Institut für Physik der Atmosphäre

ETReC 2007 Hans Volkert (for George Craig)

DLR-Institut für Physik der Atmosphäre

Folie 2 > Vortrag > AutorInstitut für Physik der Atmosphäre

ETReC 2007 Strategy

Identify sensitive regions, i.e. optimal locations for supplementary observations for convective events in two European regions

1. COPS (guidance for targeted observation missions)

2. Mediterranean (preparation for future HYMEX campaign)

Dispatch targeted observations

1. EUCOS additional conventional observations on 6 days

– Radiosonde: 6 hourly ascents at ~10 locations

– AMDAR: T, p sensors on commercial aircraft giving ~4000 extra data points

2. DLR Falcon flights to sensitive regions

– wind and water vapour Lidars, dropsonde

Folie 3 > Vortrag > AutorInstitut für Physik der Atmosphäre

Sensitive regions:

Observation 12UTC 8.7.2007 (Sunday)

Verification 12UTC 9.7.2007 (Monday)MeteoFrance

ETKF

(Philippe Arbogast)

MeteoFrance

Adjoint

(Alexis Doerenbecher)

ECMWF

Singular Vectors

(Andy Lawrence)

Sensitive Regions

1. ECMWF - moist singular vectors (SVs) in the IFS modeling system

2. Météo France - Ensemble Transform Kalman Filter (ETKF) based on the Arpège ensemble prediction system (PEARP)

3. Météo France - adjoint method using dry physics, using the Arpege modeling system

4. Météo France - adjoint method using moist physics, using the Arpege modeling system

5. University of the Balearic Islands - adjoint method using moist physics, using the MM5 modeling system

Folie 4 > Vortrag > AutorInstitut für Physik der Atmosphäre

Targeted Observations

ETReC 2007 Verification Regions

COPSD-PHASE

MEDEXHYMEX

EUCOSAdditional Radiosondes AMDAR

T,P,q

u,v,w,TAS

Dropsondes:u,v, P,T,q

Conical scan: u, v components Vertical pointing : w component

DIAL:H2O , Aerosols

Falcon Payload during COPS

DWL

Folie 5 > Vortrag > AutorInstitut für Physik der Atmosphäre

ETReC 2007 Upstream Observation Periods (UOP)

UOP Date AMDAR Radiosonde DLR Falcon

1 26 June 2007 X X

2 3 July 2007 X X

3 8 July 2007 X X X

4 15 July 2007 X X

5 19 July 2007 X X X

6 29 July 2007 X X

7 1 Aug 2007 X X

Folie 6 > Vortrag > AutorInstitut für Physik der Atmosphäre

Planned Work

1. Data denial studies to determine relative importance of different sensitive region forecasts (ECMWF) - in progress

2. Case study analysis to identify physical machanisms for sensitivity and observation impact (DLR) - DFG project funded

3. Data impact studies to assess impact of additional observations

4. ....