Studies on ice core records of dicarboxylic acids, ω-oxocarboxylic acids, pyruvic acid, α-dicarbonyls and fatty acids from southern Alaska since 1665 AD : A link to climate change in the Northern Hemisphere
Alaskan ice core (180 m long, 343 years) has been analyzed for a homologousseries of normal (C2 - C11), branched chain (iC4 - iC6), unsaturated (maleic, fumaric,methylmaleic and phthalic), multifunctional dicarboxylic (malic, oxomalonic and 4-oxopimelic), ω-oxocarboxylic acids (ωC2 - ωC9), pyruvic a...
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/59331 2023-05-15T16:39:05+02:00 Studies on ice core records of dicarboxylic acids, ω-oxocarboxylic acids, pyruvic acid, α-dicarbonyls and fatty acids from southern Alaska since 1665 AD : A link to climate change in the Northern Hemisphere 南アラスカにおけるジカルボン酸、ω-オキソカルボン酸、ピルビン酸、α-ジカルボニルの1665年以降のアイスコア記録に関する研究 : 北半球における気候変動とのリンク Pokhrel, Ambarish 河村, 公隆 吉川, 久幸 関, 宰 宮崎, 雄三 白岩, 孝行 鈴木, 德行 235p http://hdl.handle.net/2115/59331 https://doi.org/10.14943/doctoral.k11786 eng eng Hokkaido University http://hdl.handle.net/2115/59331 doi:10.14943/doctoral.k11786 北海道大学. 博士(環境科学) theses (doctoral) fthokunivhus https://doi.org/10.14943/doctoral.k11786 2022-11-18T01:03:26Z Alaskan ice core (180 m long, 343 years) has been analyzed for a homologousseries of normal (C2 - C11), branched chain (iC4 - iC6), unsaturated (maleic, fumaric,methylmaleic and phthalic), multifunctional dicarboxylic (malic, oxomalonic and 4-oxopimelic), ω-oxocarboxylic acids (ωC2 - ωC9), pyruvic acid, glyoxal andmethylglyoxal using gas chromatography (GC/FID) and GC/mass spectrometry(GC/MS) to understand historical changes in water soluble organic aerosols.Similarly, homologous series of straight chain fatty acids (C12:0 - C30:0) has beendetected by using GC/FID and GC/MS system.Predominance of oxalic acid was found followed by adipic and succinic acid.Molecular distributions of ω-oxocarboxylic acids are characterized by thepredominance of 9-oxononanoic, followed by 4-oxobutanoic and glyoxylic acids.Historical concentrations of diacids, oxoacids and α-dicarbonyls are formed by theoxidation of precursor compounds emitted from biogenic and biomass burningactivities and which are controlled under climate oscillations and similarmeteorological parameters. Historical trends of monoterpene and isoprene SOAtracers showed significant concentrations since the 1660s, which are associated withambient atmospheric temperature and controlled by Aleutine Low.Molecular distributions of fatty acids are characterized by even carbon numberpredominance with a peak at palmitic (C16:0) followed by oleic (C18:1) and myristicacid (C14:0). The historical trends of short-chain fatty acids, together with correlationanalysis with inorganic ions and organic tracers suggest that short-chain fatty acids(except for C12:0 and C15:0) were mainly derived from sea surface micro layers. Incontrast, long-chain fatty acids (C20:0 - C30:0) are originated from terrestrial higherplants, soil organic matter and dusts, which are also linked with GreenlandTemperature Anomaly (GTA). Hence, this study suggests that Alaskan fatty acids arestrongly influenced by Pacific Decadal Oscillation/North Pacific Gyre Oscillationand/or extra tropical North Pacific ... Other/Unknown Material ice core Alaska Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Fid ENVELOPE(-65.939,-65.939,-68.664,-68.664) Pacific |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
description |
