Untersuchung der Photooxidantien Wasserstoffperoxid, Methylhydroperoxid und Formaldehyd in der Troposphäre der Antarktis : = Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica

Photooxidants play an important role for the oxidation capacity of the troposphere. The presented work deals with seasonal changes of atmospheric photooxidants like hydrogen peroxide (H2O2), methylhydroperoxide (MHP) and formaldehyde (HCHO). The principal purpose was to follow and quantify the mixin...
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Autor*in:	Riedel, Katja [verfasserIn]
Hochschulschrift:	Bremen, Univ., Diss, 2001

Format:	E-Book
Sprache:	Deutsch

Erschienen:	2001

Schlagwörter:	Antarktis / Troposphäre / Fotooxidantien / Jahreslauf
Formangabe:	Hochschulschrift

Umfang:	Online-Ressource (176 S.)

Links:	Link aufrufen Volltext Volltext Volltext

Katalog-ID:	358553121

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245	1	0	\|a Untersuchung der Photooxidantien Wasserstoffperoxid, Methylhydroperoxid und Formaldehyd in der Troposphäre der Antarktis \|b = Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica \|c von Katja Riedel
246	3	1	\|a Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica
246	3	3	\|a Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica
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oclc_num	175066574
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spelling	03,H01,1077 dnb 962847860 DE-101 (DE-627)358553121 (DE-599)DNB962847860 (OCoLC)175066574 DE-627 ger DE-627 rakwb ger XA-DE 31 44 30 sdnb Riedel, Katja verfasserin aut Untersuchung der Photooxidantien Wasserstoffperoxid, Methylhydroperoxid und Formaldehyd in der Troposphäre der Antarktis = Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica von Katja Riedel Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica 2001 Online-Ressource (176 S.) Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Bremen, Univ., Diss, 2001 Photooxidants play an important role for the oxidation capacity of the troposphere. The presented work deals with seasonal changes of atmospheric photooxidants like hydrogen peroxide (H2O2), methylhydroperoxide (MHP) and formaldehyde (HCHO). The principal purpose was to follow and quantify the mixing-ratios of these photochemical species for the first time over a complete annual cycle in Antarctica. During two field campaigns at the German Antarctic station Neumayer (overwintering campaign from January 1997 until March 1998 and a shorter campaign from January to March 1999) continuous measurements of atmospheric mixing-ratios were performed. A continuous wet-chemical technique was used for peroxides and formaldehyde sampling and analysis. Species were quantified by fluorescence detection. In order to compare the results and measurements with well-known reaction mechanisms a photochemical box model was applied. The obtained time series show a pronounced seasonal variation with higher values during summer. For the first time atmospheric concentrations of H2O2, MHP and HCHO were documented during polar night in winter. The mixing-ratios were significantly higher than expected due to missing actinic radiation essential for photochemical production. Trajectory analyses and calculations with a three-dimensional model showed that during winter the mixing-ratios of photooxidants are mainly affected by long-range transport in the free troposphere. Investigations during the Antarctic ó́zone hole period ́́show no significant impact of the increased UV-B radiation on the photooxidants. The findings of this work contribute to a better understanding of the photochemistry of the investigated trace gases in the clean troposphere of Antarctica and provide a useful data record for further photochemical modeling. Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content g (DE-588)4002208-0 (DE-627)106394169 (DE-576)208846158 Antarktis gnd s (DE-588)4061018-4 (DE-627)106137522 (DE-576)209137606 Troposphäre gnd s (DE-588)4344462-3 (DE-627)155480480 (DE-576)211457884 Fotooxidantien gnd s (DE-588)4027996-0 (DE-627)104364289 (DE-576)208973486 Jahreslauf gnd DE-101 Bremen uvp http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000001440 Resolving-System Volltext http://webdoc.sub.gwdg.de/ebook/diss/2003/sub-bremen/dissertations/E-Diss144_Promotion.pdf Verlag Volltext http://d-nb.info/962847860 Verlag Volltext GBV_ILN_20 ISIL_DE-84 SYSFLAG_1 GBV_KXP SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_21 ISIL_DE-46 GBV_ILN_22 ISIL_DE-18 GBV_ILN_30 ISIL_DE-104 GBV_ILN_40 ISIL_DE-7 GBV_ILN_60 ISIL_DE-705 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_370 ISIL_DE-1373 BO 20 01 0084 653213182 x 22-06-04 21 01 0046 659638568 zza 13-08-04 22 01 0018 586727027 SUBolrd xu 21-01-03 30 01 0104 719765544 z 14-05-05 40 01 0007 586727035 