ARCSS140
Cloud-Radiation Feedback: Boundary Layer Cloud Microphysical Properties and Processes
Paul Lawson
Cloud-Radiation Feedback: Boundary Layer Cloud Microphysical Properties and Processes
2006-02-10
Boulder, Colorado USA
NSIDC: National Snow and Ice Data Center
http://nsidc.org/data/arcss140.html
Investigator
Paul
Lawson
SPEC Incorporated
3022 Sterling Circle Suite 200
Boulder
CO
80301
USA
Technical Contact
NSIDC
User Services
nsidc@nsidc.org
1 303 492-6199 x
1 303 492-2468 x
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder
CO
80309-0449
USA
EARTH SCIENCE
Atmosphere
Aerosols
Aerosol Particle Properties
EARTH SCIENCE
Atmosphere
Air Quality
Particulates
EARTH SCIENCE
Atmosphere
Clouds
Cloud Liquid Water/Ice
Climatology/Meteorology/Atmosphere
arcss140
ARCSS Data Coordination Center
Arctic
Beaufort Sea
Cloud Liquid Water
Ice Scattering
NSIDC > National Snow and Ice Data Center
OPP-0084314
SHEBA
2DC
2D Cloud Probe
CPI
Cloud Particle Imager
FSSP
Forword Scattering Spectrometer Probe
PMS 2D-C PROBE
Particle Measuring Systems 2D-C Probe
PMS 2D-P PROBE
Particle Measuring Systems 2D-P Probe
AIRCRAFT
1998-05-04
1998-07-29
75.4442
78.6105
-167.2124
-160.6095
GEOGRAPHIC REGION
ARCTIC
OCEAN
ARCTIC OCEAN
OCEAN
ARCTIC OCEAN
BEAUFORT SEA
ARCSS/OAII/SHEBA
Arctic System Science/OAII/Surface Heat Budget of the Arctic Ocean
FIRE/ACE
First ISCCP Regional Experiment Arctic Cloud Experiment
SHEBA
Surface Heat Budget of the Arctic Ocean
Please see the detailed documentation provided by the investigators, 'Final_Report.pdf' and 'SPEC Microphysical Data Archive Format.pdf.'
English
NSIDC
National Snow and Ice Data Center
http://nsidc.org
Data Center Contact
NSIDC
User Services
nsidc@nsidc.org
1 303 492-6199
1 303 492-2468
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder
CO
80309-0449
USA
CD-ROM
600 MB
ASCII Text
CD-ROM
600 MB
Microsoft Word
CD-ROM
600 MB
PDF
CD-ROM
600 MB
PNG
Lawson, R. P., B. A. Baker, C. G. Schmitt and T. L. Jensen. 2001. An overview of microphysical properties of Arctic clouds observed in May and July during FIRE.ACE. Journal of Geophysical Research 106, 14, 989-15,014.
This data set includes Surface Heat Budget of the Arctic (SHEBA) cloud microphysical data collected onboard the National Center for Atmospheric Research (NCAR) C-130 aircraft. This work focused on improving the quality of algorithms used to process in situ measurements collected during First International Satellite Cloud Climatology Project (ISCCP) Regional Experiment, Arctic Cloud Experiment (SHEBA/FIRE, ACE) and applying the results to the analysis of five case studies. Such research was deemed valuable as a result of weaknesses and inconsistencies in the existing C-130 data set that were pointed out in a SHEBA workshop held in 2000. Data has been reprocessed by SPEC, Inc. to improve quality and add value to the measurements. Investigators selected five research days that were considered to be high priority by the SHEBA science team: 4 May, 8 July, 18 July, 28 July, and 29 July of 1998.
New software algorithms and procedures were developed to objectively combine the measurements from the NCAR C-130 forward-scattering spectrometer probe (FSSP), Commonwealth Scientific and Industrial Research Organization (CSIRO)-King probe, 260X probe, 2D-C probe, and 2D-P probe which were made by Particle Measuring Systems, Inc. (PMS) along with a Cloud Particle Imager (CPI) made by SPEC, Inc. Prior to this work, 2D-probe data had not been analyzed quantitatively; the 260X probe data were used instead. It was found that using the 260X data resulted in severe underestimation of ice water content (IWC), radar reflectivity and effective particle size in most mixed-phase regions of cloud.
The software developed for this research performed several functions. CPI data were separated into water drops and ice crystals in mixed-phase clouds. Ice crystals were classified according to crystal type. An improved algorithm was developed to calculate IWC based on digitization and re-analysis of ice crystal and melted-drop images. The new algorithms were applied to the calculation of IWC, extinction coefficient, radar reflectivity, and ice particle effective size.
VIEW PROJECT HOME PAGE
http://sheba.apl.washington.edu
SHEBA Website
CEOS IDN DIF
9.7
2006-02-10
2012-06-04
corrected distribution format