Now showing items 1-7 of 7
Variable Hf-Sr-Nd Radiogenic Isotopic Compositions in a Saharan Dust Storm over the Atlantic: Implications for Dust Flux to Oceans, Ice Sheets and the Terrestrial Biosphere
(2013-01-16)
Isotopic characterization of aerosol mineral particles (atmospheric dust) of varying sizes is essential in classifying source areas, and for determining the source of dust deposited over oceans and icesheets. However, the ...
Isotopically Depleted Carbon in the Mid-Depth South Atlantic During the Last Deglaciation
(Wiley American Geophysical Union, 2013-06-14)
The initial rise in atmospheric CO2 during the last deglaciation was likely driven by input of carbon from a 13C-depleted reservoir (Schmitt et al., 2012). Here we show that high resolution benthic foraminiferal records ...
No Evidence for a Deglacial Intermediate Water Δ14C Anomaly in the Southwest Atlantic
(2012-05-29)
The last deglaciation was characterized by an increase in atmospheric pCO2 and decrease in atmospheric radiocarbon activity. One hypothesis is that these changes were due to out-gassing of 14C-depleted carbon from the ...
A New Paleothermometer for Forest Paleosols and its Implications for Cenozoic Climate
(Geology, 2013-05-17)
Climate is a primary control on the chemical composition of paleosols, making them a potentially extensive archive applicable to problems ranging from paleoclimate reconstruction to paleoaltimetry. However, the development ...
Representational Bias in Phytoliths from Modern Soils of Central North America: Implications for Paleovegetation Reconstructions
(2012-05-29)
Understanding localized patterns and community compositions of vegetation in an environment is critical to the reconstruction of climatic and ecological conditions across all spatiotemporal scales. One of the most accurate ...
Dehumidification over Tropical Continents Reduces Climate Sensitivity and Inhibits Snowball Earth Initiation
(2013-01-16)
The enigmatic Neoproterozoic geological record suggests the potential for a fully glaciated “Snowball Earth.” Low-latitude continental position has been invoked as a potential Snowball Earth trigger by raising surface ...
Growing Plant-Rich Dining by Design: Co-Designing Behavior Change Strategies to Encourage Sustainable Food Choices
(2022-07-21)
Widespread adoption of plant-rich diets is a key climate change mitigation strategy. Restaurants are one of many environments where diets must shift toward more sustainable directions. Researchers have studied behavior ...