CACTI ARM Mobile Facility (AMF) Measurements of Ice Nucleating Particles
The dataset comprises measures, using Colorado State University's Ice Spectrometer (IS, an immersion freezing device with a range from 0°C down to -26 to -29°C) of atmosperic ice nucleating particle (INP) concentrations taken on ARM's Mobile Facility (AMF-1) Aerosol Observing System, near...
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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)
2021
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Online Access: | https://dx.doi.org/10.5439/1607786 https://www.osti.gov/servlets/purl/1607786/ |
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ftdatacite:10.5439/1607786 2023-05-15T17:41:46+02:00 CACTI ARM Mobile Facility (AMF) Measurements of Ice Nucleating Particles DeMott, Paul 2021 https://dx.doi.org/10.5439/1607786 https://www.osti.gov/servlets/purl/1607786/ en eng 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) 54 Environmental Sciences Colorado State University Ice Spectrometer,Ice nucleating particle concentration, ARM, DOE. dataset Numeric Data Dataset 2021 ftdatacite https://doi.org/10.5439/1607786 2021-11-05T12:55:41Z The dataset comprises measures, using Colorado State University's Ice Spectrometer (IS, an immersion freezing device with a range from 0°C down to -26 to -29°C) of atmosperic ice nucleating particle (INP) concentrations taken on ARM's Mobile Facility (AMF-1) Aerosol Observing System, near Villa Yacanto in central Argentina, during the Cloud, Aerosol, and Complex Terrain Interactions (CACTI) Experiment. A filter sampler was mounted on the AOS trailer (2 m below the AOS inlet). Single-use filter units open to the atmosphere fitted with pre-cleaned and pre-sterilized, 47-mm dia. Nuclepore polycarbonate filters were used. Filters were typically drawn for an 8-hour period, totaling 6000 liters sampled on average. After collection, filters were stored at -20°C until processed. Initial processing to obtain spectra of INP number concentration active via the immersion freezing mechanism versus temperature was conducted using CSU's IS instrument (McCluskey et al., 2018). For measurment of INPs, collected aerosol particles were re-suspended in 7-8 mL of 0.1 µm-filtered deionized (DI) water. Aliquots of each suspension, and serial dilutions, were dispensed into trays which were fit into aluminum blocks in the IS. Samples are cooled at 0.33°C min-1 and the freezing temperatures of wells recorded automatically. Cumulative INP concentrations were determined by first calculating the INPs per mL of suspension based on Vali (1971) and then converting to concentration per standard liter of air using the proportion of the total liquid sample dispensed and the air sample volumes. An aliquot of suspension fro selected samples were also heat treated (95°C for 20 min) to denature and deactivate biological INPs, and another aliquot digested in 10% H2O2 at 95°C under UV-B to remove all organic carbon INPs. McCluskey, C. S., J. Ovadnevaite, M. Rinaldi, J. Atkinson, F. Belosi, D. Ceburnis, S. Marullo, T. C. J. Hill, U. Lohmann, Z. A. Kanji, C. O’Dowd, S. M. Kreidenweis, P. J. DeMott, 2018: Marine and Terrestrial Organic Ice Nucleating Particles in Pristine Marine to Continentally-Influenced Northeast Atlantic Air Masses, Journal of Geophysical Research: Atmospheres, 123, 6196–6212, https://doi.org/10.1029/2017JD028033. Vali, G., 1971: Quantitative evaluation of experimental results on the heterogeneous freezing nucleation of supercooled liquids. J. Atmos. Sci., 28, 402–409. Dataset Northeast Atlantic DataCite Metadata Store (German National Library of Science and Technology) Argentina Atkinson ENVELOPE(-85.483,-85.483,-78.650,-78.650) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
54 Environmental Sciences Colorado State University Ice Spectrometer,Ice nucleating particle concentration, ARM, DOE. |
