Search Results - "Chellman, Nathan"

Lead pollution recorded in Greenland ice indicates European emissions tracked plagues, wars, and imperial expansion during antiquity by McConnell, Joseph R., Wilson, Andrew I., Stohl, Andreas, Arienzo, Monica M., Chellman, Nathan J., Eckhardt, Sabine, Thompson, Elisabeth M., Pollard, A. Mark, Steffensen, Jørgen Peder

“…Lead pollution in Arctic ice reflects midlatitude emissions from ancient lead–silver mining and smelting. The few reported measurements have been extrapolated…”
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Four-fold increase in solar forcing on snow in western U.S. burned forests since 1999 by Gleason, Kelly E., McConnell, Joseph R., Arienzo, Monica M., Chellman, Nathan, Calvin, Wendy M.

“…Forest fires are increasing across the American West due to climate warming and fire suppression. Accelerated snow melt occurs in burned forests due to…”
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Precise interpolar phasing of abrupt climate change during the last ice age by Buizert, Christo, Adrian, Betty, Ahn, Jinho, Albert, Mary, Alley, Richard B, Baggenstos, Daniel, Bauska, Thomas K, Bay, Ryan C, Bencivengo, Brian B, Bentley, Charles R, Brook, Edward J, Chellman, Nathan J, Clow, Gary D, Cole-Dai, Jihong, Conway, Howard, Cravens, Eric, Cuffey, Kurt M, Dunbar, Nelia W, Edwards, Jon S, Fegyveresi, John M, Ferris, Dave G, Fitzpatrick, Joan J, Fudge, T J, Gibson, Chris J, Gkinis, Vasileios, Goetz, Joshua J, Gregory, Stephanie, Hargreaves, Geoffrey M, Iverson, Nels, Johnson, Jay A, Jones, Tyler R, Kalk, Michael L, Kippenhan, Matthew J, Koffman, Bess G, Kreutz, Karl, Kuhl, Tanner W, Lebar, Donald A, Lee, James E, Marcott, Shaun A, Markle, Bradley R, Maselli, Olivia J, McConnell, Joseph R, McGwire, Kenneth C, Mitchell, Logan E, Mortensen, Nicolai B, Neff, Peter D, Nishiizumi, Kunihiko, Nunn, Richard M, Orsi, Anais J, Pasteris, Daniel R, Pedro, Joel B, Pettit, Erin C, Price, P Buford, Priscu, John C, Rhodes, Rachael H, Rosen, Julia L, Schauer, Andrew J, Schoenemann, Spruce W, Sendelbach, Paul J, Severinghaus, Jeffrey P, Shturmakov, Alexander J, Sigl, Michael, Slawny, Kristina R, Souney, Joseph M, Sowers, Todd A, Spencer, Matthew K, Steig, Eric J, Taylor, Kendrick C, Twickler, Mark S, Vaughn, Bruce H, Voigt, Donald E, Waddington, Edwin D, Welten, Kees C, Wendricks, Anthony W, White, James W C, Winstrup, Mai, Wong, Gifford J, Woodruff, Thomas E

“…A new ice core from West Antarctica shows that, during the last ice age, abrupt Northern Hemisphere climate variations were followed two centuries later by a…”
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Thallium Pollution in Europe Over the Twentieth Century Recorded in Alpine Ice: Contributions From Coal Burning and Cement Production by Legrand, Michel, McConnell, Joseph R., Preunkert, Susanne, Bergametti, Gilles, Chellman, Nathan J., Desboeufs, Karine, Plach, Andreas, Stohl, Andreas, Eckhardt, Sabine

“…Emission inventories indicate that thallium, a highly toxic metal, is emitted during coal burning and cement production. These estimates have been established…”
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Reply to: Black carbon attribution by McConnell, Joseph R., Chellman, Nathan J., Stohl, Andreas

