Atmospheric d13C and dD measurements to balance the global methane budget:
Gespeichert in:
| 1. Verfasser: | |
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| Format: | Buch |
| Sprache: | German |
| Veröffentlicht: |
1998
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| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | Heidelberg, Univ., Diss., 1998 |
| Beschreibung: | 140 S. graph. Darst., Kt. |
Internformat
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| 245 | 1 | 0 | |a Atmospheric d13C and dD measurements to balance the global methane budget |c [vorgelegt von Thomas Marik] |
| 246 | 1 | 3 | |a Atmospheric delta 13 C and deltaD measurements to balance the global methane budget |
| 264 | 1 | |c 1998 | |
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Datensatz im Suchindex
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CONTENTS
1 INTRODUCTION
1.1 TIME RECORDS OF METHANE MEASUREMENTS.
1.2 METHANE BUDGET.
1.2.1 CHANGING GROWTH RATES OF CIU AND SOME EXPLANATIONS FOR
THIS OBSERVED PHENOMENON.
1.3 13C/12C AND D/II RATIO BUDGET IN ATMOSPHERIC METHANE.
1.1 ATMOSPHERIC 8
13C TIME SERIES FOR METHANE.
1.4.1 6I:!('H.I TIME SERIES FROM STEVENS [1993].
1.4.2
813CH4
TIME SERIES FROM QUAY ET AL. [1991].
1.4.3 5
13CH.| TIME SERIES FROM LOWE ET AL. [1997].
