004: data gaps due to techn. problems

From Feb. 2005: ~ 120 orbits/day at (Op. phase 2) reduced spectral but

enhanced spatial resolution; increasing duty cycle increasing with time, back to 100% duty cycle since Dec. 2007

MIPAS-Envisat: instrument & operations



MIPAS-Envisat: data sources & products

Instrument ESA: Oper. Proc. Research Institutes

MIPAS-E profiles: p, T; IMK scientific processor: > 30 O3, H2O, CH4, N2O, parameters (dedicated studies)HNO3, NO2 IAA Granada: high altitude products

Univ. Oxford, Univ. Bologna, Univ. Leicester

Different processors with respect to L1 and L2 for Operational Phase 1 (March02 – Feb. 04) and Op. Phase 2 (2005 ff)

Presentation addresses only ESA products



Need for long-term validation of MIPAS-E

• Different operation modes (2002-2004 vs. 2005 ff)• Different Processors

• Need for proving long term stability for trend studies• Data gaps in 2004

• Methods:– Internal data consistency tests– Ground-based observations– Sat-sat comparisons– Balloon borne observations



• Atmospheric variability (dynamics)• Lifetime of target species (photochemistry)

Selection of suitable site and seasonChoose of coincidence criteria in time and spacePhotochemistry correction for short-lived species

• Satellite instrument peculiarities• Sampling problem (vertical/horizontal resolution, profiles vs.

Columns, statistics)• Data representation (altitude, pressure)• Error characterization

Important issues in quantitative validation



MIPAS-Envisat: HNO3 Cross-sections along orbit 2915

Courtesy: Michael Höpfner for IMK-AME Team

Processed with IMK Processor



MIPAS-Balloon: Diurnal variation of NO2

MIPAS-B_F13 Sunrise sequences

Wiegner et al., ACP, 2009



Large balloons as vehicle for sophisticated instruments: power and limitations



• AMON (star occultation, LPC2E/France)• ELHYSA (in situ, frostpoint hygrometer, LPC2E/France)• LPMA/DOAS (sun occultation, LPMAA/France+ IUP/Germany)• MIPAS-B (limb emission, FZK/Germany)• SALOMON (moon occultation, LPC2E/France)• SAOZ (UV-/vis spectromter, CNRS/SA, Paris) • SPIRALE (in situ, TDLs, LPC2E/France)• TRIPLE/TWIN (in situ instruments, FZJ Jülich, Univ.

Frankfurt/Germany, Univ. Reims/France)• STAC (in situ, particle counter, LPC2E/France)

European (large) balloon instruments involved in Envisat validation

Ref.: Neil Harris and Hermann Oelhaf, THE FUTURE FOR RESEARCH BALLOONS IN EUROPE,. Proc. ESA-PAC Conf., Bad Reichenhall, 2009 Harris N.R.P, H. Oelhaf, J.P.Pommereau, J.P. Duvel, F. Vial, The future for research balloon in Europe, a strategy prepared for CNES by the Atmospheric Research Community in Europe, pp 30, Proc. CNES Balloons workshop, Pau, Sept 2008



Example: SAOZ flights used for ENVISAT validation

High latitudeKiruna

16/03/03 KRN SAOZ + BrO30/03/03 KRN SAOZ + BrO

Short duration small ZL ballons: 15 flightsInstruments : SAOZ : O3, NO2 daytime + SR or SSSAOZ BrO: UV extended version, daytime BrOSAOZ H2O: NIR extended version, O3, NO2, H2O, daytime + SR or SS

Mid-Latitude Aire sur l’Adour and Vanscoy

01/10/02 ASA SAOZ,+ BrO04/10/02 ASA SAOZ + H2O09/06/04 ASA SAOZ 24/08/04 VAN BrO07/05/05 ASA SAOZ + BrO07/10/05 ASA SAOZ + BrO

Tropics Bauru and Niamey

18/02/03 BAU SAOZ + H2O23/02/03 BAU SAOZ+ BrO31/01/04 BAU SAOZ + BrO05/02/04 BAU SAOZ + BrO07/08/06 NIA H2O10/08/06 NIA SAOZ + BrO19/08/06 NIA SAOZ + BrO

MIR Long duration flights at the tropicsSR and SS

23/02/2003 BAU 10 days SAOZ O3, NO2, clouds26/02/2004 BAU 39 days SAOZ O3, NO2, H2O, clouds



