Florence Bascom Geoscience Center

Publications

Filter Total Items: 570
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Year Published: 2019

Mid-latitude net precipitation decreased with Arctic warming during the Holocene

The latitudinal temperature gradient between the Equator and the poles influences atmospheric stability, the strength of the jet stream and extratropical cyclones. Recent global warming is weakening the annual surface gradient in the Northern Hemisphere by preferentially warming the high latitudes; however, the implications of these changes for...

Cody Routson; Nicholas McKay; Kaufman, Darrell; Hugues Goosse; Bryan Shuman; Rodysill, Jessica; Toby Ault

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Year Published: 2019

Mid-latitude net precipitation decreased with Arctic warming during the Holocene

The latitudinal temperature gradient between the Equator and the poles influences atmospheric stability, the strength of the jet stream and extratropical cyclones. Recent global warming is weakening the annual surface gradient in the Northern Hemisphere by preferentially warming the high latitudes; however, the implications of these changes for...

Cody Routson; Nicholas McKay; Kaufman, Darrell; Hugues Goosse; Bryan Shuman; Rodysill, Jessica; Toby Ault

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Year Published: 2019

100-kyr paced climate change in the Pliocene warm period, Southwest Pacific

The mid to late Pliocene (~4.2-2.8 Ma.) represents an experiment in climate sensitivity to orbital pacing in which nearly all continental ice was confined to the Southern Hemisphere. Most studies have emphasized the dominant role of obliquity in determining changes in ice volume and temperature at this time, although most records come from the...

Caballero-Gill, Rocio; Herbert, Timothy D.; Dowsett, Harry

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Year Published: 2019

100-kyr paced climate change in the Pliocene warm period, Southwest Pacific

The mid to late Pliocene (~4.2-2.8 Ma.) represents an experiment in climate sensitivity to orbital pacing in which nearly all continental ice was confined to the Southern Hemisphere. Most studies have emphasized the dominant role of obliquity in determining changes in ice volume and temperature at this time, although most records come from the...

Caballero-Gill, Rocio; Herbert, Timothy D.; Dowsett, Harry

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Year Published: 2019

North American Commission on Stratigraphic Nomenclature Note 69 – Application for addition of subseries/subepoch to the North American Stratigraphic Code

Consistency in stratigraphic nomenclature enables communication among scientists both regionally and globally, thus requiring the North American Stratigraphic Code, as presented by the North American Commission on Stratigraphic Nomenclature, to follow international convention. The ratification of three subseries of the Holocene by the...

Aubry, Marie-Pierre; Fluegeman, Richard H.; Edwards, Lucy E.; Pratt, Brian R.; Brett, Carlton E.

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Year Published: 2019

North American Commission on Stratigraphic Nomenclature Note 69 – Application for addition of subseries/subepoch to the North American Stratigraphic Code

Consistency in stratigraphic nomenclature enables communication among scientists both regionally and globally, thus requiring the North American Stratigraphic Code, as presented by the North American Commission on Stratigraphic Nomenclature, to follow international convention. The ratification of three subseries of the Holocene by the...

Aubry, Marie-Pierre; Fluegeman, Richard H.; Edwards, Lucy E.; Pratt, Brian R.; Brett, Carlton E.

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Year Published: 2019

Widespread global peatland establishment and persistence over the last 130,000 y

Glacial−interglacial variations in CO2 and methane in polar ice cores have been attributed, in part, to changes in global wetland extent, but the wetland distribution before the Last Glacial Maximum (LGM, 21 ka to 18 ka) remains virtually unknown. We present a study of global peatland extent and carbon (C) stocks through the last glacial...

