1. DIAMET IOP Sept, Nov-Dec 2011

2. Summary of DIAMET flights so far …… 2 test flights (from Cranfield) 14 science flights (not all separate Flight Numbers) 2 refuel and transit back flights 2 transit flights (to/from Exeter) September 2011Date B646 test flight (Cranfield)15 th Sept (over sea in cloud/clear air SW approaches) B647 DIAMET 1 (single)16 th Sept (Convective band ahead of U/L PV max. DS leg across the PV + insitu 4 legs) B648 DIAMET 2 (double)20 th Sept (Waves along trailing front over SW /Cornwall; a) DS, b) 5 mphys legs across band) B650 DIAMET 3 (double)23 rd Sept (WCB over 2 ry WF trailing west of Ireland; a) DS + mphys, b) Insitu WCB + flux runs) November-December 2011Date B651 test flight (Cranfield)22 nd Nov (over N sea in warm SC cloud, colder ice cloud and clear air) B652 DIAMET 4 (single) 26 th Nov (Flux flight SW of Hebrides (winds a@ 150' ~20 m/s) B653 EXMIX (N Sea – fluxes?)27 th Nov (over North sea at low level (poss good DIAMET fluxes)) B654 DIAMET 5 (single)28 th Nov (DS flight across double front out to 20 W) B655 DIAMET 5 (double)29 th Nov a) (DS + insitu across CF (between land's End/Ireland); b) insitu along CFARR radial) B656 DIAMET 6 (single + refuel Inv + transit)1 st Dec (across bent-back WF nr Shetland + fluxes in high winds B657 DIAMET 7 (single + refuel [aborted double])5 th Dec (insitu in convection W of Scotland (no polar low dev’d)) B658 DIAMET 8 (double)8 th Dec (Strong windstorm over Scotland) B659 EXMIX – MARVEL & B660 EXMIX10 th Dec (B660 -Turbulence probe Cal mphys probe i/c) B661EXMIX (Wardon Hill +)11 th Dec (poss interest but CFARR not setup + sparse cloud) B662 DIAMET 9 (single – double with EXMIX B663)12 th Dec (WF app from the west. DS + Flt legs along 51°18’N) B663 EXMIX (DIAMET 9)12 th Dec (DS over B Channel, insitu legs Wardon Hill – CFARR)

3. B646 (test) - 15 th Sept B647 (single) – 16 th Sept B648 (double) – 20 th Sept B650 (double) – 23 rd Sept B651 (test) – 22 nd Nov B652 (single) - 26 th Nov B654 (single) – 28 th Nov B655 (double) – 29 th Nov B656 (single + refuel) – 1 st Dec B657 (double > single) – 5 th Dec B658 (double) – 8 th Dec B662 (single) – 12 th Dec B663 (EXMIX) – 12 th Dec DIAMET IOP Sept, Nov-Dec 2011

4. B647 Sept 16 th (single)

5. B648 Sept 20 th (double)

6. B650 Sept 23 rd (double)

7. B651 Nov 22 nd (test flight)

8. B652 Nov 26 th (single)

9. B654 Nov 28 th (single)

10. B655 Nov 29 th (double)

11. B654 and B655 Nov 28 th & Nov 29 th

12. B656 Dec 1 st (refuel)

13. B657 Dec 5 th (double > single + refuel)

14. B658 Dec 8 th (double)

15. B662 Dec 12 th (single + EXMIX)

16. B663 Dec 12 th (EXMIX)

17. B662 & B663 Dec 12 th (DIAMET + EXMIX)

18. B646 (test) - 15 th Sept B647 (single) – 16 th Sept B648 (double) – 20 th Sept B650 (double) – 23 rd Sept B651 (test) – 22 nd Nov B652 (single) - 26 th Nov B654 (single) – 28 th Nov B655 (double) – 29 th Nov B656 (single + refuel) – 1 st Dec B657 (double > single) – 5 th Dec B658 (double) – 8 th Dec B662 (single) – 12 th Dec B663 (EXMIX) – 12 th Dec DIAMET IOP Sept, Nov-Dec 2011

