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77 results for “circumpolar”
Deep convection induce strong proto-Antarctic Circumpolar Current
<p>This dataset includes model outputs of a high-resolution model with realistic late Eocene topography, which is applied to test the sensitivity of the proto-ACC to late Eocene and modern surface buoyancy forcing. The included data can be used to analyse temperature, salinity, zonal velocity distribution, eddy kinetic energy, and mixed layer depth in late Eocene Southern Ocean.</p>
Data for the figures of Sasaki et al. entitled "Turbulence across the Antarctic Circumpolar Current in the Indian Southern Ocean: Micro-Temperature Measurements and Finescale Parameterizations"
<p>1) Microstructure.nc includes profiles of epsilon and diapycnal diffusivity obtained from FP07 measurements.</p> <p>2) Fine_parameters.nc includes profiles of buoyancy frequency (N), shear-strain ratio, normalized internal wave energy, and polarization ratio of the counterclockwise (CCW) versus the clockwise (CW) component of the shear.</p> <p>3) epsilon_FineParam.nc includes profiles of epsilon calculated by finescale parameterizations. The subscript of each variable (eps_Fine_X) in this file corresponds to the row letter (a-l) of Table. 1.</p> <p>4) Fine_spectral_shape.nc includes profiles of Hstrain and spectral slope (s). </p>
Data from: Geographic structure in the Southern Ocean circumpolar brittle star Ophionotus victoriae (Ophiuridae) revealed from mtDNA and single nucleotide polymorphism data
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Data from: Vicariance, long-distance dispersal, and regional extinction–recolonization dynamics explain the disjunct circumpolar distribution of the arctic-alpine plant Silene acaulis
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Data from: Historical introgression and the role of selective vs. neutral processes in structuring nuclear genetic variation (AFLP) in a circumpolar marine fish, the capelin (Mallotus villosus)
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Data from: Circumpolar diversity and geographic differentiation of mtDNA in the critically endangered Antarctic blue whale (Balaenoptera musculus intermedia)
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The oldest Devonian circumpolar ray-finned fish?
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Data from: Linking genetic and ecological differentiation in an ungulate with a circumpolar distribution
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Summer circumpolar acoustic occurrence and call rates of Ross (Ommatophoca rossii) and leopard (Hydrurga leptonyx) seals in the Southern Ocean
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Data from: Implications of the circumpolar genetic structure of polar bears for their conservation in a rapidly warming Arctic
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Data from: Genomics detects population structure within and between ocean basins in a circumpolar seabird: the white-chinned petrel
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Distribution. Circumpolar in the Southern Ocean. in Phocidae
Distribution. Circumpolar in the Southern Ocean.
Meteorological observations and context of the 2017 Antarctic Circumpolar sailing campaign OceanoScientific
<p>This animation shows the locations of air pressure meteorological data collected by the 2017 OceanoScientific sailing campaign under the 40th Southern parallel in the Antarctic Circumpolar Current.</p> <p>Each second of the animation includes 24 frames. On each frame, the dots show locations of air pressure data within 12 hours of the date and time indicated (respectively) at the bottom and right-hand-side. The various colors differentiate between the origins of the data, as received from the Global Telecommunication System (GTS): red for OceanoScientific, green for other Voluntary Observing Ships (VOS), and blue for data buoys. The contours represent 6-hour moving averages of mean-sea-level pressure from the ERA5 reanalysis.</p>
Thermokarst disturbance responses to climate warming across the circumpolar permafrost regions from 1990 to 2023
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Figure 2 from: Eleaume M, Améziane N (2013) Circumpolar dataset of sequenced specimens of Promachocrinus kerguelensis (Echinodermata, Crinoidea). ZooKeys 315: 55-64. https://doi.org/10.3897/zookeys.315.5673
Figure 2 - Promachocrinus kerguelensis sampling stations in the Southern Ocean. Triangles represent the sampled stations, circles represent the bibliographic data, numbers are sequenced specimens per region (modified from Hemery et al. 2012).
