1. High resolution NWP in Australia
Peter Steinle & Earth System Modelling + others
Data Assimilation Team Leader
14th Sept 2011

2. NWP systems Met Office Unified Model (UM7.5,L70) 4km City Systems
6 hourly 4dVAR : Global, Region & TC
4km City Systems
No Assimilation (3dVAR expt.)
1.5km UM7.6/L70 (Experimental)
3dVAR
+ radar winds & precip(LHN)
Relocatable
Ensembles
Need Global & Regional EPS
Need deterministic high res.
Bushfires
Under development
Topography & land surface v. important
G: N320 (~40km) + 4dVAR
R: 0.11o +4dVAR
C: 4km ; no DA
The Centre for Australian Weather and Climate Research A partnership between CSIRO and the Bureau of Meteorology

3. Radar coverage Rainfall coverage only ~100km
Rainfall calibration limited
Doppler winds: limited
Focus on 3 major population centres
Sydney, Melbourne & Brisbane
Also main topogrpahy
The Centre for Australian Weather and Climate Research A partnership between CSIRO and the Bureau of Meteorology

4. Focus on high resolution
High resolution verification data? – Rainfall
Forecast skill at 6 hours
Neutral at 3 hours
Focus on hourly precipitation
High impact weather
Clearer depiction of model performance
Major limiting factor?: cloud & precipitation scheme
Overdoes strong tropical convection – model calibration
3dVAR small impact
Latent Heat Nudging has a number of issues
Scientific Aim (hope?): Operational 1.5km NWP for tropical convection in 3 years
The Centre for Australian Weather and Climate Research A partnership between CSIRO and the Bureau of Meteorology

5. Thank you Presenter’s name Presenter’s title Phone: XX XXXX XXXX
The Centre for Australian Weather and Climate Research
A partnership between CSIRO and the Bureau of Meteorology
Presenter’s name
Presenter’s title
Phone: XX XXXX XXXX
Web:
Thank you