Treat, Claire C.; Kleinen, Thomas ; Broothaerts , Nils ; Dalton , April S. ; Dommain, Rene; Douglas, Thomas A.; Drexler, Judith Z.; Finkelstein, Sarah A; Grosse, Guido; Hope , Geoffrey ; Hutchings , Jack ; Jones, Miriam C.; Kuhry, Peter; Lacourse, Terri; Lähteenoja, Outi ; Loisel, Julie; Notebaert , Bastiaan; Payne, Richard; Peteet, Dorothy M.; Sannel , A. Britta K. ; Stelling , Jonathan M. ; Strauss , Jens; Swindles, Graeme T.; Talbot, Julie ; Tarnocai, Charles; Verstraeten, Gert ; Williams , Christopher J. ; Xia , Zhengyu ; Yu, Zicheng; Väliranta, Minna ; Hättestrand, Martina ; Alexanderson, Helena ; Brovkin , Victor

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Year Published: 2019

Widespread global peatland establishment and persistence over the last 130,000 y

Glacial−interglacial variations in CO2 and methane in polar ice cores have been attributed, in part, to changes in global wetland extent, but the wetland distribution before the Last Glacial Maximum (LGM, 21 ka to 18 ka) remains virtually unknown. We present a study of global peatland extent and carbon (C) stocks through the last glacial...

Treat, Claire C.; Kleinen, Thomas ; Broothaerts , Nils ; Dalton , April S. ; Dommain, Rene; Douglas, Thomas A.; Drexler, Judith Z.; Finkelstein, Sarah A; Grosse, Guido; Hope , Geoffrey ; Hutchings , Jack ; Jones, Miriam C.; Kuhry, Peter; Lacourse, Terri; Lähteenoja, Outi ; Loisel, Julie; Notebaert , Bastiaan; Payne, Richard; Peteet, Dorothy M.; Sannel , A. Britta K. ; Stelling , Jonathan M. ; Strauss , Jens; Swindles, Graeme T.; Talbot, Julie ; Tarnocai, Charles; Verstraeten, Gert ; Williams , Christopher J. ; Xia , Zhengyu ; Yu, Zicheng; Väliranta, Minna ; Hättestrand, Martina ; Alexanderson, Helena ; Brovkin , Victor

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Year Published: 2019

An assessment of plant species differences on cellulose oxygen isotopes from two Kenai Peninsula, Alaska peatlands: Implications for hydroclimatic reconstructions

Peat cores are valuable archives of past environmental change because they accumulate plant organic matter over millennia. While studies have primarily focused on physical, ecological, and some biogeochemical proxies, cores from peatlands have increasingly been used to interpret hydroclimatic change using stable isotope analyses of cellulose...

Jones, Miriam; Anderson, Lesleigh; Keller, Katherine; Nash, Bailey; Littell, Virginia; Wooller, Matthew J.; Jolley, Chelsea

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Year Published: 2019

An assessment of plant species differences on cellulose oxygen isotopes from two Kenai Peninsula, Alaska peatlands: Implications for hydroclimatic reconstructions

Peat cores are valuable archives of past environmental change because they accumulate plant organic matter over millennia. While studies have primarily focused on physical, ecological, and some biogeochemical proxies, cores from peatlands have increasingly been used to interpret hydroclimatic change using stable isotope analyses of cellulose...

Jones, Miriam; Anderson, Lesleigh; Keller, Katherine; Nash, Bailey; Littell, Virginia; Wooller, Matthew J.; Jolley, Chelsea

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Year Published: 2019

Lithologies, ages, and provenance of clasts in the Ordovician Fincastle Conglomerate, Botetourt County, Virginia, USA

The Fincastle Conglomerate is an Ordovician polymictic, poorly sorted, matrix- and clast-supported cobble to boulder-rich conglomerate located just north of Fincastle, Botetourt County, VA. At least nine other cobble and boulder conglomerates are located in a similar stratigraphic position from Virginia to Georgia west of the Blue Ridge structural...

Belkin, Harvey E.; Repetski, John E.; Dulong, Frank T.; Hickling, Nelson L.

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Year Published: 2019

Lithologies, ages, and provenance of clasts in the Ordovician Fincastle Conglomerate, Botetourt County, Virginia, USA

The Fincastle Conglomerate is an Ordovician polymictic, poorly sorted, matrix- and clast-supported cobble to boulder-rich conglomerate located just north of Fincastle, Botetourt County, VA. At least nine other cobble and boulder conglomerates are located in a similar stratigraphic position from Virginia to Georgia west of the Blue Ridge structural...

Belkin, Harvey E.; Repetski, John E.; Dulong, Frank T.; Hickling, Nelson L.