Figure 3 from: Eleaume M, Améziane N (2013) Circumpolar dataset of sequenced specimens of Promachocrinus kerguelensis (Echinodermata, Crinoidea). ZooKeys 315: 55-64. https://doi.org/10.3897/zookeys.315.5673
Figure 3 - Proportion of specimens per phylogroup per year and sampling region. Acronyms of regions are given in Figure 2, A - F are the names of the 7 COI haplogroups found in Hemery et al. 2012.
Figure 1 from: Eleaume M, Améziane N (2013) Circumpolar dataset of sequenced specimens of Promachocrinus kerguelensis (Echinodermata, Crinoidea). ZooKeys 315: 55-64. https://doi.org/10.3897/zookeys.315.5673
Figure 1 - Synoptic of the procedure used to generate the dataset. Yellow exclamatory marks show where the data quality has been checked.
Geologic history of the south circumpolar region (SCR) of the Moon (Supplementary material)
<p>Supplementary material of publication (Krasilnikov et al., 2023):</p> <ul> <li>SP_Geological_Map_v1.3.rar - ArcGIS project contain results of geological mapping of South Circumpolar Region</li> </ul> <p> </p> <ul> <li>Fig 13a. High-resolution geologic map.</li> <li>Fig 13b. High-resolution geologic map, description of map units.</li> <li>Fig. 2S. High-resolution map units divided by age: (a) Copernican, Eratosthenian and undifferentiated ages; (b) Imbrian period; (c) Nectarian period; (d) pre-Nectarian period.</li> <li>Fig. 3S. Process of geologic map creation.</li> </ul> <p>In the new version (v.1.3), minor geological map corrections were made.<br> Version corrections:<br> - Correction of Ilp2 layer color (now it is 28, 153, 246 RGB).<br> - Correction of the line width of linear objects.<br> - Maped about 582 km of lobate scarps based on the data from Mishra and Kumar, (2022)* and mapping at 1:300000 scale.</p>
Fire Intensity and Burn Severity Metrics for Circumpolar Boreal Forests, 2001-2013
This data set provides products characterizing immediate and longer-term ecosystem changes from fires in the circumpolar boreal forests of Northern Eurasia and North America. The data include fire intensity (fire radiative power; FRP), increase in spring albedo, decrease in tree cover, normalized burn ratio, normalized difference vegetation index, and land surface temperature, as well as three derived fire metrics: crown scorch, vegetation destruction, and fire-induced tree mortality. Longer-term changes are indicated by mean albedo determined 5-12 years after fires, mean percent decrease in tree cover 5-7 years after fires, and mean annual burned percentage. The data cover the period 2001-2013 and are provided at quarter, half, and one degree resolutions for boreal forests within the 40 to 80 degree North circumpolar region. The data were derived from a variety of sources including MODIS products, climate reanalysis data, and forest inventories. A data file with identified boreal forest area (pixels), as defined by climate and vegetation type, and a file with the defined North American and Eurasian boreal forest study regions are included.
Trends of Thermal, Wetness, and Vegetative Change in the Circumpolar Arctic
This dataset provides estimates of trends in temperature, moisture, and vegetation changes over the circumpolar Arctic. Time series trends were measured by the Theil-Sen slope and associated p-values for a variety of variables including 2-meter air temperature, precipitation, soil moisture, non-frozen season days, permafrost active layer thickness, snow cover, vapor pressure deficit, land surface water fraction, normalized difference vegetation index (NDVI), and vegetation optical depth. Trends were measured annually and over specific seasons of spring (March to May), summer (June to August), autumn (September to November) and winter (December to February), and for the 1980-2020 and 1997-2020 time periods, depending on the variable and original data availability. Emerging hotspots of change were identified for the same variables and seasons, but only over the 1997-2020 period. In addition, a multivariate ranking was used to create combined hotspot layers to show areas of substantial changes in the thermal environment, moisture, and vegetation; these themes reflect landscape changes considered to be detrimental (e.g., a threat) to ecosystems and human populations. Ancillary files provide the boundaries of study regions, Brown permafrost regions, and a land cover product. The data are provided in cloud optimized GeoTIFF (COG) and shapefile formats.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.