Page 1 Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002 Evaluation of Envisat data using a NWP Assimilation System: A vortex-centred view Authors: W.A. Lahoz, S. Migliorini, R. Bannister, R. Brugge, A. O’Neill Data Assimilation Research Centre, Reading, UK Thanks: ESA, Envisat cal-val teams, Met Office (UK), CNR.IFAC, BADC
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Evaluation of Envisat data using a NWP Assimilation System: A vortex-centred view
Evaluation of Envisat data using a NWP Assimilation System: A vortex-centred view. Authors: W.A. Lahoz, S. Migliorini, R. Bannister, R. Brugge, A. O’Neill Data Assimilation Research Centre, Reading, UK Thanks: ESA, Envisat cal-val teams, Met Office (UK), CNR.IFAC, BADC. Talk overview. - PowerPoint PPT Presentation
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Page 1Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Evaluation of Envisat data using a NWP Assimilation System: A vortex-centred
view
Authors: W.A. Lahoz, S. Migliorini,
R. Bannister, R. Brugge, A. O’Neill
Data Assimilation Research Centre,
Reading, UK
Thanks: ESA, Envisat cal-val teams,
Met Office (UK), CNR.IFAC, BADC
Page 2Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Talk overview
Aims
Methodology
Results
- Qualitative
- Quantitative
Conclusions
Further Work
Page 3Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Aims
Evaluate L2 GOMOS, MIPAS & SCIAMACHY data (AOID 1039)
Height-resolved and total column data
- Temperature
- Ozone
- Water vapour
Page 4Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Methodology
Apply to L2 data (unassimilated): vortex-centred view
Vortex-centred view used to look at UARS MLS water vapour
data (Lahoz et al, JAS 1994; QJRMS 1996)
Self-consistency
Comparison against independent datasets
Qualitative/quantitative comparisons
Later: apply to L2+ data (assimilated into a NWP system)
Page 5Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Results: qualitative
24/Oct/2002
Geopotential
Height: Met Office
12 GMT
1, 10, 100hPa
MIPAS orbit track
18.42 – 19.30 GMT
1hPa 10hPa
100hPa Orbit track
S
E
GMID
Page 6Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Results: qualitative
24/Oct/2002
Temperature MIPAS (top)
Temperature Met Off (bottom)
Along orbit track
S E
S E
1hPa
10hPa
100hPa
1hPa
10hPa
100hPa
Page 7Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Results: qualitative
24/Oct/2002
Ozone MIPAS (top)
Water vapour MIPAS (bottom)
Along orbit track
S E
S E
1hPa
10hPa
100hPa
1hPa
10hPa
100hPa
Page 8Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Results: qualitative
24/Oct/2002
CH4 MIPAS (top)
N2O MIPAS (bottom)
Along orbit track
S E
S E
1hPa
10hPa
100hPa
1hPa
10hPa
100hPa
Page 9Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Results: qualitative
24/Oct/2002
HNO3 MIPAS (top)
NO2 MIPAS (bottom)
Along orbit track
S E
S E
1hPa
10hPa
100hPa
1hPa
10hPa
100hPa
Day Night
Page 10Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Results: qualitative
27/Sep/2002
MIPAS v sondes
(Ny Alesund: 78.9N, 11.9E)
Temperature (top; K)
Ozone (bottom; ppmv)
1hPa
1000hPa180 300
1hPa
1000hPa0 15
Page 11Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Results: qualitative
27/Sep/2002
MIPAS v sondes
(Payerne: 46.8N, 7.0E)
Temperature (top; K)
Ozone (bottom; ppmv)
1hPa
1000hPa180 300
0
1hPa
1000hPa15
Page 12Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Results: qualitative
27/Sep/2002
MIPAS v sondes
(Marambio: 64.3S, 56.7W)
Temperature (top; K)
Ozone (bottom; ppmv)
1hPa
1000hPa180 300
1hPa
1000hPa0 15
Page 13Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Results: qualitative
25/Sep/2002
Total ozone column
SCIAMACHY
& footprint
Total ozone column
analyses (KNMI/
ESA)
Page 14Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Results:quantitative
MIPAS v
Sonde ( x AK)
Jokioinen (60.8N,
23.5E)
18 Sep 2002
Chi-squared test
Temperature (K)
MIPAS Averaging Kernels
Red star: MIPAS
Green diamond: Sonde x AK
Page 15Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Results:quantitative
MIPAS v
Sonde ( x AK)
Ny Alesund
200hPa->10hPa
September 2002
Ozone (LH)
Temperature (RH)
+1-1 +1-1
Page 16Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Results:quantitative
MIPAS v
Sonde( x AK)
Several stations
200hPa->10hPa
September 2002
Ozone (LH)
Temperature (RH)
Page 17Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Results: quantitative
23/Sep/2002
Histogram
SCIAMACHY –
KNMI/ESA (Total
ozone / DU)
GOME bias not
removed
Page 18Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Results: quantitative
24/Sep/2002
Histogram
SCIAMACHY –
KNMI/ESA (Total
ozone / DU)
GOME bias not
removed
Page 19Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002
Results: quantitative
25/Sep/2002
Histogram
SCIAMACHY –
KNMI/ESA (Total
ozone / DU)
GOME bias not
removed
Page 20Validation by Model Assimilation and/or Satellite Intercomparison - ESRIN 9–13 December 2002