Find research datasets worth reusing

opencc-by-4.0Aug 2023View details →

Dragon Proxy Runtimes and Multi-system Workflows

We present a novel method for obtaining proxy access to remote instances of the Dragon distributed runtime. Dragon is a composable distributed runtime for managing dynamic processes, high-performance communication objects, memory and data at scale that is based on an abstraction of a distributed system. Proxy access to a remote instance of the Dragon runtime allows the client Dragon runtime to run any command that could be run directly by the remote Dragon runtime, but executes the command on the remote runtime. Commands to be run on a remote Dragon runtime are mediated by a Python object that acts as a proxy for the remote runtime, which we call a \textit{proxy runtime}. These proxy runtimes, combined with the ability to start and tear down remote Dragon runtimes both programmatically and via the command line interface, make a number of challenging workflows simple to program. Such workflows include edge-to-cloud scientific workflows, batch services and scientific applications based on Python multiprocessing. The ability to program complex workflows on systems that span clusters, scientific instruments and cloud resources is critical to the development of post-exascale applications, infrastuctures and frameworks.

opencc-by-4.0Mar 2018View details →

A global collection of paleoclimate proxy time series over the Common Era

*Dec 2023 Proxy Database Update: This database has been updated based on a more stringent proxy screening procedure. All screening calculations and decisions are documented in the accompanying Julia code Pluto notebook file (see also the HTML file preview of the code). This screening has resulted in the removal of 183 proxy time series from the original file.*Original Data Descriptor:This collection of paleoclimate proxy data currently includes 2591 tree ring chronologies, 197 coral and sclerosponge records, 153 ice core isotope records, 26 speleothem isotope records, 10 lake sediment records, and 1 marine sediment record, for a total of 2,978 records. The proxy records have been collected with a focus on the past 2000 years.This dataset has been collated through collaborative efforts with the Last Millennium Reanalysis project (Hakim et al. 2016) and provides the basis for the reconstructions presented in Steiger et al. (2018). Though the majority of data records are culled from PAGES2k Consortium (2017) and Breitenmoser et al. (2014), some data was taken from the NOAA NCEI's World Data Center for Paleoclimatology archive. Additionally, data was solicited from multiple investigators such as Eric Steig, Stephanie Hayman, Sylke Draschba, Henning Kuhnert, Andy Baker, and others amounting to approximately 60 coral, ice core, speleothem, and lake sediment datasets, though all files in this archive can be freely shared. Datasets were selected whose resolution was at least 25 years, temporal duration was greater than 40 years, and consisted of proxies that had established proxy system models (forward models). The data files are in Matlab format and the variables here include the proxy names ('lmr2k_names'), the proxy data ('lmr2k_data'), the proxy type ('archive'), the proxy measurement ('msrmt'), the proxy latitudes and longitudes ('p_lat' and 'p_lon'), and the years of the proxies ('year'). Seasonally resolved proxies have been averaged from April to the following calendar year March.Updates will be made to this proxy collection as more proxy data become available. Breitenmoser, P., et al. "Forward modelling of tree-ring width and comparison with a global network of tree-ring chronologies." Climate of the Past 10.2 (2014): 437.PAGES2k Consortium. "A global multiproxy database for temperature reconstructions of the common era." Scientific Data 4, 170088 (2017).Hakim, Gregory J., et al. "The last millennium climate reanalysis project: Framework and first results." Journal of Geophysical Research: Atmospheres 121.12 (2016): 6745-6764.Steiger, N. J. et al. "A reconstruction of global hydroclimate and dynamical variables over the Common Era." Scientific Data 5:180086 (2018).

opencc-by-4.0Dec 2023View details →

BARITE AS A PROXY OF PRODUCTIVITY: A STUDY IN THE SOUTHWEST ATLANTIC OCEAN

Database for the manuscript entitled barite as a proxy of productivity: a study in the Southwest Atlantic Ocean

opencc-by-4.0Nov 2024View details →

Hexameric proxies for studying softwood hemicellulose using CHARMM forcefield

CHARMM Topology files of hexameric xylose oligomers decorated with different patterns of 4-O-methyl-glucuronic acid and L-arabinose substitutions as proxy molecules for softwood xylan. Configuration files for the individual molecules as well as slab geometries representing the major cellulose surfaces ((100), (110), (1-10)) are also included. All files in GROMACS format.

opencc-by-4.0Jun 2024View details →

Multi-proxy records from Anshupa Lake, Core Monsoon Zone, India since ~1300 AD.