SAOZ-MIR, SAGE, HALOE, MIPAS, GOMOS, SCIA and AIRS water vapour profiles in the (sub)tropics during HIBISCUS

Montoux et al. ACP 2009

HIBISCUS campaign February–March 2004. Data collected at 10 - 30°S



Balloon campaigns with European (large) payloads dedicated to/useful for Envisat validation (2002-2009)

Period Launch site Payload(s) Geophysical Situation Sept./Oct. 2002 Aire s/l Adour/F MIPAS-B, TRIPLE,

SALOMON Mid-latitudes fall turnaround

Jan. - March 2003 Kiruna/Sweden AMON, MIPAS-B, LPMA/DOAS SPIRALE, TRIPLE

Arctic winter/spring

June/July 2003 Kiruna/Sweden MIPAS-B, TRIPLE Arctic summer Oct. 2003 Aire s/l Adour/F LPMA/DOAS Mid-latitudes fall March 2004 Kiruna/Sweden LPMA/DOAS

MicroRADIBAL ELHYSA STAC


June 2004 Are s/l Adour/F SALOMON STAC

Mid-latitudes summer

June 2005 Teresina/Brazil MIPAS-B, BONBON, SPRALE, LPMA/DOAS

Inner tropics

January 2006 Kiruna/S SALOMON SPIRALE/STAC

Arctic winter

October 2006 Aire s/l Adour/F CLAIRE Mid-latitude fall June 2008 Teresina/Brazil MIPAS-B, TWIN,

SPRALE/STAC, LPMA/DOAS

Inner tropics

March 2009 Kiruna/Sweden MIPAS-B, TWIN Arctic winter/spring August/Sept. 2009 Kiruna/Sweden SPIRALE (2x), STAC

ELHYSA SALOMON MicroRABIDAL LPMA/DOAS (tbc)

Arctic summer

Phase 1

Phase 2



Long-term validation

Obstacles

– MIPAS-Envisat Level2 data not yet available

• Validation data set defined• Very limited processing with prototype processor

– Little/no funding for experimental groups to do validation work

– Most balloon campaigns after 2004 funded from other sources (not dedicated to validation), 2010 ff very uncertain

– Validation often considered as ‘dirty’ work

– Limited number of balloon measurements hinders good statistics

- Very careful check of atmospheric noise mandatory- Trajectory mapping for increasing statistics



Recent validation examples

MIPAS-E data processing for limited validation data set (MIPAS-E Phase 2)

– L0-L1 processing (Fabrizio Niro):some updates with respect to the current operational processor (that will be part of the coming IPF 5.00)

- truncation of the IGM at 8cm in order to avoid under-sampling - implementation of a patch in the AUX files in order to correct for a bug in the calculation of the

engineering tangent heights

- L1-L2 processing (Marco Ridolfi): ORM (Optimized Retrieval Model): the scientific prototype of the ESA routine Level 2 processor for MIPAS measurements.two different setups of the ORM processor:

- val02_001: reference ESA settings of the OFL processor (in this run the ORM setup matches the setup of the ESA L2 processor V5 as it will be resumed in the coming months)

- val02_002: differences wrt test 001 are:- Cloud Index threshold = 4 (instead if 1.8)- Improved convergence criteria: additional conditions are checked- Stronger regularization scheme: (Variable Strength (VS) method of Ridolfi and Sgheri, 2009, instead of the Error Consistency (EC) method of Ceccherini, 2005 currently implemented in the ESA L2 baseline. )- retrieval at all tangent points if OM defined (instead of retrieval at alternate tg points for some CH4 and N2O below 27 km).

V5_exp



Balloon campaigns with European payloads dedicated to/useful for Envisat validation

Period Launch site Payload(s) Geophysical Situation Sept./Oct. 2002 Aire s/l Adour/F MIPAS-B, TRIPLE,

SALOMON Mid-latitudes fall turnaround

Jan. - March 2003 Kiruna/Sweden AMON, MIPAS-B, LPMA/DOAS SPIRALE, TRIPLE


June/July 2003 Kiruna/Sweden MIPAS-B, TRIPLE Arctic summer Oct. 2003 Aire s/l Adour/F LPMA/DOAS Mid-latitudes fall March 2004 Kiruna/Sweden LPMA/DOAS

