U.S. Department of EnergyOffice of Scientific and Technical Information
EPCAPE-PT-LANL Measurements: Cloud Condensation Nuclei Counter
Abstract
Coastal cities offer a unique environment for studying aerosol-cloud interactions and the effects of urban emissions on cloud properties. As part of the Eastern Pacific Cloud Aerosol Precipitation Experiment (EPCAPE), the Partitioning Thrust by Los Alamos National Laboratory (EPCAPE-PT-LANL) was conducted. Our campaign focused on measuring the optical and chemical properties of aerosols and their interactions within marine stratocumulus clouds in La Jolla, California. EPCAPE-PT-LANL enhances the primary goals of EPCAPE through innovative observations of vapor-phase transitions between aerosols and cloud droplets, the impact of black carbon on aerosol-cloud dynamics, and the effects of cloud processing on aerosol optical properties. Instrument: Cloud Condensation Nuclei Counter, single column (Droplet Measurements Technology)Files: data_10sec_CCNc.csv, data_10min_CCNc.csvHeader:- SuperSaturation[unitless]: The level of supersaturation, expressed as a unitless percentage, at which cloud condensation nuclei (CCN) activity is measured.- NumberConcentration[/cm3]: Number concentration of particles acting as CCN at the baseline supersaturation level, measured in particles per cubic centimeter.- NumberConcentration_SS2[/cm3]: Number concentration of particles acting as CCN at a supersaturation level of 0.2%, measured in particles per cubic centimeter.- NumberConcentration_SS4[/cm3]: Number concentration of particles acting as CCN at a supersaturation level of 0.4%, measured in particles per cubic centimeter.- QualityControl_Flag[bool]: A boolean flag indicating whether the data point passed qualitymore »
- Publication Date:
- Other Number(s):
- ARM0865
- DOE Contract Number:
- AC05-00OR22725
- Research Org.:
- Atmospheric Radiation Measurement (ARM) Archive, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (US); ARM Data Center, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- Collaborations:
- PNNL, BNL, ANL, ORNL
- Subject:
- 54 ENVIRONMENTAL SCIENCES; Cloud condensation nuclei at supersaturation
- OSTI Identifier:
- 2376898
- DOI:
- https://doi.org/10.5439/2376898
Citation Formats
Gorkowski, Kyle, Lee, James, Shawon, Abu Sayeed Md, Farley, Ryan, Franco, Nevil, Benedict, Katherine, Dueby, Manvendra, and Aiken, Allison. EPCAPE-PT-LANL Measurements: Cloud Condensation Nuclei Counter. United States: N. p., 2024.
Web. doi:10.5439/2376898.
Gorkowski, Kyle, Lee, James, Shawon, Abu Sayeed Md, Farley, Ryan, Franco, Nevil, Benedict, Katherine, Dueby, Manvendra, & Aiken, Allison. EPCAPE-PT-LANL Measurements: Cloud Condensation Nuclei Counter. United States. doi:https://doi.org/10.5439/2376898
Gorkowski, Kyle, Lee, James, Shawon, Abu Sayeed Md, Farley, Ryan, Franco, Nevil, Benedict, Katherine, Dueby, Manvendra, and Aiken, Allison. 2024.
"EPCAPE-PT-LANL Measurements: Cloud Condensation Nuclei Counter". United States. doi:https://doi.org/10.5439/2376898. https://www.osti.gov/servlets/purl/2376898. Pub date:Mon Jun 24 04:00:00 UTC 2024
@article{osti_2376898,
title = {EPCAPE-PT-LANL Measurements: Cloud Condensation Nuclei Counter},
author = {Gorkowski, Kyle and Lee, James and Shawon, Abu Sayeed Md and Farley, Ryan and Franco, Nevil and Benedict, Katherine and Dueby, Manvendra and Aiken, Allison},
abstractNote = {Coastal cities offer a unique environment for studying aerosol-cloud interactions and the effects of urban emissions on cloud properties. As part of the Eastern Pacific Cloud Aerosol Precipitation Experiment (EPCAPE), the Partitioning Thrust by Los Alamos National Laboratory (EPCAPE-PT-LANL) was conducted. Our campaign focused on measuring the optical and chemical properties of aerosols and their interactions within marine stratocumulus clouds in La Jolla, California. EPCAPE-PT-LANL enhances the primary goals of EPCAPE through innovative observations of vapor-phase transitions between aerosols and cloud droplets, the impact of black carbon on aerosol-cloud dynamics, and the effects of cloud processing on aerosol optical properties. Instrument: Cloud Condensation Nuclei Counter, single column (Droplet Measurements Technology)Files: data_10sec_CCNc.csv, data_10min_CCNc.csvHeader:- SuperSaturation[unitless]: The level of supersaturation, expressed as a unitless percentage, at which cloud condensation nuclei (CCN) activity is measured.- NumberConcentration[/cm3]: Number concentration of particles acting as CCN at the baseline supersaturation level, measured in particles per cubic centimeter.- NumberConcentration_SS2[/cm3]: Number concentration of particles acting as CCN at a supersaturation level of 0.2%, measured in particles per cubic centimeter.- NumberConcentration_SS4[/cm3]: Number concentration of particles acting as CCN at a supersaturation level of 0.4%, measured in particles per cubic centimeter.- QualityControl_Flag[bool]: A boolean flag indicating whether the data point passed quality control checks.- CVI_Flag[bool]: A boolean flag indicating whether the Counterflow Virtual Impactor (CVI) was active (true) or inactive (false) during the measurement.},
doi = {10.5439/2376898},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jun 24 04:00:00 UTC 2024},
month = {Mon Jun 24 04:00:00 UTC 2024}
}