The dataset contains sedimentological and geochemical proxy records from Anshupa Laka, Odisha, present in the Core Monsoon Zone, India. These represent a 1.36m long sediment core ranging from -1300 AD to recent. The data includes grain size parameters, energy model end members, major oxides and trace elements, and Principal Component Analysis values.

opencc-zeroFeb 2022View details →

Data from: Dynamic body acceleration as a proxy to predict the cost of locomotion in bottlenose dolphins

Estimates of the energetic costs of locomotion (COL) at different activity levels are necessary to answer fundamental eco-physiological questions and to understand the impacts of anthropogenic disturbance to marine mammals. We combined estimates of energetic costs derived from breath-by-breath respirometry with measurements of overall dynamic body acceleration (ODBA) from biologging tags to validate ODBA as a proxy for COL in trained common bottlenose dolphins (Tursiops truncatus). We measured resting metabolic rate (RMR); mean individual RMR was 0.71–1.42 times that of a similarly sized terrestrial mammal and agreed with past measurements that used breath-by-breath and flow-through respirometry. We also measured energy expenditure during submerged swim trials, at primarily moderate exercise levels. We subtracted RMR to obtain COL, and normalized COL by body size to incorporate individual swimming efficiencies. We found both mass-specific energy expenditure and mass-specific COL were linearly related with ODBA. Measurements of activity level and cost of transport (the energy required to move a given distance) improve understanding of the COL in marine mammals. The strength of the correlation between ODBA and COL varied among individuals, but the overall relationship can be used at a broad scale to estimate the energetic costs of disturbance and daily locomotion costs to build energy budgets, and investigate the costs of diving in free-ranging animals where bio-logging data are available. We propose that a similar approach could be applied to other cetacean species.

Last interglacial (MIS 5e) sea level proxies in the glaciated Northern Hemisphere

This dataset contains known preserved last interglacial (Marine Isotope Stage 5e - 130-115 ka) sea level proxies in glaciated regions of North America and Europe, including Greenland and Iceland. We have excluded deposits that show evidence of glaciotectonism. In total there are 88 sea level proxies in this dataset. The sea level proxies have been dated using electron spin resonance, U-series, amino acid racemization, luminescence and radiocarbon techniques. In many cases, fossil assemblages and pollen records that indicate warmer-than-present conditions provide support for a last interglacial assignment.

opencc-zeroMar 2022View details →

Data from: Seed predator effects on plants: moving beyond time-corrected proxies

Small mammals impact plant recruitment globally via size-dependent seed predation, generating a unimodal pattern across ecosystems. Chen et al. (2021) critiqued our seed removal analysis, advocating corrections for exposure time. We show in our rebuttal that such manipulations are unwarranted and argue for increased emphasis on plant recruitment metrics. This archive holds the updated seed removal dataset used for our rebuttal.

opencc-zeroApr 2022View details →

Data for: Andic soil properties and tephra layers hamper C turnover in Icelandic peatlands - selective dissolution of Al, Fe, Si and decomposition proxies

Due to frequent volcanic activity and erosion of dryland soils, peatlands in Iceland receive regular additions of mineral aeolian deposits (tephra and eroded material). Therefore, their soils may develop not only histic, but also andic characteristics. Here we present data sets of a study that elucidates interactions between carbon characteristics and andic soil properties in Histosols of three Icelandic peatlands. The data sets contain information about the soil carbon structure derived by 13C NMR spectroscopy, andic soil properties based on selective dissolution of Al, Fe and Si, decomposition proxies C/N, δ13C and δ15N, information on total carbon and nitrogen content, dry bulk density, soil organic matter content and pH measured in deionised water and NaF solution.