MicroRADIBAL ELHYSA STAC


June 2004 Are s/l Adour/F SALOMON STAC

Mid-latitudes summer

June 2005 Teresina/Brazil MIPAS-B, BONBON, SPRALE, LPMA/DOAS

Inner tropics

January 2006 Kiruna/S SALOMON SPIRALE/STAC

Arctic winter

October 2006 Aire s/l Adour/F CLAIRE Mid-latitude fall June 2008 Teresina/Brazil MIPAS-B, TWIN,

SPRALE/STAC, LPMA/DOAS

Inner tropics

March 2009 Kiruna/Sweden MIPAS-B, TWIN Arctic winter/spring August/Sept. 2009 Kiruna/Sweden SPIRALE (2x), STAC

ELHYSA SALOMON MicroRABIDAL LPMA/DOAS (tbc)

Arctic summer



The MIPAS-B instrument

• Michelson Interferometer for Passive Atmospheric Sounding• Balloon-borne, superior sensitivity and radiometric accuracy• Limb-emission, cryogenic FTS• sophisticated pointing system (elevation & azimuth)• Flexible and adaptive operation• High spectral resolution (0.035 cm-1)• Broad-band Mid-IR (700-2400 cm-1)• lHe-cooled BLIP detectors



10

15

20

25

30

35

40

45

0 1 2 3 4 5 6 7 8 9 1010

15

20

25

30

35

40

450 1 2 3 4 5 6 7 8 9 10

HNO3 Volume Mixing Ratio (ppbv)

Altit

ude

(km

)

Aire: 24 September 2002 MIPAS-B-HNO3 (ppbv)

5 10 15 20 25 30 35 40 45

5

10

15

20

25

30

35

40

45

8,0 13,0 18,0 23,0 28,0 33,0 38,0 47,5 70,0

8,0 km

13,0 km

18,0 km

23,0 km

28,0 km

33,0 km

38,0 km

47,5 km

70,0 km

Altitude (km)

F=10.0

Levels (Delta Peak)

Leve

ls

HNO3

Retrievals:• KOPRA-INV (IMK-AME)• retrieval grid: 1 km• measurement grid: 1.5 km• MIPAS-B proven µWs• params s.o.f.: T,VMRs, dν, dL• Philipps-Tikhonov regularisation• # degrees of freedom: 7-15

Instrument characterisation:• NESR • ILS • FOV• LOS

0,0

20,0

40,0

60,0

80,0

400 500-7,5-5,0-2,50,02,55,0

MIPAS-B2, Sep. 24, 2002, N3-V.1, 7 NO2 MWs, 15 Alt.

Measured Calculated

Rad

ianc

e (W

/(cm

2 s

r cm

-1))

x10-9

Res

idua

l x10

-9

Grid Points

MIPAS NESR0

(High Resolution Calibrated Spectrum)

1.0E-09

1.0E-08

1.0E-07

500 700 900 1100 1300 1500 1700 1900 2100 2300 2500Wavenumber (cm-1)

NES

R (W

cm

-2 s

r-1 c

m)

In-Flight (223K)RequirementOn-Ground (231K)

1603 1604 1605 1606 1607

0

20

40

60

80

100

120

140

160

180

Wavenumber (cm-1)

600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 18001

10

100

NESR (apodisiert) eines Einzelspektrums, bestimmt aus der Varianz von BB-Spektren

B D F BB4NESRB BB4NESRD BB4NESRF

SD

(BB

-Spe

ktre

n) [n

W /

cm2 s

r cm

-1]

W ellenzahl [cm -1]

NO2 window

NESR MIPAS-BNESR MIPAS

Best fit in NO2 window

Result

MIPAS-B2: Data quality and Retrieval Technique



-52 -50 -48 -46 -44 -42 -40 -38 -36 -34 -32 -30-20

-18

-16

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-12

-10

-8

-6

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0

2

4

6

8

-52 -50 -48 -46 -44 -42 -40 -38 -36 -34 -32 -30

-20

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0

2

4

6

8

01:08 UT

01:04 UT

01:07 UT

01:06 UT

01:05 UT

04:53 UT

02

Teresina, 14 June 2005, GOES-12-Sat. 7:00 UT MIPAS-B MIPAS-E, Orbit 17191

La

titud

e (°

N)

Longitude (°E)

4.0006.0008.00010.0012.0014.0016.0018.0020.0022.0024.0026.0028.0030.0032.0034.0036.0038.00

