Page 1Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
INSTRUMENT SpeciesACVT subgroup : N2O MIPAS
Claude Camy-PeyretLaboratoire de Physique Moléculaire et Applications
CNRS/UPMC, France
Validation of N2O profiles with correlative data from ground stations starting at slide 21
and
Validation of N2O profiles with correlative data from:
- Balloon (H. Oelhaf, M. Pirre, C. Camy-Peyret, A. Engel, F. Mencaraglia)
Aircraft (U. Cortesi, C. Blom)
Page 2Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
BalloonH. Oelhaf
Forschungszentrum Karlsruhe/Institut für Meteorologie und Klimaforschung, GermanyA. Engel
Universität Frankfurt/Institut für Meteorologie und Geophysik, GermanyM. Pirre
Laboratoire de Chimie Physique de l’Environnement, Orléans, FranceC. Camy-Peyret
Laboratoire de Physique Moléculaire et Applications, Paris, France
F. MencaragliaInstitute for Applied Physics “Nello Carrara”, IFAC-CNR, Florence, Italy
Page 3Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
IBEX Balloon measurements - N2O
Measurements (8 profiles, 4 hours) taken over mediterranean Mipas data within a +/- 2days window
Page 4Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
N2O: MIPAS-B vs. MIPAS-E
0,1
1
10
100
-100 -50 0 50 100 150 200 250 300 350 400 450
-100 -50 0 50 100 150 200 250 300 350 400 450
Aire: 24 September 2002 Seq. N3 MIPAS-E (E): 24-Sep-2002 22:07:50 V4.61 MIPAS-E : 24-Sep-2002 22:07:50 V4.55 MIPAS-B (B): 24-Sep-2002 22:21:42 Absolute Diff. (B-E) Combined errors
MIPAS-B error bars: 1σ accuracyMIPAS-E error bars: only noise error
Absolute difference (ppbv) N2O(ppbv)
Rec.16 - North
Pres
sure
(hPa
)
MIPAS-B
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
Page 5Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
Cryosampler 24.9.2002 vs ESA Retrieval ver 4.61- trajectory mapping for +/- 5 days: 125 matches with 49 orbits
Page 6Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
MIPAS orbit 2968 (scans 12 -14)
N2O
cryosampler validation 24.9.2002
vs MIPAS ver 4.61
Trajectory Mapping:
red: cryosampler
blue: MIPAS, forw. trajectories
green MIPAS, back trajectories
MIPAS symbol size reflectstrajectory time difference (large symbols are nearer in time)
Page 7Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
cryosampler validation24.9.2002 vs ESA Retrieval ver 4.61 with trajectory
mapping
comparison of CH4 - N2O correlation
unrealisticly high values(above tropospheric values) found for both N2O and CH4
in ver 4.61
red: cryosampler
blue: MIPAS, forw. trajectories
green MIPAS, back trajectories
Page 8Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
SPIRALE/MIPAS_200209
300
400
500
600
700
800
900
1000
0 50 100 150 200 250 300 350 400
N2O(ppb)
Teta
(K)
Black line with 3% error bar: SPIRALE on October 2, 2002(0715-0840UT)MIPAS on trajectories ending at the SPIRALE location:
Circle: MIPAS on September 28, Square: MIPAS on September 27,Diamond: MIPAS on September 26,
Aire sur l’Adour (43 N, 0 E)
Page 9Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
Blue full line: ATMOS correlations at mid-latitudeBlack crosses with 3% error bars: SPIRALE on October 2, 2002
Pink square with 10% error bars: MIPAS
Aire sur l’Adour (43 N, 0 E)corrélations CH4-N2O (Michelsen et al. , GRL, 1 Août 98)
0,000,200,400,600,801,001,201,401,601,802,002,20
0 50 100 150 200 250 300 350 400
N2O (ppb)
CH
4 (p
pm)
Page 10Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
Kiruna 68 N, 20E
Full line with 3% error bars: SPIRALESquare with error bars: MIPAS
SPIRALE/MIPAS 20032101_195233
10
15
20
25
30
35
-50 0 50 100 150 200 250 300 350 400N2O(ppb)
h(km
)
Page 11Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
SPIRALE/MIPAS 20032101
1517192123252729313335
64 66 68 70 72
Latitude
h (k
m) MIPAS_195233
SPIRALEMIPAS195354
SPIRALE/MIPAS 20032101
15
20
25
30
35
20 22 24 26 28 30 32 34 36
Longitude East
h(km
)
SPIRALE/MIPAS 20032101
15
20
25
30
35
21 21,5 22 22,5 23 23,5
local time
h (k
m)
Black full line: SPIRALE, Pink full line MIPAS at 19:52:33 UT
Page 12Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
15
16
1718
19
20
2122
23
24
2526
27
28
2930
31
32
0,00 0,05 0,10 0,15 0,20 0,25 0,30
66.2°N15.9°E16:10 UT
66.8°N23.2°E15:38 UT
LPMA66.2 °N17.8 °E16:01 UT
MIPAS (IMK) :65.7°N 13.4°E21:13 UT
N2O VMR (ppmv)
altit
ude
(km
)N2O: LPMA vs. MIPAS-E
4 March 2003 from Esrange
Page 13Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
U. CortesiInstitute for Applied Physics “Nello Carrara”, IFAC-CNR, Florence, Italy
C. BlomForschungszentrum Karlsruhe/Institut für Meteorologie und limaforschung, Germany
Aircraft
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
Page 14Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004N2O: MIPAS-STR vs. MIPAS-E 22.7.02 Orbit 2051
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
