DRI / DIRECTORY / NATHAN CHELLMAN
Nathan Chellman Profile Photo
Dr. Nathan Chellman
Assistant Research Professor, Snow and Ice Hydrologist
Phone 
775-673-7424
E-Mail 
Nathan.Chellman@dri.edu
Campus 
Reno Campus
Division 
Hydrologic Sciences

Keywords

Ice core, black carbon, paleoclimate

 

Publications
2023
Kruger, B. R., Hausner, M. B., Chellman, N. J., Weaver, M. R., Samburova, V., Khlystov, A. Y. (2023). Dissolved black carbon as a potential driver of surface water heating dynamics in wildfire-impacted regions: A case study from Pyramid Lake, NV, USA, Science of the Total Environment, 888, 164141, 10.1016/j.scitotenv.2023.164141

Plunkett, G., Sigl, M., McConnell, J. R., Pilcher, J., Chellman, N. J. (2023). The significance of volcanic ash in Greenland ice cores during the Common Era, Quaternary Science Reviews, 301, 107936, https://doi.org/10.1016/j.quascirev.2022.107936

Alt, M., Puseman, K., Lee, C., Pederson, G., McConnell, J. R., Chellman, N. J., McWethy, D. (2023). Organic layers preserved in ice patches: A new record of Holocene environmental change on the Beartooth Plateau, USA, The Holocene, 09596836231211877. SAGE Publications Ltd, 10.1177/09596836231211877

Eckhardt, S., Pisso, I., Evangeliou, N., Zwaaftink, C., Plach, A., McConnell, J. R., Sigl, M., Ruppel, M., Zdanowicz, C., Lim, S., Chellman, N. J., Opel, T., Meyer, H., Steffensen, J., Schwikowski, M., Stohl, A. (2023). Revised historical Northern Hemisphere black carbon emissions based on inverse modeling of ice core records, Nature Communications, 14 (1), 271, 10.1038/s41467-022-35660-0

Legrand, M., McConnell, J. R., Bergametti, G., Preunkert, S., Chellman, N. J., Desboeufs, K., Lestel, L., Plach, A., Stohl, A. (2023). Alpine-ice record of bismuth pollution implies a major role of military use during World War II, Scientific Reports, 13 (1), 1166, 10.1038/s41598-023-28319-3

Legrand, M., McConnell, J. R., Bergametti, G., Plach, A., Desboeufs, K., Chellman, N. J., Preunkert, S., Stohl, A. (2023). A Two-Fold Increase of Phosphorus in Alpine Ice Over the Twentieth Century: Contributions From Dust, Primary Biogenic Emissions, Coal Burning, and Pig Iron Production, Journal of Geophysical Research: Atmospheres, 128 (19), e2023JD039236. John Wiley & Sons, Ltd, https://doi.org/10.1029/2023JD039236

Zhai, S., Swanson, W., McConnell, J. R., Chellman, N. J., Opel, T., Sigl, M., Meyer, H., Wang, X., Jaeglé, L., Stutz, J., Dibb, J., Fujita, K., Alexander, B. (2023). Implications of Snowpack Reactive Bromine Production for Arctic Ice Core Bromine Preservation, Journal of Geophysical Research: Atmospheres, 128 (20), e2023JD039257. John Wiley & Sons, Ltd, https://doi.org/10.1029/2023JD039257

Thomas, E., Vladimirova, D., Tetzner, D., Emanuelsson, B., Chellman, N. J., Dixon, D., Goosse, H., Grieman, M., King, A., Sigl, M., Udy, D., Vance, T., Winski, D., Winton, V., Bertler, N., Hori, A., Laluraj, C., McConnell, J. R., Motizuki, Y., Takahashi, K., Motoyama, H., Nakai, Y., Schwanck, F., Simões, J., Lindau, F., Severi, M., Traversi, R., Wauthy, S., Xiao, C., Yang, J., Mosely-Thompson, E., Khodzher, T., Golobokova, L., Ekaykin, A. (2023). Ice core chemistry database: an Antarctic compilation of sodium and sulfate records spanning the past 2000 years, Earth Syst. Sci. Data, 15 (6), 2517-2532. Copernicus Publications, 10.5194/essd-15-2517-2023

McConnell, J. R., Brügger, S., Chellman, N. J. (2023). Ice core and marine records of Quaternary environmental change. Pollard, A. M., Armitage, R. A., Makarewicz, C. (Eds.) Chapter : . In Pollard, A. M., Armitage, R. A., Makarewicz, C. (Eds.), Handbook of Archaeological Sciences (2nd ed.). Wiley: Hoboken, NJ.

Chipps, A. G., Tunis, C. B., Chellman, N. J., McConnell, J. R., Hammer, B., Carr, C. E. (2023). Enabling Ice Core Science on Mars and Ocean Worlds, IEEE

Fain, X., Etheridge, D. M., Fourteau, K., Martinerie, P., Trudinger, C. M., Rhodes, R. H., Chellman, N. J., Lamgenfelds, R. L., McConnell, J. R., Curran, M. A., Brook, E. J., Blunier, T., Teste, G., Grilli, R., Lemoine, A., Sturges, W. T., Vanniere, B., Freitag, J., Chappelaz, J. (2023). Southern Hemisphere atmospheric history of carbon monoxide over the late Holocene reconstructed from multiple Antarctic ice cores, Clim. Past, 10.5194/cp-19-2287-2023

McConnell, J. R., Chellman, N. J., Wensman, S. M., Stanish, C., Stohl, A., Plach, A., Santibáñez, P. A., Brügger, S., Eckhardt, S., Freitag, J., Kipfstuhl, S. (2023). Hemispheric-scale heavy metal pollution from South American and Australian mining during the Common Era, Sci. Tot. Environ., 10.1016/j.scitotenv.2023.169431

Wriston, T. A., Chellman, N. J. (2023). Remote Sensing at Midas Cemetery: Using GPR and sUAS-Mounted Sensors to Find Graves, Midas, Elko County, NV, 87 pp., Sponsored by Friends of Midas.

