Download - Jeff Stith, Andrew Gettelman
Jeff Stith, Andrew Gettelman
NCAR is sponsored by the National Science Foundation
Southern Ocean Studies: NCAR Measurement capabilities and integrating the measurements with the Community
Earth System Model (CESM)
NSF C130: heavy-lift research aircraft
• 10 + Hours Endurance• Typical payload 15,000 lb
• Range 3100nmi• Altitude 26,000 ft
Gulfstream V: A Platform for Global Scale Measurements
• Long-Range (up to ~5000 n miles )
• High Altitude (up to 51,000 feet)• Up to ~6000 lb payload• Up to 12 hours endurance (10 hours typical)• Six under-wing hardpoints• Up and Down (2) Co-Aligned 20 inch optical
viewports• Ample inlets and fuselage hard points
HIAPER Pole-to-Pole (HIPPO) : Global scale research in different seasons
Flight Hours:86 (January 2009)90 (October 2009)85 (March 2010)97 (June 2011)103 (August 2011)
Total Flights: 64Distance : 171,000 milesVertical Profiles: 461
3VCPI
Instrument Issues
2DC (fast) No small particles
2DP Only C130-possible revision
3VCPI (2DS+CPI) Effects of tube still under study
SID II-H Small sample volume. Performance under study, probably best for ci
CDP Small sample volume. Limited to droplets/small ice
FSSP (un-shrouded) Similar to CDP
UHSAS Continuous accumulation mode aerosols
CVI, Aerosol Mass Spec, small particle mobility analysis ,
Special request
HOLODEC II Promising in development
HIAPER Cloud Radar
Instrument Description
HIAPER Cloud radar W-band polarmetric radar (scanning)
HSRL High Spectral Resolution calibrated aerosol lidar (extinction, cross section, depolarization)
Wyoming radar and lidar Cloud radar and lidar for C130/ King Air
Dropsondes Both aircraft
Ground-based S-Pol, Sounding facilities, surface flux, coming: water vapor DIAL
Combination of Radar/lidar with in-situ measurements is very powerful!
Airborne instruments
www.eol.ucar.edu/instrumentation www.eol.ucar.edu/deployment/request-info
6
Single particle
Holodec II
1 particle in beam at a time
20 cc
30-100 m
Reconstructed image
HOLODEC II, a collaborative effort between Michigan Technological University and NCAR/EOL
Portions from: Fugal, Beals, Schlenczek, Shaw, Spuler, and Stith, 2012: Comparisons of size distributions of ice particles measured with imaging and holographic airborne instruments. International Conference on Clouds and Precipitation, Leipzig, 2012.
12/4/2013
Beals et al, (2012)Fugal et al., (2012)
New Measurements with Holodec II
CESM Southern Ocean HIPPO –domain results overlaid with in situ measurements
Preliminary Results
In situ measurements “fit” into CESM model grid box
Preliminary Results