xsn 21-01-03 60 01 0705 586727043 z 21-01-03 110 01 3110 719765552 xz 14-05-05 370 01 4370 822427486 x 08-06-07 20 01 0084 http://d-nb.info/962847860 21 01 0046 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000001440 LF 22 01 0018 http://deposit.ddb.de/cgi-bin/dokserv?idn=962847860 30 01 0104 http://deposit.ddb.de/cgi-bin/dokserv?idn=962847860 40 01 0007 http://webdoc.sub.gwdg.de/ebook/diss/2003/sub-bremen/dissertations/E-Diss144_Promotion.pdf 60 01 0705 http://d-nb.info/962847860 110 01 3110 http://d-nb.info/962847860 370 01 4370 http://deposit.ddb.de/cgi-bin/dokserv?idn=962847860 40 00 DE-7 00 (DE-627)623609681 TYY 200 Antarktis {Meteorologie und Klimatologie} 40 00 DE-7 01 (DE-627)623607549 TVA 210 Chemische Zusammensetzung der Atmosphäre {Meteorologie} 60 01 0705 10 ho 21 01 0046 OLRD 30 01 0104 OLRD 60 01 0705 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 22 01 0018 SUBolrd
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allfieldsGer	03,H01,1077 dnb 962847860 DE-101 (DE-627)358553121 (DE-599)DNB962847860 (OCoLC)175066574 DE-627 ger DE-627 rakwb ger XA-DE 31 44 30 sdnb Riedel, Katja verfasserin aut Untersuchung der Photooxidantien Wasserstoffperoxid, Methylhydroperoxid und Formaldehyd in der Troposphäre der Antarktis = Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica von Katja Riedel Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica 2001 Online-Ressource (176 S.) Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Bremen, Univ., Diss, 2001 Photooxidants play an important role for the oxidation capacity of the troposphere. The presented work deals with seasonal changes of atmospheric photooxidants like hydrogen peroxide (H2O2), methylhydroperoxide (MHP) and formaldehyde (HCHO). The principal purpose was to follow and quantify the mixing-ratios of these photochemical species for the first time over a complete annual cycle in Antarctica. During two field campaigns at the German Antarctic station Neumayer (overwintering campaign from January 1997 until March 1998 and a shorter campaign from January to March 1999) continuous measurements of atmospheric mixing-ratios were performed. A continuous wet-chemical technique was used for peroxides and formaldehyde sampling and analysis. Species were quantified by fluorescence detection. In order to compare the results and measurements with well-known reaction mechanisms a photochemical box model was applied. The obtained time series show a pronounced seasonal variation with higher values during summer. For the first time atmospheric concentrations of H2O2, MHP and HCHO were documented during polar night in winter. The mixing-ratios were significantly higher than expected due to missing actinic radiation essential for photochemical production. Trajectory analyses and calculations with a three-dimensional model showed that during winter the mixing-ratios of photooxidants are mainly affected by long-range transport in the free troposphere. Investigations during the Antarctic ó́zone hole period ́́show no significant impact of the increased UV-B radiation on the photooxidants. The findings of this work contribute to a better understanding of the photochemistry of the investigated trace gases in the clean troposphere of Antarctica and provide a useful data record for further photochemical modeling. Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content g (DE-588)4002208-0 (DE-627)106394169 (DE-576)208846158 Antarktis gnd s (DE-588)4061018-4 (DE-627)106137522 (DE-576)209137606 Troposphäre gnd s (DE-588)4344462-3 (DE-627)155480480 (DE-576)211457884 Fotooxidantien gnd s (DE-588)4027996-0 (DE-627)104364289 (DE-576)208973486 Jahreslauf gnd DE-101 Bremen uvp http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000001440 Resolving-System Volltext http://webdoc.sub.gwdg.de/ebook/diss/2003/sub-bremen/dissertations/E-Diss144_Promotion.pdf Verlag Volltext http://d-nb.info/962847860 Verlag Volltext GBV_ILN_20 ISIL_DE-84 SYSFLAG_1 GBV_KXP SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_21 ISIL_DE-46 GBV_ILN_22 ISIL_DE-18 GBV_ILN_30 ISIL_DE-104 GBV_ILN_40 ISIL_DE-7 GBV_ILN_60 ISIL_DE-705 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_370 ISIL_DE-1373 BO 20 01 0084 653213182 x 22-06-04 21 01 0046 659638568 zza 13-08-04 22 01 0018 586727027 SUBolrd xu 21-01-03 30 01 0104 719765544 z 14-05-05 40 01 0007 586727035 xsn 21-01-03 60 01 0705 586727043 z 21-01-03 110 01 3110 719765552 xz 14-05-05 370 01 4370 822427486 x 08-06-07 20 01 0084 http://d-nb.info/962847860 21 01 0046 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000001440 LF 22 01 0018 http://deposit.ddb.de/cgi-bin/dokserv?idn=962847860 30 01 0104 http://deposit.ddb.de/cgi-bin/dokserv?idn=962847860 40 01 0007 http://webdoc.sub.gwdg.de/ebook/diss/2003/sub-bremen/dissertations/E-Diss144_Promotion.pdf 60 01 0705 http://d-nb.info/962847860 110 01 3110 http://d-nb.info/962847860 370 01 4370 http://deposit.ddb.de/cgi-bin/dokserv?idn=962847860 40 00 DE-7 00 (DE-627)623609681 TYY 200 Antarktis {Meteorologie und Klimatologie} 40 00 DE-7 01 (DE-627)623607549 TVA 210 Chemische Zusammensetzung der Atmosphäre {Meteorologie} 60 01 0705 10 ho 21 01 0046 OLRD 30 01 0104 OLRD 60 01 0705 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 22 01 0018 SUBolrd
