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Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom
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| Zeitschriftentitel: | Journal of Geophysical Research: Atmospheres |
|---|---|
| Personen und Körperschaften: | , , , , , , |
| In: | Journal of Geophysical Research: Atmospheres, 105, 2000, D22, S. 26891-26905 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Geophysical Union (AGU)
|
| Schlagwörter: |
| author_facet |
Coe, Hugh Williams, Paul I. McFiggans, Gordon Gallagher, Martin W. Beswick, Karl M. Bower, Keith N. Choularton, Tom W. Coe, Hugh Williams, Paul I. McFiggans, Gordon Gallagher, Martin W. Beswick, Karl M. Bower, Keith N. Choularton, Tom W. |
|---|---|
| author |
Coe, Hugh Williams, Paul I. McFiggans, Gordon Gallagher, Martin W. Beswick, Karl M. Bower, Keith N. Choularton, Tom W. |
| spellingShingle |
Coe, Hugh Williams, Paul I. McFiggans, Gordon Gallagher, Martin W. Beswick, Karl M. Bower, Keith N. Choularton, Tom W. Journal of Geophysical Research: Atmospheres Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom Paleontology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Earth-Surface Processes Geochemistry and Petrology Soil Science Water Science and Technology Ecology Aquatic Science Forestry Oceanography Geophysics |
| author_sort |
coe, hugh |
| spelling |
Coe, Hugh Williams, Paul I. McFiggans, Gordon Gallagher, Martin W. Beswick, Karl M. Bower, Keith N. Choularton, Tom W. 0148-0227 American Geophysical Union (AGU) Paleontology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Earth-Surface Processes Geochemistry and Petrology Soil Science Water Science and Technology Ecology Aquatic Science Forestry Oceanography Geophysics http://dx.doi.org/10.1029/2000jd900234 <jats:p>Particle size distribution measurements were made at a coastal site in the United Kingdom. These are presented, and the behavior of recently formed ultrafine particles is discussed. No ultrafine particles were observed in maritime air masses; however, 3 to 7 nm particles were frequently observed at enhanced concentrations when the wind direction was from the land. Their formation was favored at lower temperatures, when 1 ppbv or more of SO<jats:sub>2</jats:sub> was present and in air masses that had not been aged extensively. On days when enhanced ultrafine particle concentrations were observed, 3 nm particles increased sharply in the morning, approximately 30 to 90 min after the UV solar flux first increased. By early afternoon the ultrafine particle concentration had returned to background levels. Rapid measurements of 5 nm particles showed no correlation with turbulence parameters, although the boundary layer mixing scales were similar to growth times of freshly nucleated particles to 5 nm diameter. However, ultrafine particle concentrations do correlate with the availability of sulphuric acid vapor. A delay of approximately an hour between the increase of H<jats:sub>2</jats:sub>SO<jats:sub>4</jats:sub> in the morning and a large increase in ultrafine particle concentrations is due to the growth of particles to observable sizes, not the nucleation process itself. An analysis of the timescales for growth showed that coagulation may be important immediately after the particles have nucleated but its effectiveness reduces as number concentration falls. Conversely, growth by condensation is initially slow due to the Kelvin effect but increases in importance as the particles reach observable sizes.</jats:p> Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom Journal of Geophysical Research: Atmospheres |
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Allgemeine Naturwissenschaft Physik Technik Geologie und Paläontologie Geographie Chemie und Pharmazie Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft Biologie |
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| title |
Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom |
| title_unstemmed |
Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom |
| title_full |
Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom |
| title_fullStr |
Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom |
| title_full_unstemmed |
Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom |
| title_short |
Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom |
| title_sort |
behavior of ultrafine particles in continental and marine air masses at a rural site in the united kingdom |
| topic |
Paleontology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Earth-Surface Processes Geochemistry and Petrology Soil Science Water Science and Technology Ecology Aquatic Science Forestry Oceanography Geophysics |
| url |
http://dx.doi.org/10.1029/2000jd900234 |
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2000 |
| physical |
26891-26905 |
| description |
<jats:p>Particle size distribution measurements were made at a coastal site in the United Kingdom. These are presented, and the behavior of recently formed ultrafine particles is discussed. No ultrafine particles were observed in maritime air masses; however, 3 to 7 nm particles were frequently observed at enhanced concentrations when the wind direction was from the land. Their formation was favored at lower temperatures, when 1 ppbv or more of SO<jats:sub>2</jats:sub> was present and in air masses that had not been aged extensively. On days when enhanced ultrafine particle concentrations were observed, 3 nm particles increased sharply in the morning, approximately 30 to 90 min after the UV solar flux first increased. By early afternoon the ultrafine particle concentration had returned to background levels. Rapid measurements of 5 nm particles showed no correlation with turbulence parameters, although the boundary layer mixing scales were similar to growth times of freshly nucleated particles to 5 nm diameter. However, ultrafine particle concentrations do correlate with the availability of sulphuric acid vapor. A delay of approximately an hour between the increase of H<jats:sub>2</jats:sub>SO<jats:sub>4</jats:sub> in the morning and a large increase in ultrafine particle concentrations is due to the growth of particles to observable sizes, not the nucleation process itself. An analysis of the timescales for growth showed that coagulation may be important immediately after the particles have nucleated but its effectiveness reduces as number concentration falls. Conversely, growth by condensation is initially slow due to the Kelvin effect but increases in importance as the particles reach observable sizes.</jats:p> |
