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Title |
Major Issues in Simulating Some Arctic Snowpack Properties Using Current Detailed Snow Physics Models: Consequences for the Thermal Regime and Water Budget of Permafrost |
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Journal |
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Year |
2019 |
Publication |
Journal of Advances in Modeling Earth Systems |
Abbreviated Journal |
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Volume |
11 |
Issue |
1 |
Pages |
34-44 |
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Keywords |
Arctic model permafrost snow temperature water vapor |
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Programme |
1042 |
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1942-2466 |
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1942-2466 |
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yes |
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Call Number |
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Serial |
7492 |
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Author |
Kyriakos Balidakis, Roman Sulzbach, Linus Shihora, Christoph Dahle, Robert Dill, Henryk Dobslaw |
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Title |
Atmospheric Contributions to Global Ocean Tides for Satellite Gravimetry |
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Journal |
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Year |
2022 |
Publication |
Journal of Advances in Modeling Earth Systems |
Abbreviated Journal |
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Volume |
14 |
Issue |
11 |
Pages |
e2022MS003193 |
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Keywords |
atmospheric forcing atmospheric tides de-aliasing ERA5 GRACE-FO ocean tides |
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688 |
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ISSN |
1942-2466 |
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yes |
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Call Number |
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Serial |
8563 |
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Author |
Kristin N. Barton, Nairita Pal, Steven R. Brus, Mark R. Petersen, Brian K. Arbic, Darren Engwirda, Andrew F. Roberts, Joannes J. Westerink, Damrongsak Wirasaet, Michael Schindelegger |
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Title |
Global Barotropic Tide Modeling Using Inline Self-Attraction and Loading in MPAS-Ocean |
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Journal |
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Year |
2022 |
Publication |
Journal of Advances in Modeling Earth Systems |
Abbreviated Journal |
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Volume |
14 |
Issue |
11 |
Pages |
e2022MS003207 |
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Keywords |
barotropic tides E3SM MPAS-Ocean numerical ocean modeling self-attraction and loading surface tides |
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Abstract |
We examine ocean tides in the barotropic version of the Model for Prediction Across Scales (MPAS-Ocean), the ocean component of the Department of Energy Earth system model. We focus on four factors that affect tidal accuracy: self-attraction and loading (SAL), model resolution, details of the underlying bathymetry, and parameterized topographic wave drag. The SAL term accounts for the tidal loading of Earth's crust and the self-gravitation of the ocean and the load-deformed Earth. A common method for calculating SAL is to decompose mass anomalies into their spherical harmonic constituents. Here, we compare a scalar SAL approximation versus an inline SAL using a fast spherical harmonic transform package. Wave drag accounts for energy lost by breaking internal tides that are produced by barotropic tidal flow over topographic features. We compare a series of successively finer quasi-uniform resolution meshes (62.9, 31.5, 15.7, and 7.87 km) to a variable resolution (45 to 5 km) configuration. We ran MPAS-Ocean in a single-layer barotropic mode forced by five tidal constituents. The 45 to 5 km variable resolution mesh obtained the best total root-mean-square error (5.4 cm) for the deep ocean (1,000 m) tide compared to TPXO8 and ran twice as fast as the quasi-uniform 8 km mesh, which had an error of 5.8 cm. This error is comparable to those found in other forward (non-assimilative) ocean tide models. In future work, we plan to use MPAS-Ocean to study tidal interactions with other Earth system components, and the tidal response to climate change. |
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688 |
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ISSN |
1942-2466 |
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Notes |
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yes |
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Call Number |
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Serial |
8572 |
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Journal |
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Year |
2017 |
Publication |
Ecology |
Abbreviated Journal |
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Volume |
98 |
Issue |
4 |
Pages |
940-951 |
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Keywords |
Anna Karenina Principle Antarctica asynchrony Bayesian hierarchical model climate change phenology Pygoscelis adeliae quantile regression |
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Abstract |
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Programme |
109 |
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ISSN |
1939-9170 |
ISBN |
1939-9170 |
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yes |
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Call Number |
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Serial |
7185 |
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Author |
Amandine Gamble, Romain Garnier, Thierry Chambert, Olivier Gimenez, Thierry Boulinier |
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Title |
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Journal |
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Year |
2019 |
Publication |
Ecology |
Abbreviated Journal |
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Volume |
101 |
Issue |
2 |
Pages |
e02923 |
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Keywords |
detectability eco-epidemiology immunity persistence sampling strategy study design wildlife |
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Abstract |
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Programme |
333,1151 |
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Thesis |
Bachelor's thesis |
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ISSN |
1939-9170 |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
7715 |
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Journal |
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Year |
2021 |
Publication |
Ecology |
Abbreviated Journal |
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Volume |
103 |
Issue |
3 |
Pages |
e3611 |
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Keywords |
Antarctica Asteroidea benthos biometric measurements Echinodermata elemental contents invertebrates marine ecosystems sea stars Southern Ocean stable isotopes subantarctic Islands |
