44 Works

Idealized tornado simulations for Wang et al. (2021) turbulence memory study.

A. Wang, Y. Pan & P. Markowski
This dataset contains the numerical simulations used in the Wang et al. (2021) study of turbulence memory in idealized tornadoes. Surface friction contributes to tornado formation and maintenance by enhancing the convergence of angular momentum. The traditional lower boundary condition in atmospheric models typically assumes an instant equilibrium between the unresolved stress and the resolved shear. This assumption ignores the physics that turbulent motions are generated and dissipated at finite rates—in effect, turbulence has a...

Position-Specific Isotope Fractionation in Amino Acids Sorbed to Ice: Implications for the Preservation of Isotopologue Biosignatures

A.C. Fox, E. Martineau, G.S. Remaud & K. Freeman
Sorption to mineral surfaces is a key process that protects amino acids from oxidation and aids their polymerization into complex biomolecules. Sorption of neutral amino acids is driven by a combination of intermolecular forces, commonly through hydrogen bonds with surface functional groups. Substitutions of heavy isotopes are known to influence the strength of intermolecular interactions, but global (i.e., whole-molecule) C isotope fractionation associated with sorption is small (< 1 ‰). However, larger fractionation of C...

Tracking Mesoscale Convective Systems that are potential candidates to tropical cyclogenesis

K.M. Núñez Ocasio, J.L. Evans & G.S. Young
This study introduces the development of the Tracking Algorithm for Mesoscale Convective Systems (TAMS), an algorithm that allows for the identifying, tracking, classifying, and assigning of rainfall to mesoscale convective systems (MCSs). TAMS combines area-overlapping and projected-cloud-edge tracking techniques to maximize the probability of detecting the progression of a convective system through time, accounting for splits and mergers. The combination of projection on area overlapping is equivalent to setting the background flow in which MCSs...

The role of cloud–infrared radiation feedback in tropical cyclone development

J.H. Ruppert, A.A. Wing, X. Tang & E.L. Duran
This archive contains the data and code used by Ruppert et al. (2020) in their journal publication (DOI placeholder; "The role of cloud–infrared radiation feedback in tropical cyclone development"). It contains 1) the WRF model code and namelist files required to run the pre-processing and simulations of Typhoon Haiyan and Hurricane Maria, and 2) the forcing and circulation output from Sawyer–Eliassen equation computations. Gridded output files are in NetCDF format. Additional datasets required to conduct...

Full WRF-Chem output in support of the NASA Atmospheric Carbon and Transport (ACT)-America project (7/1/2016 – 7/31/2019)

S. Feng, T. Lauvaux, Z.R. Barkley, K.J. Davis, M.P. Butler, A. Deng, B. Gaudet & D. Stauffer
The NASA Atmospheric Carbon and Transport (ACT) – America project conducted five airborne campaigns across three regions in the eastern United States to study the transport and fluxes of atmospheric carbon dioxide (CO2) and methane (CH4). Each six-week campaign measured how weather systems transport these greenhouse gases. The objective of the study is to enable more accurate and precise estimates of the sources and sinks of these gases. Better estimates of greenhouse gas sources and...

Nesting regional WRF-GHG model output from North American domain (27-km) to south gulf region (9-km) for 2015

S. Feng, T. Lauvaux, A. Deng, M.P. Butler & K.J. Davis
This model output provides meteorological states and atmospheric carbon dioxide (CO2) concentrations at hourly interval for the year of 2015. The model is a nesting setup with the outer domain covering the entire North America at 27-km resolution and inner domain covering the south Golf region at 9-km resolution. It was generated to support Gulf Continent's intensive regional study investigating the carbon balance of North America as a whole with special emphasis, including new terrestrial...

Data from Lateral Growth of Ice Crystals Facets during Vapor Depositional Growth

J.Y. Harrington & G. Pokrifka
This data set comprises individual time-series for ice crystals grown by vapor diffusion in laboratory growth chambers along with output from models of lateral growth. Theories for the growth of crystals from the vapor phase generally focus on the normal growth of facets, namely that facets grow outward in the normal direction to the propagation of steps on their surface. Theories of normal growth are well developed and are used to understand the development of...