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| author | Coe, Hugh, Williams, Paul I., McFiggans, Gordon, Gallagher, Martin W., Beswick, Karl M., Bower, Keith N., Choularton, Tom W. |
| author_facet | Coe, Hugh, Williams, Paul I., McFiggans, Gordon, Gallagher, Martin W., Beswick, Karl M., Bower, Keith N., Choularton, Tom W., Coe, Hugh, Williams, Paul I., McFiggans, Gordon, Gallagher, Martin W., Beswick, Karl M., Bower, Keith N., Choularton, Tom W. |
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| description | <jats:p>Particle size distribution measurements were made at a coastal site in the United Kingdom. These are presented, and the behavior of recently formed ultrafine particles is discussed. No ultrafine particles were observed in maritime air masses; however, 3 to 7 nm particles were frequently observed at enhanced concentrations when the wind direction was from the land. Their formation was favored at lower temperatures, when 1 ppbv or more of SO<jats:sub>2</jats:sub> was present and in air masses that had not been aged extensively. On days when enhanced ultrafine particle concentrations were observed, 3 nm particles increased sharply in the morning, approximately 30 to 90 min after the UV solar flux first increased. By early afternoon the ultrafine particle concentration had returned to background levels. Rapid measurements of 5 nm particles showed no correlation with turbulence parameters, although the boundary layer mixing scales were similar to growth times of freshly nucleated particles to 5 nm diameter. However, ultrafine particle concentrations do correlate with the availability of sulphuric acid vapor. A delay of approximately an hour between the increase of H<jats:sub>2</jats:sub>SO<jats:sub>4</jats:sub> in the morning and a large increase in ultrafine particle concentrations is due to the growth of particles to observable sizes, not the nucleation process itself. An analysis of the timescales for growth showed that coagulation may be important immediately after the particles have nucleated but its effectiveness reduces as number concentration falls. Conversely, growth by condensation is initially slow due to the Kelvin effect but increases in importance as the particles reach observable sizes.</jats:p> |
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| imprint_str_mv | American Geophysical Union (AGU), 2000 |
| institution | DE-D275, DE-Bn3, DE-Brt1, DE-Zwi2, DE-D161, DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229 |
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| spelling | Coe, Hugh Williams, Paul I. McFiggans, Gordon Gallagher, Martin W. Beswick, Karl M. Bower, Keith N. Choularton, Tom W. 0148-0227 American Geophysical Union (AGU) Paleontology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Earth-Surface Processes Geochemistry and Petrology Soil Science Water Science and Technology Ecology Aquatic Science Forestry Oceanography Geophysics http://dx.doi.org/10.1029/2000jd900234 <jats:p>Particle size distribution measurements were made at a coastal site in the United Kingdom. These are presented, and the behavior of recently formed ultrafine particles is discussed. No ultrafine particles were observed in maritime air masses; however, 3 to 7 nm particles were frequently observed at enhanced concentrations when the wind direction was from the land. Their formation was favored at lower temperatures, when 1 ppbv or more of SO<jats:sub>2</jats:sub> was present and in air masses that had not been aged extensively. On days when enhanced ultrafine particle concentrations were observed, 3 nm particles increased sharply in the morning, approximately 30 to 90 min after the UV solar flux first increased. By early afternoon the ultrafine particle concentration had returned to background levels. Rapid measurements of 5 nm particles showed no correlation with turbulence parameters, although the boundary layer mixing scales were similar to growth times of freshly nucleated particles to 5 nm diameter. However, ultrafine particle concentrations do correlate with the availability of sulphuric acid vapor. A delay of approximately an hour between the increase of H<jats:sub>2</jats:sub>SO<jats:sub>4</jats:sub> in the morning and a large increase in ultrafine particle concentrations is due to the growth of particles to observable sizes, not the nucleation process itself. An analysis of the timescales for growth showed that coagulation may be important immediately after the particles have nucleated but its effectiveness reduces as number concentration falls. Conversely, growth by condensation is initially slow due to the Kelvin effect but increases in importance as the particles reach observable sizes.</jats:p> Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom Journal of Geophysical Research: Atmospheres |
| spellingShingle | Coe, Hugh, Williams, Paul I., McFiggans, Gordon, Gallagher, Martin W., Beswick, Karl M., Bower, Keith N., Choularton, Tom W., Journal of Geophysical Research: Atmospheres, Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom, Paleontology, Space and Planetary Science, Earth and Planetary Sciences (miscellaneous), Atmospheric Science, Earth-Surface Processes, Geochemistry and Petrology, Soil Science, Water Science and Technology, Ecology, Aquatic Science, Forestry, Oceanography, Geophysics |
| title | Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom |
| title_full | Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom |
| title_fullStr | Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom |
| title_full_unstemmed | Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom |
| title_short | Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom |
| title_sort | behavior of ultrafine particles in continental and marine air masses at a rural site in the united kingdom |
| title_unstemmed | Behavior of ultrafine particles in continental and marine air masses at a rural site in the United Kingdom |
| topic | Paleontology, Space and Planetary Science, Earth and Planetary Sciences (miscellaneous), Atmospheric Science, Earth-Surface Processes, Geochemistry and Petrology, Soil Science, Water Science and Technology, Ecology, Aquatic Science, Forestry, Oceanography, Geophysics |
| url | http://dx.doi.org/10.1029/2000jd900234 |