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Abstract |
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Programme |
1044 |
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ISSN |
1939-9170 |
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Approved |
yes |
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Call Number |
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Serial |
8445 |
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Author |
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Title |
A keystone avian predator faces elevated energy expenditure in a warming Arctic |
Type |
Journal |
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Year |
2023 |
Publication |
Ecology |
Abbreviated Journal |
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Volume |
104 |
Issue |
5 |
Pages |
e4034 |
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Keywords |
activity budgets climate change daily energy expenditure dovekie ecotoxicology mercury plasticity sea surface temperature |
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Abstract |
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Programme |
388 |
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ISSN |
1939-9170 |
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1939-9170 |
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yes |
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Call Number |
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Serial |
8617 |
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Title |
Food source diversity, trophic plasticity, and omnivory enhance the stability of a shallow benthic food web from a high-Arctic fjord exposed to freshwater inputs |
Type |
Journal |
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Year |
2021 |
Publication |
Limnology and Oceanography |
Abbreviated Journal |
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Volume |
66 |
Issue |
S1 |
Pages |
S259-S272 |
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Keywords |
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Abstract |
Under climate change, many Arctic coastal ecosystems receive increasing amounts of freshwater, with ecological consequences that remain poorly understood. In this study, we investigated how freshwater inputs may affect the small-scale structure of benthic food webs in a low-production high-Arctic fjord (Young Sound, NE Greenland). We seasonally sampled benthic invertebrates from two stations receiving contrasting freshwater inputs: an inner station exposed to turbid and nutrient-depleted freshwater flows and an outer station exposed to lower terrestrial influences. Benthic food web structure was described using a stable isotope approach (?13C and ?15N), Bayesian models, and community-wide metrics. The results revealed the spatially and temporally homogeneous structure of the benthic food web, characterized by high trophic diversity (i.e., a wide community isotopic niche). Such temporal stability and spatial homogeneity mirrors the high degree of trophic plasticity and omnivory of benthic consumers that allows the maintenance of several carbon pathways through the food web despite different food availability. Furthermore, potential large inputs of shelf organic matter together with local benthic primary production (i.e., macroalgae and presumably microphytobenthos) may considerably increase the stability of the benthic food web by providing alternative food sources to locally runoff-impacted pelagic primary production. Future studies should assess beyond which threshold limit a larger increase in freshwater inputs might cancel out these stability factors and lead to marked changes in Arctic benthic ecosystems. |
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Programme |
1158 |
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ISSN |
1939-5590 |
ISBN |
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yes |
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Call Number |
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Serial |
6791 |
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Author |
Jan Jansen, Piers K. Dunstan, Nicole A. Hill, Philippe Koubbi, Jessica Melbourne-Thomas, Romain Causse, Craig R. Johnson |
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Title |
Integrated assessment of the spatial distribution and structural dynamics of deep benthic marine communities |
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Journal |
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Year |
2020 |
Publication |
Ecological Applications |
Abbreviated Journal |
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Volume |
30 |
Issue |
3 |
Pages |
e02065 |
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Keywords |
Antarctica continental shelf deep sea ecosystem dynamic ecosystem structure qualitative network model Southern Ocean spatial model species archetype model upper slope |
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Abstract |
Characterizing the spatial distribution and variation of species communities and validating these characteristics with data from the field are key elements for an ecosystem-based approach to management. However, models of species distributions that yield community structure are usually not linked to models of community dynamics, constraining understanding and management of the ecosystem, particularly in data-poor regions. Here we use a qualitative network model to predict changes in Antarctic benthic community structure between major marine habitats characterized largely by seafloor depth and slope, and use multivariate mixture models of species distributions to validate the community dynamics. We then assess how future increases in primary production associated with anticipated loss of sea-ice may affect the ecosystem. Our study shows how both spatial and structural features of ecosystems in data-poor regions can be analyzed and possible futures assessed, with direct relevance for ecosystem-based management. |
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281 |
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ISSN |
1939-5582 |
ISBN |
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Approved |
yes |
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Call Number |
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Serial |
8263 |
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Author |
Bonadonna, F. Caro, S Brooke, M |
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Title |
Olfactory sex recognition investigated in Antarctic prions |
Type |
Journal Article |
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Year |
2009 |
Publication |
PLOS ONE |
Abbreviated Journal |
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Volume |
4 |
Issue |
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Pages |
e4148 |
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354 |
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ISSN |
1932-6203 |
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Approved |
yes |
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Call Number |
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Serial |
5733 |
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