opencc-zeroMay 2022View details →

Data supplement to: Plant proxy evidence for high rainfall and productivity in the eocene of Australia

During the early to middle Eocene, a mid-to-high latitudinal position and enhanced hydrological cycle in Australia would have contributed to a wetter and "greener" Australian continent where today arid to semi-arid climates dominate. Here, we revisit 12 Australian plant megafossil sites from the early to middle Eocene to generate temperature, precipitation and seasonality paleoclimate estimates, as well as net primary productivity (NPP) and vegetation type, based on paleobotanical proxies and compare to early Eocene global climate models. Temperature reconstructions are uniformly subtropical (mean annual, summer, and winter mean temperatures 19–21 °C, 25–27 °C and 14–16 °C, respectively). This indicates that southern Australia was ~5 °C warmer than today, despite a >20° poleward shift from its modern geographic location. Precipitation was less homogeneous than temperature, with mean annual precipitation of ~60 cm over inland sites and >100 cm over coastal sites. Precipitation may have been seasonal with the driest month receiving between 2–7× less precipitation as mean monthly precipitation. Proxy-model comparison is favorable with an 1680 ppm CO2 concentration. However, individual proxy reconstructions can disagree with models as well as with each other. In particular, seasonality reconstructions have systemic offsets. NPP estimates were up to 1000 gC m-2 yr-1 higher than modern, implying a more homogenously "green" Australian continent in the early to middle Eocene and larger carbon fluxes to and from the Australian biosphere. The most similar modern vegetation type is modern-day eastern Australian subtropical forest, although distance from coast and latitude may have led to vegetation heterogeneity.

opencc-by-4.0Aug 2024View details →

Incorporation of trace metals into land snail shells on the Chinese Loess Plateau as proxies for paleo-precipitation

This dataset provides the results of trace metal compositions of modern snail shells (Cathaica sp.) collected from sixteen sites on the Chinese Loess Plateau.

opencc-zeroDec 2009View details →

Data from: Can clone size serve as a proxy for clone age? An exploration using microsatellite divergence in Populus tremuloides

In long-lived clonal plant species, the overall size of a clone has previously been used to estimate clone age. The size of a clone, however, might be largely determined by physical or biotic interactions, obscuring the relationship between clone size and age. Here, we use the accumulation of mutations at 14 microsatellite loci to estimate clone age in trembling aspen, Populus tremuloides, from southwestern Canada. We show that the observed patterns of genetic divergence are consistent with a model of clonal growth, allowing us to use pairwise genetic divergence as an estimator of clone age. In the populations studied, clone size did not exhibit a significant relationship with microsatellite divergence, indicating that clone size is not a good proxy for clone age.

opencc-zeroDec 2016View details →

Data from: Reconstructing Asian faunal introductions to eastern Africa from multi-proxy biomolecular and archaeological datasets

Human-mediated biological exchange has had global social and ecological impacts. In sub-Saharan Africa, several domestic and commensal animals were introduced from Asia in the pre-modern period; however, the timing and nature of these introductions remain contentious. One model supports introduction to the eastern African coast after the mid-first millennium CE, while another posits introduction dating back to 3000 BCE. These distinct scenarios have implications for understanding the emergence of long-distance maritime connectivity, and the ecological and economic impacts of introduced species. Resolution of this longstanding debate requires new efforts, given the lack of well-dated fauna from high-precision excavations, and ambiguous osteomorphological identifications. We analysed faunal remains from 22 eastern African sites spanning a wide geographic and chronological range, and applied biomolecular techniques to confirm identifications of two Asian taxa: domestic chicken (Gallus gallus) and black rat (Rattus rattus). Our approach included ancient DNA (aDNA) analysis aided by BLAST-based bioinformatics, Zooarchaeology by Mass Spectrometry (ZooMS) collagen fingerprinting, and direct AMS (accelerator mass spectrometry) radiocarbon dating. Our results support a late, mid-first millennium CE introduction of these species. We discuss the implications of our findings for models of biological exchange, and emphasize the applicability of our approach to tropical areas with poor bone preservation.

