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10,016 results for “Observation”
Raw data for "Direct Observation of Atmospheric Turbulence with a Video-rate Wide-field Wavefront Sensor" (Part. 2)
<p>Raw data for "Direct Observation of Atmospheric Turbulence with a Video-rate Wide-field Wavefront Sensor" (Part. 2). For usage, please refer to https://github.com/freemercury/Widefield_wavefront_sensor.</p>
ScintiPi3 data sets for "First observations of severe scintillation over low-to-mid latitudes driven by quiet-time extreme equatorial plasma bubbles: conjugate measurements enabled by citizen science initiatives"
<p>ScintPi 3.0 data sets for "First observations of severe scintillation over low-to-mid latitudes driven by quiet-time extreme equatorial plasma bubbles: conjugate measurements enabled by citizen science initiatives" by Sousasantos et al. (2024).</p>
Data and scripts for "Unraveling secondary ice production in winter orographic clouds through a synergy of in-situ observations, remote sensing and modeling"
<div> <div> <div>This repository contains field observations and processed data from the Weather Research and Forecasting (WRF) model simulations and the Cloud Resolving Model Radar Simulator (CR-SIM), alongside scripts designed to reproduce the figures presented in the paper titled "Unraveling Secondary Ice Production in Winter Orographic Clouds through a Synergy of In-Situ Observations, Remote Sensing, and Modeling." The in-situ and remote sensing measurements were conducted at Mount Helmos in Peloponnese as part of the CALISHTO campaign (https://calishto.panacea-ri.gr/).</div> </div> </div> <div>Preprint accessible at: https://doi.org/10.21203/rs.3.rs-3502790/v1</div>
Observations of a PT-like phase transition and limit cycle oscillations in non-reciprocally coupled optomechanical oscillators levitated in vacuum
<p>Trajectories of optically levitated particles in vacuum. Trajectories are recorded using quadrant photodiode and ultra-fast CMOS camera. The readme file with more detailed description is added.</p>
Data for GRL paper "On the move: 2023 observations on real time graben formation, Grindavík, Iceland"
<div><strong>This repository contains following data:</strong></div> <div> </div> <div><strong>1. Seismicity data </strong></div> <div> • file: <em>Grindavik_Relocations.txt </em></div> <div>Earthquake relative locations </div> <div> </div> <div><strong>2. InSAR data </strong></div> <div> • file: <em>Grindavik_nearU_m.tif</em></div> <div>Near-Up vertical displacements during 10-11 November 2023 derived from pixel offset tracking of SAR imagery from ICEYE, COSMO-SkyMed and Sentinel-1 satellites used in Fig. 2.</div> <div>The values are in meters and relative (the 0 is arbitrary).</div> <div>The coordinate system is WGS84 (geographic, EPSG:4326), the resolution is about 30 m East and 20 m North.</div> <div> </div> <div><strong>3. Lidar-derived DEM data </strong></div> <div> • file: <em>2023-11-17_Grindavik_east-west_ground_epsg8088_50cm.tif</em><br> • file: <em>2023-11-23_Grindavik_east-west_ground_epsg8088_50cm.tif</em><br> • file: <em>2023-12-11_Grindavik_east-west_ground_epsg8088_50cm.tif</em></div> <div>Reference coordinate system - ISN2016, EPSG:8088, resolution is 50 cm, used in Fig. 3</div> <div>Time of individual campaigns:</div> <div>2023-11-17 started 13:25 and ended 16:48</div> <div>2023-11-23 started 11:25 and ended 13:41</div> <div>2023-12-11 started 11:08 and ended 13:23<br><br><strong>4. GNSS data</strong><br> • file: <em>de_Pascale_etal_GPS.zip </em></div> <div>24-hour GPS solutions made using Gipsy/Oasis v 6.4.<br>Format: decimal_year east north up (in m) uncertainty_east uncertainty_north uncertainty_up covariance_en covariance_eu covariance_nu time_seconds time_YYYYMMDDhhmmss<br><br> • file: <em>SUDV_rel_VMOS_rt.txt</em><br>Radial and transverse horizontal displacement of SUDV relative to VMOS (5-minute solutions used in Fig. 4)<br>Format: date (YYYY MM DD hh mm ss), along-baseline displacement, across-baseline displacement (in mm)<br> <br> • file: <em>VMOS_a.txt </em><br> • file: <em>GRIC_a.txt </em><br> • file: <em>SUDV_a.txt </em><br>5-minute GPS solutions (in mm)<br>Format: YYYY MM DD hh mm ss north east up<br> <br> • file: <em>calcdisps_5min_10Nov1600_to_12nov0000.dat </em><br>Displacements from 16:00 on Nov 10 to 00:00 on 12 Nov, 2023 <br>Format: station latitude longitude east north up (in mm) uncertainties (in east north up)</div> <p> </p>