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Extreme climate after massive eruption of Alaska’s Okmok volcano in 43 BCE and effects on the late Roman Republic and Ptolemaic Kingdom by McConnell, Joseph R., Sigl, Michael, Plunkett, Gill, Burke, Andrea, Kim, Woon Mi, Raible, Christoph C., Wilson, Andrew I., Manning, Joseph G., Ludlow, Francis, Chellman, Nathan J., Innes, Helen M., Yang, Zhen, Larsen, Jessica F., Schaefer, Janet R., Kipfstuhl, Sepp, Mojtabavi, Seyedhamidreza, Wilhelms, Frank, Opel, Thomas, Meyer, Hanno, Steffensen, Jørgen Peder

“…The assassination of Julius Caesar in 44 BCE triggered a power struggle that ultimately ended the Roman Republic and, eventually, the Ptolemaic Kingdom,…”
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Lead and Antimony in Basal Ice From Col du Dome (French Alps) Dated With Radiocarbon: A Record of Pollution During Antiquity by Preunkert, Susanne, McConnell, Joseph R., Hoffmann, Helene, Legrand, Michel, Wilson, Andrew I., Eckhardt, Sabine, Stohl, Andreas, Chellman, Nathan J., Arienzo, Monica M., Friedrich, Ronny

“…Lead and antimony measurements in basal ice from the Col du Dome glacier document heavy metal pollution in western Europe associated with emissions from mining…”
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Pervasive Arctic lead pollution suggests substantial growth in medieval silver production modulated by plague, climate, and conflict by McConnell, Joseph R., Chellman, Nathan J., Wilson, Andrew I., Stohl, Andreas, Arienzo, Monica M., Eckhardt, Sabine, Fritzsche, Diedrich, Kipfstuhl, Sepp, Opel, Thomas, Place, Philip F., Steffensen, Jørgen Peder

“…Lead pollution in Arctic ice reflects large-scale historical changes in midlatitude industrial activities such as ancient lead/silver production and recent…”
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High-latitude fire activity of recent decades derived from microscopic charcoal and black carbon in Greenland ice cores by Brugger, Sandra O, Chellman, Nathan J, McConnell, Callie, McConnell, Joseph R

“…Warming temperatures and prolonged drought periods cause rapid changes of fire frequencies and intensities in high-latitude ecosystems. Associated smoke plumes…”
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Pollen in Polar Ice Implies Eastern Canadian Forest Dynamics Diverged From Climate After European Settlement by Brugger, Sandra O., Chellman, Nathan J., Plach, Andreas, Henne, Paul D., Stohl, Andreas, McConnell, Joseph R.

“…Rapid warming and human exploitation threaten boreal forests. Understanding links among vegetation, climate, and people in this vast biome requires highly…”
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Alpine ice evidence of a three-fold increase in atmospheric iodine deposition since 1950 in Europe due to increasing oceanic emissions by Legrand, Michel, McConnell, Joseph R., Preunkert, Susanne, Arienzo, Monica, Chellman, Nathan, Gleason, Kelly, Sherwen, Tomás, Evans, Mat J., Carpenter, Lucy J.

“…Iodine is an important nutrient and a significant sink of tropospheric ozone, a climate-forcing gas and air pollutant. Ozone interacts with seawater iodide,…”
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Improved biomass burning emissions from 1750 to 2010 using ice core records and inverse modeling by Zhang, Bingqing, Chellman, Nathan J., Kaplan, Jed O., Mickley, Loretta J., Ito, Takamitsu, Wang, Xuan, Wensman, Sophia M., McCrimmon, Drake, Steffensen, Jørgen Peder, McConnell, Joseph R., Liu, Pengfei

“…Estimating fire emissions prior to the satellite era is challenging because observations are limited, leading to large uncertainties in the calculated aerosol…”
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Hemispheric black carbon increase after the 13th-century Māori arrival in New Zealand by McConnell, Joseph R., Chellman, Nathan J., Mulvaney, Robert, Eckhardt, Sabine, Stohl, Andreas, Plunkett, Gill, Kipfstuhl, Sepp, Freitag, Johannes, Isaksson, Elisabeth, Gleason, Kelly E., Brugger, Sandra O., McWethy, David B., Abram, Nerilie J., Liu, Pengfei, Aristarain, Alberto J.