Alaskan ice core (180 m long, 343 years) has been analyzed for a homologousseries of normal (C2 - C11), branched chain (iC4 - iC6), unsaturated (maleic, fumaric,methylmaleic and phthalic), multifunctional dicarboxylic (malic, oxomalonic and 4-oxopimelic), ω-oxocarboxylic acids (ωC2 - ωC9), pyruvic acid, glyoxal andmethylglyoxal using gas chromatography (GC/FID) and GC/mass spectrometry(GC/MS) to understand historical changes in water soluble organic aerosols.Similarly, homologous series of straight chain fatty acids (C12:0 - C30:0) has beendetected by using GC/FID and GC/MS system.Predominance of oxalic acid was found followed by adipic and succinic acid.Molecular distributions of ω-oxocarboxylic acids are characterized by thepredominance of 9-oxononanoic, followed by 4-oxobutanoic and glyoxylic acids.Historical concentrations of diacids, oxoacids and α-dicarbonyls are formed by theoxidation of precursor compounds emitted from biogenic and biomass burningactivities and which are controlled under climate oscillations and similarmeteorological parameters. Historical trends of monoterpene and isoprene SOAtracers showed significant concentrations since the 1660s, which are associated withambient atmospheric temperature and controlled by Aleutine Low.Molecular distributions of fatty acids are characterized by even carbon numberpredominance with a peak at palmitic (C16:0) followed by oleic (C18:1) and myristicacid (C14:0). The historical trends of short-chain fatty acids, together with correlationanalysis with inorganic ions and organic tracers suggest that short-chain fatty acids(except for C12:0 and C15:0) were mainly derived from sea surface micro layers. Incontrast, long-chain fatty acids (C20:0 - C30:0) are originated from terrestrial higherplants, soil organic matter and dusts, which are also linked with GreenlandTemperature Anomaly (GTA). Hence, this study suggests that Alaskan fatty acids arestrongly influenced by Pacific Decadal Oscillation/North Pacific Gyre Oscillationand/or extra tropical North Pacific ... |
author2 |
河村, 公隆 吉川, 久幸 関, 宰 宮崎, 雄三 白岩, 孝行 鈴木, 德行 |
format |
Other/Unknown Material |
author |
Pokhrel, Ambarish |
spellingShingle |
Pokhrel, Ambarish Studies on ice core records of dicarboxylic acids, ω-oxocarboxylic acids, pyruvic acid, α-dicarbonyls and fatty acids from southern Alaska since 1665 AD : A link to climate change in the Northern Hemisphere |
author_facet |
Pokhrel, Ambarish |
author_sort |
Pokhrel, Ambarish |
title |
Studies on ice core records of dicarboxylic acids, ω-oxocarboxylic acids, pyruvic acid, α-dicarbonyls and fatty acids from southern Alaska since 1665 AD : A link to climate change in the Northern Hemisphere |
title_short |
Studies on ice core records of dicarboxylic acids, ω-oxocarboxylic acids, pyruvic acid, α-dicarbonyls and fatty acids from southern Alaska since 1665 AD : A link to climate change in the Northern Hemisphere |
title_full |
Studies on ice core records of dicarboxylic acids, ω-oxocarboxylic acids, pyruvic acid, α-dicarbonyls and fatty acids from southern Alaska since 1665 AD : A link to climate change in the Northern Hemisphere |
title_fullStr |
Studies on ice core records of dicarboxylic acids, ω-oxocarboxylic acids, pyruvic acid, α-dicarbonyls and fatty acids from southern Alaska since 1665 AD : A link to climate change in the Northern Hemisphere |
title_full_unstemmed |
Studies on ice core records of dicarboxylic acids, ω-oxocarboxylic acids, pyruvic acid, α-dicarbonyls and fatty acids from southern Alaska since 1665 AD : A link to climate change in the Northern Hemisphere |
title_sort |
studies on ice core records of dicarboxylic acids, ω-oxocarboxylic acids, pyruvic acid, α-dicarbonyls and fatty acids from southern alaska since 1665 ad : a link to climate change in the northern hemisphere |
publisher |
Hokkaido University |
url |
http://hdl.handle.net/2115/59331 https://doi.org/10.14943/doctoral.k11786 |
long_lat |
ENVELOPE(-65.939,-65.939,-68.664,-68.664) |
geographic |
Fid Pacific |
geographic_facet |
Fid Pacific |
genre |
ice core Alaska |
genre_facet |
ice core Alaska |
op_relation |
http://hdl.handle.net/2115/59331 doi:10.14943/doctoral.k11786 北海道大学. 博士(環境科学) |
op_doi |
https://doi.org/10.14943/doctoral.k11786 |
_version_ |
1766029416765325312 |