Research data supporting "Observation of nonlinear response and Onsager regression in a photon Bose-Einstein condensate"
<p>This repository contains the data presented in the manuscript titled "Observation of nonlinear response and Onsager regression in a photon Bose-Einstein condensate" by A. Sazhin et al., Nature Communications <strong>15</strong>, Article number: <span>4730</span> (<span>2024</span>), arXiv:2403.04705. The files named 'fig{1,2,3,4}.xlsx' contain the final data sets relevant to reproduce all plots shown in the paper.</p>
Data for: Seawater intrusions in the observed grounding zone of Petermann Glacier causes extensive retreat
<p>Understanding grounding line dynamics is critical for projecting glacier evolution and sea level rise. Recent observations from satellite radar interferometry reveal rapid grounding line migration forced by oceanic tides that are several kilometers larger than predicted by hydrostatic equilibrium alone, indicating that the transition from grounded to floating ice is more complex than previously thought. Recent studies suggest that seawater intrusions beneath grounded ice may play a role in glacier dynamics. Here, we investigate their impact on the evolution of Petermann Glacier, Greenland, using an ice sheet model. We compare the model results with observed changes in grounding line position, velocity, and ice elevation between 2010 and 2022. If we exclude seawater intrusions, the model requires anomalously high melt rates to replicate the retreat. Conversely, we match the observed retreat with 3-km-long seawater intrusions with a maximum ice shelf melt rate of 50~m/yr, consistent with observations. We also obtain more realistic glacier speedup and ice thinning when including seawater intrusions in the model. We conclude that seawater intrusions play a critical role in the dynamics of Petermann Glacier. Including them in glacier flow models will make glaciers more sensitive to ocean warming and increase projections of sea level rise.</p>
Dataset for "Is the linear relationship between the slope and intercept observed in field emission S-K plots an artifact?"
<p>The dataset are in text format, the files to analyze and generate the figures are in jupyter format for python with a copy in pdf format.</p> <p>Description of files and folders :</p> <p><strong>I) Analyzed</strong></p> <p>This folder contains Fowler-Nordheim analysis of the I-V data in the folder Data, that where obtained in the publication "All field emission experiments are noisy, ... are any meaningful ?"</p> <p><strong>II) Data</strong></p> <p>This folder contains the different experimental I-V data</p> <p><strong>III) Numerical data<br></strong></p> <p>This folder contains the different noisy I-V data generated by the file "Simul"</p> <p><strong>IV) Fig1</strong></p> <p>This file generates the figure "MySK4.svg" based on the data in the folders <strong>I) Analyzed</strong> and <strong>III) Numerical data</strong></p> <p><strong>V) Fig2</strong></p> <p>This file analyses the data in the folder <strong>II) Data</strong> and then extract the parameters of their SK plot.</p> <p>It gathers the SK plot parameters of several work in the litterature.</p> <p>It plots "Slopm4.svg" and "Intm4.svg".</p> <p><strong>VI) Simul</strong></p> <p>This file generates the different noisy I-V data necessary fir Fig1</p> <p><strong>VII) FigSuppl</strong></p> <p>This file shows the different experimental Fowler-Nordheim plots obtained from the files in the folder <strong>II) Data</strong></p>
Recovering data of an observation of the Leonids in 1869 from the Lisbon Geophysical Observatory (Portugal)
<p>Number of meteors observed every five minutes by the staff of the Geophysical Observatory of Lisbon during the night from November 13 to 14, 1869.</p>
Replication of manuscript entitled "Multi-decadal climate variability and satellite biases have amplified model-observation discrepancies in tropical troposphere warming estimates"
<p>Replication of manuscript entitled "Multi-decadal climate variability and satellite biases have amplified model-observation discrepancies in tropical troposphere warming estimates".</p> <p>This page contains datasets used to replicate figures in a manuscript entitled "Multi-decadal climate variability and satellite biases have amplified model-observation discrepancies in tropical troposphere warming estimates". These ascii or netcdf files can be easily read by NCL, Fortran and others.</p> <p> </p>
Categorisation of monogenic disorders: Underlying a deficit of type I IFN activity / observed type I IFN signalling upregulation
