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Rivers as Sources of Freshwater Ice-Nucleating Particles.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Rivers as Sources of Freshwater Ice-Nucleating Particles./
作者:	Knackstedt, Kathryn.
面頁冊數:	1 online resource (61 pages)
附註:	Source: Masters Abstracts International, Volume: 56-06.
標題:	Aquatic sciences. -
電子資源:	click for full text (PQDT)
ISBN:	9780355184266

Rivers as Sources of Freshwater Ice-Nucleating Particles.
Knackstedt, Kathryn.

Rivers as Sources of Freshwater Ice-Nucleating Particles. - 1 online resource (61 pages)

Source: Masters Abstracts International, Volume: 56-06.

Thesis (M.S.)--Bowling Green State University, 2017.

Includes bibliographical references

Ice nucleating particles (INP) are a neglected, but integral component of the water cycle. Preliminary evidence is presented showing that rivers possess high numbers of warm temperature biological INP and that these may become airborne. Whereas recent efforts characterizing marine INPs are beginning to inform circulation models to predict weather patterns, the contribution of freshwater INPs to the water cycle has been largely overlooked. Evidence is presented showing that rivers possess high numbers of warm temperature (≥-10 °C) INP whose abundance may be several orders of magnitude higher than marine sources. Focusing on the Maumee River, situated in a predominantly agricultural watershed and which serves as the largest tributary to Lake Erie, a seasonal analysis of surface water INP revealed a strong positive relationship between INP abundance and river discharge with INP abundance varying by three orders of magnitude between low river discharge in summer and early fall and high discharge in winter and spring. Assessing the potential of INP to become aerosolized, INP abundance was consistently higher in air sampled near engineered features promoting turbulence compared to controls located away from direct influence of the river. The analysis also indicates that the vast majority of the INP in river surface waters are subcellular and so not attributable to known INP classes. Apart from seasonally-resolved surveys of the Maumee River, a small focused study was conducted at the University of Michigan Biological Station (UMBS) Stream Research Facility. This served as a way to engineer different turbulent river features on a smaller scale to determine aerosolization of warm temperature INP. Combined with recent surveys of other major US rivers, there is growing consensus that the presence of abundant warm temperature INP is a common, if not ubiquitous feature of fresh water systems.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355184266Subjects--Topical Terms:

1178821
Aquatic sciences.
Index Terms--Genre/Form:

554714
Electronic books.

Rivers as Sources of Freshwater Ice-Nucleating Particles.
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500 $a Adviser: Robert McKay.
502 $a Thesis (M.S.)--Bowling Green State University, 2017.
504 $a Includes bibliographical references
520 $a Ice nucleating particles (INP) are a neglected, but integral component of the water cycle. Preliminary evidence is presented showing that rivers possess high numbers of warm temperature biological INP and that these may become airborne. Whereas recent efforts characterizing marine INPs are beginning to inform circulation models to predict weather patterns, the contribution of freshwater INPs to the water cycle has been largely overlooked. Evidence is presented showing that rivers possess high numbers of warm temperature (≥-10 °C) INP whose abundance may be several orders of magnitude higher than marine sources. Focusing on the Maumee River, situated in a predominantly agricultural watershed and which serves as the largest tributary to Lake Erie, a seasonal analysis of surface water INP revealed a strong positive relationship between INP abundance and river discharge with INP abundance varying by three orders of magnitude between low river discharge in summer and early fall and high discharge in winter and spring. Assessing the potential of INP to become aerosolized, INP abundance was consistently higher in air sampled near engineered features promoting turbulence compared to controls located away from direct influence of the river. The analysis also indicates that the vast majority of the INP in river surface waters are subcellular and so not attributable to known INP classes. Apart from seasonally-resolved surveys of the Maumee River, a small focused study was conducted at the University of Michigan Biological Station (UMBS) Stream Research Facility. This served as a way to engineer different turbulent river features on a smaller scale to determine aerosolization of warm temperature INP. Combined with recent surveys of other major US rivers, there is growing consensus that the presence of abundant warm temperature INP is a common, if not ubiquitous feature of fresh water systems.
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