Page 15Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
M-55 Geophysica mid-latitude flights, October 2002MIPAS-ENVISAT N2O validation with SAFIRE-A
Institute for Applied Physics “Nello Carrara”, IFAC-CNR, Florence, Italy
Scan 15 (21:23)
Scan 14 (21:22)
Scan 16 (21:24)
Page 16Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
October 24th, 2002 – ENVISAT orbit 3403, MIPAS scan 15N2O VMR measurements: comparison MIPAS versus SAFIRE-A
Page 17Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
October 24th, 2002 – ENVISAT orbit 3403, MIPAS scan 14N2O VMR measurements: comparison MIPAS versus SAFIRE-A
Page 18Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
M-55 Geophysica flight October 24th, 2002N2O measurements: intercomparison SAFIRE-A versus HAGAR
Page 19Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
Conclusions
Precision : ± 10 % (seems better than for CH4)but
“zigzag” profiles in the lower stratosphereoutliers in the CH4-N2O correlationAccuracyMIPAS may have too high values in the lower stratosphere/upper troposphereComparison with the IMK off-line processor (G. Stiller)smoother profilesbetter agreement
Comparison with MIPAS 4.61 N2O profiles
Page 20Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
Acknowledgements
Thanks to all the providers of material/plates for this presentation
H. Oelhaf, (balloon), G. Stiller (IMK processor), C. Blom (aircraft) Forschungszentrum Karlsruhe/Institut für Meteorologie und Klimaforschung, Germany
A. Engel (balloon)Universität Frankfurt/Institut für Meteorologie und Geophysik, Germany
M. Pirre (balloon)Laboratoire de Chimie Physique de l’Environnement, Orléans, France
C. Camy-Peyret (balloon)Laboratoire de Physique Moléculaire et Applications, Paris, France
U. Cortesi, (aircraft), F. Mencaraglia (balloon)Institute for Applied Physics “Nello Carrara”, IFAC-CNR, Florence, Italy
Sorry for those having correlative data but not having sent them to the designatedpresenter
Page 21Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
INSTRUMENT SpeciesACVT subgroup: N2O MIPAS
Claude Camy-PeyretLaboratoire de Physique Moléculaire et Applications
CNRS/UPMC, France
Validation of N2O profiles with correlative data from ground stations
Ground based FTIR (Th. Blumenstock, M. De Mazière)
Page 22Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
100
10
1
0,0 0,1 0,2 0,3 0,4 0,5-0,04 0,00 0,04
N2OKiruna, 20020719MIPAS Orbit 2008
13:04, FTIR 09:08, MIPAS 4.61 in FTIR resolution 09:08, MIPAS 4.61, original
Volume mixing ratio [ppmv]
pres
uure
[hP
a]
FTIR-MIPAS [ppmv]
17 coincidences from 20020718 to 20021101
N2O an example:
Comparisons of MIPAS 4.61 N2O profiles with ground-based FTIR at Kiruna
Page 23Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
Statistics
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
10
15
20
25
30
-0,04 -0,02 0,00 0,02 0,04 -20 0 2010
15
20
25
3017 coincidences N2O, FTIR Kiruna
FTIR - MIPAS [ppmv]
Hei
ght [
km]
(FTIR - MIPAS) / FTIR [%]
Comparisons of MIPAS 4.61 N2O profiles with ground-based FTIR at Kiruna
Page 24Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
Comparisons of MIPAS 4.61 N2O “stratospheric“ columns with ground-based FTIR at
ISSJ-Jungfraujoch
Page 25Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
Comparisons of MIPAS 4.61 N2O profiles
with ground-based FTIR at ISSJ-Jungfraujoch
Page 26Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
Comparisons of MIPAS 4.61 N2O profiles
with ground-based FTIR at ISSJ-Jungfraujoch
Page 27Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
Page 28Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
Comparison of ground based FTIR profiles with MIPAS 4.61 N2O profiles
Better agreement for N2O than for CH4
Precision: ± 10 % except in the UT/LS where larger differences can be observed (zigzag)
Limited vertical resolution of ground based FTIR profiles underlines the importance of using appropriate averaging kernels for comparisonUpper part of the FTIR profiles largely constrained by a priori
Possibility to make a statistics on a larger number of profiles than with balloon/aircraft. FTIR useful for trend comparisons with MIPAS
Conclusions
Page 29Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004Atmospheric Chemistry Validation of ENVISAT – ESRIN - 3-7 May 2004
Acknowledgements
Thanks to all the providers of material/plates for this presentation
T. Blumenstock (ground based FTIR)Forschungszentrum Karlsruhe/Institut für Meteorologie und Klimaforschung, Germany
M. De Mazière (ground based FTIR), representing the NDSC community at largeBIRA-IASB, Belgian Institute for Space Aeronomy, Brussels, Belgium
Sorry for those having correlative data but not having sent them to the designated presenter
Top Related