Andrew Schauer

Andy is a Research Scientist / Engineer Senior and IsoLab manager and has been serving in such capacity since 2008. He repairs, cleans, codes, teaches, writes, tinkers, questions, bikes, and tries. He came from the Ehleringer Lab and SIRFER where he served as a laboratory technician on the atmospheric CO₂ / carbon cycling project.

Andy is currently serving on the Department of Earth and Space Sciences Safety Committee.

Google Scholar Profile

IsoLab Publications

• Bershaw J, Hansen DD, Schauer AJ. (2020). Deuterium excess and ¹⁷O-excess variability in meteoric water across the Pacific Northwest, USA. Tellus B: Chemical and Physical Meteorology 72:1, 1-17. doi: 10.1080/16000889.2020.1773722
• Mering J, Barker S, Huntington KW, Simmons S, Dipple G, Andrew B, Schauer A. (2019) Taking the temperature of hydrothermal ore deposits using clumped isotope thermometry. Economic Geology 113 (8): 1671-1678. doi: 10.5382/econgeo.2018.4608.
• Page M, Licht A, Dupont-Nivet G, Meijer N, Barbolini N, Hoorn C, Schauer A, Huntington K, Bajnai D, Fiebig J, Mulch A, Guo Z. (2019) Synchronous cooling and decline in monsoonal rainfall in northeastern Tibet during the fall into the Oligocene icehouse. Geology doi: 10.1130/G45480.1.
• Petersen SV, Defliese WF, Saenger C, Daëron M, John CM, Huntington KW, Kelson JR, Bernasconi SM, Colman AS, Kluge T, Olack GA, Schauer AJ, Bajnai D, Bonifacie M, Breitenbach SFM, Fiebig J, Fernandez AB, Henkes GA, Hodell D, Katz A, Kele S, Lohmann KC, Passey BH, Peral M, Petrizzo DA, Rosenheim BE, Tripati A, Venturelli R, Young ED, Wacker U and Winkelstern IZ (2019) Effects of improved 17O correction on interlaboratory agreement in clumped isotope calibrations, estimates of mineral‐specific offsets, and temperature dependence of acid digestion fractionation. Geochemistry, Geophysics, Geosystems 20, 3495–3519. doi: 10.1029/2018GC008127.
• Wang W, Nelson DD, Dettman DL, McManus JB, Quade J, Huntington KW, Schauer AJ, Sakai S. (2019) Rapid and Precise Analysis of Carbon Dioxide Clumped Isotopic Composition by Tunable Infrared Laser Differential Spectroscopy. Analytical Chemistry doi: 10.1021/acs.analchem.9b04466.
• Lechler AR, Huntington KW, Breecker DO, Sweeney MR, Schauer AJ. (2018) Carbonate clumped isotope record of LGM-Holocene climate change in the Palouse loess, USA. Quaternary Research, doi: 10.1017/qua.2018.47.
• Geng L, Murray LT, Mickley LJ, Lin P, Fu Q, Schauer AJ, Alexander B. (2017) Isotopic evidence of multiple controls on atmospheric oxidants over climate transitions. Nature 546, 133–136. doi: 10.1038/nature22340.
• Kelson JR, Huntington KW, Schauer AJ, Saenger C, Lechler A. (2017) Towards a universal carbonate clumped isotope calibration: diverse synthesis and preparatory methods suggest a single temperature relationship. Geochimica et Cosmochimica Acta 197, 104-131. doi: 10.1016/j.gca.2016.10.010.
• Licht A, Quade J, Kowler A, De Los Santos M, Hudson A, Schauer AJ, Huntington KW, Copeland P, Lawton T. (2017) Impact of the North American monsoon on isotope paleoaltimeters: implications for the paleoaltimetry of the American Southwest. American Journal of Science 317, 1-33. doi: 10.2475/01.2017.01.
• Chen Q, Geng L, Schmidt JA, Xie Z, Kang H, Dachs J, Cole-Dai J, Schauer AJ, Camp MG, Alexander B, (2016) Isotopic constraints on the role of hypohalous acids in sulfate aerosol formation in the remote marine boundary layer. Atmospheric Chemistry and Physics 16, 11433-11450. doi: 10.5194/acp-16-11433-2016.
• Schauer AJ, Kelson J, Saenger C, Huntington KW. (2016) Choice of 17O correction affects clumped isotope (D47) values of CO₂ measured with mass spectrometry. Rapid Communications in Mass Spectrometry 30, 2607-2616. doi: 10.1002/rcm.7743.
• Schauer AJ, Schoenemann SW, Steig EJ. (2016) Routine high-precision analysis of triple water-isotope ratios using cavity ring-down spectroscopy. Rapid Communications in Mass Spectrometry 30, 2059–2069. doi: 10.1002/rcm.7682.