2022
Brügger, S., Chellman, N. J., McConnell, C., McConnell, J. R. (2022). High-latitude fire activity of recent decades derived from microscopic charcoal and black carbon in Greenland ice cores, The Holocene, 10.1177/09596836221131711

Fain, X., Rhodes, R. H., Place, P., Petrenko, V. V., Fourteau, K., Chellman, N. J., Crosier, E., McConnell, J. R., Brook, E. J., Blunier, T., Legrand, M., Chappellaz, J. (2022). Northern Hemisphere atmospheric history of carbon monoxide since preindustrial times reconstructed from multiple Greenland ice cores, Clim. Past, 10.5194/cp-18-631-2022

Legrand, M., McConnell, J. R., Preunkert, S., Bergametti, G., Chellman, N. J., Desboeufs, K., Stohl, A., Eckhardt, S. (2022). Thallium pollution in Europe recorded in Alpine ice: Contributions from coal burning and cement production, Geophys. Res. Lett., 10.1029/2022GL098688

Thomas, E. R., Vladimirova, D. O., Tetzner, D. R., Emanuelsson, B. D., Chellman, N. J., Dixon, D. A., Goosse, H., Grieman, M. M., King, A. C., Sigl, M., Udy, D., Vance, T. R., Winski, D. A., Winton, V. H., Bertler, N. A., Hori, A., Laluraj, C. M., McConnell, J. R., Motizuki, Y., Takahashi, K., Motoyama, H., Nakai, Y., Schwanck, F., Simões, J. C., Gaudie Ley Lindau, F., Severi, M., Traversi, R., Wauthy, S., Xiao, C., Yang, J., Mosely-Thompson, E., Khodzer, T., Golobokova, L., Ekaykin, A. (2022). Ice core chemistry database: an Antarctic compilation of sodium and sulphate records spanning the past 2000 years, Earth Syst. Sci. Data, 10.5194/essd-2022-368

2021
Arienzo, M. M., Legrand, M., Preunkert, S., Stohl, A., Chellman, N. J., Eckhardt, S., Gleason, K., McConnell, J. R. (2021). Alpine Ice-Core Evidence of a Large Increase in Vanadium and Molybdenum Pollution in Western Europe During the 20th Century, Journal of Geophysical Research: Atmospheres, 126 (4), e2020JD033211, John Wiley & Sons, Ltd, https://doi.org/10.1029/2020JD033211

Legrand, M., McConnell, J. R., Preunkert, S., Chellman, N. J., Arienzo, M. M. (2021). Causes of Enhanced Bromine Levels in Alpine Ice Cores During the 20th Century: Implications for Bromine in the Free European Troposphere, Journal of Geophysical Research: Atmospheres, 126 (8), e2020JD034246, https://doi.org/10.1029/2020JD034246

Liu, P., Kaplan, J., Mickley, L., Li, Y., Chellman, N. J., Arienzo, M. M., Kodros, J., Pierce, J., Sigl, M., Freitag, J., Mulvaney, R., Curran, M. A., McConnell, J. R. (2021). Improved estimates of preindustrial biomass burning reduce the magnitude of aerosol climate forcing in the Southern Hemisphere, Science Advances, 7 (22), eabc1379. American Association for the Advancement of Science

Criscitiello, A., Geldsetzer, T., Rhodes, R., Arienzo, M. M., McConnell, J. R., Chellman, N. J., Osman, M., Yackel, J., Marshall, S. (2021). Marine Aerosol Records of Arctic Sea?ice and Polynya Variability from new Ellesmere and Devon Island Firn Cores, Nunavut, Canada, Journal of Geophysical Research: Oceans, e2021JC017205. Wiley Online Library

McConnell, J. R., Chellman, N. J., Mulvaney, R., Eckhardt, S., Stohl, A., Plunkett, G., Kipfstuhl, S., Freitag, J., Isaksson, E., Gleason, K. E., Brugger, S., McWethy, D., Abram, N., Liu, P., Aristarain, A. (2021). Hemispheric black carbon increase after the 13th-century M’ori arrival in New Zealand, Nature, 598 (7879), 82-85, 10.1038/s41586-021-03858-9

Osman, M., Smith, B., Trusel, L., Das, S., McConnell, J. R., Chellman, N. J., Arienzo, M. M., Sodemann, H. (2021). Abrupt Common Era hydroclimate shifts drive west Greenland ice cap change, Nature Geoscience, 14 (10), 756-761. Nature Publishing Group

Abbott, P. M., Plunkett, G., Corona, C., Chellman, N. J., McConnell, J. R., Pilcher, J. R., Stoffel, M., Sigl, M. (2021). Identification of cryptotephra from the Icelandic Veiðivötn 1477 CE eruption in a Greenland ice core: role in confirming the dating of volcanic events in the 1450s CE and assessing the eruption’s climatic impact, Clim. Past, 17 (2), 565-585, 10.5194/cp-17-565-2021

Ackermann, B., Lee, C. M., McWethy, D., Pederson, G., Chellman, N. J., McConnell, J. R. (2021). An Application of Ground-Penetrating Radar at a Greater Yellowstone Area Ice Patch, J. Glacial Archaeol., 5, 73-84, 10.1558/jga.19883

Chellman, N. J., McConnell, J. R. (2021). Linking lead pollution in ice cores to ancient history, Past Global Changes, PAGES Horizons, 1, 34-35, 10.22498/pages.horiz.1.34

Osman, M., Coats, S., Das, S. B., McConnell, J. R., Chellman, N. J. (2021). North Atlantic jet stream projections in the context of the past 1,250 years, Proc. Natl. Acad. Sci. U.S.A., 118 (38), Article No. e2104105118. 10.1073/pnas.2104105118

Zhai, S., Wang, X., McConnell, J. R., Geng, L., Cole-Dai, J., Sigl, M., Chellman, N. J., Sherwen, T., Pound, R., Fujita, K., Hattori, S., Moch, J. M., Zhu, L., Evans, M., Legrand, M., Liu, P., Pasteris, D., Chan, Y., Murray, L. T., Alexander, B. (2021). Anthropogenic impacts on tropospheric reactive chlorine since the preindustrial, Geophys. Res. Lett., 48 (14), Article No. e2021GL093808. 10.1029/2021GL093808

