SOEE 3570 Practical Weather Forecasting: Presentation Friday 3 rd Ｄｅｃｅｍｂｅｒ ２０１０

1. The impact of a low pressure system on ash dispersal routes from EyjafjallajÖkull： １５th－１７th May ２０１０ SOEE 3570 Practical Weather Forecasting: Presentation Friday 3rd　Ｄｅｃｅｍｂｅｒ　２０１０ By Sophie Yeomans and Emily Banham

2. What we did: • Edited the namelist file to the correct time and location: Where: (Iceland/Scotland/Norway) • 1 domain… • Co-ordinates: Latitude 50°; Longitude -6° • Domain size: 100 x 100 cells When: • 0000UTC 15 May 10 to 0000UTC 18 May 10 • Time step: 06 hours What: • Wind direction • Trajectories – 2, 3 and 5km

3. How we did it: WPS: edited namelist ran geogrid removed unwanted log files  ran ungrib  ran metgrid  PRE-PROCESSING COMPLETE WRF: ran real.exe code  ran wrf.exe code RIP4: made directory  moved in data file from WRF  plotted output  graphical outpu

4. Results • Wind vectors – initially approaches Scotland around low pressure system, and Norway does not seem affected until 1800UTC 16 May 10.

5. Trajectories – ash cloud reaches Scotland and not Norway