1.5 INFORMATION FROM 8D RECORDS OF ATMOSPHERIC METHANE.
1.6 MOTIVATION FOR THIS WORK.
2 SAMPLING AND PREPARATION
2.1 SAMPLING TECHNIQUE AT THE CLEAN-AIR STATIONS.
2.2 SAMPLE PREPARATION FOR THE METHANE ISOTOPE ANALYSIS .
2.2.1 FIRST ENRICHMENT ON ACTIVATED CHARCOAL.
2.2.2 SECOND ENRICHMENT.
2.2.3 GAS CHROMATOGRAPHY COMBINED WITH THE COMBUSTION OF METH
ANE TO C0
2 AND .
2.2.4 PREPARATION OF WATER.
2.3 QUALITY CONTROL.
2.3.1 BLANK TESTS.
2.3.2 METHANE LABORATORY STANDARDS.
2.3.3 PURE C02 STANDARDS FOR THE I13C MASS SPECTROMETER .
2.3.4 PURE H
2 STANDARDS FOR THE 8D MASS SPECTROMETER.
2.3.5 INTERCALIBRATION WITH OTHER LABORATORIES.
2.4 CORRECTION FACTORS.
2.4.1 CORRECTION FACTOR FOR THE MIXING RATIOS.
BIBLIOGRAFISCHE INFORMATIONEN
HTTP://D-NB.INFO/954870107
2
CONTENTS
2.4.2 CORRECTION FACTORS FOR THE 8
13C VALUES . 44
2.4.3 CORRECTION OF THE 5D VALUES. 47
2.5 ERROR DISCUSSION .
CO
2.6 FURTHER DEVELOPMENTS.
3 METHANE AT CLEAN-AIR STATIONS
55
3.1 METHODS FOR THE DATA ANALYSIS.
55
3.2 RESULTS AND INTERPRETATION OF THE MEASUREMENTS. 56
3.2.1 INTERANNUAL TRENDS OF ATMOSPHERIC METHANE. 60
3.2.2 THE INFLUENCE OF CHANGING SOURCES ON TRENDS IN MIXING RATIO
AND ISOTOPIC COMPOSITION OF METHANE. 62
3.2.3 DETERMINATION OF THE FRACTIONATION BY THE SINKS BY MEANS OF
ATMOSPHERIC MEASUREMENTS. 65
3.2.4 SEASONAL CYCLES OF ATMOSPHERIC METHANE . 68
3.2.5 COMPARISON OF THE HEIDELBERG 5
13C DATA WITH RESULTS FROM
OTHER LABORATORIES. 70
3.3 MODELLING. 74
3.3.1 ST RUCTURE OF THE BOSCAGE-8 MODEL. '4
3.3.2 DATA INPUT AND BOX BOUNDARIES . 75
3.3.3 TRANSPORT CALIBRATION WITH SF
6. 76
3.3.4 PARAMETERS FOR METHANE SOURCES AND SINKS . 80
3.3.5 MODEL COMPARISON WITH THE RESULTS OF TM2. 82
3.3.6 ANALYSIS OF THE SEASONAL CYCLE OF METHANE USING BOSCAGE-8 84
3.3.7 SIMULATION OF LONG TERM TRENDS. 87
3.3.8 SENSITIVITY STUDIES. 98
3.4 CONCLUSION AND PROSPECTS. 102
A CHARACTERIZATION OF MAT 230C 105
A.L INFLUENCE OF THE BACKGROUND SIGNAL. 105
A.2 LONG-TIME STABILITY . 108
A.3 SMALL SAMPLE AMOUNTS. HI
A.4 CONCLUSION AND PROSPECTS. 112
B PREPARATION OF SMALL QUANTITIES OF WATER 113
C B ESCHREIBUNG DES STEUERPROGRAMMS 117
C.L INITIALISIERUNG. 118
C.1.1 FORMAT DER KONFIGURIERUNGSDATEI. 119
C.2 BEDIENUNG. 120
CONTENTS
3
C.2.1 STEUERUNG FIBER DAS STATUSFENSTER. 121
0.2.2 STEUERUNG DURCH TASKS. 122
0.3 SKRIPTSPRACHE. 123
ACKNOWLEDGEMENTS
230 |
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| illustrated | Illustrated |
| indexdate | 2024-10-09T16:03:31Z |
| institution | BVB |
| language | German |
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| physical | 140 S. graph. Darst., Kt. |
| publishDate | 1998 |
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| spelling | Marik, Thomas Verfasser aut Atmospheric d13C and dD measurements to balance the global methane budget [vorgelegt von Thomas Marik] Atmospheric delta 13 C and deltaD measurements to balance the global methane budget 1998 140 S. graph. Darst., Kt. txt rdacontent n rdamedia nc rdacarrier Heidelberg, Univ., Diss., 1998 Atmosphäre (DE-588)4003397-1 gnd rswk-swf Methan (DE-588)4169678-5 gnd rswk-swf Kreislauf (DE-588)4165608-8 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Atmosphäre (DE-588)4003397-1 s Methan (DE-588)4169678-5 s Kreislauf (DE-588)4165608-8 s DE-604 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=008340884&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Marik, Thomas Atmospheric d13C and dD measurements to balance the global methane budget Atmosphäre (DE-588)4003397-1 gnd Methan (DE-588)4169678-5 gnd Kreislauf (DE-588)4165608-8 gnd |
| subject_GND | (DE-588)4003397-1 (DE-588)4169678-5 (DE-588)4165608-8 (DE-588)4113937-9 |
| title | Atmospheric d13C and dD measurements to balance the global methane budget |
| title_alt | Atmospheric delta 13 C and deltaD measurements to balance the global methane budget |
| title_auth | Atmospheric d13C and dD measurements to balance the global methane budget |
| title_exact_search | Atmospheric d13C and dD measurements to balance the global methane budget |
| title_full | Atmospheric d13C and dD measurements to balance the global methane budget [vorgelegt von Thomas Marik] |
| title_fullStr | Atmospheric d13C and dD measurements to balance the global methane budget [vorgelegt von Thomas Marik] |
| title_full_unstemmed | Atmospheric d13C and dD measurements to balance the global methane budget [vorgelegt von Thomas Marik] |
| title_short | Atmospheric d13C and dD measurements to balance the global methane budget |
| title_sort | atmospheric d13c and dd measurements to balance the global methane budget |
| topic | Atmosphäre (DE-588)4003397-1 gnd Methan (DE-588)4169678-5 gnd Kreislauf (DE-588)4165608-8 gnd |
| topic_facet | Atmosphäre Methan Kreislauf Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=008340884&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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