2020
Chellman, N. J., Csank, A., Gustin, M., Arienzo, M. M., Estrada, M., McConnell, J. R. (2020). Comparison of co-located ice-core and tree-ring mercury records indicates potential radial translocation of mercury in whitebark pine, Science of The Total Environment, 743, 140695. Elsevier

Legrand, M., McConnell, J. R., Lestel, L., Preunkert, S., Arienzo, M. M., Chellman, N. J., Stohl, A., Eckhardt, S. (2020). Cadmium pollution from zinc‐smelters up to fourfold higher than expected in western Europe in the 1980s as revealed by alpine ice, Geophysical Research Letters, 47 (10), e2020GL087537

Chellman, N. J., Pederson, G. T., Lee, C. M., McWeathy, D. B., Puseman, K., Stone, J. R., Brown, S. R., McConnell, J. R. (2020). High elevation ice patch documents Holocene climate variability in the northern Rocky Mountains, Quaternary Science Advances, 10.1016/j.qsa.2020.100021

McConnell, J. R., Sigl, M., Plunkett, G., Burke, A., Kim, W., Raible, C., Wilson, A. J., Manning, J. G., Ludlow, F., Chellman, N. J., Innes, H. M., Yang, Z., Larsen, J. F., Schaefer, J. R., Kipfstuhl, S., Mojtabavi, S., Wilhelms, F., Opel, T., Meyer, H., Steffensen, J. P. (2020). Extreme climate after massive eruption of Alaska’s Okmok volcano in 43 BC and its effects on the civil wars of the late Roman Republic, Proc Natl Acad Sci U.S.A., 10.1073/pnas.2002722117

Plunkett, G., Sigl, M., Pilcher, J. R., McConnell, J. R., Chellman, N. J., Steffensen, J. P. (2020). Smoking guns and volcanic ash: Are sparse tephras in Greenland ice cores meaningful?, Polar Research, 10.33265/polar.v39.3511

McConnell, J. R., Sigl, M., Plunkett, G., Wilson, A. I., Manning, J. G., Ludlow, F. M., Chellman, N. J. (2020). Reply to Strunz and Braeckel: Agricultural failures logically link historical events to extreme climate following the 43 BCE Okmok eruption, Proc Natl Acad Sci U.S.A., 10.1073/pnas.2019906117

Smith, V., Costa, A., Aguirre-Diaz, G., Pedrazzi, D., Scifo, A., Plunkett, G., Poret, M., Tournigand, P., Miles, D., Dee, M. W., McConnell, J. R., Sunye-Puchol, I., Davila Harris, P., Sigl, M., Pilcher, J. R., Chellman, N. J., Gutierrez, E. (2020). The magnitude and impact of the 431 CE Tierra Blanca Joven eruption of Ilopango, El Salvador, Proc Natl Acad Sci U.S.A., 10.1073/pnas.2003008117

2019
Gleason, K. E., McConnell, J. R., Arienzo, M. M., Chellman, N. J., Calvin, W. (2019). Four-fold increase in solar forcing on snow in western U.S. burned forests since 1999, Nature Communications, 10 (1), 2026, 10.1038/s41467-019-09935-y

Arienzo, M. M., McConnell, J. R., Chellman, N. J., Kipfstuhl, S. (2019). Method for Correcting Continuous Ice-Core Elemental Measurements for Under-Recovery, Environmental Science & Technology, 53 (10), 5887-5894, American Chemical Society, 10.1021/acs.est.9b00199

Preunkert, S., McConnell, J. R., Hoffmann, H., Legrand, M., Wilson, A., Eckhardt, S., Stohl, A., Chellman, N. J., Arienzo, M. M., Friedrich, R. (2019). Lead and Antimony in Basal Ice From Col du Dome (French Alps) Dated With Radiocarbon: A Record of Pollution During Antiquity, Geophysical Research Letters, 46 (9), 4953-4961, John Wiley & Sons, Ltd, 10.1029/2019GL082641

Arienzo, M. M., Maezumi, S., Chellman, N. J., Iriarte, J. (2019). Pre-Columbian Fire Management Linked to Refractory Black Carbon Emissions in the Amazon, Fire, 2 (2), 31. Multidisciplinary Digital Publishing Institute

McConnell, J. R., Chellman, N. J., Wilson, A. I., Stohl, A., Arienzo, M. M., Eckhardt, S., Fritzsche, D., Kipfstuhl, S., Opel, T., Place, P. F., Steffensen, J. P. (2019). Pervasive Arctic lead pollution suggests substantial growth in Medieval silver production modulated by plague, climate and conflict, Proc. Natl. Acad. Sci. U.S.A., 116 (30), 14910-14915, 10.1073/pnas.1904515116

2018
Chellman, N. J., McConnell, J. R., Heyvaert, A. C., Arienzo, M. M., Wennrich, V. (2018). Incandescence-based single-particle method for black carbon quantification in lake sediment cores, Limnology and Oceanography: Methods, 16 (11), 711-721. Wiley Online Library

Legrand, M., McConnell, J. R., Preunkert, S., Arienzo, M. M., Chellman, N. J., Gleason, K. E., Sherwen, T., Evans, M., Carpenter, L. (2018). Alpine ice evidence of a three-fold increase in atmospheric iodine deposition since 1950 in Europe due to increasing oceanic emissions, Proceedings of the National Academy of Sciences, 115 (48), 12136-12141. National Acad Sciences

McConnell, J. R., Wilson, A., Stohl, A., Arienzo, M. M., Chellman, N. J., Eckhardt, S., Thompson, E., Pollard, A., Steffensen, J. (2018). Lead pollution recorded in Greenland ice indicates European emissions tracked plagues, wars, and imperial expansion during antiquity, Proceedings of the National Academy of Sciences, 201721818. National Acad Sciences