<div>The last 20 years have seen the definition of human monogenic disorders and their autoimmune phenocopies underlying either defective or enhanced type I interferon (IFN) activity. These disorders delineate the impact of type I IFNs in natural conditions. Remarkably, only a narrow window of type I IFN activity is beneficial. Insufficient type I IFN predisposes humans to life-threatening viral diseases, albeit surprisingly few, with a central role in immunity to respiratory and cerebral viral infection. Excessive type I IFN, perhaps unexpectedly, appears to underlie a greater number of autoinflammatory and/or autoimmune conditions known as type I interferonopathies, whose study has revealed multiple molecular programs involved in the induction of type I IFN signaling. These observations suggest the manipulation of type I IFN activity to within a physiological range may be clinically relevant for the prevention and treatment of viral and inflammatory disease.</div>
Data for "Hunting for gravity waves in non-orographic winter storms using 3+ years of regional surface air pressure networks and radar observations"
<p>These data are shown in the figures included with the article "Hunting for gravity waves in non-orographic winter storms using 3+ years of regional surface air pressure networks and radar observations," submitted to Atmospheric Chemistry and Physics.</p>
Evaluation of seed-dispersal services by ants at a temperate pasture: Results of direct observations in an ant suppression experiment
<p><em>Ant dispersal</em></p> <p>Ants disperse seeds of many plant species adapted to myrmecochory. While advantages of this ant–plant mutualism for myrmecochorous plants (myrmecochores) have been previously studied in temperate region mostly in forests, our study system was a pasture. Moreover, we used a unique combination of observing the effect of ant‐activity suppression on ant dispersal and comparison of the contribution of ant and unassisted dispersal to the distance from mother plant. We established plots without and with ant‐activity suppression (enclosures). We offered diaspores of a myrmecochorous (<em>Knautia arvensis</em>), and a non‐myrmecochorous (<em>Plantago lanceolata</em>) species in a choice test and followed ants carrying diaspores during days and nights (focus of previous studies was on diurnal dispersal). We measured frequency and distances of ant dispersal and compared them with unassisted dispersal recorded using sticky trap method. The dispersal frequency was lower in enclosures (3.16 times). Ants strongly preferred diaspores of the myrmecochore to non‐myrmecochore with 586 and 42 dispersal events, respectively (out of 6400 diaspores of each species offered). Ant dispersal resulted in more even and on average longer distances (maximum almost tenfold longer, 994 cm) in comparison to unassisted dispersal. Ant dispersal altered the distribution of distances of the myrmecochore from roughly symmetric for unassisted dispersal to positively skewed. Ants dispersed heavier diaspores farther. Ants dropped the majority of diaspores during the dispersal (which reduces clustering of seeds), while several (11%) were carried into anthills. Anthills are disturbed microsites presumably favorable for germination in competitive habitats. Ants provided non‐negligible dispersal services to myrmecochorous <em>K. arvensis</em> but also, to a lesser extent, of non‐myrmecochorous <em>P. lanceolata</em>.</p> <p><em>Unassisted dispersal</em></p> <p>A sticky trap of the same size as the experimental plots of the cafeteria experiment (3 m × 3 m) was used to record unassisted dispersal (i.e., without any biotic dispersal agent, mostly by gravity and additionally wind). We used linoleum covered with insect glue to trap the falling diaspores. Five full‐sized individuals (with majority of infructescences with mature seeds) of <em>K. arvensis</em> were fixed in a water container in the center of the plot for approximately 10 days. The procedure was repeated five times during July and August. The distances of trapped diaspores were measured in the same manner as in the case of ant dispersal, thus the dispersal by ants and unassisted dispersal can be compared.</p>
EMM EMUS Observations of FUV Aurora on Mars: Dependence on Magnetic Topology, Local Time, and Season
<p>EMM EMUS Observations of FUV Aurora on Mars: Dependence on Magnetic Topology, Local Time, and Season</p>
A comprehensive compilation of Michaelis-Menten kinetic observations of methanotrophy
