1. AMMA-UK Cambridge 17th January 2006 Chair: Doug Parker 1030 - 1045 Intro. and AMMA news (Doug Parker) 1045 - 1215 Short science talks 1045 - Update on flux stations (Colin Lloyd) 1055 - Land surface diagnostics during dry run (Phil Harris) 1105 - Impacts of soil moisture on storm initiation (Chris Taylor) 1115 - Atmospheric controls on mineral aerosols in the Saharan heat low (Richard Washington) 1125 - The nocturnal boundary layer during August 2005 (Caroline Bain) 1135 - Mineral dust and its influence on radiative fluxes at Hombori in April 2005 (Sally Lavender) 1145 - Lab leaf studies (Ally Lewis) 1155 - Forecasting dry run of August 2005 (Doug Parker) 1205 - Discussion 1215 - 1300 Lunch

2. Chair: Chris Taylor 1300 - 1400 Scientific planning 1300 - OWP5 SCOUT small balloon campaign (John Pyle) 1315 - OWP3 sodars, tethersonde and radiosondes (Doug Parker) 1330 - OWP4 review of flight plans (Claire Reeves) 1345 - new activities, e.g. ground-based chemistry in Benin (Julie Saxton) 1400 - 1430 Break out groups - Location of GCs - Radiosondes ? Thethersondes ? - Modelling ? - Other ? 1430 - 1500 Logistical discussions (1) 1400 - Personnel schedules (Dave Stewart) 1415 - Shipping, Accommodation etc (Dave Stewart) 1500 - 1530 Tea

3. Chair: Claire Reeves 1545 - 1700 Logistical discussions (2) 1545 - H+S discussion (Colin Lloyd and Ruth Purvis) 1620 - Visas, etc, (Ruth Purvis) 1640 - Aircraft instrument fit (Ruth Purvis or Alan Woolley) 1655 - AMMA Metadatabase (Claire Reeves) 1530 - 1545 Modelling 1530 - Modelling strategy (Glenn Carver)

4. I1.4 Surface-atmosphere: Land-atmosphere interactions (SOP2-a2 – Parker) Week29/55/612/619/ 6 26/63/710/ 7 17/ 7 24/ 7 31/731/7 7/87/8 14/814/8 21/ 8 28/828/8 4/94/9 11/9 SOP # SOP1SOP2 Dates1 June – 30 June1 July – 15 Sept Aircraft SOP 1-aSOP 2-a1SOP 2-a2SOP 2-a3 Dates1 – 15 June1 – 15 July17 July – 25 August1 – 15 Sept BAe14617 July – 21 August22 – 28/8 ATR1 – 15 June1 – 15 July25 July – 25 August F-F201 – 15 June1 – 15 July25 July – 25 August1 – 15 Sept D-F201 – 15 July31 July – 18 August Geoph.31 July – 18 August Ground Dano fluxes 1-15 June23 July – 20 August Dano r’sondes 1-15 June23 July – 20 August Driftsondes 15 July – 15 August (N’Djamena) Ocean soundings 25 May – 7 July (R/V Atalante) Oceanic mast 25 May – 7 July (R/V Atalante) Constant vol. balloons 15 June – 15 July Tethered balloon 17 July – 21 August Sodar network 1 June – 21 August MIT C-band radar 1 June – 15 August Ronsard radar 15 June – 15 September Bistatic radar 15 June – 15 September Micro rain radar January-December Lidar network M’bour, Niamey (ARM Mobile Facility), Banizoumbou, Djougou, Tamanrasset (TReSS) Lidar ceilometer Niamey (ARM Mobile Facility), Djougou Deposition fluxes M’Bour, Cinzana, Banizoumbou Aerosol characterisation M’Bour, Cinzana, Banizoumbou, Tamanrasset, Djougou Chem. instruments SOP 2a1 & 2a2 Lightning network SOP 1 & SOP 2 Microwave radiometer January-December UHF radar GPS network Tombouctou, Ouagadougou and Tamale RS network SOP southern, northern and western quadrilaterals ARM Mobile Facility January-December Soil moisture radar June-September Ozone soundings Cotonou

5. I1.4 Surface-atmosphere: Land-atmosphere interactions (SOP2-a2 – Parker) 45 min ~ 270 km 30 min s ~ 1 hou r 500 ft 24 kft / FL240 ~ 400 hPa 75 min ~ 450 km 30 min s ~ 1 hou r 500 ft 24 kft / FL240 ~ 400 hPa 50 min ~ 300 km 30 mi ns ~ 50 min 50 0 ft 24 kft / FL240 ~ 400 hPa

6. I1.4 Surface-atmosphere: Land-atmosphere interactions (SOP2-a2 – Parker) J-1J0J+1J+2 Daytime precipitation AmpmampmamPm 06001200 10001600 J-1J0J+1J+2 Evening / nocturnal precipitation AmpmampmamPm 120007001200 150010001500 J-1J0J+1J+2 Evening / nocturnal precipitation pm1pm2ampmamPm 120018001200 150021001500 Table 2.4.1: Sets of proposed take-off and landing times for I1.4 flights over soil moisture patterns ((i) above), beginning on day J0, conditional on the timing of different rainfall events prior to J0. Flights having taken place on J-2 or J-1 would be desirable. Local time assumed.