Macdonald, K. M., Sharma, S., Toom, D., Chivulescu, A., Platt, A., Elsasser, M., Huang, L., Leaitch, R., Chellman, N. J., McConnell, J. R., Bozem, H., Kunkel, D., Lei, Y. D., Jeong, C., Abbatt, J. P., Evans, G. J. (2018). Temporally-delineated sources of major chemical species in high Arctic snow, Atmos. Chem. Phys., 18, 3485-3503, 10.5194/acp-18-3485-2018

Medley, B., McConnell, J. R., Neumann, T. A., Reijmer, C. H., Chellman, N. J., Sigl, M., Kipfstuhl, S. (2018). East Antarctic temperature & snowfall increasing faster than climate model projections, Geophys. Res. Lett., 45, 1472-1480, 10.1002/2017GL075992

2017
Maselli, O. J., Chellman, N. J., Grieman, M., Layman, L. R., McConnell, J. R., Pasteris, D. R., Rhodes, R. H., Saltzman, E., Sigl, M. (2017). Sea ice and pollution-modulated changes in Greenland ice core methanesulfonate and bromine, Climate of the Past, 13 (1), 39-59, 10.5194/cp-13-39-2017

Macdonald, K., Sharma, S., Toom, D., Chivulescu, A., Hanna, S., Bertram, A., Platt, A., Elsasser, M., Huang, L., Chellman, N. J., McConnell, J. R., Bozem, H., Kunkel, D., Lei, Y., Evans, G. J., Abbatt, J. (2017). Observations of atmospheric chemical deposition to high Arctic show, Atmos. Chem. Phys., 17, 5775-5788, 10.5194/acp-17-5775-2017

Mekhaldi, F., McConnell, J. R., Adolphi, F., Arienzo, M. M., Chellman, N. J., Maselli, O. J., Sigl, M., Muscheler, R. (2017). No nitrate spikes detectable in several polar ice cores following the largest known solar events, Geophysical Research Abstracts, 19
https://meetingorganizer.copernicus.org/EGU2017/EGU2017-14979-1.pdf

Arienzo, M. M., McConnell, J. R., Murphy, L., Chellman, N. J., Das, s., Das, s., Kipfstuhl, S., Mulvaney, R. (2017). Holocene black carbon in Antarctica paralleled Southern Hemisphere climate, Journal of Geophysical Research: Atmospheres, 122, 10.1002/2017JD026599

Chellman, N. J., McConnell, J. R., Arienzo, M. M., Pederson, G., Aarons, S., Csank, A. (2017). Reassessment of the Upper Fremont Glacier ice core chronologies by synchronizing ice core water isotopes to a nearby tree-ring chronology, Environmental Science & Technology, 51 (8), 4230-4238, 10.1021/acs.est.6b06574

Mekhaldi, F., McConnell, J. R., Adophi, R., Arienzo, M. M., Chellman, N. J., Maselli, O. J., Moy, A., Plummer, A. D., Sigl, M., Muscheler, R. (2017). No coincident nitrate enhancement events in polar ice cores following the largest known solar storms, Journal of Geophysical Research: Atmospheres, 122, https://doi.org/10.1002/2017JD027325

McConnell, J. R., Burke, A., Dunbar, N. W., Köhler, P., Thomas, J. L., Arienzo, M. M., Chellman, N. J., Maselli, O. J., Sigl, M., Adkins, J. F., Baggenstos, D., Burkhart, J. F., Brook, E. J., Buizert, C., Cole-Dai, J., Fleet, L. G., Fudge, T. J., Knorr, G., Graf, H. F., Grieman, M. M., Iverson, N., McGwire, K. C., Mulvaney, R., Paris, G., Rhodes, R. H., Saltzman, E. S., Severinghaus, J. P., Steffensen, J. P., Taylor, K. C., Winckler, G. (2017). Synchronous volcanic eruptions and abrupt climate change ~17.7ka plausibly linked by stratospheric ozone depletion, Proc. Natl. Acad. Sci. U.S.A., 114 (38), 10035-10040, 10.1073/pnas.1705595114

2016
Arienzo, M. M., McConnell, J. R., Chellman, N. J., Criscitiello, A., Curran, M., Fritzsche, D., Kipfstuhl, S., Mulvaney, R., Nolan, M., Opel, T., Sigl, M., Steffensen, J. P. (2016). A method for continuous 239Pu determinations in Arctic and Antarctic ice cores, Environmental Science & Technology, 50 (13), 7066-7073, 10.1021/acs.est.6b01108

Legrand, M., McConnell, J. R., Fischer, H., Wolff, E. W., Preunkert, S., Chellman, N. J., Leuenberger, D., Maselli, O. J., Sigl, M., Schüpbach, S., Flannigan, M. (2016). Boreal fire records in Northern Hemisphere ice cores: A review, Climate of the Past, 12 (10), 2033-2059, 10.5194/cp-12-2033-2016

Chellman, N. J., Hastings, M. G., McConnell, J. R. (2016). Increased nitrate and decreased δ15N-NO3- in the Greenland Arctic ater 1940 attributed to North American oil burning, The Cryosphere Discuss., 10.5194/tc-2016-163

2015
Sigl, M., Winstrup, M., McConnell, J. R., Welten, K. C., Plunkett, G., Ludlow, F., Büntgen, U., Caffee, M., Chellman, N. J., Dahl-Jensen, D., Fischer, H., Kipfstuhl, S., Kostick, C., Maselli, O. J., Mekhaldi, F., Mulvaney, R., Muscheler, R., Pasteris, D. R., Pilcher, J. R., Salzer, M., Schüpbach, S., Steffensen, J. P., Vinther, B., Woodruff, T. E. (2015). Timing and global climate forcing of volcanic eruptions during the past 2,500 years, Nature, 523 (7562), 543-549, 10.1038/nature14565

Conference Proceedings
2023
Improved Estimates of Biomass Burning Emissions from 1750 to 2010 using Ice Core Records and Inverse Modeling

Age scale and preliminary findings of the 2022 Mt. Logan ice core, southwest Yukon

