45 Works

Observational and modeled dataset for determination of urban emissions of CO2 using an atmospheric inversion technique, Davos, Switzerland, 2011-2012.

N.L. Miles, T. Lauvaux, S.J. Richardson, A. Deng & D. Stauffer
Anthropogenic emissions from urban areas represent 70% of the fossil fuel carbon emitted globally according to carbon emission inventories. The observational and model data archived here were used in the first operational system able to monitor, in near–real time, daily emission estimates, using a mesoscale atmospheric inversion framework over the city of Davos, Switzerland, before, during, and after the World Economic Forum 2012 Meeting (WEF-2012). Two instruments that continuously measured atmospheric mixing ratios of greenhouse...

Ensemble model output of North American atmospheric CO2 simulation (full WRF-chem output)

S. Feng, T. Lauvaux, K.J. Davis, K. Keller, R. Rayner, T. Oda, K. Gurney, Y. Zhou, C. Williams, A.E. Schuh, J. Liu & I. Baker
The uncertainty in biospheric carbon dioxide (CO2) flux estimates drives divergent projections of future climate and uncertainty in prescriptions for climate mitigation. The terrestrial carbon sink can be inferred from atmospheric CO2 observations with transport models via inversion methods. Regional CO2 flux estimates remain uncertain due to the mixture of uncertainties caused by transport models, prior estimates of biospheric fluxes, large-scale CO2 boundary inflow, the assumptions in the inversion process, and the limited density of...

Data from: Spatially-explicit avian frugivory, fruit availability, and seed rain in a latitudinal gradient of the Americas

Tomás Carlo
Network metrics are widely used to infer the roles of mutualistic animals in plant communities and to predict the effect of species' loss. However, their empirical validation is scarce. Here we parameterized a joint species model of frugivory and seed dispersal with bird movement and foraging data from tropical and temperate communities. With this model we investigate the effect of frugivore loss on seed rain, and compare our predictions to those of standard coextinction models...

Temperature and fluid pressurization effects on frictional stability of shale faults reactivated by hydraulic fracturing in the Changning Block, Southwest China

Mengke An, Fengshou Zhang, Zhaowei Chen, Derek Elsworth & Lianyang Zhang
A shale fault reactivated during multi-stage hydraulic fracturing in the Changning block in the Sichuan Basin, southwest China accompanied a cluster of small earthquakes with the largest reaching ML ~0.8. We illuminate the underlying mechanisms of fault reactivation through measurements of frictional properties on simulated fault gouge under hydrothermal conditions. Velocity-stepping experiments were performed at a confining pressure of 60 MPa, temperatures from 30 to 300 ℃, pore fluid pressures from 10 to 55 MPa...

United States National Lynching Data, 1883-1941

Charles Seguin & David Rigby
These data extend existing data on lynching victims to cover the 48 contiguous United States from 1883 to 1941. The data here cover 38 states not included in Tolney and Beck's (1995) original data, as well as 3 additional victims in the 10 states covered by Tolney and Beck. The authors confirmed 1,319 victims from previous data and found 15 additional victims not recorded in any prior data set.

Title Shale Network – Statewide Surface Water (Five Analytes: Cl, Ba, Br, Mg, Na) in Pennsylvania as of February 2018

T. Wen
This data set is a subset of the Shale Network database (https://doi.org/10.4211/his-data-shalenetwork) and has been discussed in the following publication “Agarwal, A., Wen, T., Chen, A., Zhang, A., Niu, X., Zhan, X., Xue, L., Brantley, S., 2019. Using a New Geospatial Tool to Detect Contamination Incidents in Stream Chemistry Networks: A Case Study for Shale Gas Development. XXXXXXXXX”. The Shale Network (http://www.shalenetwork.org/) is a project funded by the National Science Foundation to help scientists and...

Data, analyses, and software for the 12 May 2010 tornadic supercell storm intercepted near Clinton, Oklahoma by VORTEX2

P. Markowski, T.P. Hatlee & Y.P. Richardson
This dataset contains the raw, edited, and gridded mobile radar data (DOW6, DOW7, NOXP) and dual-Doppler wind syntheses that were the subject of the Markowski et al. (2018) study. That study analyzed the Clinton, Oklahoma, tornadic supercell storm intercepted by the Second Verification of the Origins of Rotation in Tornadoes Experiment (VORTEX2). The dataset also includes mobile mesonet data and the analysis software used for the study (mostly FORTRAN and MATLAB code). Additional documentation is...

Nonlinear Impacts of Surface Exchange Coefficient Uncertainty on Tropical Cyclone Intensity and Air-Sea Interactions

R.G. Nystrom, X. Chen, F. Zhang & C.A. Davis
Tropical cyclone maximum intensity is believed to result from a balance between the surface friction, which removes energy, and a temperature/moisture (enthalpy) difference between the sea surface and the air above it, which adds energy. The competing processes near the air-sea interface are controlled by both the near surface wind speed and the surface momentum (Cd) and enthalpy flux (Ck) coefficients. Unfortunately, these coefficients are currently highly uncertain at high wind speeds. Tropical cyclone winds...

