REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
DATA ASSIMILATION PROGRESS IN SLOVENIA
Benedikt Strajnar
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)
REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Operational suite - sms
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)
REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Upper-air scores
500 hPa
925 hPa
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
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
REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
SEVIRI channel 7 guilty?
Channel 3 Channel 7
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
REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
DFI diagnostics
REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
DFI tunning - scores
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
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
REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Impact of 2 m RH and T assimilation
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
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)
REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Case I:
Improved location of afternoon convection in assimilation run
REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Case II: weak front - precipitationASSIMDYN. ADA. INCA
REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Case II: weak front – improved timingASSIMDYN. ADA. INCA
REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Case III:
Improved location and time of the first thunderstorm
Radar accumulation
REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
REPUBLIC OF SLOVENIAMINISTRY OF THE ENVIRONMENT AND SPATIAL PLANNING
SLOVENIAN ENVIRONMENT AGENCY
Case III: Next day (+33 h)
ASSIM DYN.ADA.
Case IV: Location of convection
S Slovenia instead of NE
N Adriatic not dry
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