Enabling Ice Core Science on Mars and Ocean Worlds

Michaud, A., Santibanez, P., Winski, D., Chellman, N. J., McConnell, J. R. (2023). Towards an effective method for melting ice cores for microbiological analysis. 2nd Annual US Ice Core Open Science Workshop: Seattle, WA, May 1, 2023

Wensman, S. M., Chellman, N. J., McConnell, J. R. (2023). Impacts of the Black Death on lead pollution sources: Insights from northwest Greenland ice. 2nd Annual US Ice Core Open Science Workshop: Seattle, WA, May 1, 2023

McCrimmon, D., Chellman, N. J., McConnell, J. R. (2023). Assessing the spatial variability of ammonium deposition across the Greenland ice sheet on regional and local scales to better inform forest fire reconstructions. 2nd Annual US Ice Core Open Science Workshop: Seattle, WA, May 1, 2023

Svensson, A., McConnell, J. R., Chellman, N. J., Wensman, S. M., Liu, P. (2023). Bipolar volcanic ice-core synchronization of the last glacial cycle. EGU General Assembly 2023: Vienna, Austria, April 24, 2023-April 28, 2023, Paper No. EGU23-6627, 10.5194/egusphere-egu23-6627

Wensman, S. M., Chellman, N. J., McCrimmon, D., Wilson, A., McConnell, J. R. (2023). 1100-year high-resolution ice-core record of Middle Ages and Early Modern lead provenance from NW Greenland reflect changing atmospheric emissions in response to societal events. AGU Fall Meeting: San Francisco, CA, December 11, 2023-December 15, 2023

2022
Wensman, S. M., Shiel, A. E., Chellman, N. J., Brügger, S., McConnell, J. R. (2022). Lead Isotopic Fingerprinting of Industrial (1750-2010) Pollution in Central Greenland Ice, American Geophysical Union: Chicago, IL, December 12, 2022-December 16, 2022

McCrimmon, D., Chellman, N. J., McConnell, J. R., Keegan, K. (2022). Spatial variability of ammonium deposition across the Greenland ice sheet and implications for past forest fire reconstructions, International Partnerships in Ice Core Science: Crans Montana, Switzerland, October 2, 2022-October 7, 2022

Wensman, S. M., Shiel, A., Chellman, N. J., Brügger, S., McConnell, J. R. (2022). Industrial Lead Pollution in Modern Central Greenland Ice, International Partnerships in Ice Core Science: Crans Montana, Switzerland, October 2, 2022-October 7, 2022

Abbott, P. M., McConnell, J. R., Chellman, N. J., Kipfstuhl, S., Horhold, M., Plunkett, G., Sigl, M. (2022). Mid to Late Holocene East Antarctic tephrochronology: Implications for reconstructing volcanic eruptions and their impacts over the last 5,500 years. European Geophysical Union: Vienna, Austria, May 23, 2022-May 27, 2022

Eckhardt, S., Pisso, I. J., Evangeliou, N., Zwaaftink, C. G., Plach, A., McConnell, J. R., Sigl, M., Ruppel, M., Zdanowicz, C., Lim, S., Chellman, N. J., Opel, T., Meyer, H., Steffensen, J., Schwikowski, M., Stohl, A. (2022). Revised Historical Black Carbon Emissions based on Atmospheric Modelling, Ice Core Records and an Inverse Algorithm, American Geophysical Union: Chicago, IL, December 12, 2022-December 16, 2022

McConnell, J. R., Chellman, N. J., Brügger, S., Wensman, S. M., McDonald, B., Wilson, A., Stohl, A., Osman, M., Opel, T., Kipfstuhl, S., Steffensen, J., Vinther, B., Spolaor, A., Barbante, C. (2022). Aerosols and Ancient History in Arctic Ice, International Partnerships in Ice Core Science: Crans Montana, Switzerland, October 2, 2022-October 7, 2022

McConnell, J. R., Sigl, M., Plunkett, G., Mastin, L., Chellman, N. J., Wensman, S. M., Brügger, S., McDonald, B., Burke, A., Kipfstuhl, S., Wilhelms, F., Opel, T., Meyer, H., Astrid Kjaer, H., Svensson, A., Steffensen, J., Raible, C., Wilson, A., Manning, J. (2022). Assessing impacts of explosive volcanism on climate and society at the end of the Roman Republic and Ptolemaic Kingdom, International Partnerships in Ice Core Science: Crans Montana, Switzerland, October 2, 2022-October 7, 2022

Fain, X., Rhodes, R., Etheridge, D., Place, P., Martinerie, P., Trudinger, C., Petrenko, V., Fourteau, K., Chellman, N. J., Crosier, E., Genfelds, R., Teste, G., McConnell, J. R., Brook, E., Blunier, T., Curran, M., Legrand, M., Sturges, W., Freitag, J., Vanniere, B., Chappellaz, J. (2022). History of atmospheric carbon monoxide over Greenland and Antarctica since preindustrial times, International Partnerships in Ice Core Science: Crans Montana, Switzerland, October 2, 2022-October 7, 2022

Sigl, M., Abbott, P., Adolphi, F., Albert, P., Chellman, N. J., Baillie, M., Burke, A., Cole-Dai, J., Cook, E., Davies, S., Gabriel, I., Helmick, M., Horhold, M., Innes, H., Jungclaus, J., Kruger, K., Nicolussi, K., Kurbatov, A., Lin, J., McConnell, J. R., Pearson, C., Plunkett, G., Salzer, M., Severi, M., Svensson, A., Timmreck, C., Tooey, M. (2022). Timing of Holocene volcanic eruptions and their radiative aerosol forcing, International Partnerships in Ice Core Science: Crans Montana, Switzerland, October 2, 2022-October 7, 2022

Chellman, N. J., McConnell, J. R., Pederson, G., Lee, C., McWethy, D., Beck, M., Brügger, S. (2022). Paleoclimate and morphological studies of semi-permanent ice patches from the Northern Rocky Mountains, International Partnerships in Ice Core Science: Crans Montana, Switzerland, October 2, 2022-October 7, 2022

