Météo-France report on the use of sounder data
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Météo-France report on the use of sounder data
Philippe Chambon*, Olivier Audouin, Marylis Barreyat, Mary Borderies, Olivier Coopmann, Nadia Fourrié,
Jean-François Mahfouf, Rohit Mangla, Dominique Raspaud
CNRM, Université de Toulouse, Météo-France and CNRS
* philippe.chambon@meteo.fr
ITSC-23 / June 24 - 30, 2021
Evolutions in the operational framework
FSOi are now computed routinely for the ARPEGE model and
available both in histograms and time series since January 2020
Example of FSOi time series for 1st semester 2020
Conv (incl. aircrafts)
Sat. Winds
Aeolus
Scatt.
GNSS-RO
Sat. IR
Sat. MW
Courtesy of
Dominique Raspaud,
Alexis Doerenbecher
and MF/DirOP/COMPAS
Evolutions in the 2021 parallel suite for the ARPEGE global model
A new parallel suite is currently being set up at Météo-France, it includes modifications in
the usage of observations within the ARPEGE global model :
- Activation of the “1-Bay + 4D-Var” scheme to assimilate cloudy and rainy radiances
- Assimilation of MWHS-2/FY3-D (183 GHz channels)
- Monitoring of MWTS-2 and MWRI/FY3-D
- Assimilation of ABI/GOES-16 radiances
Activation of the “1-Bay + 4D-Var” scheme for cloudy and rainy radiances of ATMS (NPP,
NOAA-20) and MHS sounders (NOAA-19, MetOp-B, MetOp-C)
Relative impact
on T forecasts
w.r.t. ECMWF => Presentation by Mary Borderies
analysis over the on Wednesday 30 (talk 9.02)
Globe
Forecast range (h)
200 0.5 0.5
1 0.5 0.5
300 0 0.5
Evolutions in the 2021 parallel suite for the ARPEGE global model
0 0.5
1.5 500
1 0.5
1.5 2 850 0
1000
6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96102 0 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96102
NORD20
1.5
A new parallel suite50 is currently being set up at Météo-France, it includes modifications in
1.5 20 0.5
0
1 0 0.5
0.5
100 0.5
the usage of observations
1 200
300
within the ARPEGE global model :
1.5
1.5 0.5
0.5 0.5
0
0.5
0.5
- Activation of500the “1-Bay + 4D-Var” scheme to assimilate cloudy and rainy radiances
0.5
0.5 0.5
5
00..5 0.5
1 850 0.5 0
0.5
- Assimilation1000of MWHS-2/FY3-D (183 GHz channels)
6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96102 0 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96102
1.5
- Monitoring of20 MWTS-2 and MWRI/FY3-D
TROPIQ
2 0 0 0 0
1
- Assimilation100of
50 ABI/GOES-16 radiances
1.5
1.5 0 0.5
0
1 0.5
200 1 01.5
0.5
300 1
0 0.5 0.5 0 0.5
500
Assimilation of the 5 humidity channels of MWHS-2/FY3-D
1 0.5 10.5
1
1
850 0.5
0 0.5
1000 0
6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96102 0 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96102
SUD20
1.5
1 Relative
1.5
impact
1
20
50
0
0.15
0.5
on T forecasts
1
1
100 0.5
1.5 200 0.5 0.5
w.r.t. ECMWF 300 1 0.5
0.5
1 0.5 0.5
analysis 1for 500 1
1 .5 0.5
1 1.5
SOUTH20
1
850
1000 => Main impacts in the Southern hemisphere
6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96102 0 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96102
on T, Hu and winds
Forecast range (h)
Evolutions in the 2021 parallel suite for the ARPEGE global model
A new parallel suite is currently being set up at Météo-France, it includes modifications in
the usage of observations within the ARPEGE global model :
- Activation of the “1-Bay + 4D-Var” scheme to assimilate cloudy and rainy radiances
- Assimilation of MWHS-2/FY3-D (183 GHz channels)
- Monitoring of MWTS-2 and MWRI/FY3-D
- Assimilation of ABI/GOES-16 radiances
Assimilation of ABI/GOES-16 radiances.
Relative impact
on T forecasts
w.r.t. ECMWF
analysis for the => Presentation by Olivier Audouin
TROPICS
on Friday 29 (poster 1p.01)
Forecast range (h)
Ongoing research for future evolutions
Research is currently ongoing on the following subjects :
- Using ensembles of RT simulations within clouds and precipitation
- Preparation to the assimilation of MWI and ICI / EPS-SG and consistency with FCI/MTG
- Preparation to the assimilation of IRS/MTG and IASI-NG/EPS-SG
- Preparation to the monitoring of DPR/GPM-Core and CPR/Earth-Care
- Preparation to the monitoring/(assimilation?) of TROPICS data
Using ensembles of RT simulations (microphysical assumptions) within clouds and
precipitation to better characterize and propagate uncertainties to the analysis.
Statistics based on 2-month of inversions with GMI data
Weight
of each
particle
shape
within a
1D-Bay
inversion PhD of Marylis Barreyat
Scattering Index (K) (2019-2022)
Ongoing research for future evolutions
Research is currently ongoing on the following subjects :
- Using ensembles of RT simulations within clouds and precipitation
- Preparation to the assimilation of MWI and ICI / EPS-SG and consistency with FCI/MTG
- Preparation to the assimilation of IRS/MTG and IASI-NG/EPS-SG
- Preparation to the monitoring of DPR/GPM-Core and CPR/Earth-Care
- Preparation to the monitoring/(assimilation?) of TROPICS data
Simulations of MWI, ICI and FCI, ingested within the 1D-Bay for independent or
combined inversions => gaining in understanding of how problematic for DA are the
different assumptions within IR and MW RT simulations.
PhD of Ethel
Villeneuve
(2020-2023)
Ongoing research for future evolutions
Research is currently ongoing on the following subjects :
- Using ensembles of RT simulations within clouds and precipitation
- Preparation to the assimilation of MWI and ICI / EPS-SG and consistency with FCI/MTG
- Preparation to the assimilation of IRS/MTG and IASI-NG/EPS-SG
- Preparation to the monitoring of DPR/GPM-Core and CPR/Earth-Care
- Preparation to the monitoring/(assimilation?) of TROPICS data
Conducting OSSEs within the AROME convective scale model, to be prepared from day-
1 for the assimilation of MTG-IRS (channel selection, data flow within the DA system, TB
reconstruction from PC scores, first estimate of impact).
EUMETSAT fellowship of
Olivier Coopmann
(poster 2p.04 on
Monday 28 )
Ongoing research for future evolutions
Research is currently ongoing on the following subjects :
- Using ensembles of RT simulations within clouds and precipitation
- Preparation to the assimilation of MWI and ICI / EPS-SG and consistency with FCI/MTG
- Preparation to the assimilation of IRS/MTG and IASI-NG/EPS-SG
- Preparation to the monitoring of DPR/GPM-Core and CPR/Earth-Care
- Preparation to the monitoring/(assimilation?) of TROPICS data
Preparation to the monitoring of DPR/GPM-Core and CPR/Earth-Care.
Measured reflectivities Reflectivities corrected of attenuation
GPM/DPR
observations :
ARPEGE model
+ RTTOV V13 :
EUMETSAT NWP-SAF
Rohit Mangla
Thank you for your attention !
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