U.S. Department of EnergyOffice of Scientific and Technical Information
MARCUS Ice Nucleating Particle Measurements (revised 7/2020)
Abstract
These data list ice nucleating particle (INP) number concentrations active in the immersion freezing mode. Aerosol filters were collected during 4 voyages of the Aurora Australis vessel from 02 November 2017 to 22 March 2018, as part of the Measurements of Aerosols, Radiation and Clouds over the Southern Ocean (MARCUS) study. These voyages transected the Southern Ocean from Hobart, Tasmania to four Australian Antarctic Division stations, including three in Antarctica. Collections were made over alternating periods of 24 and 48 hours using open-faced polycarbonate filters that were approximately 18 m MSL, sited near the AOS trailer and other AMF measurements. The volume of air filtered ranged from 19000 to 38000 standard liters per filter sample. Filters were stored and returned frozen to Colorado State University (CSU), where immersion freezing measurements over a range from 0 to -28 degC were made using the CSU Ice Spectrometer (IS). Collected particles from each filter were resuspended in filtered, deionized water, and then dispensed into the IS and cooled to obtain cumulative INP temperature spectra. Aliquots of suspensions from selected samples were also heat treated (95 degC for 20 min) to denature and deactivate biological INPs, and digested in 10% H2O2 at 95 degCmore »
- Authors:
-
- ORNL
- Publication Date:
- 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; Colorado State University Ice Spectrometer,Ice nucleating particle concentrations, ARM, DOE.
- OSTI Identifier:
- 1638968
- DOI:
- https://doi.org/10.5439/1638968
Citation Formats
DeMott, Paul, Hill, Thomas, and McFarquhar, Greg. MARCUS Ice Nucleating Particle Measurements (revised 7/2020). United States: N. p., 2020.
Web. doi:10.5439/1638968.
DeMott, Paul, Hill, Thomas, & McFarquhar, Greg. MARCUS Ice Nucleating Particle Measurements (revised 7/2020). United States. doi:https://doi.org/10.5439/1638968
DeMott, Paul, Hill, Thomas, and McFarquhar, Greg. 2020.
"MARCUS Ice Nucleating Particle Measurements (revised 7/2020)". United States. doi:https://doi.org/10.5439/1638968. https://www.osti.gov/servlets/purl/1638968. Pub date:Wed Jul 22 04:00:00 UTC 2020
@article{osti_1638968,
title = {MARCUS Ice Nucleating Particle Measurements (revised 7/2020)},
author = {DeMott, Paul and Hill, Thomas and McFarquhar, Greg},
abstractNote = {These data list ice nucleating particle (INP) number concentrations active in the immersion freezing mode. Aerosol filters were collected during 4 voyages of the Aurora Australis vessel from 02 November 2017 to 22 March 2018, as part of the Measurements of Aerosols, Radiation and Clouds over the Southern Ocean (MARCUS) study. These voyages transected the Southern Ocean from Hobart, Tasmania to four Australian Antarctic Division stations, including three in Antarctica. Collections were made over alternating periods of 24 and 48 hours using open-faced polycarbonate filters that were approximately 18 m MSL, sited near the AOS trailer and other AMF measurements. The volume of air filtered ranged from 19000 to 38000 standard liters per filter sample. Filters were stored and returned frozen to Colorado State University (CSU), where immersion freezing measurements over a range from 0 to -28 degC were made using the CSU Ice Spectrometer (IS). Collected particles from each filter were resuspended in filtered, deionized water, and then dispensed into the IS and cooled to obtain cumulative INP temperature spectra. Aliquots of suspensions from selected samples were also heat treated (95 degC for 20 min) to denature and deactivate biological INPs, and digested in 10% H2O2 at 95 degC under UV-B for 20 min to remove all organic carbon INPs, prior to measurement using the IS.},
doi = {10.5439/1638968},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jul 22 04:00:00 UTC 2020},
month = {Wed Jul 22 04:00:00 UTC 2020}
}