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author	Riedel, Katja
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title	Untersuchung der Photooxidantien Wasserstoffperoxid, Methylhydroperoxid und Formaldehyd in der Troposphäre der Antarktis = Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica
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title_full	Untersuchung der Photooxidantien Wasserstoffperoxid, Methylhydroperoxid und Formaldehyd in der Troposphäre der Antarktis = Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica von Katja Riedel
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title_sub	= Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica
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title_sort	untersuchung der photooxidantien wasserstoffperoxid, methylhydroperoxid und formaldehyd in der troposphäre der antarktis = investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of antarctica
title_auth	Untersuchung der Photooxidantien Wasserstoffperoxid, Methylhydroperoxid und Formaldehyd in der Troposphäre der Antarktis = Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica
abstract	Photooxidants play an important role for the oxidation capacity of the troposphere. The presented work deals with seasonal changes of atmospheric photooxidants like hydrogen peroxide (H2O2), methylhydroperoxide (MHP) and formaldehyde (HCHO). The principal purpose was to follow and quantify the mixing-ratios of these photochemical species for the first time over a complete annual cycle in Antarctica. During two field campaigns at the German Antarctic station Neumayer (overwintering campaign from January 1997 until March 1998 and a shorter campaign from January to March 1999) continuous measurements of atmospheric mixing-ratios were performed. A continuous wet-chemical technique was used for peroxides and formaldehyde sampling and analysis. Species were quantified by fluorescence detection. In order to compare the results and measurements with well-known reaction mechanisms a photochemical box model was applied. The obtained time series show a pronounced seasonal variation with higher values during summer. For the first time atmospheric concentrations of H2O2, MHP and HCHO were documented during polar night in winter. The mixing-ratios were significantly higher than expected due to missing actinic radiation essential for photochemical production. Trajectory analyses and calculations with a three-dimensional model showed that during winter the mixing-ratios of photooxidants are mainly affected by long-range transport in the free troposphere. Investigations during the Antarctic ó́zone hole period ́́show no significant impact of the increased UV-B radiation on the photooxidants. The findings of this work contribute to a better understanding of the photochemistry of the investigated trace gases in the clean troposphere of Antarctica and provide a useful data record for further photochemical modeling.
abstractGer	Photooxidants play an important role for the oxidation capacity of the troposphere. The presented work deals with seasonal changes of atmospheric photooxidants like hydrogen peroxide (H2O2), methylhydroperoxide (MHP) and formaldehyde (HCHO). The principal purpose was to follow and quantify the mixing-ratios of these photochemical species for the first time over a complete annual cycle in Antarctica. During two field campaigns at the German Antarctic station Neumayer (overwintering campaign from January 1997 until March 1998 and a shorter campaign from January to March 1999) continuous measurements of atmospheric mixing-ratios were performed. A continuous wet-chemical technique was used for peroxides and formaldehyde sampling and analysis. Species were quantified by fluorescence detection. In order to compare the results and measurements with well-known reaction mechanisms a photochemical box model was applied. The obtained time series show a pronounced seasonal variation with higher values during summer. For the first time atmospheric concentrations of H2O2, MHP and HCHO were documented during polar night in winter. The mixing-ratios were significantly higher than expected due to missing actinic radiation essential for photochemical production. Trajectory analyses and calculations with a three-dimensional model showed that during winter the mixing-ratios of photooxidants are mainly affected by long-range transport in the free troposphere. Investigations during the Antarctic ó́zone hole period ́́show no significant impact of the increased UV-B radiation on the photooxidants. The findings of this work contribute to a better understanding of the photochemistry of the investigated trace gases in the clean troposphere of Antarctica and provide a useful data record for further photochemical modeling.
