Entry_ID: ARCSS140
Entry_Title: Cloud-Radiation Feedback: Boundary Layer Cloud Microphysical Properties and Processes
Group: Data_Set_Citation
   Dataset_Creator: Paul Lawson
   Dataset_Title: Cloud-Radiation Feedback: Boundary Layer Cloud Microphysical Properties and Processes
   Dataset_Release_Date: 2006-02-10
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NSIDC: National Snow and Ice Data Center
   Online_Resource: http://nsidc.org/data/arcss140.html
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Paul
   Last_Name: Lawson
   Group: Contact_Address
      Address: SPEC Incorporated
      Address: 3022 Sterling Circle Suite 200
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80301
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Technical Contact
   First_Name: NSIDC
   Last_Name: User Services
   Email: nsidc@nsidc.org
   Phone: 1 303 492-6199 x
   Fax: 1 303  492-2468 x
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: CIRES, 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309-0449
      Country: USA
   End_Group
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Atmosphere
   Term: Aerosols
   Variable_Level_1: Aerosol Particle Properties
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Atmosphere
   Term: Air Quality
   Variable_Level_1: Particulates
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Atmosphere
   Term: Clouds
   Variable_Level_1: Cloud Liquid Water/Ice
End_Group
ISO_Topic_Category: Climatology/Meteorology/Atmosphere
Keyword: arcss140
Keyword: ARCSS Data Coordination Center
Keyword: Arctic
Keyword: Beaufort Sea
Keyword: Cloud Liquid Water
Keyword: Ice Scattering
Keyword: NSIDC > National Snow and Ice Data Center
Keyword: OPP-0084314
Keyword: SHEBA
Sensor_Name: 2DC > 2D Cloud Probe
Sensor_Name: CPI > Cloud Particle Imager
Sensor_Name: FSSP > Forword Scattering Spectrometer Probe
Sensor_Name: PMS 2D-C PROBE > Particle Measuring Systems 2D-C Probe
Sensor_Name: PMS 2D-P PROBE > Particle Measuring Systems 2D-P Probe
Source_Name: AIRCRAFT
Group: Temporal_Coverage
   Start_Date: 1998-05-04
   Stop_Date: 1998-07-29
End_Group
Group: Spatial_Coverage
   Southernmost_Latitude: 75.4442
   Northernmost_Latitude: 78.6105
   Westernmost_Longitude: -167.2124
   Easternmost_Longitude: -160.6095
End_Group
Group: Location
   Location_Category: GEOGRAPHIC REGION
   Location_Type: ARCTIC
End_Group
Group: Location
   Location_Category: OCEAN
   Location_Type: ARCTIC OCEAN
End_Group
Group: Location
   Location_Category: OCEAN
   Location_Type: ARCTIC OCEAN
   Location_Subregion1: BEAUFORT SEA
End_Group
Project: ARCSS/OAII/SHEBA > Arctic System Science/OAII/Surface Heat Budget of the Arctic Ocean
Project: FIRE/ACE > First ISCCP Regional Experiment Arctic Cloud Experiment
Project: SHEBA > Surface Heat Budget of the Arctic Ocean
Group: Quality

   Please see the detailed documentation provided by the investigators, 
   'Final_Report.pdf' and 'SPEC Microphysical Data Archive Format.pdf.'

End_Group
Data_Set_Language: English
Group: Data_Center
   Data_Center_Name: NSIDC > National Snow and Ice Data Center
   Data_Center_URL: http://nsidc.org
   Group: Personnel
      Role: Data Center Contact
      First_Name: NSIDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 
      Fax: 1 303  492-2468 
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Distribution
   Distribution_Media: CD-ROM
   Distribution_Size: 600 MB
   Distribution_Format: ASCII Text
End_Group
Group: Distribution
   Distribution_Media: CD-ROM
   Distribution_Size: 600 MB
   Distribution_Format: Microsoft Word
End_Group
Group: Distribution
   Distribution_Media: CD-ROM
   Distribution_Size: 600 MB
   Distribution_Format: PDF
End_Group
Group: Distribution
   Distribution_Media: CD-ROM
   Distribution_Size: 600 MB
   Distribution_Format: PNG
End_Group
Group: Reference

   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.

End_Group
Group: Summary

   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.

End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://sheba.apl.washington.edu
   Description: SHEBA Website
End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2006-02-10
Last_DIF_Revision_Date: 2012-06-04
DIF_Revision_History: corrected distribution format