<p>This is a compilation of all published measurements of the Michaelis-Menten kinetics of methanotrophy as of 10/2023. Relevant publications were identified using a Google Scholar search with the search terms “soil AND kinetic AND Michaelis-Menten OR Monod OR Vmax AND intitle:methane OR intitle:ch4.” Out of 909 results for these search terms, 67 publications dating from between 1987 and 2023 met the requirements for reporting <em>V</em>max and/or <em>K</em>M values for natural soils and are included here.</p> <p>This compilation supported the findings reported in the 2024 article "Evaluating the contribution of methanotrophy kinetics to uncertainty in the soil methane sink" published in <em>Environmental Research Letters</em>. </p>
Experimental datasets on "Real-time Observation of sub-100-fs Charge and Energy Transfer Processes in DNA Dinucleotides"
<p>Experimental datasets referring to the manuscript entitled "Real-time Observation of sub-100-fs Charge and Energy Transfer Processes in DNA Dinucleotides"</p>
Data from: Too much of a good thing? Supplementing current species observations with fossil data to assess climate change vulnerability via ecological niche models
<p>Ecological niche models (ENMs) are a powerful tool in ecological research and conservation planning. Since ENMs provide probability maps of suitable areas under environmental change, they may assist in designing conservation actions and addressing conservation priorities. However, ENMs are usually implemented by learning the species climatic preferences from their current geographic distribution, which leaves them vulnerable to the issue of niche truncation issues, as if comes with non-climatic limits to the current species distribution posed by e.g. anthropic activities and settlements, and is bound to assume that species are at equilibrium with their environments. These problems might be alleviated by the inclusion of fossil occurrences, which refer to moments during species evolution when such limits were absent, and a larger fraction of the species fundamental niche was probably explored. Here, we combined current and fossil occurrence data for 38 medium-large mammal species of conservation concern to assess the influence of the fossil record on ENM predictions under future climate change scenarios. We found that ignoring or including fossil data yields consistent trends in terms of predicted range increase/decrease. Yet, although adding fossil data invariably results in increased niche width, estimates of range change magnitude improved for just one half only of the species. These results suggest that most species might be in non-equilibrium with their environment, and that the inclusion of fossil data may be crucial to the better understanding of species climatic requirements, hence for designing effective conservation strategies. </p>
Observation of the green hairy field spider Neoscona rufipalpis (Lucas, 1858) in South Africa (Araneae: Araneidae)
<p><em>Neoscona rufipalpis</em> (Lucas, 1858) was one of the Araneidae species sampled during the South African National Survey of Arachnida (SANSA). It is a species with a wide global distribution throughout the Afrotropical Region. Observations on their behaviour, colour variation and distribution are discussed.</p>
Observations on the five-spot round-headed spider Uroctea quinquenotata Simon, 1910, from South Africa.
<p>We present notes of the five-spot round-headed spiders <em>Uroctea quinquenotata</em> Simon, 1910 from South Africa. The general morphology of live specimens is discussed with notes on their behaviour, distribution, and conservation status.</p>
OBSERVATION ON THREE FLOWER CRAB SPIDERS (ARANEAE: THOMISIDAE: THOMISUS) FROM SOUTH AFRICA
<p>The general behaviour of three crab spider species <em>Thomisus citrinellus</em> Simon, 1875, <em>T. daradioides</em> Simon, 1890 and <em>T. stenningi</em> Pocock, 1900 are discussed. They are common flower dwellers found in gardens. With their strong front legs, prey are grabbed, and overpowered by their strong venom enabling them to kill prey that are frequently 2-4 times their size. They prey on seven insect orders and flies were the most commonly caught prey followed by bees. Most of the prey (79%) are caught in the neck region. They can change colour but only 53% of the spider were found on flowers of the same colour.</p>
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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.