1. CAVIAR flights 9 flights Runs 15,000 to 35,000 feet Spiral descents over Jungfraujoch Dropsondes from high level MetOp underflights FL150 FL350

2. Jungfraujoch Mönch Jungfrau Eiger

3. Jungfraujoch

6. Instruments Buck hygro and lidar not fitted FWVS seemed to work very successfully ARIES failure one flight MARSS, SWS/SHIMS all good

7. Summary of flights Weather conditionsComments B466 Cloud at times over JungfraujochPartial NPL data B467 Initially thin cirrus which clearedGood NPL data B468 Good clear sky conditions FLASH sonde* + MetOp overpass B469 Cloud at times over JungfraujochPartial NPL data B470 Some thin cirrus encroachingGood NPL data B471 Excellent clear sky conditionsMetOp overpass B472 Excellent clear sky conditionsARIES failure B473 Excellent clear sky conditionsNo TAFTS B474 Partial cloud over JungfraujochCancelled am flight, pm only * Institute of Applied Physics in Bern launch radiosondes from Payerne equipped with RS92, Snow White and FLASH-B (Lyman-alpha) hygrometers

8. ARIES data: B471 spiral descent FAAM spiral descent measurements of temperature (Rosemount de-iced probe) and dew point (FWVS) ARIES zenith data during spiral descent over Jungfraujoch

9. Profile comparisons