Search Results - "Raberg, Jonathan H"

Delayed postglacial colonization of Betula in Iceland and the circum North Atlantic by Harning, David J, Sacco, Samuel, Anamthawat-Jónsson, Kesara, Ardenghi, Nicolò, Thordarson, Thor, Raberg, Jonathan H, Sepúlveda, Julio, Geirsdóttir, Áslaug, Shapiro, Beth, Miller, Gifford H

“…As the Arctic continues to warm, woody shrubs are expected to expand northward. This process, known as ‘shrubification,’ has important implications for…”
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Revised fractional abundances and warm-season temperatures substantially improve brGDGT calibrations in lake sediments by Raberg, Jonathan H, Harning, David J, Crump, Sarah E, de Wet, Greg, Blumm, Aria, Kopf, Sebastian, Geirsdóttir, Áslaug, Miller, Gifford H, Sepúlveda, Julio

“…Distributions of branched glycerol dialkyl glycerol tetraethers (brGDGTs) are frequently employed for reconstructing terrestrial paleotemperatures from lake…”
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Production of diverse brGDGTs by Acidobacterium Solibacter usitatus in response to temperature, pH, and O2 provides a culturing perspective on brGDGT proxies and biosynthesis by Halamka, Toby A., Raberg, Jonathan H., McFarlin, Jamie M., Younkin, Adam D., Mulligan, Christopher, Liu, Xiao‐Lei, Kopf, Sebastian H.

“…Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are bacterial membrane lipids that are frequently employed as paleoenvironmental proxies because of…”
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Near-universal trends in brGDGT lipid distributions in nature by Raberg, Jonathan H, Miller, Gifford H, Geirsdóttir, Áslaug, Sepúlveda, Julio

“…Bacterial brGDGT lipids are a prevalent tool in studies of terrestrial paleoclimate. Their distributions correlate empirically with environmental temperature…”
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Ancient plant DNA reveals High Arctic greening during the Last Interglacial by Crump, Sarah E., Fréchette, Bianca, Power, Matthew, Cutler, Sam, de Wet, Gregory, Raynolds, Martha K., Raberg, Jonathan H., Briner, Jason P., Thomas, Elizabeth K., Sepúlveda, Julio, Shapiro, Beth, Bunce, Michael, Miller, Gifford H.

“…Summer warming is driving a greening trend across the Arctic, with the potential for large-scale amplification of climate change due to vegetation-related…”
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Probing Electric Double-Layer Composition via in Situ Vibrational Spectroscopy and Molecular Simulations by Raberg, Jonathan H, Vatamanu, Jenel, Harris, Stephen J, van Oversteeg, Christina H. M, Ramos, Axel, Borodin, Oleg, Cuk, Tanja

“…At an electrode, ions and solvent accumulate to screen charge, leading to a nanometer-scale electric double layer (EDL). The EDL guides electrode passivation…”
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Spatiotemporal variation of modern lake, stream, and soil water isotopes in Iceland by Harning, David J, Raberg, Jonathan H, McFarlin, Jamie M, Axford, Yarrow, Florian, Christopher R, Ãlafsdóttir, Kristín B, Kopf, Sebastian, Sepúlveda, Julio, Miller, Gifford H, Geirsdóttir, Áslaug

“…As global warming progresses, changes in high-latitude precipitation are expected to impart long-lasting impacts on Earth systems, including glacier mass…”
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Southern Baffin Island mean annual precipitation isotopes modulated by summer and autumn moisture source changes during the past 5800 years by Gorbey, Devon B., Thomas, Elizabeth K., Crump, Sarah E., Hollister, Kayla V., Raynolds, Martha K., Raberg, Jonathan H.,  Wet, Gregory, Sepúlveda, Julio, Miller, Gifford H.

“…ABSTRACT Paleo water isotope records can elucidate how the Arctic water cycle responded to past climate changes. We analyze the hydrogen isotope composition…”
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Depth‐ and Time‐Resolved Distributions of Snowmelt‐Driven Hillslope Subsurface Flow and Transport and Their Contributions to Surface Waters by Tokunaga, Tetsu K., Wan, Jiamin, Williams, Kenneth H., Brown, Wendy, Henderson, Amanda, Kim, Yongman, Tran, Anh Phuong, Conrad, Mark E., Bill, Markus, Carroll, Rosemary W.H., Dong, Wenming, Xu, Zexuan, Lavy, Adi, Gilbert, Ben, Romero, Sergio, Christensen, John N., Faybishenko, Boris, Arora, Bhavna, Siirila‐Woodburn, Erica R., Versteeg, Roelof, Raberg, Jonathan H., Peterson, John E., Hubbard, Susan S.

