CIRPAS Twin Otter

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 36.60N, 97.48E.
• 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