01

05:35 UT

Tropics: 0° to 11°S

Tropics 2005: Comparisons to new op. mode measurements: MIPAS-B vs. MIPAS-E



10

100

190 200 210 220 230 240 250 260

10

100

190 200 210 220 230 240 250 260 -4 -2 0 2 4

100

10

-4 -2 0 2 4

Teresina, 14 June 2005, Fl. 15, Seq. 1

Distance at 30 km (~ 12 hPa): 106 km, 348 km, 490 km MIPAS-B: 14 June 2005, 04:53 UT, 9.4°S, 41.4°W MIPAS-E: 14 June 2005, 01:05 UT, 9.8°S, 41.9°W MIPAS-E: 14 June 2005, 01:06 UT, 6.2°S, 42.8°W MIPAS-E: 14 June 2005, 01:04 UT, 13.4°S, 41.1°W

Temperature (K)

Pre

ssur

e (h

Pa) mean diff.:

-0.6 ± 0.3 K-0.4 ± 0.2 K-0.8 ± 0.4 K

MIPAS-E - MIPAS-B Diff. Comb. Prec. Err. Comb. Total Err.

Diff./Err. (K)

Temperature

temperature looks good, tropopausewell hit, no obvious biases, differenceswithin expected errors

Tropics 2005: Comparisons to new op. mode measurements: MIPAS-B vs. MIPAS-E



10

100

0.0 0.5 1.0 1.5 2.0 2.5 3.0

10

100

0.0 0.5 1.0 1.5 2.0 2.5 3.0

CH4 Volume Mixing Ratio (ppmv)

Pre

ssur

e (h

Pa)

Teresina, 14 June 2005, Fl. 15, Seq. 1 MIPAS-B: 14 June 2005, 04:53 UT, 9.4°S, 41.4°W MIPAS-E: 14 June 2005, 01:04 UT, 13.4°S, 41.1°W, ML2PP/4.0 MIPAS-E: 14 June 2005, 01:05 UT, 9.8°S, 41.9°W, ML2PP/4.0 MIPAS-E: 14 June 2005, 01:06 UT, 6.2°S, 42.8°W, ML2PP/4.0

CH4

Tropics 2005: Adjacent scans with different Processor versions vs. MIPAS-B



10

100

0.0 0.5 1.0 1.5 2.0 2.5 3.0

10

100

0.0 0.5 1.0 1.5 2.0 2.5 3.0


Pre

ssur

e (h

Pa)

Teresina, 14 June 2005, Fl. 15, Seq. 1 MIPAS-B: 14 June 2005, 04:53 UT, 9.4°S, 41.4°W MIPAS-E: 14 June 2005, 01:04 UT, 13.4°S, 41.1°W, ML2PP/4.0 MIPAS-E: 14 June 2005, 01:05 UT, 9.8°S, 41.9°W, ML2PP/4.0 MIPAS-E: 14 June 2005, 01:06 UT, 6.2°S, 42.8°W, ML2PP/4.0 MIPAS-E: 14 June 2005, 01:04 UT, 13.4°S, 41.1°W, val02_001 MIPAS-E: 14 June 2005, 01:05 UT, 9.8°S, 41.9°W, val02_001 MIPAS-E: 14 June 2005, 01:06 UT, 6.2°S, 42.8°W, val02_001

CH4




10

100

0.0 0.5 1.0 1.5 2.0 2.5 3.0

10

100

0.0 0.5 1.0 1.5 2.0 2.5 3.0


Pre

ssur

e (h

Pa)

Teresina, 14 June 2005, Fl. 15, Seq. 1 MIPAS-B: 14 June 2005, 04:53 UT, 9.4°S, 41.4°W MIPAS-E: 14 June 2005, 01:04 UT, 13.4°S, 41.1°W, ML2PP/4.0 MIPAS-E: 14 June 2005, 01:05 UT, 9.8°S, 41.9°W, ML2PP/4.0 MIPAS-E: 14 June 2005, 01:06 UT, 6.2°S, 42.8°W, ML2PP/4.0 MIPAS-E: 14 June 2005, 01:04 UT, 13.4°S, 41.1°W, val02_001 MIPAS-E: 14 June 2005, 01:05 UT, 9.8°S, 41.9°W, val02_001 MIPAS-E: 14 June 2005, 01:06 UT, 6.2°S, 42.8°W, val02_001 MIPAS-E: 14 June 2005, 01:04 UT, 13.4°S, 41.1°W, val02_002 MIPAS-E: 14 June 2005, 01:05 UT, 9.8°S, 41.9°W, val02_002 MIPAS-E: 14 June 2005, 01:06 UT, 6.2°S, 42.8°W, val02_002

