Browsing by Author Schaefer, H

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Showing results 1 to 13 of 13
Issue DateTitleAuthor(s)
24-Apr-200914CH4 measurements in Greenland ice: investigating last glacial termination CH4 sourcesPetrenko, VV; Smith, AM; Brook, EJ; Lowe, DC; Riedel, K; Brailsford, G; Hua, Q; Schaefer, H; Reeh, N; Weiss, RF; Etheridge, DM; Severinghaus, JP
1-Mar-2013High-precision C-14 measurements demonstrate production of in situ cosmogenic (CH4)-C-14 and rapid loss of in situ cosmogenic (CO)-C-14 in shallow Greenland firnPetrenko, VV; Severinghaus, JP; Smith, AM; Riedel, K; Baggenstos, D; Harth, CM; Orsi, AJ; Hua, Q; Franz, P; Takeshita, Y; Brailsford, G; Weiss, RF; Buizert, C; Dickson, A; Schaefer, H
3-Dec-2012High-precision measurements of 14C in ice cores: results and future prospectsPetrenko, VV; Severinghaus, JP; Smith, AM; Schaefer, H; Riedel, K; Brook, EJ; Buizert, C; Baggenstos, D; Harth, CM; Hua, Q; Orsi, AJ; Bauska, TK; Schilt, A; Mitchell, L; Faïn, X; Takeshita, Y; Lee, JE; Brailsford, G; Franz, P; Weiss, RF; Dickson, A
1-Dec-2015Ice core measurements of 14CH4 constrain the sources of atmospheric methane increase during abrupt warming events of the last deglaciationPetrenko, VV; Severinghaus, JP; Smith, AM; Riedel, K; Brook, EJ; Schaefer, H; Baggenstos, D; Harth, CM; Hua, Q; Dyonisius, MN; Buizert, C; Schilt, A; Faïn, X; Mitchell, L; Bauska, TK; Orsi, AJ; Weiss, RF
12-Apr-2015Ice core measurements of 14CH4 show no evidence of methane release from methane hydrates or old permafrost carbon during a large warming event 11,600 years agoPetrenko, VV; Severinghaus, JP; Smith, AM; Riedel, K; Brook, EJ; Schaefer, H; Battenstos, D; Harth, CM; Hua, Q; Buizert, C; Schilt, A; Faïn, X; Mitchell, L; Bauska, TK; Orsi, AJ
7-Mar-2016Ice core measurements of 14CH4 show no evidence of methane release to atmosphere from methane hydrates during a large warming event 11,600 years agoPetrenko, VV; Severinghaus, JP; Smith, AM; Riedel, K; Brook, EJ; Schaefer, H; Baggenstos, D; Harth, CM; Hua, Q; Buizert, C; Schift, A; Faïn, X; Mitchell, L; Bauska, TK; Orsi, AJ; Weiss, RF
Mar-2008Instruments and methods: a novel method for obtaining very large ancient air samples from ablating glacial ice for analyses of methane radiocarbonPetrenko, VV; Severinghaus, JP; Brook, EJ; Muhle, J; Headly, M; Harth, CM; Schaefer, H; Reeh, N; Weiss, RF; Lowe, DC; Smith, AM
15-Mar-2016Measurements of 14C in ancient ice from Taylor Glacier, Antarctica constrain in situ cosmogenic 14CH4 and 14CO production ratesPetrenko, VV; Severinghaus, JP; Schaefer, H; Smith, AM; Kuhl, TW; Baggenstos, D; Hua, Q; Brook, EJ; Rose, P; Kulin, R; Bauska, TK; Harth, CM; Buizert, C; Orsi, AJ; Emanuele, G; Lee, JE; Brailsford, G; Keeling, R; Weiss, RF
15-Dec-2008Measurements of carbon-14 of methane in Greenland ice: investigating methane sources during the Last Glacial TerminationPetrenko, VV; Smith, AM; Severinghaus, JP; Brook, EJ; Lowe, DC; Riedel, K; Brailsford, G; Hua, Q; Reeh, N; Schaefer, H; Weiss, RF; Etheridge, DM
3-Sep-2010Methane from the east Siberian Arctic ShelfPetrenko, VV; Etheridge, DM; Weiss, RF; Brook, EJ; Schaefer, H; Severinghaus, JP; Smith, AM; Lowe, DC; Hua, Q; Riedel, K
24-Aug-2017Minimal geological methane emissions during the Younger Dryas–Preboreal abrupt warming eventPetrenko, VV; Smith, AM; Schaefer, H; Riedel, K; Brook, EJ; Baggenstos, D; Harth, CM; Hua, Q; Buizert, C; Schilt, A; Faïn, X; Mitchell, L; Bauska, TK; Orsi, AJ; Weiss, RF; Severinghaus, JP
19-Dec-2014New measurements of 14C provide constraints on sources of a large atmospheric methane increase during the Younger Dryas-Preboreal Abrupt Warming EventPetrenko, VV; Severinghaus, JP; Smith, AM; Riedel, K; Brook, EJ; Schaefer, H; Baggenstos, D; Harth, CM; Hua, Q; Buizert, C; Schilt, A; Faïn, X; Mitchell, L; Bauska, TK; Orsi, AJ; Weiss, RF
16-Dec-2022Using measurements of atmospheric 14CO in a global network to improve understanding of OH spatial and temporal variability.Petrenko, VV; Crosier, EM; Smith, AM; Yang, B; Scholer, M; McCrea, K; Murray, LT; Colton, A; Thomas, B; Talamoa, G; Musick, R; Schaefer, H; Moss, RC; Spain, G; Yann, H; Hernandez, P; Blades, E; Chewitt-Lucas, RM; Kazemi, R; Stock, MP