Simulation Data of Early-Warning of Binary Neutron Star Systems

Sk, J. Rana & C. Hanna
Binary neutron stars will spend ~ 10-15 minutes in the sensitivity band of Advanced LIGO and Virgo detectors as they achieve their design sensitivity. Time-domain filtering of gravitational-wave data could, in principle, accumulate enough signal-to-noise ratio to identify an imminent event tens of seconds before the companions collide and merge. Early warning alerts can be produced for sources that are close enough so that the accumulated signal-to-noise ratio from the time the signal enters the...

An efficient bi-Gaussian ensemble Kalman filter for satellite infrared radiance data assimilation

M. Chan, J.L. Anderson & X. Chen
The introduction of infrared water vapor channel radiance ensemble data assimilation (DA) has improved numerical weather forecasting at operational centers. Further improvements might be possible through extending ensemble data assimilation methods to better assimilate infrared satellite radiances. Here, we will illustrate that ensemble statistics under clear-sky conditions are different from cloudy conditions. This difference suggests that extending the ensemble Kalman filter (EnKF) to handle bi-Gaussian prior distributions may yield better results than the standard EnKF....

Numerical Simulation Output for Markowski (2020) Study of Supercell Intrinsic Predictability

Paul Markowski
This dataset contains the numerical simulation output created and analyzed by Markowski (2020) in his study of supercell intrinsic predictability. A 25-member ensemble of relatively high-resolution (75-m horizontal grid spacing) numerical simulations of tornadic supercell storms was used to obtain insight on their intrinsic predictability. Small random temperature perturbations present in the initial conditions trigger turbulence within the boundary layers. The turbulent boundary layers are given 12 h to evolve to a quasi-steady state before...

A wave-relative framework analysis of AEW-MCS interactions leading to tropical cyclogenesis

K.M. Núñez Ocasio, J.L. Evans & G.S. Young
An African easterly wave and associated MCSs dataset has been created and used to evaluate the propagation of MCSs, AEWs, and especially, the propagation of MCSs relative to the AEW they are associated with (i.e., wave-relative framework). The thermodynamic characteristics of AEW-MCS systems are also analyzed. The analysis is done for both AEW-MCS systems that develop into at least a tropical depression and those that do not to quantify significant differences between waves that undergo...

Bedforms of Thwaites Glacier, West Antarctica: Character and Origin

R.B. Alley, N. Holschuh, D.R. MacAyea, B.R. Parizek, L. Zoet, K. Riverman, A. Muto, K. Christianson, E. Clyne, S. Anandakrishnan & N.T. Stevens
Bedforms of Thwaites Glacier, West Antarctica both record and affect ice flow. Thwaites Glacier flows across the tectonic fabric of the West Antarctic rift system with its bedrock highs and sedimentary basins. Swath radar and seismic surveys of the glacier bed have revealed soft-sediment flutes 100 m or more high extending 15 km or more across basins downglacier from bedrock highs, and ending at prominent hard-bedded moats on stoss sides of the next topographic highs....

Favorable monsoon environment over eastern Africa for subsequent tropical cyclogenesis of African easterly waves

K.M. Núñez Ocasio, A. Brammer, J.L. Evans, G.S. Young & Z.L. Moon

Meteorological fields over Indianapolis, IN from the Weather Research and Forecasting model (WRF v3.5.1)

A. Deng, T. Lauvaux, N.L. Miles & K.J. Davis
The data set contains hourly meteorological variables over Indianapolis, IN and its surroundings (nine counties around the metropolitan area) at 1-km horizontal resolution and 60 vertical levels (up to 50hPa), as simulated by the Weather Research and Forecasting model (WRF v3.5.1) using Four-Dimensional Data Assimilation (FDDA - observation nudging) of measurement stations from the World Meteorological Organization. Additional technical information about the model configuration have been documented in Deng et al. (2017). In short, the...

Impacts of the Opioid Epidemic

Sterner Glenn
This is a place and name redacted dataset of 60 qualitative interviews of those who have been affected by the opioid crisis. Individuals fit into one of four categories: (1) individuals in recovery from an opioid use disorder; (2) individuals who have lost a loved one due to an opioid overdose; (3) individuals who have supported a loved one through their opioid use; and (4) individuals who are pain management patients who have faced obstacles...