Brügger, S., McWethy, D., Chellman, N. J., Whitlock, C., Prebble, M., Plach, A., Stohl, A., Courtney-Mustaphi, C., Mosher, S., McConnell, J. R. (2022). Quantifying paleofire emissions for Antarctic ice cores measured from black carbon in Southern Hemisphere lake sediments, International Partnerships in Ice Core Science: Crans Montana, Switzerland, October 2, 2022-October 7, 2022

Brügger, S., Chellman, N. J., Plach, A., Henne, P., Stohl, A., Vinther, B., Blunier, T., Wensman, S. M., McConnell, J. R. (2022). Microfossils in Greenland ice cores reveal high-latitude ecosystem responses to past climate and human impact, International Partnerships in Ice Core Science: Crans Montana, Switzerland, October 2, 2022-October 7, 2022

2021
Chellman, N. J., McConnell, J. R., Arienzo, M. M., Wennrich, V., Melles, M., Brigham-Grette, J. (2021). 1.5 million years of black carbon deposition from Lake El’gygytgyn, Northeast Arctic Russia. AGU Fall Meeting 2021: New Orleans, LA

Brugger, S., McWethy, D., Chellman, N. J., Whitlock, C., Eckhardt, S., Plach, A., Stohl, A., McConnell, J. R. (2021). Quantifying black carbon emissions from lake sediments near late 13th century Māori settlements. AGU Fall Meeting 2021: New Orleans, LA

Brugger, S., Chellman, N. J., Henne, P., Eckhardt, S., Plach, A., Stohl, A., McConnell, J. R. (2021). A Millennium of Human-Environmental Interactions Inferred from a Southern Greenland Ice Microfossil Record. The 5th International Frozen Past: Glacial & Ice Patch Archaeology Conference: Chico Hot Springs, MT

Brugger, S., McWethy, D., Chellman, N. J., Eckhardt, S., Stohl, A., Whitlock, C., McConnell, J. R. (2021). Black carbon emissions from lake sediments near late 13th century Mãori settlements: Constraining a major black carbon source to Antarctica. The 5th International Frozen Past: Glacial & Ice Patch Archaeology Conference: Chico Hot Springs, MT

McConnell, J. R., Chellman, N. J., Brugger, S., Wensam, S., McDonald, B., Stohl, A. (2021). Industrial Aerosols and Ancient History in Arctic Ice. The 5th International Frozen Past: Glacial & Ice Patch Archaeology Conference: Chico Hot Springs, MT

Chellman, N. J., McConnell, J. R., Pederson, G. T., Lee, C. M., McWethy, D. B., Beck, M., Brugger, S. (2021). Holocene paleoclimate and ground penetrating radar studies of two ice patches on the Beartooth Plateau. The 5th International Frozen Past: Glacial & Ice Patch Archaeology Conference: Chico Hot Springs, MT

Liu, P., Kaplan, J., Mickley, L., Li, Y., Chellman, N. J., Arienzo, M. M., Kodros, J., Pierce, J., Sigl, M., Freitag, J., Mulvaney, R., Curran, M., McConnell, J. R. (2021). Improved estimates of preindustrial biomass burning reduce the magnitude of aerosol climate forcing in the Southern Hemisphere. AGU Fall Meeting 2021: New Orleans, LA

McConnell, J. R., Sigl, M., Plunkett, G., Chellman, N. J., Manning, J. G. (2021). Records of explosive volcanism in ice: Assessing impacts on climate and society. The 5th International Frozen Past: Glacial & Ice Patch Archaeology Conference: Chico Hot Springs, MT

Stahle, D., Pederson, G., McWethy, D., Lee, C., Chellman, N. J., McConnell, J. R. (2021). A forest entombed in ice: A unique record of mid-Holocene climate and ecosystem change. The 5th International Frozen Past: Glacial & Ice Patch Archaeology Conference: Chico Hot Springs, MT

McConnell, J. R., Chellman, N. J., Mulvaney, R., Eckhardt, S., Stohl, A., Plunkett, G., Kipfstuhl, S., Freitag, J., Isaksson, E., Gleason, K. E., Brugger, S. O., McWethy, D. B., Abram, N. J., Liu, P., Aristarain, A. J. (2021). Persistent, three-fold higher black carbon concentrations over the northern Antarctic Peninsula and Southern Ocean following late 13th C settlement of New Zealand. AGU Fall Meeting 2021: New Orleans, LA, Invited presentation.

Zhai, S., Wang, X., McConnell, J. R., Swanson, W., Sherwen, T., Pound, R., Chellman, N. J., Zhu, L., Evans, M., Opel, T., Sigl, M., Hattori, S., Fujita, K., Chan, Y., Alexander, B. (2021). Impacts of Anthropogenic Emissions on Tropospheric Reactive Bromine since the Preindustrial. AGU Fall Meeting 2021: New Orleans, LA

2020
Brügger, S., Chellman, N. J., Arienzo, M. M., Stohl, A., Eckhardt, S., McConnell, J. R. (2020). Human-environmental interactions in the Arctic inferred from microfossils in Central Greenland ice, Eos Trans. AGU, Fall Meet. Suppl.,, Abstract B080-0018

Brügger, S., Chellman, N. J., Arienzo, M. M., Stohl, A., Eckhardt, S., Blunier, T., McConnell, J. R. (2020). The role of microfossils in central Greenland ice cores to reveal past ecosystem changes. Virtual American Quaternary Association (AMQUA) 2020 – 50th Anniversary Biennial Meeting

Brügger, S., Chellman, N. J., Arienzo, M. M., McConnell, J. R. (2020). The contribution of microfossils to reconstruct past ecosystems from Central Greenland ice cores. Annual Meeting of the Ecological Society of America (ESA)

Chellman, N. J., Czank, A. Z., Sexauer Gustin, M., Arienzo, M. M., Vargas Estrada, M., McConnell, J. R. (2020). Comparison of co-located ice-core and tree-ring records of atmospheric mercury variability since 1800 CE from the Wind River Range, Wyoming, Eos Trans. AGU, Fall Meet. Suppl, Abstract B014-07

McConnell, J. R., Chellman, N. J., Stohl, A., Wilson, A. (2020). Aerosols & ancient history in Arctic ice. Swissnex Virtual 2020

