COMBLE Ice Nucleating Particle Measurements
These data list ice nucleating particle (INP) number concentrations active in the immersion freezing mode per large volumes of air collected using filters, sampled atop the AOS trailer, part of AMF1, sited at Nordmela Harbor, Andøya Island, Norway, from 01 December 2019 to 26 May 2020, as part of th...
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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)
2019
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Online Access: | https://dx.doi.org/10.5439/1755091 https://www.osti.gov/servlets/purl/1755091/ |
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ftdatacite:10.5439/1755091 2023-05-15T13:25:45+02:00 COMBLE Ice Nucleating Particle Measurements DeMott, Paul Hill, Thomas 2019 https://dx.doi.org/10.5439/1755091 https://www.osti.gov/servlets/purl/1755091/ 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 2019 ftdatacite https://doi.org/10.5439/1755091 2021-11-05T12:55:41Z These data list ice nucleating particle (INP) number concentrations active in the immersion freezing mode per large volumes of air collected using filters, sampled atop the AOS trailer, part of AMF1, sited at Nordmela Harbor, Andøya Island, Norway, from 01 December 2019 to 26 May 2020, as part of the Cold-air Outbreaks in the Marine Boundary Layer Experiment (COMBLE). Collections were made over periods of 6 to 74 hours (average 34 h and 42 m3 filtered), with periods tailored to integrate cold-air outbreaks or flanking periods of non-cold-air outbreak air. We used open-faced polycarbonate filters that were sampled at a height of 4 m AGL on the AOS trailer (6 m below its inlet), 6-8 m ASL and 30 m inland from the harbor wall, and near the other AMF measurements. Filters were stored and returned frozen to Colorado State University (CSU), where immersion freezing measurements over a range from 0 to typically -28°C were made using the CSU Ice Spectrometer (IS). This first entailed the removal of particles (agitation of filter in 0.1 µm filtered ultrapure water) from filters to create aliquot suspensions that were subdivided (and frozen) for subsequent analyses. One portion was used to obtain a basic temperature spectrum of INP number concentrations on the basis of the freezing of an array of smaller liquid aliquots during cooling, and relation of the frozen fraction to the total air volume sampled. A subset of other portions of the original suspension aliquots were heat treated (95°C for 20 min) to denature biological INPs (a reduction in concentrations reveals the proportion of all INPs that were likely of biological origin, such as microbial or proteinaceous) and digested in 10% H2O2 at 95°C under UV-B illumination to remove all organic carbon INPs; the residual is presumed to be inorganic (likely mineral) INPs. Other samples have been archived frozen for future potential testing of INP source compositions and aerosol chemical and biological source attribution. Dataset Andøya DataCite Metadata Store (German National Library of Science and Technology) Andøya ENVELOPE(13.982,13.982,68.185,68.185) Nordmela ENVELOPE(15.675,15.675,69.134,69.134) Norway |
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 Hill, Thomas COMBLE Ice Nucleating Particle Measurements |
topic_facet |
54 Environmental Sciences Colorado State University Ice Spectrometer,Ice nucleating particle concentration, ARM, DOE. |
description |
These data list ice nucleating particle (INP) number concentrations active in the immersion freezing mode per large volumes of air collected using filters, sampled atop the AOS trailer, part of AMF1, sited at Nordmela Harbor, Andøya Island, Norway, from 01 December 2019 to 26 May 2020, as part of the Cold-air Outbreaks in the Marine Boundary Layer Experiment (COMBLE). Collections were made over periods of 6 to 74 hours (average 34 h and 42 m3 filtered), with periods tailored to integrate cold-air outbreaks or flanking periods of non-cold-air outbreak air. We used open-faced polycarbonate filters that were sampled at a height of 4 m AGL on the AOS trailer (6 m below its inlet), 6-8 m ASL and 30 m inland from the harbor wall, and near the other AMF measurements. Filters were stored and returned frozen to Colorado State University (CSU), where immersion freezing measurements over a range from 0 to typically -28°C were made using the CSU Ice Spectrometer (IS). This first entailed the removal of particles (agitation of filter in 0.1 µm filtered ultrapure water) from filters to create aliquot suspensions that were subdivided (and frozen) for subsequent analyses. One portion was used to obtain a basic temperature spectrum of INP number concentrations on the basis of the freezing of an array of smaller liquid aliquots during cooling, and relation of the frozen fraction to the total air volume sampled. A subset of other portions of the original suspension aliquots were heat treated (95°C for 20 min) to denature biological INPs (a reduction in concentrations reveals the proportion of all INPs that were likely of biological origin, such as microbial or proteinaceous) and digested in 10% H2O2 at 95°C under UV-B illumination to remove all organic carbon INPs; the residual is presumed to be inorganic (likely mineral) INPs. Other samples have been archived frozen for future potential testing of INP source compositions and aerosol chemical and biological source attribution. |
format |
Dataset |
author |
DeMott, Paul Hill, Thomas |
author_facet |
DeMott, Paul Hill, Thomas |
author_sort |
DeMott, Paul |
title |
COMBLE Ice Nucleating Particle Measurements |
title_short |
COMBLE Ice Nucleating Particle Measurements |
title_full |
COMBLE Ice Nucleating Particle Measurements |
title_fullStr |
COMBLE Ice Nucleating Particle Measurements |
title_full_unstemmed |
COMBLE Ice Nucleating Particle Measurements |
title_sort |
comble ice nucleating particle measurements |
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 |
2019 |
url |
https://dx.doi.org/10.5439/1755091 https://www.osti.gov/servlets/purl/1755091/ |
long_lat |
ENVELOPE(13.982,13.982,68.185,68.185) ENVELOPE(15.675,15.675,69.134,69.134) |
geographic |
Andøya Nordmela Norway |
geographic_facet |
Andøya Nordmela Norway |
genre |
Andøya |
genre_facet |
Andøya |
op_doi |
https://doi.org/10.5439/1755091 |
_version_ |
1766387731459473408 |