CH4


V5_exp



10

100

0.0 0.5 1.0 1.5 2.0 2.5

10

100

0.0 0.5 1.0 1.5 2.0 2.5 -1.0 -0.5 0.0 0.5 1.0

100

10

-1.0 -0.5 0.0 0.5 1.0

-40 -20 0 20 40

100

10

-40 -20 0 20 40

Teresina, 14 June 2005, Fl. 15, Seq. 1

Distance at 30 km (~ 12 hPa): 106 km MIPAS-B: 14 June 2005, 04:53 UT, 9.4°S, 41.4°W MIPAS-E: 14 June 2005, 01:05 UT, 9.8°S, 41.9°W, ML2PP/4.0 MIPAS-E: 14 June 2005, 01:05 UT, 9.8°S, 41.9°W, val02_001 MIPAS-E: 14 June 2005, 01:05 UT, 9.8°S, 41.9°W, val02_002


Pre

ssur

e (h

Pa)

mean diff.:0.02 ± 0.05 ppmv0.06 ± 0.02 ppmv0.09 ± 0.02 ppmv


Diff./Err. (ppmv)

mean diff.:3.5 ± 2.9 %5.3 ± 1.9 %7.6 ± 1.6 %

Diff./Err. (%)

Tropics 2005: Latest results, MIPAS-B vs. MIPAS-E

CH4



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07b

07a

06c

04a

06a

04d04c

04b05b

01:14 UTC

01:10 UTC

01:13 UTC

01:12 UTC

01:11 UTC

03e

03d

03b03c

Teresina, 06 June 2008 MIPAS-B tangent points MIPAS-E, Orbit 32765

La

titud

e (°

N)

Longitude (°E)

210.0

216.0

217.0

218.0

219.0

220.0

221.0

222.0

223.0

03a

03:49 UTC

ECMWF 080606 06 UTC30 hPa Temp (K)(~24 km)

Tropics 2008: MIPAS-B vs. MIPAS-E scans



10

100

190 200 210 220 230 240 250 260

10

100

190 200 210 220 230 240 250 260 -4 -2 0 2 4

100

10

-4 -2 0 2 4

Teresina, 6 June 2008, Fl. 16, Seq. 3d,val02_001

Distance at 30 km (~ 12 hPa): 237 km, 280 km MIPAS-B: 06 June 2008, 03:49 UT, 8.3°S, 42.5°W MIPAS-E: 06 June 2008, 01:11 UT, 9.5°S, 43.4°W MIPAS-E: 06 June 2008, 01:12 UT, 5.1°S, 42.0°W

Temperature (K)

Pre

ssur

e (h

Pa)

mean diff.:1.2 ± 0.3 K0.7 ± 0.4 K


Diff./Err. (K)

Tropics 2008: Latest results, MIPAS-B vs.MIPAS-E

Temperature



10

100

190 200 210 220 230 240 250 260

10

100

190 200 210 220 230 240 250 260 -4 -2 0 2 4

100

10

-4 -2 0 2 4



Temperature (K)

Pre

ssur

e (h

Pa)

mean diff.:1.3 ± 0.4 K0.3 ± 0.4 K


Diff./Err. (K)

Temperature


V5_exp



10

100

190 200 210 220 230 240 250 260

10

100

190 200 210 220 230 240 250 260 -4 -2 0 2 4

100

10

-4 -2 0 2 4


Distance at 30 km (~ 12 hPa): 237 km, 280 km ECMWF: 06 June 2008, 03:49 UT, 8.3°S, 42.5°W MIPAS-B: 06 June 2008, 03:49 UT, 8.3°S, 42.5°W MIPAS-E: 06 June 2008, 01:11 UT, 9.5°S, 43.4°W MIPAS-E: 06 June 2008, 01:12 UT, 5.1°S, 42.0°W

Temperature (K)

Pre

ssur

e (h

Pa)

mean diff.:1.2 ± 0.3 K0.7 ± 0.4 K


Diff./Err. (K)

