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184 results for “high latitude”
FIGURE 5 in Southern high latitude squat lobsters II: description of Uroptychus macquariae sp. nov. from Macquarie Ridge
FIGURE 5. Top row: Uroptychus macquariae n.sp., carapace, Hjort Seamount, Macquarie Ridge (NIWA 40904). A, female pcl 5.5 mm. B, male pcl 7.4 mm. C, male pcl 11.8 mm. Bottom row: Uroptychus insignis (Henderson, 1885). D. female pcl 4.4 mm, Kerguelen Islands (MNHN IU-2010-5432), E. paralectotype, male pcl 4.5 mm, Prince Edward Islands (BMNH 1902.10.2.9–14), F. female pcl 7.2 mm, Kerguelen Islands (AM P97999), G. paralectotype, male pcl 10.7 mm, Prince Edward Islands (BMNH 1902.10.2.9–14), H. lectotype, ov. female, pcl 10.6 mm, Prince Edward Islands (BMNH 1902.10.2.9–14). Scale = 5 mm. (Modified after Ahyong et al. 2015).
FIGURE 6 in Southern high latitude squat lobsters II: description of Uroptychus macquariae sp. nov. from Macquarie Ridge
FIGURE 6. Colour in life. A, Uroptychus macquariae n.sp., male pcl 11.8 mm, Hjort Seamount, Macquarie Ridge, TAN0803/ 98 (NIWA 40904); B, male pcl 13.1 mm, Seamount 8, Macquarie Ridge, TAN0803/88 (NIWA 40664, lost at sea). Scale = 10 mm.
FIGURE 1 in Southern high latitude squat lobsters II: description of Uroptychus macquariae sp. nov. from Macquarie Ridge
FIGURE 1. Distribution records of Uroptychus insignis (circles) and U. macquariae n.sp. (crosses) from Macquarie Ridge (1), Prince Edward Islands (2), Crozet Islands (3), Kerguelen Islands (4) and Amsterdam Island (5). The map is based upon bathymetry data from the GEBCO_2008 Grid, version 20100927, www.gebco.net.
FIGURE 4. Uroptychus macquariae n in Southern high latitude squat lobsters II: description of Uroptychus macquariae sp. nov. from Macquarie Ridge
FIGURE 4. Uroptychus macquariae n. sp., Holotype, female ov., pcl 10.5 mm, Hjort Seamount, Macquarie Ridge (AM P100957, ex. NIWA 40904). A, dorsal habitus. B, carapace, right lateral. C, right antenna, ventral view. D, right maxilliped 3, lateral. E, right crista dentata. F, right P1 ischiomerus, ventral. G, sternal plastron. H, telson. Scale: A, B, F = 2.5 mm; C, D, G, H = 1.25 mm; E = 0.5 mm. (Modified after Ahyong et al. 2015)
Model output for: "Freshwater input from glacier melt outside Greenland alters modeled northern high-latitude ocean circulation"
<p>NEMO-ANHA4 and OGGM model output files used in the article: "Freshwater input from glacier melt outside Greenland alters modeled northern high-latitude ocean circulation".</p> <p> </p> <p>halfsolid.zip and noOGGM.zip contain output of the runs called <em>halfsolid</em> and <em>noOGGM</em> in the article. output_data_OGGM.zip contains the output files of OGGM runs.</p>
Data from: Icing-related injuries in polar bears (Ursus maritimus) at high latitudes
<p>Climate change has broad ecological implications for wildlife, especially for species that rely on temperature-sensitive habitats. For polar bears (<em>Ursus maritimus</em>), loss of Arctic sea ice reduces access to prey and lengthens seasonal fasting periods leading to behavioral, nutritional, and reproductive impacts that may result in population declines. Secondary factors, such as disease and contaminants can exacerbate primary stressors and new health-related conditions are likely to emerge. For example, once unusual but now increasingly frequent warming cycles are creating unprecedented icing conditions that have demographic consequences for cold-adapted mammals.</p> <p>We report on icing-related lesions observed in wild polar bears during live-capture research in two high-latitude subpopulations, Kane Basin (KB) and East Greenland (EG), between 2012 and 2022. We observed ice build-up, hair loss (alopecia), and skin ulcerations primarily affecting the feet of adult bears as well as other parts of the body. The most severely affected individuals had blocks of ice up to 30 cm in diameter adhered to the foot pads, deep, bleeding ulcerations of foot pads and exhibited lameness. These injuries have not been observed during previous research in these areas or reported in the scientific literature, suggesting this may be a new phenomenon. To provide context for our observations, we conducted interviews with Indigenous polar bear subsistence hunters in West and East Greenland and Nunavut to document Indigenous knowledge about the potential causes and frequency of these injuries.</p>
The high latitude ionospheric response to the major May 2024 geomagnetic storm: A synoptic view (Datasets)
<p>Manually scaled ionosonde, ionosonde drift, and ISR datasets for the paper. </p>
on the annual asymmetry of high-latitude sporadic-F
<p>sami3 dataset used in the paper 'on the annual asymmetry of high-latitude sporadic-F'</p>
Sea ice feedbacks cause more greenhouse cooling than greenhouse warming at high northern latitudes on multi-century timescales
<p>Figure and data files for Kay et al. (revised) to Environmental Research Letters, September 6, 2024</p>
The simulation data for paper: Permafrost Response in Northern High-Latitude Regions to 1.5 °C Warming and Overshoot Scenarios Achieved via Solar Radiation Modification
