Development and applications of regional reanalyses for Europe and - - PowerPoint PPT Presentation
Development and applications of regional reanalyses for Europe and Germany based on DWDs NWP models: Status and outlook Frank Kaspar 1 , Michael Borsche 1 , Natacha Fery 1 , Andrea K. Kaiser-Weiss 1 , Jan D. Keller 1,2 , Maarit Lockhoff 3 ,
1) Deutscher Wetterdienst, Offenbach, Germany, 2) Hans-Ertel-Centre for Weather Research, Germany, 3) Meteorological Institute, University of Bonn, Germany
ICR5, Rome: F. Kaspar, Requirements for the application of reanalyses 2
Hans-Ertel-Center for Weather Research - Climate monitoring and diagnostics
(developed at the Hans-Ertel-Center for Weather Research (HErZ) at University of Bonn) Continuous nudging SYNOP, SHIP, PILOT, TEMP, AIREP, AMDAR, ACARS,… SST analysis (daily) Snow analysis (6-hourly) COSMO-REA6 (6.2 km) § CORDEX EUR-11 Domain § Data assimilation … ERA-Interim Reanalysis (T255) Soil moisture analysis (SMA) More details: http://reanalysis.meteo.uni-bonn.de/
Hans-Ertel-Center for Weather Research - Climate monitoring and diagnostics
int2lm int2lm int2lm int2lm int2lm int2lm int2lm int2lm int2lm int2lm
3h-aktualisierte Randfelder von ERA-Interim
Soil Moisture Analyse
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Schnee-Analyse Schnee-Analyse Schnee-Analyse SST Analyse Schnee-Analyse
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Hans-Ertel-Center for Weather Research - Climate monitoring and diagnostics
è Regional Reanalysis for Germany / Central Europe
Bollmeyer 2015
with 2km resolution
conditions: COSMO-REA6
years)
nudging for radar data.
Hans-Ertel-Center for Weather Research - Climate monitoring and diagnostics
int2lm
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COSMO 00-06 UTC COSMO 06-12 UTC COSMO 12-18 UTC COSMO 18-00 UTC 00 03 06 09 12 15 18 21 00
1h-aktualisierte Randfelder von COSMO-REA6
Schnee-Analyse Schnee-Analyse Schnee-Analyse SST Analyse Schnee-Analyse
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Beobachtungen (kontinuierlich) Beobachtungen (kontinuierlich) Beobachtungen (kontinuierlich) Beobachtungen (kontinuierlich) Radar-Daten (LHN) Radar-Daten (LHN) Radar-Daten (LHN) Radar-Daten (LHN)
DWD, 10. Feb 2016 Andrea Kaiser-Weiss (KU21) 7
COSMO-REA6: 1995-2015 2016, 2017 currently produced and evaluated
ICR5, Rome: F. Kaspar, Requirements for the application of reanalyses 8
TOP5 Atmospheric surface: Air temperature 1212 (75%) Wind speed and direction 1194 (73%) Pressure 1115 (69%) Atmospheric upper air: Temperature 929 (57%) Wind speed and direction 923 (57%) TOP5 Atmospheric surface: Precipitation 895 (55%) 282 (17%) Oceanic surface: Sea-surface temperature 691 (43%) 246 (15%) Terrestrial: River discharge 134 ( 8%) 218 (13%) Atmospheric surface: Surface radiation budget 555 (34%) 210 (13%) Atmospheric upper air: Cloud properties 397 (24%) 199 (12%)
see also: Gregow et al.: A worldwide survey … concerning reanalysis … 10.1175/BAMS-D-14-00271.1
ICR5, Rome: F. Kaspar, Requirements for the application of reanalyses 10
Investments depend on datasets Requirement: Should be based on state-of-the-art knowledge. UERRA
è Suggested increase in capacity to 15 GW until 2030. è Federal agencies should provide the data needed by investors for their bids. è Close discussion with user community (with a detailed opinion on
requirements)
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Clear added value of regional reanalyses on hourly and daily scale
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Maximum peak at weekly timescale
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The use of hourly instead of six hourly reanalysis and observation data can improve the results significantly
See also Poster: D. Niermann et al.
è Good agreement at 10 m height è Problems >50m
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è Extreme North Sea storm surges and their impacts: Identification of
16 More details: Talk of Natacha Fery (DWD) et al.
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Storm Christian, 2013 Storm Christian, 2013
More details: Talk of Natacha Fery (DWD) et al.
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Strong bias over the Alps in first comparison with CMSAF data
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Second reference (HelioMont) with improved algorithms for the Alpine region lead to smaller bias
Michael Borsche (DWD)
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Lateral boundary: ERA-Interim
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Area: CORDEX EUR-11
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Spatial resolution: 0.11° gridspacing
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440x428 grid points
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40 vertical levels
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Time range: 2006-2010
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Model output: 15 min (2D fields), 60 min (3D fields)
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Data Assimilation: Continuous ensemble nudging of
è Radiosondes (PILOT, TEMP) è Aircraft measurements (AIREP, AMDAR, ACARS) è Wind profiler è Station data (SYNOP, SHIP, DRIBU) è
Additional analysis modules comprise
è Snow analysis (every 6 hours) è SST analysis (every 24 hours) è Soil moisture analysis (every 24 hours)
21 See Poster: Lockhoff et al.
Hans-Ertel-Center for Weather Research - Climate monitoring and diagnostics