Effects of BCG vaccination against Bovine Tuberculosis: a systematic review and meta-analysis Date

V. Srikrishnan, A. Conlan, L. Easterling, C. Herrara, P. Dandapat, M. Veerasami, G. Ameni, D. Bakker, M. Vordermeier & V. Kapur
Despite the effective control of Bovine Tuberculosis (bTB) in many countries using test-and-slaughter, more than 50 million cattle are still likely to be infected worldwide, highlighting the urgent need for alternative interventions such as vaccines to reduce disease burden and control spread of bTB. Vaccination may be particularly important in regions where the disease is endemic, and test-and-slaughter is neither practical nor acceptable socio-economically. Bacillus Calmette-Guérin (BCG) has been in experimental use in cattle for...

Is Tillage Beneficial or Detrimental for Invertebrate Pest Management? A Meta-Analysis Supplementary data

E. Rowen, K.H. Regan, M.E. Barbercheck & J.F. Tooker
Frequent and intensive tillage can have negative effects on soil, including increasing risk of erosion, oxidizing organic matter, and disrupting life cycles of soil organisms. Even though tillage can negatively influence soil, this practice is still used across much of the world to prepare fields for planting and to manage pests. Farmers who have adopted reduced-tillage systems can struggle with a suite of invertebrate pests; however, reducing the frequency and intensity of tillage may improve...

Data from: Spatial synchrony in sub-arctic geometrid moth outbreaks reflects dispersal in larval and adult lifecycle stages

Ole Petter L. Vindstad, Jane U. Jepsen, Nigel G. Yoccoz, Ottar N. Bjornstad, Michel D.S. Mesquita & Rolf A. Ims
1. Spatial synchrony in population dynamics can be caused by dispersal or spatially correlated variation in environmental factors like weather (Moran effect). Distinguishing between these mechanisms is challenging for natural populations, and the study of dispersal-induced synchrony in particular has been dominated by theoretical modelling and laboratory experiments. 2. The goal of the present study was to evaluate the evidence for dispersal as a cause of meso-scale (distances of tens of kilometers) spatial synchrony in...

Data from: Chemical cues linked to risk: cues from belowground natural enemies enhance plant defences and influence herbivore behaviour and performance

Anjel M. Helms, Swayamjit Ray, Nina L. Matulis, Margaret C. Kuzemchak, William Grisales, John F. Tooker & Jared G. Ali
1. Chemical cues are essential for many ecological interactions. Previous studies of chemically mediated multitrophic interactions have typically focused on responses to cues from plants or herbivores aboveground. It is increasingly clear, however, that belowground cues and those produced by organisms at higher trophic levels also have ecological importance. Prey animals often avoid predator odours to improve survival, and previous research documented enhanced plant resistance following contact with belowground natural enemies, though the ecological basis...

Data from: Better safe than sorry: spider societies mitigate risk by prioritizing caution

Colin M. Wright, James L.L. Lichtenstein, Lauren P. Luscuskie, Graham A. Montgomery, Noa Pinter-Wollman & Jonathan N. Pruitt
Group members often vary in the information that they have about their environment. In this study, we evaluated the relative contribution of information held by the population majority vs. new immigrants to groups in determining group function. To do so we created experimental groups of the social spider Stegodyphus dumicola that were either iteratively exposed to a dangerous predator, the ant Anoplopepis custodiens, or kept in safety. We then seeded these groups (i.e., the population...

Data from: Earth history and the passerine superradiation

Carl H. Oliveros, Daniel J. Field, Daniel T. Ksepka, F. Keith Barker, Alexandre Aleixo, Michael J. Andersen, Per Alström, Brett W. Benz, Edward L. Braun, Michael J. Braun, Gustavo A. Bravo, Robb T. Brumfield, R. Terry Chesser, Santiago Claramunt, Joel Cracraft, Andrés M. Cuervo, Elizabeth P. Derryberry, Travis C. Glenn, Michael G. Harvey, Peter A. Hosner, Leo Joseph, Rebecca T. Kimball, Andrew L. Mack, Colin M. Miskelly, A. Townsend Peterson … & Brant C. Faircloth
Avian diversification has been influenced by global climate change, plate tectonic movements, and mass extinction events. However, the impact of these factors on the diversification of the hyperdiverse perching birds (passerines) is unclear because family level relationships are unresolved and the timing of splitting events among lineages is uncertain. We analyzed DNA data from 4,060 nuclear loci and 137 passerine families using concatenation and coalescent approaches to infer a comprehensive phylogenetic hypothesis that clarifies relationships...