• Zatko M, Erbland J, Savarino J, Geng L, Easley L, Schauer AJ, Bates T, Quinn PK, Light B, Morison D, Osthoff HD, Lyman S, Neff W, Yuan B, Alexander B, (2016) The magnitude of the snow-sourced reactive nitrogen flux to the boundary layer in the Uintah Basin, Utah, USA. Atmospheric Chemistry and Physics 16, 13837-13851. doi: 10.5194/acp-16-13837-2016.
• Geng L, Zatko MC, Alexander B, Fudge TJ, Schauer AJ, Murray LT, Mickley LJ. (2015) Effects of post-depositional processing on nitrogen isotopes of nitrate in the Greenland Ice Sheet Project 2 ice core. Geophysical Research Letters 42, 5346–5354. doi: 10.1002/2015GL064218.
• Stüeken EE, Buick R, Schauer AJ (2015) Nitrogen isotope evidence for alkaline lakes on late Archean continents. Earth and Planetary Science Letters 411, 1-10. doi: 10.1016/j.epsl.2014.11.037.
• Carré M, Sachs JP, Purca S, Schauer AJ, Braconnot P, Falcón RA, Julien M, Lavallée D. (2014) Holocene history of ENSO variance and asymmetry in the eastern tropical Pacific. Science 345. doi: 10.1126/science.1252220.
• Geng L, Alexander B,, Cole-Dai J, Steig EJ, Savarino J, Sofen ED, Schauer AJ. (2014) Nitrogen isotopes in ice core nitrate linked to anthropogenic atmospheric acidity change. Proceedings of the National Academy of Sciences 111. doi: 10.1073/pnas.1319441111.
• Geng L, Cole-Dai JH, Alexander B,, Savarino J, Schauer AJ, Steig EJ, Lin P, Fu Q, Zatko MC. (2014) On the origin of the occasional springtime nitrate concentration maximum in Greenland snow. Atmospheric Chemistry and Physics 14. doi: 10.5194/acp-14-13361-2014.
• Schoenemann SW, Steig EJ, Ding Q, Markle BR, Schauer AJ (2014) Triple water-isotopologue record from WAIS Divide, Antarctica: Controls on glacial-interglacial changes in 17O-excess of precipitation. Journal of Geophysical Research Atmospheres 119. doi: 10.1002/2014JD021770.
• Sofen ED, Alexander B, Steig EJ, Thiemens MH, Kunasek SA, Amos HM, Schauer AJ, Hastings MG, Bautista J, Jackson TL, Vogel LE, McConnell JR, Pasteris DR, Saltzman ES. (2014) WAIS Divide ice core suggests sustained changes in the atmospheric formation pathways of sulfate and nitrate since the 19th century in the extratropical Southern Hemisphere. Atmospheric Chemistry and Physics 14. doi: 10.5194/acp-14-5749-2014.
• Steig EJ, Gkinis V, Schauer AJ, Schoenemann SW, Samek K, Hoffnagle J, Dennis KJ, Tan SM. (2014) Calibrated high-precision 17O-excess measurements using cavity ring-down spectroscopy with laser-current-tuned cavity resonance. Atmospheric Measurement Techniques 7. doi: 10.5194/amt-7-2421-2014.
• Schoenemann SW, Schauer AJ, Steig EJ. (2013) Measurement of SLAP2 and GISP δ17O and proposed VSMOW-SLAP normalization for δ17O and 17Oexcess. Rapid Communications in Mass Spectrometry 27, 582–590. doi: 10.1002/rcm.6486.
• Schauer AJ, Kunasek SA, Sofen ED, Erbland J, Savarino J, Johnson BW, Amos HM, Shaheen R, Abaunza M, Jackson TL, Thiemens MH, Alexander B. (2012) Oxygen isotope exchange with quartz during pyrolysis of silver sulfate and silver nitrate. Rapid Communications in Mass Spectrometry 26. doi: 10.1002/rcm.6332.
• Carré M, Azzoug M, Bentaleb I, Chase BM, Fontugne M, Jackson D, Ledru M-P, Maldonado A, Sachs JP, Schauer AJ. (2011) Mid-Holocene mean climate in the south-eastern Pacific and its influence on South America. Quaternary International 253. doi: 10.1016/j.quaint.2011.02.004.
• Costa AW, Michalski G, Schauer AJ, Alexander B, Steig EJ, Shepson PB. (2011) Analysis of atmospheric inputs of nitrate to a temperate forest ecosystem from Δ¹⁷O isotope ratio measurements. Geophysical Research Letters 38. doi: 10.1029/2011GL047539.
• Tobin TS, Schauer AJ, Lewarch E. (2011) Alteration of micromilled carbonate δ¹⁸O during Kiel Device analysis. Rapid Communications in Mass Spectrometry. 25: 2149-2152. doi: 10.1002/rcm.5093.