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CIRPAS Twin Otter

ARM Aerosol IOP – May 2003. CIRPAS Twin Otter. Twin Otter data used in 10 (8 in press, 2 in revision) publications for AIOP JGR special issue. Beat Schmid (PI and Platform Scientist) contributed to 8 of these through his current ARM ST activity. . Aerosol Lidar Validation Experiment (ALIVE).

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CIRPAS Twin Otter

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  1. ARM Aerosol IOP – May 2003 CIRPAS Twin Otter • Twin Otter data used in 10 (8 in press, 2 in revision) publications for AIOP JGR special issue. • Beat Schmid (PI and Platform Scientist) contributed to 8 of these through his current ARM ST activity.

  2. Aerosol Lidar Validation Experiment (ALIVE) NASA Ames Airborne Tracking 14-channel Sun photometer (AATS-14) Sky Research J-31 Research Scanning Polarimeter (RSP) Navigational and Meteorological Parameters Cessna 206 Raman Lidar Micro Pulse Lidar DOE Oklahoma, Sep 11-22, 2005 Lead Scientist: B. Schmid

  3. Purpose • Validate Aerosol Extinction Profiles over ARM CRF in Oklahoma derived from ground-based Raman and Micropulse Lidars • Validate Aerosol Extinction Profiles derived from ARM Cessna 206 in-situ aerosol plane (IAP) • Derive aerosol optical properties by combining AATS-14 and RSP measurements.

  4. Status and Schedule • J-31 • Various DOE and NASA Safety Reviews • AATS-14: Currently being calibrated at Mauna Loa, HI. • RSP: Successfully integrated and test flown Aug 8-10, Ashland, OR. • Reintegration and test flight of entire payload Sep 8-10, Moffett Field CA. • C206: Expected in Oklahoma end of August. • Raman Lidar: Mods completed last week with one exception: Mirrors not up top spec – vendor is producing replacement mirror(s) to be sent to site on 9/7 • MPL: 2 systems will be deployed. New system has 300 m blind spot. Older system: double pulse problem being worked.

  5. Operations • Flights centered on ARM CRF 36.60°N, 97.48°E. • Timeframe: Sep. 11 – 22, 2005 • 10 days on site • 23 on-site research flight hours • 10-15 short duration flights • Two types of flight patterns • VFR only, avoid sun obscured by cirrus clouds

  6. Type 1: Regular ALIVE Flights

  7. Type 2: Intercomparison Flights • J-31 will wait until Cessna starts its 15K’ leg then take off (~25 min lag) • Vertical separation is always more than 1500 ft • ATC radar flight following at all times • Continuos radio contact between 2 aircraft • J-31 will RTB immediately if radio contact is lost • 3-4 such flights

  8. SGP Cloud and Land Surface Interaction Campaign (CLASIC) Planned for Summer 2007, Proposal submitted July 14, 2005 Steering Committee: Mark Miller (BNL), Greg McFarquhar (University of Illinois), Larry Berg (PNNL), Qilong Min (SUNY Albany), Beat Schmid (BAER Inst.), Dave Turner (PNNL) Platform Scientist, suggested potential payload within budget constraints

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