2019
Arienzo, M. M., Maezumi, Y., Chellman, N. J., Iriarte, J. (2019). Evidence of anthropogenic modification of the landscape through biomass burning from an Amazon lake sediment core. INQUA: Dublin, Ireland

Osman, M., Coats, S., McConnell, J. R., Chellman, N. J., Das, S. (2019). Enhanced North Atlantic jet-stream variability coeval with Arctic warming during the last millennium, Eos, Trans. AGU, Fall Meet. Suppl., Abstract No. PP42B-06

Chellman, N. J., McConnell, J. R., Wilson, A. J., Stohl, A., Arienzo, M. M., Eckhardt, S., Kipfstuhl, S., Opel, T., Thompson, E., Pollard, M., Place, P., Steffensen, J. P. (2019). Widespread Arctic lead pollution since 1000 BCE documents ancient and medieval European lead-silver smelting, major historical events, and northern-hemisphere industrialization, Eos, Trans. AGU, Fall Meet. Suppl., Abstract No. A51H-2774

2018
Arienzo, M. M., Preunkert, S., McConnell, J. R., Chellman, N. J., Legrand, M., Stohl, A., Eckhardt, S. (2018). Assessment of pollution from two ice cores from Col du Dome, French Alps. POLAR 2018: Davos, Switzerland

Arienzo, M. M., McConnell, J. R., Chellman, N. J., Gleason, K. E., Stohl, A., Eckhardt, S. (2018). Black carbon deposition to Antarctica: Low latitude hydroclimate teleconnections. POLAR 2018: Davos, Switzerland

2017
Chellman, N. J., McConnell, J. R., Arienzo, M. M., Pederson, G., Aarons, S., Csank, A. Z. (2017). An updated chronology for the Uper Fremont Glacier ice cores: Climate and environmental implications. GSA Annual Meeting: Seattle, WA

Gleason, K. E., Arienzo, M. M., Chellman, N. J., McConnell, J. R. (2017). Forest Fires Darken Snow for Years following Disturbance: Magnitude, Duration, and Composition of Light Absorbing Impurities in Seasonal Snow across a Chronosequence of Burned Forests in the Colorado River Headwaters. AGU Fall Meeting: New Orleans, LA

Das, S. B., Osman, M. B., Trusel, L. D., McConnell, J. R., Smith, B. E., Evans, M. J., Frey, K. E., Arienzo, M. M., Chellman, N. J. (2017). Towards multi-decadal to multi-millennial ice core records from coastal west Greenland ice caps. 2017 EGU General Assembly: Vienna, Austria, April 23, 2017-April 28, 2017, Session No. EGU2017-11372.

McConnell, J. R., Chellman, N. J., Arienzo, M. M., Osman, M. (2017). Black carbon and large-scale biomass burning in the Arctic during the past two millennia. 2017 Fourth Santa Fe Conference on Global & Regional Climate Change: Santa Fe, NM, February 7, 2017, Paper No. T19

McConnell, J. R., Arienzo, M. M., Murphy, L. N., Chellman, N. J., Das, S., Kipfstuhl, S. (2017). Black carbon, wildfire, and climate linkages in the Southern Hemisphere During the Holocene. Fourth Santa Fe Conference on Global & Regional Climate Change: Santa Fe, NM, February 8, 2017

Mekhaldi, F., McConnell, J. R., Adolphi, F., Arienzo, M. M., Chellman, N. J., Maselli, O. J., Sigl, M., Muscheler, R. (2017). No nitrate spikes detectable in several polar ice cores following the largest known solar events. 2017 EGU General Assembly: Vienna, Austria, April 23, 2017-April 28, 2017, Session No. EGU2017-14979.

Plunkett, G., Pilcher, J. R., McConnell, J. R., Sigl, M., Chellman, N. J. (2017). The significance of volcanic ash in Greenland ice cores during the Common Era. American Geophysical Union 2017 Fall Conference: New Orleans, LA, December 11, 2017, Abstract No. V036-287069.

Shackleton, S. A., Severinghaus, J. P., Baggenstos, D., Bereiter, B., Brook, E., Menking, J. A., Petrenko, V. V., Dyonisius, M., McConnell, J. R., Rhodes, R., Bauska, T. K., Arienzo, M. M., Chellman, N. J. (2017). Timing and magnitude of Last Interglacial ocean warming. 2017 AGU Fall Meeting: New Orleans, LA, December 15, 2017, Paper No. PP53C-05.

2016
Arienzo, M. M., McConnell, J. R., Murphy, L., Chriscitiello, A., Das, S., Chellman, N. J. (2016). Antarctic black carbon parallels insolation and millennial scale climate variation. American Geophysical Union, Annual Meeting: San Francisco, CA

Arienzo, M. M., McConnell, J. R., Chellman, N. J., Criscitiello, A., Curran, M., Kipfstuhl, S., Nolan, M., Sigl, M., Steffensen, J. P. (2016). Arctic and Antarctic ice core records of Nuclear Weapons Testing. 2nd Open Science Conference, International Partnerships in Ice Core Sciences (IPICS): Hobart, Tasmania, March 7, 2016-March 11, 2016

Chellman, N. J., McConnell, J. R., Heyvaert, A. C., Brigham-Grette, J., Melles, M., Wennrich, V., Svensson, A. (2016). 150 kyr History of Arctic Black Carbon Deposition Recorded by Paired Ice Core and Sediment Core Records from Lake El’gygytgyn and NEEM. Eos, Transactions American Geophysical Union, Fall Meeting Supplement: San Francisco, CA, December 12, 2016-December 16, 2016, Abstract C12A-06

Chellman, N. J., McConnell, J. R., Arienzo, M. M., Heyvaert, A. C., Vannière, B. (2016). Using paired ice core and sediment core records to evaluate Holocene black carbon flux and fire history across the Northern Hemisphere. 2nd Open Science Conference, International Partnerships in Ice Core Sciences (IPICS): Hobart, Tasmania, March 7, 2016-March 11, 2016

