Publications by authors named "Kyle Niezgoda"
The Greenland spatial fingerprint of Dansgaard-Oeschger events in observations and models.
Proc Natl Acad Sci U S A
October 2024
Article Synopsis
- The study examines abrupt climate changes during the Pleistocene Ice Ages, known as Dansgaard-Oeschger (DO) oscillations, using Greenland ice cores to analyze temperature shifts and their potential long-term impacts.
- It introduces new ice-core records from southern and eastern Greenland to enhance understanding of DO event magnitudes and creates a multiproxy assessment of their effects across Greenland.
- The findings suggest that variations in wintertime sea ice in the North Atlantic subpolar gyre are crucial for explaining DO variability, and that changes in vapor source distribution, rather than site temperature, mainly influence Greenland's isotope signals during these climate transitions.
The last glacial period was punctuated by cold intervals in the North Atlantic region that culminated in extensive iceberg discharge events. These cold intervals, known as Heinrich Stadials, are associated with abrupt climate shifts worldwide. Here, we present CO measurements from the West Antarctic Ice Sheet Divide ice core across Heinrich Stadials 2 to 5 at decadal-scale resolution.
View Article and Find Full Text PDFMutualistic networks are key for the creation and maintenance of biodiversity, yet are threatened by global environmental change. Most simulation models assume that network structure remains static after species losses, despite theoretical and empirical reasons to expect dynamic responses. We assessed the effects of experimental single bumblebee species removals on the structure of entire flower visitation networks.
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