19. Summary of DIAMET flights so far …… 2 test flights (from Cranfield 14 science flights (not all separate Flt Nos) 2 refuel and transit back flights 2 transit flights (to/from Exeter) September 2011Date B646 test flight (Cranfield)15 th Sept (over sea in cloud/clear air SW approaches) B647 DIAMET 1 (single)16 th Sept (Convective band ahead of U/L PV max. DS leg across the PV + insitu 4 legs) B648 DIAMET 2 (double)20 th Sept (Waves along trailing front over SW /Cornwall; a) DS, b) 5 mphys legs across band) B650 DIAMET 3 (double)23 rd Sept (WCB over 2 ry WF trailing west of Ireland; a) DS + mphys, b) Insitu WCB + flux runs) November-December 2011Date B651 test flight (Cranfield)22 nd Nov (over N sea in warm SC cloud, colder ice cloud and clear air) B652 DIAMET 4 (single) 26 th Nov (Flux flight SW of Hebrides (winds a@ 150' ~20 m/s) B653 EXMIX (N Sea – fluxes?)27 th Nov (over North sea at low level (poss good DIAMET fluxes)) B654 DIAMET 5 (single)28 th Nov (DS flight across double front out to 20 W) B655 DIAMET 5 (double)29 th Nov a) (DS + insitu across CF (between land's End/Ireland); b) insitu along CFARR radial) B656 DIAMET 6 (single + refuel Inv + transit)1 st Dec (across bent-back WF nr Shetland + fluxes in high winds B657 DIAMET 7 (single + refuel [aborted double])5 th Dec (insitu in convection W of Scotland (no polar low dev’d)) B658 DIAMET 8 (double)8 th Dec (Strong windstorm over Scotland) B659 EXMIX – MARVEL & B660 EXMIX10 th Dec (B660 -Turbulence probe Cal mphys probe i/c) B661EXMIX (Wardon Hill +)11 th Dec (poss interest but CFARR not setup + sparse cloud) B662 DIAMET 9 (single – double with EXMIX B663)12 th Dec (WF app from the west. DS + Flt legs along 51°18’N) B663 EXMIX (DIAMET 9)12 th Dec (DS over B Channel, insitu legs Wardon Hill – CFARR)

20. Future DIAMET IOP periods So far we have flown 68.1 hours (100) (dropped 119 drop sondes, launched 34 Met Office sondes) Spring: (3 week window) Mon 30 th April – Fri 18 th May (no weekends, not bank holiday Mon 7 th May) - based at Cranfield or RAF Benson? - 20 extra NCAS hours to fly in conjunction with Falcon - Falcon not available May (available for HYMEX in October but 146 C-check starts Fri 5 th ; Q) what about Mon 1 st - Thurs 4 th Oct ?) Summer: (6 week window) - shared with MAMM (current IOP is 13 th -16 th ), ClearfLo, Olympics (27 th - 10 th ) Volcano urgency Remaining: - hours - sondes Q) Based on what we have achieved so far, what are our priorities for: a) May, b) Summer In order to decide what we want to prioritise (and when) requires the answer to a series of questions:

21. DIAMET Questions 1.Where will the campaign(s) be held? Cranfield or Benson? Do we get to choose? 2.Benson may be potentially a better base to use, but does it have: a)More flexible operating window ? (maybe yes 06:30-23:00 G 2 to Doug) b)does it have office space for ops room/mission planning? c)Fast internet access? d)Good access to aircraft pre/post flight inc. external access for instrumentation cals/cleaning etc.? e)Additional costs (e.g. for FAAM/DFL/Avalon operating away from Cranfield) (NB. We have an established model of operations now which we don't want to change too radically) 3.What instrumentation will be on the aircraft in these periods? 4.Can be have the same priority fit we chose for Nov-Dec 2011 period? 5.Will staff be available to run kit e.g. FGGA (if available/fitted)? 6.Did any critical issues/failures arise in the Met Office PIKNMIX in Jan-Feb 2012? 7.How do we ensure that the key instruments work in these campaigns? Will we have: a)A properly installed Nevzorov probe (liquid & Total condensed water) and if so will data be available during and/or post flight? b)AIMMS fitted and tested (3.5 weeks scheduled pre, 4 weeks post - MEVALI for instrument maintenance/role change)? c)Others….? 8.How many pilots will be available in May? (Good with 3 in Exeter, but 2 restricts: planning next day flight with flight ongoing; flexibility of flights/hours etc) 9.FALCON only available in October for HYMEX (busy in May) – will 146 be available 1 st - 4 th Oct? Answer to this affects what (and how much) we do in May (e.g. October a higher priority )