McConnell, J. R., Sigl, M., Chellman, N. J., Arienzo, M. M., Ludlow, F., Curran, M., Plunkett, G., Büntgen, U., Toohey, M., Burke, A., Smith-Johnson, V., Albert, P. (2016). Recent and future directions in ice-core records of volcanism. Volcanic Impacts on Climate and Society (VICS) Conference: Palisades, NY, June 6, 2016-June 8, 2016

Sigl, M., McConnell, J. R., Chellman, N. J., Ludlow, F., Curran, M., Plunkett, G., Büntgen, C., Toohey, M., Burke, A., Grieman, M. (2016). The ice-core record of volcanism: Status and future directions (solicited). European Geosciences Union General Assembly: Vienna, Austria, April 17, 2016-April 22, 2016

2015
Chellman, N. J., McConnell, J. R., Arienzo, M. M., Heyvaert, A. C., Vannière, B. (2015). Evaluating and interpreting a new method for measuring BC in lake sediment cores using paired ice core and sediment core records from the Northern Hemisphere. International Conference on Carbonaceous Particles in the Atmosphere (ICCPA): Berkeley, CA, August 10, 2015-August 13, 2015

McConnell, J. R., Arienzo, M. M., Chellman, N. J., Yau, A. M. (2015). A 1300 year record of total organic carbon, black carbon, and other burning tracers from a northeast Greenland ice core. International Conference on Carbonaceous Particles in the Atmosphere (ICCPA): Berkeley, CA, August 10, 2015-August 13, 2015

McConnell, J. R., Arienzo, M. M., Chellman, N. J., Curran, M., Fritzsche, D., Kipfstuhl, S., Mulvaney, R., Sigl, M., Steffensen, J. P., Wilson, A., Yau, A. M. (2015). Dust at the Poles during the Past Three Millennium: Linkages to Climate and Land Use. Eos Trans. American Geophysical Union (AGU) Fall Meeting Suppl.: San Francisco, CA, December 14, 2015-December 18, 2015, Abstract A21L-03

2014
Buffen, A. M., Hastings, M. G., McConnell, J. R., Chellman, N. J. (2014). The isotopic composition of nitrate in West Antarctica at present and since the last Glacial stage. AGU Fall Meeting: San Francisco, December 15, 2014-December 19, 2014, Abstract C31C-0310

McConnell, J. R., Arienzo, M. M., Chellman, N. J., Fritzsche, D., Kreutz, K. J., Kipfstuhl, S., Maselli, O. J., Nolan, M., Pasteris, D. R., Sigl, M., Steffensen, J. P. (2014). Dust in the Arctic during the past millennium from a developing array of ice cores: Linkages to climate and land use. AGU Fall Meeting: San Francisco, December 15, 2014-December 19, 2014, Abstract A44C-05

McConnell, J. R., Sigl, M., Curran, M., Kipfstuhl, S., Mulvaney, R., Arienzo, M. M., Chellman, N. J., Maselli, O. J., Pasteris, D. R. (2014). Black Carbon at WAIS Divide. WAIS Divide Science Meeting: La Jolla, September 22, 2014-September 24, 2014

McConnell, J. R., Dunbar, N. W., Köhler, P., Thomas, J. L., Chellman, N. J., Layman, L. R., Maselli, O. J., Pasteris, D. R., Sigl, M., Adkins, J. J., Baggenstos, D., Brook, E. J., Buizert, C., Burke, A., Cole-Dai, J., Fleet, L. G., Fudge, T. J., Knorr, G., Grieman, M., Marcott, S. A., McGwire, K. C., Mulvaney, R., Paris, G., Rhodes, R., Saltzman, E. S., Severinghaus, J. P., Steffensen, J. P., Taylor, K. C., Winckler, G. (2014). Accelerated deglaciation linked to volcanic eruptions 17.8k years ago. WAIS Divide Science Meeting: La Jolla, September 22, 2014-September 24, 2014

Pasteris, D. R., McConnell, J. R., Das, S. B., Albert, M. R., Criscitiello, A., Maselli, O. J., Sigl, M., Chellman, N. J. (2014). Biomass burning and sea ice proxies from Antarctic ice core chemistry records. WAIS Divide Science Meeting: La Jolla, September 22, 2014-September 24, 2014

2013
Sigl, M., McConnell, J. R., Maselli, O. J., Pasteris, D. R., Chellman, N. J., Layman, L. R., Rhodes, R., Cole-Dai, J., Isaksson, E., Severi, M., Kipfstuhl, S., Kawamura, K., Motizuki, Y., Toohey, M., Fudge, T. (2013). The WAIS Divide Sulfur Record: 68ka of Explosive Volcanism. WAIS Divide Annual Meeting: La Jolla, September 24, 2013-September 25, 2013

Hastings, M., Fibiger, D., Chellman, N. J., McConnell, J. R. (2013). The Biogeochemical Ice Core Record: A New Perspective on Nitrate. Goldschmidt: Florence

McConnell, J. R., Brook, J., Chellman, N. J., Grinstead, R., Layman, L. R., Maselli, O. J., McCarthy, M. P., Pasteris, D. R., Rhodes, R., Sigl, M. (2013). Continuous Glaciochemical and Other Measurements in the WAIS Divide Ice Core: ~27K to ~66K ybp. WAIS Divide Science Meeting: La Jolla

Pasteris, D. R., McConnell, J. R., Das, S., Criscitiello, A., Evans, M., Maselli, O. J., Sigl, M., Layman, L. R., Chellman, N. J. (2013). Sea Ice Proxies from Ice Core Sodium and Chloride Records in West Antarctica. WAIS Divide Science Meeting: La Jolla

2012
Chellman, N. J., Hastings, M. G., McConnell, J. R. (2012). Tracing anthropogenic impacts on nitrate deposition at Summit, Greenland from 1760 to 2002. Eos Trans. AGU, Fall Meet. Suppl., Abstract B51F-0626

Other
2022
McConnell, J. R., Chellman, N. J., Stohl, A. (2022). Reply to: Black carbon attribution, Nature, 10.1038/s41586-022-05519-x