Shale anisotropy and natural hydraulic fracture propagation: An example from the Posidonienschiefer, Germany

J.N. Hooker, M. Ruhl, A.J. Dickson, L.N. Hanson, E. Idiz, S.P. Hesselbo & J. Cartwright
Cores recovered from the Posidonienschiefer (Posidonia Shale) in the Lower Saxony Basin, Germany, contain calcite filled fractures (veins) at low angle to bedding. The veins preferentially form where the shale is both organic rich and thermally mature, supporting previous interpretations that the veins formed as hydraulic fractures in response to volumetric expansion of organic material during catagenesis. Despite the presence of hydrocarbons during fracturing, the calcite fill is fibrous and so the veins appear to...

Electrodynamic Levitation Diffusion Chamber Measurements of the Mass Growth of Homogeneously-Nucleated Ice Crystals Grown from the Vapor

G. Pokrifka, A. Moyle & J.Y. Harrington
This data set comprises individual time-series for ice crystals grown in an electrodynamic levitation diffusion chamber at temperatures between -36C and -44C. Descriptions of the chamber and experiments can be found in Pokrifka (2018). Experiments were conducted by freezing small (approximately 10 micrometer radius) droplets homogeneously. Frozen droplets were levitated in the diffusion chamber and grown in a constant temperature, pressure, and supersaturation environment. The voltage ratio needed to levitate the particle was recorded as...

Model output for determining sector-based CO2 emissions in both pseudodata and real-data inversion analyses of Indianapolis for January-April 2015.

B. Nathan, T. Lauvaux, J. Turnbull & K. Gurney
t We assimilate multiple trace gas species within a single high-resolution Bayesian inversion system to optimize CO2ff emissions for individual source sectors. Starting with carbon monoxide (CO), an atmospheric trace gas with fairly well-known emissions, we use emission factors of CO and CO2ff (called RCO) defined for each source sector to enable us to jointly use CO and CO2 atmospheric mole fractions to constrain CO2ff sectoral emissions. We first show that our combined CO-CO2 inversion...

The hornwort genome and early land plant evolution

Jian Zhang, Xin-Xing Fu, Rui-Qi Li, Xiang Zhao, Yang Liu, Ming-He Li, Arthur Zwaenepoel, Hong Ma, Bernard Goffinet, Yan-Long Guan, Jia-Yu Xue, Yi-Ying Liao, Qing-Feng Wang, Qing-Hua Wang, Jie-Yu Wang, Guo-Qiang Zhang, Zhi-Wen Wang, Yu Jia, Mei-Zhi Wang, Shan-Shan Dong, Jian-Fen Yang, Yuan-Nian Jiao, Ya-Long Guo, Hong-Zhi Kong, An-Ming Lu … & Zhi-Duan Chen
Hornworts, liverworts, and mosses are three early diverging clades of land plants, together composing the bryophytes. Here we report the draft genome sequence of the hornwort Anthoceros angustus. Phylogenomic inferences confirm the monophyly of bryophytes, with hornworts sister to liverworts and mosses. The simple morphology of hornworts correlates with low genetic redundancy in plant body plan while the basic transcriptional regulation toolkit for plant development has already been established in this early land plant lineage....

Simple Simulation Model for Exploring the Effects of Solvent and Structure on Asphaltene Aggregation

N. J. H. Dunn, B. Gutama & W.G. Noid
Asphaltenes are operationally defined as the fraction of crude oil that is soluble in toluene but insoluble in n-heptane. According to the Yen–Mullins model, typical asphaltenes are relatively small molecules consisting of a single aromatic core flanked by aliphatic chains. The Yen–Mullins model posits that asphaltene aggregation proceeds via a hierarchical mechanism involving small nanoaggregates with stacked aromatic cores surrounded by a corona of aliphatic tails. In this work, we introduce a coarse-grained (CG) model...

ISR - Phil Erickson, MIT/Haystack Observatory. (2013)

L.R. Dinsmore
The period of Incoherent Scatter Radar (ISR) observation extended between 12:42 UT May 6th and 19:47 UT May 8th, 2013. The Millstone Hill (MH) ISR system contains two radar dishes with one (the Zenith beam) having fixed pointing at an 88° beam elevation, and the other pointed parallel-B (MISA: the MH Steerable Antenna), with an azimuth angle of 165.8° and an elevation angle of 66.26°, at an altitude of 250 kilometers based on the IGRF...

Registration Year

  • 2019

Resource Types

  • Dataset


  • Pennsylvania State University
  • The University of Texas at Austin
  • University of Michigan–Ann Arbor
  • University of Georgia
  • Goddard Space Flight Center
  • University of Minnesota
  • Texas A&M University
  • University of California, Santa Barbara
  • University of Florida
  • University of Arizona