“…New Zealand was among the last habitable places on earth to be colonized by humans 1 . Charcoal records indicate that wildfires were rare prior to colonization…”
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The magnitude and impact of the 431 CE Tierra Blanca Joven eruption of Ilopango, El Salvador by Smith, Victoria C., Costa, Antonio, Aguirre-Díaz, Gerardo, Pedrazzi, Dario, Scifo, Andrea, Plunkett, Gill, Poret, Mattieu, Tournigand, Pierre-Yves, Miles, Dan, Dee, Michael W., McConnell, Joseph R., Sunyé-Puchol, Ivan, Harris, Pablo Dávila, Sigl, Michael, Pilcher, Jonathan R., Chellman, Nathan, Gutiérrez, Eduardo

“…The Tierra Blanca Joven (TBJ) eruption from Ilopango volcano deposited thick ash over much of El Salvador when it was inhabited by the Maya, and rendered all…”
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Organic layers preserved in ice patches: A new record of Holocene environmental change on the Beartooth Plateau, USA by Alt, Mio, Puseman, Kathryn, Lee, Craig M, Pederson, Gregory T, McConnell, Joseph R, Chellman, Nathan J, McWethy, David B

“…Growing season temperatures play a crucial role in controlling treeline elevation at regional to global scales. However, understanding of treeline dynamics in…”
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Alpine-ice record of bismuth pollution implies a major role of military use during World War II by Legrand, Michel, McConnell, Joseph R., Bergametti, Gilles, Preunkert, Susanne, Chellman, Nathan, Desboeufs, Karine, Lestel, Laurence, Plach, Andreas, Stohl, Andreas

“…Military conflicts result in local environmental damage, but documenting regional and larger scale impacts such as heavy metal pollution has proven elusive…”
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Hemispheric-scale heavy metal pollution from South American and Australian mining and metallurgy during the Common Era by McConnell, Joseph R., Chellman, Nathan J., Wensman, Sophia M., Plach, Andreas, Stanish, Charles, Santibáñez, Pamela A., Brugger, Sandra O., Eckhardt, Sabine, Freitag, Johannes, Kipfstuhl, Sepp, Stohl, Andreas

“…Records from polar and alpine ice reflect past changes in background and industrial toxic heavy metal emissions. While Northern Hemisphere records have been…”
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Anthropogenic Influence on Tropospheric Reactive Bromine Since the Pre‐industrial: Implications for Arctic Ice‐Core Bromine Trends by Zhai, Shuting, McConnell, Joseph R., Chellman, Nathan, Legrand, Michel, Opel, Thomas, Meyer, Hanno, Jaeglé, Lyatt, Confer, Kaitlyn, Fujita, Koji, Wang, Xuan, Alexander, Becky

“…Tropospheric reactive bromine (Bry) influences the oxidation capacity of the atmosphere by acting as a sink for ozone and nitrogen oxides. Aerosol acidity…”
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Revised historical Northern Hemisphere black carbon emissions based on inverse modeling of ice core records by Eckhardt, Sabine, Pisso, Ignacio, Evangeliou, Nikolaos, Zwaaftink, Christine Groot, Plach, Andreas, McConnell, Joseph R., Sigl, Michael, Ruppel, Meri, Zdanowicz, Christian, Lim, Saehee, Chellman, Nathan, Opel, Thomas, Meyer, Hanno, Steffensen, Jørgen Peder, Schwikowski, Margit, Stohl, Andreas

“…Black carbon emitted by incomplete combustion of fossil fuels and biomass has a net warming effect in the atmosphere and reduces the albedo when deposited on…”
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Abrupt Common Era hydroclimate shifts drive west Greenland ice cap change by Osman, Matthew B., Smith, Benjamin E., Trusel, Luke D., Das, Sarah B., McConnell, Joseph R., Chellman, Nathan, Arienzo, Monica, Sodemann, Harald

“…Ice core archives are well suited for reconstructing rapid past climate changes at high latitudes. Despite this, few records currently exist from coastal…”
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