Temperature




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100

0 2 4 6 8 10 12 14

10

100

0 2 4 6 8 10 12 14 -2 -1 0 1 2

100

10

-2 -1 0 1 2

-60 -40 -20 0 20 40 60

100

10

-60 -40 -20 0 20 40 60



O3 Volume Mixing Ratio (ppmv)

Pre

ssur

e (h

Pa)

mean diff.:-0.10 ± 0.09 ppmv0.15 ± 0.11 ppmv


Diff./Err. (ppmv)

mean diff.:6.2 ± 7.0 %-0.9 ± 5.9 %

Diff./Err. (%)


O3



10

100

0 2 4 6 8 10 12 14

10

100

0 2 4 6 8 10 12 14 -2 -1 0 1 2

100

10

-2 -1 0 1 2

-60 -40 -20 0 20 40 60

100

10

-60 -40 -20 0 20 40 60




Pre

ssur

e (h

Pa)

mean diff.:0.14 ± 0.07 ppmv0.46 ± 0.14 ppmv


Diff./Err. (ppmv)

mean diff.:13.4 ± 9.1 %-0.1 ± 5.2 %

Diff./Err. (%)

O3


V5_exp



10

100

0 5 10 15 20

10

100

0 5 10 15 20 -4 -2 0 2 4

100

10

-4 -2 0 2 4

-40 -20 0 20 40

100

10

-40 -20 0 20 40


Distance at 30 km (~ 12 hPa): 237 km, 280 km MIPAS-B: 06 June 2008, 03:49 UT, 8.3°S, 42.5°W MIPAS-E: 06 June 2008, 01:11 UT, 9.5°S, 43.4°W MIPAS-E: Photochemically corrrected MIPAS-E: 06 June 2008, 01:12 UT, 5.1°S, 42.0°W MIPAS-E: Photochemically corrrected

NO2 Volume Mixing Ratio (ppbv)

Pre

ssur

e (h

Pa)

mean diff.:1.26 ± 0.43 ppbv0.67 ± 0.26 ppbv


Diff./Err. (ppbv)

mean diff.:14.4 ± 5.1 %7.2 ± 2.9 %

Diff./Err. (%)


NO2



10

100

0 5 10 15 20

10

100

0 5 10 15 20 -4 -2 0 2 4

100

10

-4 -2 0 2 4

-40 -20 0 20 40

100

10

-40 -20 0 20 40


Distance at 30 km (~ 12 hPa): 237 km, 280 km MIPAS-B: 06 June 2008, 03:49 UT, 8.3°S, 42.5°W MIPAS-E: 06 June 2008, 01:11 UT, 9.5°S, 43.4°W MIPAS-E: Photochemically corrrected MIPAS-E: 06 June 2008, 01:12 UT, 5.1°S, 42.0°W MIPAS-E: Photochemically corrrected

NO2 Volume Mixing Ratio (ppbv)

Pre

ssur

e (h

Pa)

mean diff.:1.73 ± 0.61 ppbv0.88 ± 0.20 ppbv


Diff./Err. (ppbv)

mean diff.:19.2 ± 6.4 %10.2 ± 2.3 %

Diff./Err. (%)

NO2


V5_exp



10

100

0 2 4 6 8 10 12 14 16 18 20

10

100

0 2 4 6 8 10 12 14 16 18 20 -3 -2 -1 0 1 2 3

100

10

-3 -2 -1 0 1 2 3

-60 -40 -20 0 20 40 60

100

10

-60 -40 -20 0 20 40 60



H2O Volume Mixing Ratio (ppmv)

Pre

ssur

e (h

Pa)



Diff./Err. (ppmv)

mean diff.:7.8 ± 4.1 %26.8 ± 16.9 %

Diff./Err. (%)

H2O




10

100

0 2 4 6 8 10 12 14 16 18 20

10

100

0 2 4 6 8 10 12 14 16 18 20 -3 -2 -1 0 1 2 3

100

10

-3 -2 -1 0 1 2 3

-60 -40 -20 0 20 40 60

100

10

-60 -40 -20 0 20 40 60



H2O Volume Mixing Ratio (ppmv)

Pre

ssur

e (h

Pa)



Diff./Err. (ppmv)

mean diff.:15.7 ± 5.1 %13.1 ± 1.8 %

Diff./Err. (%)

