Size-resolved measurements of ice-nucleating particles at six locations in North America and one in Europe
Detailed information on the size of ice-nucleating particles (INPs) may be useful in source identification, modeling their transport in the atmosphere to improve climate predictions, and determining how effectively or ineffectively instrumentation used for quantifying INPs in the atmosphere captures...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2016
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-16-1637-2016 https://doaj.org/article/3fde63e98879417f8294fb8f8e5a6416 |
id |
ftdoajarticles:oai:doaj.org/article:3fde63e98879417f8294fb8f8e5a6416 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:3fde63e98879417f8294fb8f8e5a6416 2023-05-15T15:13:26+02:00 Size-resolved measurements of ice-nucleating particles at six locations in North America and one in Europe R. H. Mason M. Si C. Chou V. E. Irish R. Dickie P. Elizondo R. Wong M. Brintnell M. Elsasser W. M. Lassar K. M. Pierce W. R. Leaitch A. M. MacDonald A. Platt D. Toom-Sauntry R. Sarda-Estève C. L. Schiller K. J. Suski T. C. J. Hill J. P. D. Abbatt J. A. Huffman P. J. DeMott A. K. Bertram 2016-02-01T00:00:00Z https://doi.org/10.5194/acp-16-1637-2016 https://doaj.org/article/3fde63e98879417f8294fb8f8e5a6416 EN eng Copernicus Publications https://www.atmos-chem-phys.net/16/1637/2016/acp-16-1637-2016.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-16-1637-2016 1680-7316 1680-7324 https://doaj.org/article/3fde63e98879417f8294fb8f8e5a6416 Atmospheric Chemistry and Physics, Vol 16, Pp 1637-1651 (2016) Physics QC1-999 Chemistry QD1-999 article 2016 ftdoajarticles https://doi.org/10.5194/acp-16-1637-2016 2022-12-31T12:34:35Z Detailed information on the size of ice-nucleating particles (INPs) may be useful in source identification, modeling their transport in the atmosphere to improve climate predictions, and determining how effectively or ineffectively instrumentation used for quantifying INPs in the atmosphere captures the full INP population. In this study we report immersion-mode INP number concentrations as a function of size at six ground sites in North America and one in Europe using the micro-orifice uniform-deposit impactor droplet freezing technique (MOUDI-DFT), which combines particle size-segregation by inertial impaction and a microscope-based immersion freezing apparatus. The lowest INP number concentrations were observed at Arctic and alpine locations and the highest at suburban and agricultural locations, consistent with previous studies of INP concentrations in similar environments. We found that 91 ± 9, 79 ± 17, and 63 ± 21 % of INPs had an aerodynamic diameter > 1 µm at ice activation temperatures of −15, −20, and −25 °C, respectively, when averaging over all sampling locations. In addition, 62 ± 20, 55 ± 18, and 42 ± 17 % of INPs were in the coarse mode (> 2.5 µm) at ice activation temperatures of −15, −20, and −25 °C, respectively, when averaging over all sampling locations. These results are consistent with six out of the nine studies in the literature that have focused on the size distribution of INPs in the atmosphere. Taken together, these findings strongly suggest that supermicron and coarse-mode aerosol particles are a significant component of the INP population in many different ground-level environments. Further size-resolved studies of INPs as a function of altitude are required since the size distribution of INPs may be different at high altitudes due to size-dependent removal processes of atmospheric particles. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Atmospheric Chemistry and Physics 16 3 1637 1651 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 R. H. Mason M. Si C. Chou V. E. Irish R. Dickie P. Elizondo R. Wong M. Brintnell M. Elsasser W. M. Lassar K. M. Pierce W. R. Leaitch A. M. MacDonald A. Platt D. Toom-Sauntry R. Sarda-Estève C. L. Schiller K. J. Suski T. C. J. Hill J. P. D. Abbatt J. A. Huffman P. J. DeMott A. K. Bertram Size-resolved measurements of ice-nucleating particles at six locations in North America and one in Europe |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Detailed information on the size of ice-nucleating particles (INPs) may be useful in source identification, modeling their transport in the atmosphere to improve climate predictions, and determining how effectively or ineffectively instrumentation used for quantifying INPs in the atmosphere captures the full INP population. In this study we report immersion-mode INP number concentrations as a function of size at six ground sites in North America and one in Europe using the micro-orifice uniform-deposit impactor droplet freezing technique (MOUDI-DFT), which combines particle size-segregation by inertial impaction and a microscope-based immersion freezing apparatus. The lowest INP number concentrations were observed at Arctic and alpine locations and the highest at suburban and agricultural locations, consistent with previous studies of INP concentrations in similar environments. We found that 91 ± 9, 79 ± 17, and 63 ± 21 % of INPs had an aerodynamic diameter > 1 µm at ice activation temperatures of −15, −20, and −25 °C, respectively, when averaging over all sampling locations. In addition, 62 ± 20, 55 ± 18, and 42 ± 17 % of INPs were in the coarse mode (> 2.5 µm) at ice activation temperatures of −15, −20, and −25 °C, respectively, when averaging over all sampling locations. These results are consistent with six out of the nine studies in the literature that have focused on the size distribution of INPs in the atmosphere. Taken together, these findings strongly suggest that supermicron and coarse-mode aerosol particles are a significant component of the INP population in many different ground-level environments. Further size-resolved studies of INPs as a function of altitude are required since the size distribution of INPs may be different at high altitudes due to size-dependent removal processes of atmospheric particles. |
format |
Article in Journal/Newspaper |
author |
R. H. Mason M. Si C. Chou V. E. Irish R. Dickie P. Elizondo R. Wong M. Brintnell M. Elsasser W. M. Lassar K. M. Pierce W. R. Leaitch A. M. MacDonald A. Platt D. Toom-Sauntry R. Sarda-Estève C. L. Schiller K. J. Suski T. C. J. Hill J. P. D. Abbatt J. A. Huffman P. J. DeMott A. K. Bertram |
author_facet |
R. H. Mason M. Si C. Chou V. E. Irish R. Dickie P. Elizondo R. Wong M. Brintnell M. Elsasser W. M. Lassar K. M. Pierce W. R. Leaitch A. M. MacDonald A. Platt D. Toom-Sauntry R. Sarda-Estève C. L. Schiller K. J. Suski T. C. J. Hill J. P. D. Abbatt J. A. Huffman P. J. DeMott A. K. Bertram |
author_sort |
R. H. Mason |
title |
Size-resolved measurements of ice-nucleating particles at six locations in North America and one in Europe |
title_short |
Size-resolved measurements of ice-nucleating particles at six locations in North America and one in Europe |
title_full |
Size-resolved measurements of ice-nucleating particles at six locations in North America and one in Europe |
title_fullStr |
Size-resolved measurements of ice-nucleating particles at six locations in North America and one in Europe |
title_full_unstemmed |
Size-resolved measurements of ice-nucleating particles at six locations in North America and one in Europe |
title_sort |
size-resolved measurements of ice-nucleating particles at six locations in north america and one in europe |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/acp-16-1637-2016 https://doaj.org/article/3fde63e98879417f8294fb8f8e5a6416 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Atmospheric Chemistry and Physics, Vol 16, Pp 1637-1651 (2016) |
op_relation |
https://www.atmos-chem-phys.net/16/1637/2016/acp-16-1637-2016.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-16-1637-2016 1680-7316 1680-7324 https://doaj.org/article/3fde63e98879417f8294fb8f8e5a6416 |
op_doi |
https://doi.org/10.5194/acp-16-1637-2016 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
16 |
container_issue |
3 |
container_start_page |
1637 |
op_container_end_page |
1651 |
_version_ |
1766343992932302848 |