opencc-by-4.0Jun 2021View details →

Building pseudo proxy paleotempestology networks using synthetic North Atlantic tropical cyclones

This release contains the past millennium synthetic storm datasets (MPI-ESM; CESM-LME) and scripts needed to develop pseudo paleohurricane compilations used in Wallace et al. (2021). Version 2 includes updated storm datasets that are re-calibrated to have long term mean frequency that matches the satellite era tropical cyclone frequency. The site properties (resolution, radius) are also updated.

Organic geochemical proxies, foraminieral assemblages and isotopic geochemistry of benthic foraminifera from core NYA17-154

The dataset contains all the data from cor NYA17-154 presented in Tesi et al. 2021 Science Advances Rapid Atlantification along the Fram Strait at the beginning of the 20th century Tesi. Tommaso1*, Francesco  Muschitiello2,3*, Gesine Mollenhauer4, Stefano Miserocchi1, Leonardo Langone1, Chiara Ceccarelli5, Giuliana Panieri6, Jacopo Chiggiato7, Alessio  Nogarotto1,8, Jens Hefter4, Gianmarco Ingrosso1, Federico Giglio1, Patrizia Giordano1, Lucilla Capotondi7 (1) Istituto di Scienze Polari - Consiglio Nazionale delle Ricerche ISP-CNR,  40129 Bologna, Italy (2) Department of Geography - University of Cambridge, Cambridge, CB2 3EN, UK (3) NORCE Norwegian Research Centre, 5007 Bergen, Norway  (4) Alfred Wegener Institute - Helmholtz Center for Polar and Marine Sciences, 27570 Bremerhaven, Germany (5) Dipartimento di Scienze Biologiche, Geologiche ed Ambientali – BiGeA, 40126 Bologna, Italy (6) CAGE ‐ Center of Arctic Gas Hydrate, Environment and Climate, Department of Geolosciences, UiT The Arctic University of Norway, Tromsø, Norway  (7) Istituto di Scienze Marine - Consiglio Nazionale delle Ricerche ISMAR-CNR,  40129 Bologna, Italy (8) Campus Scientifico, Università Ca’ Foscari Venezia, 30172 Venezia Mestre, Italy   The data encompasses: - age-depth model - alkenone derived sea surface temperature - TEX86-L derived water temperature - stable oxygen isotope data of N. labradorica - benthic foraminifera assemblages - retene content

The power of nighttime lights: Exploring their suitability as a proxy for GDP, population, and other socioeconomic activity

Final datasets that were used to arrive at my results in my bachelor's thesis.

opencc-by-4.0Dec 2022View details →

Multi-proxy dentition analyses reveal niche partitioning between sympatric herbivorous dinosaurs

In this link we uploaded the raw data related to the MS entitled "Multi-proxy dentition analyses reveal niche partitioning between sympatric herbivorous dinosaurs" submitted to Scientific Reports. These files are used for 3D modelling (volumetric calculation and OPCR tooth crown complexity), CT imaging and 2D and 3D microwear files.

Data for "Aqueous Gastropod Shells as Groundwater Radiocarbon Proxies"

This document contains the data generated and used in the manuscript titled “EVALUATION OF AQUEOUS GASTROPOD SHELLS AS GROUNDWATER RADIOCARBON PROXIES ACROSS SPECIES AND SITES” with the DOI:10.1017/RDC.2022.103

opencc-by-4.0Apr 2023View details →

Estimating Modal Mineralogy using Raman Spectroscopy: Multivariate Analysis Models and Raman Cross-Section Proxies - Chapter 4 Data

I provide supplementary data for Chapter 4 of my dissertation including electron microprobe analysis data as well as the Raman spectra and associated metadata of the mineral end-members, the mineral-mineral mixtures, and the diamond-mineral mixtures.