“…Major components of hydrologic and elemental cycles reside underground, where their complex dynamics and linkages to surface waters are obscure. We delineated…”
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A Holocene history of climate, fire, landscape evolution, and human activity in northeastern Iceland by Ardenghi, NicolÃ, Harning, David J, Raberg, Jonathan H, Holman, Brooke R, Thordarson, Thorvaldur, Geirsdóttir, Áslaug, Miller, Gifford H, Sepúlveda, Julio

“…Paleoclimate reconstructions across Iceland provide a template for past changes in climate across the northern North Atlantic, a crucial region due to its…”
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Moss kill dates and modeled summer temperature track episodic snowline lowering and ice cap expansion in Arctic Canada through the Common Era by Miller, Gifford H, Pendleton, Simon L, Jahn, Alexandra, Zhong, Yafang, Andrews, John T, Lehman, Scott J, Briner, Jason P, Raberg, Jonathan H, Bueltmann, Helga, Raynolds, Martha, Geirsdóttir, Áslaug, Southon, John R

“…Most extant ice caps mantling low-relief Arctic Canada landscapes remained cold based throughout the late Holocene, preserving in situ bryophytes killed as ice…”
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Intact Polar brGDGTs in Arctic Lake Catchments: Implications for Lipid Sources and Paleoclimate Applications by Raberg, Jonathan H., Flores, Edgart, Crump, Sarah E., Wet, Greg, Dildar, Nadia, Miller, Gifford H., Geirsdóttir, Áslaug, Sepúlveda, Julio

“…Paleotemperature histories derived from lake sediment archives provide valuable context for modern and future climate changes. Branched glycerol dialkyl…”
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Aquatic and Terrestrial Plant Contributions to Sedimentary Plant Waxes in a Modern Arctic Lake Setting by Hollister, Kayla V., Thomas, Elizabeth K., Raynolds, Martha K., Bültmann, Helga, Raberg, Jonathan H., Miller, Gifford H., Sepúlveda, Julio

“…Sedimentary plant wax δ2H values are common proxies for hydrology, a poorly constrained variable in the Arctic. However, it can be difficult to distinguish…”
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Modeling the Impact of Riparian Hollows on River Corridor Nitrogen Exports by Rogers, D. Brian, Newcomer, Michelle E., Raberg, Jonathan H., Dwivedi, Dipankar, Steefel, Carl, Bouskill, Nicholas, Nico, Peter, Faybishenko, Boris, Fox, Patricia, Conrad, Mark, Bill, Markus, Brodie, Eoin, Arora, Bhavna, Dafflon, Baptiste, Williams, Kenneth H., Hubbard, Susan S.

“…Recent studies in snowmelt-dominated catchments have documented changes in nitrogen (N) retention over time, such as declines in watershed exports of N, though…”
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Control of Short‐Stature Vegetation Type on Shallow Ground Temperatures in Permafrost Across the Eastern Canadian Arctic by Evans, Sarah G., Raberg, Jonathan H., Crump, Sarah E., Raynolds, Martha K., Sugg, Margaret M., Brodie, Alexander R., Miller, Gifford H.

“…The Arctic has warmed three times the rate of the global average, resulting in extensive thaw of perennially frozen ground known as permafrost. While it is…”
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BrGDGT lipids in cold regions reflect summer soil temperature and seasonal soil water chemistry by Raberg, Jonathan H., Crump, Sarah E., de Wet, Greg, Harning, David J., Miller, Gifford H., Geirsdóttir, Áslaug, Sepúlveda, Julio

“…The distribution of brGDGT lipids produced by soil bacteria has been used to reconstruct temperatures in marine and terrestrial settings as far back as the…”
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Delayed postglacial colonization of Betula in Iceland and the circum North Atlantic by Harning, David J, Sacco, Samuel, Anamthawat-Jónsson, Kesara, Ardenghi, Nicolò, Thordarson, Thor, Raberg, Jonathan H, Sepúlveda, Julio, Geirsdóttir, Áslaug, Shapiro, Beth, Miller, Gifford H

“…As the Arctic continues to warm, woody shrubs are expected to expand northward. This process, known as ‘shrubification,’ has important implications for…”
Get full text

Production of diverse brGDGTs by Acidobacterium Solibacter usitatus in response to temperature, pH, and O 2 provides a culturing perspective on br GDGT proxies and biosynthesis by Halamka, Toby A., Raberg, Jonathan H., McFarlin, Jamie M., Younkin, Adam D., Mulligan, Christopher, Liu, Xiao‐Lei, Kopf, Sebastian H.

“…Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are bacterial membrane lipids that are frequently employed as paleoenvironmental proxies because of…”
Get full text

Production of diverse brGDGTs by Acidobacterium Solibacter usitatus in response to temperature, pH, and O 2 provides a culturing perspective on brGDGT proxies and biosynthesis by Halamka, Toby A, Raberg, Jonathan H, McFarlin, Jamie M, Younkin, Adam D, Mulligan, Christopher, Liu, Xiao-Lei, Kopf, Sebastian H

“…Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are bacterial membrane lipids that are frequently employed as paleoenvironmental proxies because of…”
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Modern Eastern Canadian Arctic Lake Water Isotopes Exhibit Latitudinal Patterns in Inflow Seasonality and Minimal Evaporative Enrichment by Gorbey, D. B., Thomas, E. K., Sauer, P. E., Raynolds, M. K., Miller, G. H., Corcoran, M. C., Cowling, O. C., Crump, S. E., Lovell, K., Raberg, J. H.

“…Lacustrine δ2H and δ18O isotope proxies are powerful tools for reconstructing past climate and precipitation changes in the Arctic. However, robust…”
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