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Importance of Longwave Radiative Forcing by Icy Clouds in Maintaining Miocene High-latitude Warmth
<p>Supporting Information for<strong> Importance of Longwave Radiative Forcing by Icy Clouds in Maintaining Miocene High-latitude Warmth</strong></p> <p>NetCDF files: B.MIO_400_C5.cam2.h0.last50yr_climo_monthly.nc is from our control experiment, and B.MIO_400_C5_MK_TeoKor_Dem1SLF_2.cam2.h0.last50yr_climo_monthly is from our modified experiment.</p> <p>cldwat2m_micro.F90, microp_aero.F90, microp_driver.F90, and zm_conv.F90 are the source code used in our modified experiment. </p> <p> </p>
Data from: Climatic thresholds shape northern high-latitude fire regimes and imply vulnerability to future climate change
Boreal forests and arctic tundra cover 33% of global land area and store an estimated 50% of total soil carbon. Because wildfire is a key driver of terrestrial carbon cycling, increasing fire activity in these ecosystems would likely have global implications. To anticipate potential spatiotemporal variability in fire-regime shifts, we modeled the spatially explicit 30-yr probability of fire occurrence as a function of climate and landscape features (i.e. vegetation and topography) across Alaska. Boosted regression tree (BRT) models captured the spatial distribution of fire across boreal forest and tundra ecoregions (AUC from 0.63–0.78 and Pearson correlations between predicted and observed data from 0.54–0.71), highlighting summer temperature and annual moisture availability as the most influential controls of historical fire regimes. Modeled fire–climate relationships revealed distinct thresholds to fire occurrence, with a nonlinear increase in the probability of fire above an average July temperature of 13.4°C and below an annual moisture availability (i.e. P-PET) of approximately 150 mm. To anticipate potential fire-regime responses to 21st-century climate change, we informed our BRTs with Coupled Model Intercomparison Project Phase 5 climate projections under the RCP 6.0 scenario. Based on these projected climatic changes alone (i.e. not accounting for potential changes in vegetation), our results suggest an increasing probability of wildfire in Alaskan boreal forest and tundra ecosystems, but of varying magnitude across space and throughout the 21st century. Regions with historically low flammability, including tundra and the forest–tundra boundary, are particularly vulnerable to climatically induced changes in fire activity, with up to a fourfold increase in the 30-yr probability of fire occurrence by 2100. Our results underscore the climatic potential for novel fire regimes to develop in these ecosystems, relative to the past 6000–35 000 yr, and spatial variability in the vulnerability of wildfire regimes and associated ecological processes to 21st-century climate change.
TIEGCM simulation for high-latitude zonal winds
<p>Description of Data in the "windwall_data.mat":</p> <p>UN: modeled zonal winds (m/s)</p> <p>DUDT_UN: the acceleration due to total forces (cm/s^2);</p> <p>FD_UN: the acceleration due to ion drag (cm/s^2);</p> <p>ZL: the acceleration due to pressure gradient (cm/s^2);</p> <p>VIS_VERT_UN: the acceleration due to viscosity (cm/s^2);</p> <p>COR_UN: the acceleration due to Coriolis (cm/s^2); </p> <p>CENT_UN: the acceleration due to centrifugal (cm/s^2);</p> <p>NE: ionospheric electron density (cm^{-3})</p> <p>UI: zonal ExB (m/s)</p> <p>"TIEGCM_modeled_UN_windwall_fig2.rar" is modeled wind data in Figure 2</p> <p>"clt_*.mat" and "cmlat_*.mat" are geomagnetic local time and latitudes,</p>
Open clusters in LISC 2: high Galactic latitude ones
<p>The basic information of 56 new cluster candidates and the colour-magnitude diagrams of some ones that were fitted are given here.</p>
Data from: 'Potential non-linearities in the high latitude circulation and ozone response to Stratospheric Aerosol Injection'
<p>Data used in: 'Potential non-linearities in the high latitude circulation and ozone response to Stratospheric Aerosol Injection' by Bednarz et al., 2023, submitted to Geophysical Research Letters. </p>
Data from: Crown asymmetry in high latitude forests: disentangling the directional effects of tree competition and solar radiation
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Data from: When east meets west: population structure of a high- latitude resident species, the boreal chickadee (Poecile hudsonicus)
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Data from: Extrapolating multi-decadal plant community changes based on medium-term experiments can be risky: evidence from high-latitude tundra
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Data from: Birth dates vary with fixed and dynamic maternal features, offspring sex, and extreme climatic events in a high-latitude marine mammal
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Increasing pollen production at high latitudes across animal-pollinated flowering plants
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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.