spellingShingle |
54 Environmental Sciences Colorado State University Ice Spectrometer,Ice nucleating particle concentration, ARM, DOE. DeMott, Paul CACTI ARM Mobile Facility (AMF) Measurements of Ice Nucleating Particles |
topic_facet |
54 Environmental Sciences Colorado State University Ice Spectrometer,Ice nucleating particle concentration, ARM, DOE. |
description |
The dataset comprises measures, using Colorado State University's Ice Spectrometer (IS, an immersion freezing device with a range from 0°C down to -26 to -29°C) of atmosperic ice nucleating particle (INP) concentrations taken on ARM's Mobile Facility (AMF-1) Aerosol Observing System, near Villa Yacanto in central Argentina, during the Cloud, Aerosol, and Complex Terrain Interactions (CACTI) Experiment. A filter sampler was mounted on the AOS trailer (2 m below the AOS inlet). Single-use filter units open to the atmosphere fitted with pre-cleaned and pre-sterilized, 47-mm dia. Nuclepore polycarbonate filters were used. Filters were typically drawn for an 8-hour period, totaling 6000 liters sampled on average. After collection, filters were stored at -20°C until processed. Initial processing to obtain spectra of INP number concentration active via the immersion freezing mechanism versus temperature was conducted using CSU's IS instrument (McCluskey et al., 2018). For measurment of INPs, collected aerosol particles were re-suspended in 7-8 mL of 0.1 µm-filtered deionized (DI) water. Aliquots of each suspension, and serial dilutions, were dispensed into trays which were fit into aluminum blocks in the IS. Samples are cooled at 0.33°C min-1 and the freezing temperatures of wells recorded automatically. Cumulative INP concentrations were determined by first calculating the INPs per mL of suspension based on Vali (1971) and then converting to concentration per standard liter of air using the proportion of the total liquid sample dispensed and the air sample volumes. An aliquot of suspension fro selected samples were also heat treated (95°C for 20 min) to denature and deactivate biological INPs, and another aliquot digested in 10% H2O2 at 95°C under UV-B to remove all organic carbon INPs. McCluskey, C. S., J. Ovadnevaite, M. Rinaldi, J. Atkinson, F. Belosi, D. Ceburnis, S. Marullo, T. C. J. Hill, U. Lohmann, Z. A. Kanji, C. O’Dowd, S. M. Kreidenweis, P. J. DeMott, 2018: Marine and Terrestrial Organic Ice Nucleating Particles in Pristine Marine to Continentally-Influenced Northeast Atlantic Air Masses, Journal of Geophysical Research: Atmospheres, 123, 6196–6212, https://doi.org/10.1029/2017JD028033. Vali, G., 1971: Quantitative evaluation of experimental results on the heterogeneous freezing nucleation of supercooled liquids. J. Atmos. Sci., 28, 402–409. |
format |
Dataset |
author |
DeMott, Paul |
author_facet |
DeMott, Paul |
author_sort |
DeMott, Paul |
title |
CACTI ARM Mobile Facility (AMF) Measurements of Ice Nucleating Particles |
title_short |
CACTI ARM Mobile Facility (AMF) Measurements of Ice Nucleating Particles |
title_full |
CACTI ARM Mobile Facility (AMF) Measurements of Ice Nucleating Particles |
title_fullStr |
CACTI ARM Mobile Facility (AMF) Measurements of Ice Nucleating Particles |
title_full_unstemmed |
CACTI ARM Mobile Facility (AMF) Measurements of Ice Nucleating Particles |
title_sort |
cacti arm mobile facility (amf) measurements of ice nucleating particles |
publisher |
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) |
publishDate |
2021 |
url |
https://dx.doi.org/10.5439/1607786 https://www.osti.gov/servlets/purl/1607786/ |
long_lat |
ENVELOPE(-85.483,-85.483,-78.650,-78.650) |
geographic |
Argentina Atkinson |
geographic_facet |
Argentina Atkinson |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_doi |
https://doi.org/10.5439/1607786 |
_version_ |
1766143504334979072 |