abstract_unstemmed	Photooxidants play an important role for the oxidation capacity of the troposphere. The presented work deals with seasonal changes of atmospheric photooxidants like hydrogen peroxide (H2O2), methylhydroperoxide (MHP) and formaldehyde (HCHO). The principal purpose was to follow and quantify the mixing-ratios of these photochemical species for the first time over a complete annual cycle in Antarctica. During two field campaigns at the German Antarctic station Neumayer (overwintering campaign from January 1997 until March 1998 and a shorter campaign from January to March 1999) continuous measurements of atmospheric mixing-ratios were performed. A continuous wet-chemical technique was used for peroxides and formaldehyde sampling and analysis. Species were quantified by fluorescence detection. In order to compare the results and measurements with well-known reaction mechanisms a photochemical box model was applied. The obtained time series show a pronounced seasonal variation with higher values during summer. For the first time atmospheric concentrations of H2O2, MHP and HCHO were documented during polar night in winter. The mixing-ratios were significantly higher than expected due to missing actinic radiation essential for photochemical production. Trajectory analyses and calculations with a three-dimensional model showed that during winter the mixing-ratios of photooxidants are mainly affected by long-range transport in the free troposphere. Investigations during the Antarctic ó́zone hole period ́́show no significant impact of the increased UV-B radiation on the photooxidants. The findings of this work contribute to a better understanding of the photochemistry of the investigated trace gases in the clean troposphere of Antarctica and provide a useful data record for further photochemical modeling.
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title_short	Untersuchung der Photooxidantien Wasserstoffperoxid, Methylhydroperoxid und Formaldehyd in der Troposphäre der Antarktis
url	http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000001440 http://webdoc.sub.gwdg.de/ebook/diss/2003/sub-bremen/dissertations/E-Diss144_Promotion.pdf http://d-nb.info/962847860
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title_alt	Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica
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up_date	2024-07-04T22:47:31.963Z
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The presented work deals with seasonal changes of atmospheric photooxidants like hydrogen peroxide (H2O2), methylhydroperoxide (MHP) and formaldehyde (HCHO). The principal purpose was to follow and quantify the mixing-ratios of these photochemical species for the first time over a complete annual cycle in Antarctica. During two field campaigns at the German Antarctic station Neumayer (overwintering campaign from January 1997 until March 1998 and a shorter campaign from January to March 1999) continuous measurements of atmospheric mixing-ratios were performed. A continuous wet-chemical technique was used for peroxides and formaldehyde sampling and analysis. Species were quantified by fluorescence detection. In order to compare the results and measurements with well-known reaction mechanisms a photochemical box model was applied. The obtained time series show a pronounced seasonal variation with higher values during summer. For the first time atmospheric concentrations of H2O2, MHP and HCHO were documented during polar night in winter. The mixing-ratios were significantly higher than expected due to missing actinic radiation essential for photochemical production. Trajectory analyses and calculations with a three-dimensional model showed that during winter the mixing-ratios of photooxidants are mainly affected by long-range transport in the free troposphere. Investigations during the Antarctic ó́zone hole period ́́show no significant impact of the increased UV-B radiation on the photooxidants. 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Untersuchung der Photooxidantien Wasserstoffperoxid, Methylhydroperoxid und Formaldehyd in der Troposphäre der Antarktis : = Investigation of the photooxidants hydrogen peroxide, methylhydroperoxide, and formaldehyde in the troposphere of Antarctica

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