| Modifying a sealed tube zinc reduction method for preparation of AMS graphite targets: Reducing background and attaining high precision X Xu, SE Trumbore, S Zheng, JR Southon, KE McDuffee, M Luttgen, ... Nuclear Instruments and Methods in Physics Research Section B: Beam …, 2007 | 445 | 2007 |
| Seasonal dynamics and age of stemwood nonstructural carbohydrates in temperate forest trees AD Richardson, MS Carbone, TF Keenan, CI Czimczik, DY Hollinger, ... New Phytologist 197 (3), 850-861, 2013 | 426 | 2013 |
| Age, allocation and availability of nonstructural carbon in mature red maple trees MS Carbone, CI Czimczik, TF Keenan, PF Murakami, N Pederson, ... New Phytologist 200 (4), 1145-1155, 2013 | 228 | 2013 |
| Recent (< 4 year old) leaf litter is not a major source of microbial carbon in a temperate forest mineral soil C Kramer, S Trumbore, M Fröberg, LMC Dozal, D Zhang, X Xu, ... Soil Biology and Biochemistry 42 (7), 1028-1037, 2010 | 156 | 2010 |
| Long-term controls on soil organic carbon with depth and time: A case study from the Cowlitz River Chronosequence, WA USA CR Lawrence, JW Harden, X Xu, MS Schulz, SE Trumbore Geoderma 247, 73-87, 2015 | 153 | 2015 |
| The Keck Carbon Cycle AMS laboratory, University of California, Irvine: initial operation and a background surprise J Southon, G Santos, K Druffel-Rodriguez, E Druffel, S Trumbore, X Xu, ... Radiocarbon 46 (1), 41-49, 2004 | 150 | 2004 |
| Distribution and mixing of old and new nonstructural carbon in two temperate trees AD Richardson, MS Carbone, BA Huggett, ME Furze, CI Czimczik, ... New Phytologist 206 (2), 590-597, 2015 | 148 | 2015 |
| Isotopic measurements of atmospheric methane in Los Angeles, California, USA: Influence of “fugitive” fossil fuel emissions A Townsend‐Small, SC Tyler, DE Pataki, X Xu, LE Christensen Journal of Geophysical Research: Atmospheres 117 (D7), 2012 | 148 | 2012 |
| The effect of fire and permafrost interactions on soil carbon accumulation in an upland black spruce ecosystem of interior Alaska: Implications for post‐thaw carbon loss JA O'DONNELL, JW Harden, AD McGUIRE, MZ Kanevskiy, MT Jorgenson, ... Global Change Biology 17 (3), 1461-1474, 2011 | 143 | 2011 |
| Diurnal tracking of anthropogenic CO2 emissions in the Los Angeles basin megacity during spring 2010 S Newman, S Jeong, ML Fischer, X Xu, CL Haman, B Lefer, S Alvarez, ... Atmospheric Chemistry and Physics 13 (8), 4359-4372, 2013 | 140 | 2013 |
| Regional patterns of radiocarbon and fossil fuel‐derived CO2 in surface air across North America DY Hsueh, NY Krakauer, JT Randerson, X Xu, SE Trumbore, JR Southon Geophysical Research Letters 34 (2), 2007 | 134 | 2007 |
| Preservation of terrestrial organic carbon in marine sediments offshore Taiwan: mountain building and atmospheric carbon dioxide sequestration SJ Kao, RG Hilton, K Selvaraj, M Dai, F Zehetner, JC Huang, SC Hsu, ... Earth Surface Dynamics 2 (1), 127-139, 2014 | 133 | 2014 |
| Benthic fluxes and pore water studies from sediments of the central equatorial north Pacific: Nutrient diagenesis WM Berelson, DE Hammond, D O'neill, XM Xu, C Chin, J Zukin Geochimica et Cosmochimica Acta 54 (11), 3001-3012, 1990 | 129 | 1990 |
| Estimating US fossil fuel CO2 emissions from measurements of 14C in atmospheric CO2 S Basu, SJ Lehman, JB Miller, AE Andrews, C Sweeney, KR Gurney, X Xu, ... Proceedings of the National Academy of Sciences 117 (24), 13300-13307, 2020 | 104 | 2020 |
| High Arctic wetting reduces permafrost carbon feedbacks to climate warming M Lupascu, JM Welker, U Seibt, K Maseyk, X Xu, CI Czimczik Nature Climate Change 4 (1), 51-55, 2014 | 104 | 2014 |
| Asian summer monsoonal variations during the Holocene revealed by Huguangyan maar lake sediment record X Wu, Z Zhang, X Xu, J Shen Palaeogeography, Palaeoclimatology, Palaeoecology 323, 13-21, 2012 | 103 | 2012 |
| Blank assessment for ultra-small radiocarbon samples: chemical extraction and separation versus AMS GM Santos, JR Southon, NJ Drenzek, LA Ziolkowski, E Druffel, X Xu, ... Radiocarbon 52 (3), 1322-1335, 2010 | 100 | 2010 |
| Greenhouse gas emissions from diverse Arctic Alaskan lakes are dominated by young carbon CD Elder, X Xu, J Walker, JL Schnell, KM Hinkel, A Townsend-Small, ... Nature Climate Change 8 (2), 166-171, 2018 | 99 | 2018 |
| Small thaw ponds: an unaccounted source of methane in the Canadian High Arctic K Negandhi, I Laurion, MJ Whiticar, PE Galand, X Xu, C Lovejoy PLoS One 8 (11), e78204, 2013 | 98 | 2013 |
| A comparison of tracer methods for quantifying CO2 sources in an urban region S Djuricin, DE Pataki, X Xu Journal of Geophysical Research: Atmospheres 115 (D11), 2010 | 90 | 2010 |
