Výsledky vyhledávání - "Jack A. Hutchings"

Akademický článek

Recent Warming Fuels Increased Organic Carbon Export From Arctic Permafrost

Autor: Xiaowen Zhang, Thomas S. Bianchi, Andrea J. M. Hanna, Michael R. Shields, Gareth Izon, Jack A. Hutchings, Chien‐Lu Ping, Mikhail Kanevskiy, Negar Haghipour, Timothy I. Eglinton

Publikováno v: AGU Advances, Vol 2, Iss 2, Pp n/a-n/a (2021)

Abstract Climate‐driven thawing of Arctic permafrost renders its vast carbon reserves susceptible to microbial degradation, serving as a potentially potent positive feedback hidden within the climate system. While seemingly intuitive, the relations

Externí odkaz: https://doaj.org/article/d05c37fb3f1543f7adfff3ba22b5f516

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Optimization of a Picarro L2140-i cavity ring-down spectrometer for routine measurement of triple oxygen isotope ratios in meteoric waters

Autor: Jack A. Hutchings, Bronwen L. Konecky

The demanding precision of triple oxygen isotope (Δ17O) analyses in water has restricted their measurement to dual-inlet mass spectrometry until the recent development of commercially available infrared laser analyzers. Laser-based measurements of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d38536e7f2afcbf773d0d318dcd19e06
https://amt.copernicus.org/articles/16/1663/2023/

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Optimization of the Picarro L2140-i Cavity Ring Down Spectrometer for Routine Measurement of Triple Oxygen Isotope Ratios in Meteoric Waters

Autor: Jack Alexander Hutchings, Bronwen Louise Konecky

The demanding precision of triple oxygen isotope (Δ17O) measurements in water has restricted their measurement to dual-inlet mass spectrometry until the recent development of commercially available infrared-laser analyzers. Laser-based measurements

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1303ec82f2fb111ade85b66154bd6f2e
https://doi.org/10.5194/amt-2022-230

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Direct observation of permafrost degradation and rapid soil carbon loss in tundra

Autor: E. Pegoraro, Rosvel Bracho, Elizabeth E. Webb, Kathryn G. Crummer, Gerardo Celis, Susan M. Natali, V. G. Salmon, Marguerite Mauritz, César Plaza, Edward A. G. Schuur, Jack A. Hutchings, Caitlin E. Hicks Pries, Christina Schädel

Publikováno v: Nature Geoscience. 12:627-631

Evidence suggests that 5–15% of the vast pool of soil carbon stored in northern permafrost ecosystems could be emitted as greenhouse gases by 2100 under the current path of global warming. However, direct measurements of changes in soil carbon rema

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::48d37733321b68118db050e6550583eb
https://doi.org/10.1038/s41561-019-0387-6

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Millennial-scale carbon accumulation and molecular transformation in a permafrost core from Interior Alaska

Autor: A. L. Kholodov, Darrell S. Kaufman, Derrick R. Vaughn, Edward A. G. Schuur, Thomas S. Bianchi, Jack A. Hutchings

Publikováno v: Geochimica et Cosmochimica Acta. 253:231-248

Organic carbon stored in high-latitude permafrost represents a potential positive feedback to climate warming as well as a valuable store of paleoenvironmental information. The below-freezing conditions have effectively removed permafrost organic mat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::41de16ff527586425087a968153c78bb
https://doi.org/10.1016/j.gca.2019.03.028

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Using Stable Carbon Isotopes of Seasonal Ecosystem Respiration to Determine Permafrost Carbon Loss

Autor: Jack A. Hutchings, Christina Schädel, J. Ledman, E. Pegoraro, C. Ebert, Edward A. G. Schuur, Susan M. Natali, V. G. Salmon, Gerardo Celis, Marguerite Mauritz, M. Taylor

Publikováno v: Journal of Geophysical Research: Biogeosciences. 124:46-60

Author(s): Mauritz, M; Celis, G; Ebert, C; Hutchings, J; Ledman, J; Natali, SM; Pegoraro, E; Salmon, VG; Schadel, C; Taylor, M; Schuur, EAG

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::52ef21a138625e61792d0e3395963dee
https://doi.org/10.1029/2018jg004619

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Geochemical and Stable Fe Isotopic Analysis of Dissimilatory Microbial Iron Reduction in Chocolate Pots Hot Spring, Yellowstone National Park

Autor: Nathaniel W. Fortney, Jack A. Hutchings, Eric S. Boyd, Michael R. Shields, Thomas S. Bianchi, Eric E. Roden, Clark M. Johnson, Brian L. Beard

Publikováno v: Astrobiology. 21(1)

Chocolate Pots hot spring (CP) is an Fe-rich, circumneutral-pH geothermal spring in Yellowstone National Park. Relic hydrothermal systems have been identified on Mars, and modern hydrothermal environments such as CP are useful for gaining insight int

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d37364a8ba54db8129920a1182f972c1
https://pubmed.ncbi.nlm.nih.gov/32580560

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A rapid and precise method for the analysis of underivatized amino acids in natural samples using volatile-ion-pairing reverse-phase liquid chromatography–electrospray ionization tandem mass spectrometry

Autor: Edward A. G. Schuur, Michael R. Shields, Thomas S. Bianchi, Jack A. Hutchings

Publikováno v: Organic Geochemistry. 115:46-56

Amino acids are effective tracers of organic carbon and nitrogen cycling in natural substrates. However, total analytical time can be long due to extraction, derivatization, and chromatography. Here, we present a liquid chromatographic separation of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d719280ec91aa63aae019bb34147ad1a
https://doi.org/10.1016/j.orggeochem.2017.10.007

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