A 21st-century shift from fossil-fuel to biogenic methane emissions indicated by 13CH4 H Schaefer, SEM Fletcher, C Veidt, KR Lassey, GW Brailsford, ... Science 352 (6281), 80-84, 2016 | 436 | 2016 |
Rising methane: A new climate challenge SEM Fletcher, H Schaefer Science 364 (6444), 932-933, 2019 | 151 | 2019 |
Carbon isotopes characterize rapid changes in atmospheric carbon dioxide during the last deglaciation TK Bauska, D Baggenstos, EJ Brook, AC Mix, SA Marcott, VV Petrenko, ... Proceedings of the National Academy of Sciences 113 (13), 3465-3470, 2016 | 142 | 2016 |
14CH4 measurements in Greenland ice: investigating last glacial termination CH4 sources VV Petrenko, AM Smith, EJ Brook, D Lowe, K Riedel, G Brailsford, Q Hua, ... Science 324 (5926), 506-508, 2009 | 120 | 2009 |
Minimal geological methane emissions during the Younger Dryas–Preboreal abrupt warming event VV Petrenko, AM Smith, H Schaefer, K Riedel, E Brook, D Baggenstos, ... Nature 548 (7668), 443-446, 2017 | 105 | 2017 |
Ice record of δ13C for atmospheric CH4 across the Younger Dryas-Preboreal transition H Schaefer, MJ Whiticar, EJ Brook, VV Petrenko, DF Ferretti, ... Science 313 (5790), 1109-1112, 2006 | 98 | 2006 |
Gas records from the West Greenland ice margin covering the Last Glacial Termination: a horizontal ice core VV Petrenko, JP Severinghaus, EJ Brook, N Reeh, H Schaefer Quaternary Science Reviews 25 (9-10), 865-875, 2006 | 75 | 2006 |
Constraining past global tropospheric methane budgets with carbon and hydrogen isotope ratios in ice M Whiticar, H Schaefer Philosophical Transactions of the Royal Society A: Mathematical, Physical …, 2007 | 68 | 2007 |
Isotopic constraints on marine and terrestrial N2O emissions during the last deglaciation A Schilt, EJ Brook, TK Bauska, D Baggenstos, H Fischer, F Joos, ... Nature 516 (7530), 234-237, 2014 | 51 | 2014 |
Interlaboratory comparison of δ13C and δD measurements of atmospheric CH4 for combined use of data sets from different laboratories T Umezawa, CAM Brenninkmeijer, T Röckmann, C Van Der Veen, ... Atmospheric Measurement Techniques 11 (2), 1207-1231, 2018 | 45 | 2018 |
On the causes and consequences of recent trends in atmospheric methane H Schaefer Current Climate Change Reports 5, 259-274, 2019 | 43 | 2019 |
Potential glacial‐interglacial changes in stable carbon isotope ratios of methane sources and sink fractionation H Schaefer, MJ Whiticar Global Biogeochemical Cycles 22 (1), 2008 | 28 | 2008 |
Atmospheric gas records from Taylor Glacier, Antarctica, reveal ancient ice with ages spanning the entire last glacial cycle D Baggenstos, TK Bauska, JP Severinghaus, JE Lee, H Schaefer, ... Climate of the Past 13 (7), 943-958, 2017 | 22 | 2017 |
Enrichment in 13C of atmospheric CH4 during the Younger Dryas termination JR Melton, H Schaefer, MJ Whiticar Climate of the Past 8 (4), 1177-1197, 2012 | 22 | 2012 |
A novel method for obtaining very large ancient air samples from ablating glacial ice for analyses of methane radiocarbon VV Petrenko, JP Severinghaus, EJ Brook, J Mühle, M Headly, CM Harth, ... Journal of Glaciology 54 (185), 233-244, 2008 | 21 | 2008 |
Measurements of 14C in ancient ice from Taylor Glacier, Antarctica constrain in situ cosmogenic 14CH4 and 14CO production rates VV Petrenko, JP Severinghaus, H Schaefer, AM Smith, T Kuhl, ... Geochimica et Cosmochimica Acta 177, 62-77, 2016 | 20 | 2016 |
On the suitability of partially clathrated ice for analysis of concentration and δ13C of palaeo-atmospheric CO2 H Schaefer, A Lourantou, J Chappellaz, D Lüthi, B Bereiter, JM Barnola Earth and planetary science letters 307 (3-4), 334-340, 2011 | 20 | 2011 |
Measurement of stable carbon isotope ratios of methane in ice samples H Schaefer, MJ Whiticar Organic geochemistry 38 (2), 216-226, 2007 | 19 | 2007 |
Ice stratigraphy at the Pakitsoq ice margin, West Greenland, derived from gas records H Schaefer, VV Petrenko, EJ Brook, JP Severinghaus, N Reeh, JR Melton, ... Journal of Glaciology 55 (191), 411-421, 2009 | 17 | 2009 |
Methane from the east siberian arctic shelf VV Petrenko, DM Etheridge, RF Weiss, EJ Brook, H Schaefer, ... Science 329 (5996), 1146-1147, 2010 | 15 | 2010 |