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Ice nucleating particle concentrations measured by the PNNL-CFDC during the AGINSGP field experiment

Overview:

Real-time, immersion mode ambient ice nucleating particle (INP) concentrations were measured at ARM’s Southern Great Plains (SGP) site during the AGINSGP field experiment using a continuous flow diffusion chamber (CFDC) from Pacific Northwest National Laboratory (PNNL). The PNNL-CFDC is an ice-thermal gradient diffusion chamber that optically detects the freezing of single aerosol particles (Kulkarni et al. 2020). The instrument was located in the guest instrument facility (GIF) and measured INP concentrations from April 8th to April 29th.

Air was drawn into the GIF through custom aluminum stack inlets (6” inner diameter) attached vertically to the outer GIF wall and the GIF outside platform. A blower pulled air through the stacks at a velocity of 1 m/s. Aerosol instruments subsampled via wall ports, through either 3/8” or 1/4" copper lines, depending on sample flow of the instrument.

Kulkarni, G., Hiranuma, N., Möhler, O., Höhler, K., China, S., Cziczo, D. J., & DeMott, P. J. (2020). A new method for operating a continuous-flow diffusion chamber to investigate immersion freezing: Assessment and performance study. Atmospheric Measurement Techniques, 13(12), 6631–6643. https://doi.org/10.5194/amt-13-6631-2020.

Metadata Creator:
Name: Gavin Cornwell
Email: gavin.cornwell@pnnl.gov Phone: 5093756364
Street: 902 Battelle Blvd City: Richland
State: WA Postal: 99354
Contact Info:
Name: Gourihar Kulkarni
Email: gourihar.kulkarni@pnnl.gov Phone: (509) 375-3729
Street: City: Richland
State: WA Postal: 99352
Investigator(s): Gourihar Kulkarni
isabelle steinke
Related Publications/References:
Kulkarni, G., Hiranuma, N., Möhler, O., Höhler, K., China, S., Cziczo, D. J., & DeMott, P. J. (2020). A new method for operating a continuous-flow diffusion chamber to investigate immersion freezing: Assessment and performance study. Atmospheric Measurement Techniques, 13(12), 6631-6643. https://doi.org/10.5194/amt-13-6631-2020.
Data Citation: https://doi.org/10.5439/1899596
Data Format: .csv
File Naming Convention: INP concentrations are listed for each CFDC icing period. Files are named YYYYMMDD(a/b).csv.
Abstract:

Real-time, immersion mode ambient ice nucleating particle (INP) concentrations were measured at ARM’s Southern Great Plains (SGP) site during the AGINSGP field experiment using a continuous flow diffusion chamber (CFDC) from Pacific Northwest National Laboratory (PNNL). The PNNL-CFDC is an ice-thermal gradient diffusion chamber that optically detects the freezing of single aerosol particles (Kulkarni et al. 2020). The instrument was located in the guest instrument facility (GIF) and measured INP concentrations from April 8th to April 29th.

Air was drawn into the GIF through custom aluminum stack inlets (6” inner diameter) attached vertically to the outer GIF wall and the GIF outside platform. A blower pulled air through the stacks at a velocity of 1 m/s. Aerosol instruments subsampled via wall ports, through either 3/8” or 1/4" copper lines, depending on sample flow of the instrument.

Kulkarni, G., Hiranuma, N., Möhler, O., Höhler, K., China, S., Cziczo, D. J., & DeMott, P. J. (2020). A new method for operating a continuous-flow diffusion chamber to investigate immersion freezing: Assessment and performance study. Atmospheric Measurement Techniques, 13(12), 6631–6643. https://doi.org/10.5194/amt-13-6631-2020.
Purpose:

Data were collected in support of the AGINSGP field campaign, with the ultimate goal to improve the representation of INPs in earth system models.
Arm Sites: sgp
Content Time Range: Begin: 2022.04.08 End: 2022.04.29
Instrument(s): Pacific Northwest National Laboratory continuous flow diffusion chamber
Data Type: Agricultural Ice Nuclei at SGP
Scientific Measurements(s):
Measurement name Variables
Real-time INP concentrations
Stratum Keyword(s):
INPs
Data Quality:
Attribute Accuracy: No formal attribute accuracy tests were conducted
Positional Accuracy: No formal positional accuracy tests were conducted
Consistency and Completeness Report: Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
Access Restriction: No access constraints are associated with this data.
Use Restrictions: No use constraints are associated with this data.
Distribution Info:
Organization Name: ARM Archive User Services
Email: armarchive[at]ornl.gov Phone: 1-888-ARM-DATA
Street: Oak Ridge National Laboratory City: Oak Ridge
State: Tennessee Postal: 37831-6290