DATA ASSIMILATION PROGRESS IN SLOVENIA
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Transcript of DATA ASSIMILATION PROGRESS IN SLOVENIA
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
DATA ASSIMILATION PROGRESS IN SLOVENIA
Benedikt Strajnar
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
DATA assimilation status at SEAOperational since March 30th 2011
Two 54 h production runs per day (00, 12 UTC), sms
Clear surface improvement, neutral upper-air scores
Improved precipitation cases (convective and stratiform)
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Operational suite - sms
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
2m T and RH scores for May 2011
Improved surface temperature
Dry humidity bias (opposite sign)
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Upper-air scores
500 hPa
925 hPa
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Revised use of satellite data
channel selection based on obs-guess (~0.5 K) and analysis-guess (~0.1 K) Tb bias
removal of ch. 13 AMSU-A because of a low model top (5 hPa)
temporal blacklisting via run-dependent LISTE_LOC
added MSG SEVIRI ch. 7 on top of 2,3
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Revised usage of satellite data - scores
Scores mixed for all variables, degradation for RH
Wind directionWind speedRelative humidity
Temperature Geopotentiel
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
SEVIRI channel 7 guilty?
Channel 3 Channel 7
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
DFI tuning Modifications of DFI cut-off period (TAUS) Tests of incremental vs. non-incremental filter Tests also with no initialization
6-minute rainfall accumulation
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
DFI diagnostics
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
DFI tunning - scores
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
VARBC impact
Varbc tested for a period of 1 month (24h cycling), 1 – 10 hPa predictor switched off
Warming-up period was 14 days
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Order of surface and upper-air analysis
Scores for near-surface T and RH clearly improved if surface is analysed before the atmosphere
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Impact of 2 m RH and T assimilation
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
LANDSAF Albedo assimilation impact
Proof of concept at 4.4 km
Cold model bias (February 2011, around 5°C) decreased up to 1 K (average ~ 0.2 K) due to LANDSAF albedo estimates
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Plans
Migrate to cy36
Test and use METOP
Test and use IASI
Test and use S-Mode high-resolution aircraft data
Test surfex
Explore possibilities to use Slovenian GPS data
Improve vertical resolution
Recompute B, choose better periods (summer B matrix at the moment)
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Case I:
Improved location of afternoon convection in assimilation run
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Case II: weak front - precipitationASSIMDYN. ADA. INCA
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Case II: weak front – improved timingASSIMDYN. ADA. INCA
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Case III:
Improved location and time of the first thunderstorm
Radar accumulation
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
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REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Case III: Next day (+33 h)
ASSIM DYN.ADA.
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Case IV: Location of convection
S Slovenia instead of NE
N Adriatic not dry
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