H2O


V5_exp



10

100

0 2 4 6 8 10 12 14

10

100

0 2 4 6 8 10 12 14

H = [H2O]+2[CH4] Volume Mixing Ratio (ppmv)

Pre

ssur

e (h

Pa)

Teresina, June 6, 2008, Seq. 03d: MIPAS-B: 06 June 2008, 03:49 UT, 8.3°S, 42.5°W MIPAS-E: 06 June 2008, 01:11/01:12 UT, val02_001 MIPAS-E: 06 June 2008, 01:11/01:12 UT, val02_002

Stratospheric in-situmeasurements:

Arctic winter 1991/1992 (Engel et al., 1996) Arctic winter 1999/2000 (Herman et al., 2002)

Water budget




0 10 20 30 40 5055

60

65

70

75

80

850 10 20 30 40 50

55

60

65

70

75

80

85

07:44 UTC

09a

08

03a

0201

206.0

208.8

211.5

214.3

217.0

Latit

ude

(°N

)

Longitude (°E)

ECMWF 090311 06 UTC50 hPa (~ 20 km) Temperature (K)

MIPAS-B tangent points MIPAS-E, Orbit 36748

07:47 UTC

07:48 UTC

07:49 UTC

07:50 UTC

07:51 UTC

07:52 UTC

Arctic 2009: MIPAS-B vs. MIPAS-E scans



10

100

0 1 2 3 4 5 6 7 8 9 10 11 12

10

100

0 1 2 3 4 5 6 7 8 9 10 11 12 -2 -1 0 1 2

100

10

-2 -1 0 1 2

-40 -20 0 20 40

100

10

-40 -20 0 20 40

Kiruna, 11 March 2009, Fl. 17, Seq. 9a,val02_001

Distance at 20 km (~ 53 hPa): 187 km, 248 km MIPAS-B: 11 March 2009, 07:44 UT, 67.0°N, 33.7°E MIPAS-E: 11 March 2009, 07:49 UT, 68.8°N, 37.4°E MIPAS-E: 11 March 2009, 07:50 UT, 65.2°N, 36.2°E


Pre

ssur

e (h

Pa)



Diff./Err. (ppmv)

mean diff.:6.4 ± 3.8 %7.7 ± 3.4 %

Diff./Err. (%)

Arctic 2009: Latest results, MIPAS-B vs.MIPAS-E

O3



10

100

0 1 2 3 4 5 6 7 8 9 10 11 12

10

100

0 1 2 3 4 5 6 7 8 9 10 11 12 -2 -1 0 1 2

100

10

-2 -1 0 1 2

-40 -20 0 20 40

100

10

-40 -20 0 20 40

Kiruna, 11 March 2009, Fl. 17, Seq. 9a,val02_002

Distance at 20 km (~ 53 hPa): 187 km, 248 km MIPAS-B: 11 March 2009, 07:44 UT, 67.0°N, 33.7°E MIPAS-E: 11 March 2009, 07:49 UT, 68.8°N, 37.4°E MIPAS-E: 11 March 2009, 07:50 UT, 65.2°N, 36.2°E


Pre

ssur

e (h

Pa)



Diff./Err. (ppmv)

mean diff.:10.5 ± 3.3 %8.4 ± 3.3 %

Diff./Err. (%)

Arctic 2009: Latest results, MIPAS-B vs.MIPAS-E

O3

V5_exp



• Validation suffers from non-availability of operational L2 data• Agreement generally within the total combined error• No obvious inconsistencies between MIPAS-Phase 1 and MIPAS

Phase 2 data. Positive biases seem to persist in N2O, CH4, H2O (upper strat.)

• New processor version and particularly V5-exp seems to improve N2O, H2O, and N2O retrievals, but regularization perhaps too strong.

• Stronger cloud threshold seems to improve retrievals in lowermost stratosphere/upper troposphere (at the expense of data coverage)

Conclusions (preliminary)



To do list

• Finishing balloon data analysis of past flights useful for validation• Find people and money to do the validation job for all coincident

observations and trajectory matches• Prove consistency of MIPAS Phase-1 data to MIPAS Phase-2 data

H2O

T

NO2

HNO3O3CH4

N2O others

Help !!

Documents

Long-term Validation of MIPAS products based on …earth.esa.int/workshops/atmos2009/participants/1324/pres...05/02/04 BAU SAOZ + BrO 07/08/06 NIA H2O 10/08/06 NIA SAOZ + BrO 19/08/06