Antarctic Futures: An Assessment of Climate-Driven Changes in Ecosystem Structure, Function, and Service Provisioning in the Southern Ocean
Annual Review of Marine Science, Issue 12, pages 87-120, 2020. 10.1146/annurev-marine-010419-011028.
In this article, we analyze the impacts of climate change on Antarctic marine ecosystems. Observations demonstrate large-scale changes in the physical variables and circulation of the Southern Ocean driven by warming, stratospheric ozone depletion, and a positive Southern Annular Mode. Alterations in the physical environment are driving change through all levels of Antarctic marine food […]
Clim. Dyn., Issue 52, pages 1613, 2019. 10.1007/s00382-018-4242-z.
Global and regional ocean and sea ice reanalysis products (ORAs) are increasingly used in polar research, but their quality remains to be systematically assessed. To address this, the Polar ORA Intercomparison Project (Polar ORA-IP) has been established following on from the ORA-IP project. Several aspects of ten selected ORAs in the Arctic and Antarctic were […]
Clim. Dyn., Issue 52, pages 3157, 2019. 10.1007/s00382-018-4318-9.
This study explores the prediction skill of the northern hemisphere (NH) sea ice thickness (SIT) modes of variability in a state-of-the-art coupled forecast system with respect to two statistical forecast benchmarks. Application of the K-means clustering method on a historical reconstruction of SIT from 1958 to 2013, produced by an ocean-sea-ice general circulation model, identifies […]
Geophysical Research Letters, Issue 10, pages 4991-5001, 2018. https://doi.org/10.1029/2017GL076870.
Arctic freshwater content (FWC) has increased significantly over the last two decades, with potential future implications for the Atlantic meridional overturning circulation down stream. We investigate the relationship between Arctic FWC and atmospheric circulation in the control run of a coupled climate model. Multiple linear lagged regression is used to extract the response of total […]
Regional Environmental Change, pages 1-16, 2018 . https://doi.org/10.1007/s10113-018-1395-6.
Marine social-ecological conditions in the Arctic are rapidly changing. With many transboundary issues, such as shifting ranges of fisheries, biodiversity loss, sea ice retreat, economic development and pollution, greater pan-Arctic assessment and co-management are necessary. We adapted the Ocean Health Index (OHI) to compile pan-Arctic data and evaluate ocean health for nine regions above the […]
Time-lapse imagery of Adélie penguins reveals differential winter strategies and breeding site occupation
PLOS ONE, Issue 3, 2018. 10.1371/journal.pone.0193532.
Polar seabirds adopt different over-wintering strategies to survive and build condition during the critical winter period. Penguin species either reside at the colony during the winter months or migrate long distances. Tracking studies and survey methods have revealed differences in winter migration routes among penguin species and colonies, dependent on both biotic and abiotic factors […]
Biology Letters, Issue 3, 2018. https://doi.org/10.1098/rsbl.2017.0702.
The rapid decline in Arctic sea ice (ASI) extent, area and volume during recent decades is occurring before we can understand many of the mechanisms through which ASI interacts with biological processes both at sea and on land. As a consequence, our ability to predict and manage the effects of this enormous environmental change is […]
Climate Dynamics, Issue 9-10, pages 3833–3847, 2018. 10.1007/s00382-017-3849-9.
The appearance of winter deep mixed layers in the Arctic Ocean under a warming climate is investigated with the HiGEM coupled global climate model. In response to a four times increase of atmospheric CO2 levels with respect to present day conditions, the Arctic Basin becomes seasonally ice-free. Its surface becomes consequently warmer and, on average, […]
Peeking into the bleak midwinter- investigating non-breeding strategies of seabirds using a camera netwo
The Auk: Ornithological Advances, Issue 3, pages 520-529, 2017. https://doi.org/10.1642/AUK-16-69.1.
When monitoring species with extensive ranges in harsh climates, comprehensive studies across a species’ range are both logistically and technically challenging and therefore rare. Such scarcity in data collection is particularly true in the polar regions where sea ice and weather constraints prevent widespread access to sites for much of the year, specifically during winter. […]
Shrub growth and expansion in the Arctic tundra: an assessment of controlling factors using an evidence-based approach
Environmental Research Letters, Issue 8, 2017. 10.1088/1748-9326/aa7989.
Woody shrubs have increased in biomass and expanded into new areas throughout the Pan-Arctic tundra biome in recent decades, which has been linked to a biome-wide observed increase in productivity. Experimental, observational, and socio-ecological research suggests that air temperature—and to a lesser degree precipitation—trends have been the predominant drivers of this change. However, a progressive […]