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Improved Water Vapour and Wind Initialisation for Precipitation Forecasts:

Improved Initialization for Precipitation Forecasts: Analysis of the ETReC missions during COPS 2007 Andreas Dörnbrack, Martin Wirth, and George C. Craig Institut für Physik der Atmosphäre DLR Oberpfaffenhofen Germany. Improved Water Vapour and Wind Initialisation for Precipitation Forecasts:

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Improved Water Vapour and Wind Initialisation for Precipitation Forecasts:

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  1. Improved Initialization for Precipitation Forecasts: Analysis of the ETReC missions during COPS 2007Andreas Dörnbrack, Martin Wirth, and George C. CraigInstitut für Physik der AtmosphäreDLR OberpfaffenhofenGermany

  2. Improved Water Vapour and Wind Initialisation for Precipitation Forecasts: From existing LIDAR Data towards Targeted Observations 2003 Improved Water Vapour and Wind Initialisation for Precipitation Forecasts: Impact Studies with the ECMWF Integrated Forecast System 2005 Improved Initialisation for Precipitation Forecasts: Analysis of the ETReC missions during COPS 2007 2007

  3. Falcon payload for COPS/ETReC 2007 u,v,w,TAS T,P,q Dropsondes: u,v, P,T,q DIAL: H2O, Aerosols u,v w Doppler lidar: Horizontal & vertical wind

  4. Water Vapour and Wind Lidar on board the Falcon Data Acquisition Wavelength Control DIAL Filters & Detectors 48 cm Telescope LCD-Screen Keyboard DIAL Lasers wind lidar two 50 cm aircraft windows

  5. DLR Falcon Missions Altogether: 48.8 flight hours/ 22.5 h funded by DFG

  6. Upstream Mission: ETReC 2007 UOP 6 Possible Flight Route Sensitive Region: Singular Vector (ECMWF) Sensitive Region: ETKF (MeteoFrance)

  7. Case Study on COPS IOP 13a on 1 August 2007 • 3 consecutive flights • Flight 1 & 2: Upstream • flights (OP - Faro & Faro - OP) • Flight 3: Modified MAP • flight over France Diploma Thesis: Andreas Schäfler (Univ. Innsbruck) "Water vapour transport in a pre-convective environment - use of airborne LIDAR measurements"

  8. Synoptic Situation from ECMWF short-term forecast 1 August 2007, 16 UTC

  9. Water Vapor Mixing Ratio Wind velocity

  10. DIFFERENCES LIDAR - ECMWF

  11. DIFFERENCES LIDAR - ECMWF

  12. Overall Aim of the Project • investigate the influence of simultaneously observed wind and water vapour fields from airborne lidar observations during COPS on the skill of the NWP, especially the quantitative precipitation forecasts using the 4D-Var data assimilation scheme of the ECMWF-IFS • In order to reach this goal, we proceed in three steps: • check of the data quality and coverage of the lidar data for the three UOPs with airborne observations during ETReC 2007, • analyse the wind and water vapor lidar data and perform a case study of a selected ETReC case, and • investigate the impact of the targeted airborne wind and water vapour observations and of the additional radiosonde and high-frequency AMDAR measurements of selected UOPs during ETReC 2007 on the forecast skill of NWP models

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