7. I1.4 Surface-atmosphere: Land-atmosphere interactions (SOP2-a2 – Parker) J0J+1 AmpmamPm 0400 1200 1000 1500 Table 2.4.2: Proposed take-off and landing times for I1.4 flights over vegetation patterns ((ii) above), beginning on day J0 and typically following rainfall on day J-1. Flights having taken place on J-2 or J-1 would be desirable. Local time assumed.

8. I1.5: Vegetation emission surveys (SOP2-a2 – Reeves, Parker) 500 ft 6000ft ? 60 miles Top of BL

9. I1.6: Urban surveys (SOP2-a2 – Parker, Lewis)

10. Coordinated MCS flights I2: Dynamics and chemistry of MCSs (SOP 2a1, SOP 2a2 – Mari, Flamant, Reeves, Hoeller)

11. I3: Long range transport surveys (SOP2-a2 – Reeves, Mari, Schlager) I3.1: Impact of Mesoscale Convective Systems on TTL composition (MCS- TTL)

12. I3: Long range transport surveys (SOP2-a2 – Reeves, Mari, Schlager) I3.2: Large-scale impacts of deep convection – long-range transport (LRT-TTL)

13. Ouaga Deployment Meeting 30-31 Jan at IPSL Paris 31 st Joint flights with aircraft based in Niamey

14. IOP Flight funding I1I2I3I4 I1.1I1.2I1.3I1.4I1.5I1.6I1.7I2.1I3.1I3.2I4.1I4.2 BAe146NERC EU ATRAPI F-F20API D-F20EU M55EEIG INSU CNES EU

15. IOP BAe-146 Flight Hours BAe146 Flight plan I1.1I1.2I1.3I1.4I1.5I1.6 I1.7 I2.1 and I2.2 I3I4.1I4.2 I1.7.1I1.7.2 Description of FP ITF and Heat Low Aerosol emissions/ squall passage N/S Land/Atmos/Oc ean interact Land/Atmos interact Veget. emiss ion Urb an Surv ey Aerosol mixing. Hygroscopicity Dyn and Chem of MCS Long range transp ort Mesosc ale structur e Vertica l structu re Before squall line After squa ll line Niamey- cotonou +guinee gulf Niam ey- Homb ori FH/flight44244 nb of flights125243 Total FH482041612 typical time of flights 0600-1000, 1400-1800 1200- 1600 any variabl e Total 100

16. Flight Planning

17. IOP patternI1.1: ITF and Heat Low Surveys I1.2: Dry Squall Line Passage I1.3: N-S Land-Ocean- Atmosphere Interactions I1.4: Land- atmosphere I1.5: Vegetation Emission Surveys I1.6: Urban Surveys I1.7: Aerosol Mixing and Hygroscopic ity I2: Dynamics and Chemistry of MCSs I3: Long Range Transport I4: MCSs Mesoscale & vertical Structure Key Phenomen a/ Lead time 24 hours24 hours or less 1-4 days 24 hours12 hours1-4 days24 hours1-3 days24 hours or less Intraseason al regime Flights before and after monsoon onset Pre- onset Monsoon onset. Presence of wet or dry period; likelihood of subsequent rain Presence of wet or dry period N/A Presence of a wet or dry period Needs to be defined. Presence of a wet period Heat LowIntensity of heat low N/AIntensity of heat low N/A ITCZ/ITFLocation of ITF affects flight patterns N/ALocation of ITCZ affects flight pattern May influence latitude of flights N/ALocation of ITCZ affects flight pattern Influences convective regime. N/A Jets (AEJ, TEJ, STJ) Consider AEJ position and strength N/A May influence latitude of flights Affect latitude of flights N/A Influences convective regime. Jet strengths influence outflow Influences convection regime AEWs and vortices Consider AEW activity and phase. N/AConsider AEW activity and phase. May influence location of flights Location and intensity of trough/ridge patterns and vortices N/A Location and intensity of trough/ridge patterns and vortices Consider AEW activity and phase. N/A Dry intrusions N/A May be relevant to AEW patterns N/A Location and depth of dry air Strong SAL intrusions wil be of interest N/A MCSs and convection Avoid CbDry squall events. Seek land surface responses to Cb. Avoid Cb during flights. Seek land surface responses to Cb. Avoid Cb during flights Avoid Cb MCSs over the mesoscale ground sites May follow MCS events from east to west MCS over the radar ground sites or within the swath of the A-Train Non- precipitating convection N/A May Influence flight pattern Northward extent may affect latitude of flights N/AMay Influence flight pattern N/ANorthward extent may affect latitude of flights N/A Land surface Flights before and after monsoon onset Dust emission & depositio n N/ASoil moisture will guide flight planning Strong E-W soil moisture variability N/A Rainfall on dry surface could be attractive. Probably N/A – needs to be clarified N/A Special products N/ASatellite aerosol products. N/ASoil moisture patterns from satellite Chemical trajectories. Soil moisture patterns from satellite N/ASoil moisture patterns from satellite Chemical trajectories Ground based radar products

18. AMMA database. Web tool: http://medias.obs-mip.fr/ammamd To fill a new form or update an existing form: login : amma-eu password : 08nov05 For any further information contact Laurence Mastrorillo: mastrori@medias.cnes.fr