Modeled dataset for the estimation of atmospheric transport errors using a Multi-Physics and Analysis Ensemble on the Midwest US

L.I. Diaz-Isaac, T. Lauvaux & K.J. Davis
Atmospheric inversions are used to assess biosphere-atmosphere CO2 surface exchanges. However, large uncertainties exist among inverse flux estimates independent of the spatial scales. Atmospheric transport model errors are one of the main contributors to the uncertainty affecting CO2 inverse flux estimates but have not been quantified thoroughly. The model dataset archived here were used to evaluate atmospheric transport errors over the US upper Midwest with an ensemble of simulations created with the Weather Research and...

One-way nested (27km, 9km and 3km) model output of North American atmospheric CO2 simulation (full WRF-chem output)

A. Samaddar, S. Feng, T. Lauvaux, Z.R. Barkley, S. Pal & K.J. Davis
Synoptic weather systems are a major driver of spatial gradients in atmospheric CO2 mole fractions. During frontal passages air masses from different regions meet at the frontal boundary creating significant gradients in CO2 mole fractions. This study quantitatively describes the atmospheric transport of CO2 mole fractions during a mid-latitude cold front passage and explores the impact of various sources of CO2. We focus here on a cold front passage over Lincoln, Nebraska on August 4th,...

Implications of electron detachment in associative collisions of atomic oxygen anion with molecular nitrogen for modeling of transient luminous events

R. Janalizadeh & V.P. Pasko
Electron detachment from negative ion of atomic oxygen, O-, is important for understanding of lightning-induced upper atmospheric discharges. Contrary to previous studies, Rayment and Moruzzi [1978] argue that the associative detachment reaction of O- with molecular nitrogen, N2, proceeds with N2 in its ground state, and calculate the reaction rate coefficient as a function of the reduced electric field. In this work we analyze the experimental setup in [Rayment and Moruzzi, 1978] and demonstrate that...

Compact Spherical Loudspeaker Array Instrument Directivity Database

M.C. Vigeant & M. Neal
This data set contains full three-dimensional turntable measurements of a compact spherical loudspeaker array used to reconstruct the frequency-dependent radiation patterns of musical instruments. Included in this data set are array radiation control filters, driver equalization filters, measured turntable data, and simulations of the compact spherical loudspeaker array's performance using both a spherical-cap and a point-source model. For more information on the details of this data set, please refer to the paper: M. Neal, "A...

Dataset of Constraining fossil fuel CO2 emissions from urban area using OCO-2 observations of total column CO2

X. Ye, T. Lauvaux, E.A. Kort, T. Oda, S. Feng, J.C. Lin, E.G. Yang & D. Wu
Satellite observations of the total column dry-air CO2 (XCO2) are expected to support the quantification and monitoring of fossil fuel CO2 (ffCO2) emissions from urban areas. We evaluate the utility of the Orbiting Carbon Observatory 2 (OCO-2) XCO2 retrievals to optimize whole-city emissions, using a Bayesian inversion system and high-resolution transport modeling. The uncertainties of constrained emissions related to transport model, satellite measurements, and local biospheric fluxes are quantified. For the first two uncertainty sources,...

Output and Data from Semi-Analytic Functions to Calculate the Deposition Coefficients for Ice Crystal Vapor Growth in Bin and Bulk Microphysical Models.

Harrington J., G. Sokolowski & H. Morrison
This data set comprises fitting coefficients needed to calculate supersaturation-dependent deposition coefficients, along with output from model simulations. The coefficients are used in semi-analytic functions that allows fast and accurate calculations of the surface supersaturations needed for the deposition coefficients. Output are provided for test simulations that reveal the accuracy of the approximate calculations for individual crystals. Model output are also provided from test simulations using Eulerian bin and bulk cloud microphysical schemes.

Simulations and Analysis Code for the Automated Issuance of Tornado Warnings in Simulated Convective Storms

D. Steinkruger, P. Markowski & G.S. Young
These data and Python scripts were used to develop an artificially intelligent system capable of issuing tornado warnings in simulated convective storms. Contained in the dataset are 128 CM1 simulations for which the output of the simulations have been saved in netCDF format. Additionally, the Python code used to visualize the simulations, extract data from the simulations, train machine learning models, and set the AI system warning thresholds is included.

Data and analysis code for the 26 May 2010 supercell intercepted by VORTEX2 near Prospect Valley, Colorado

S. Murdzek , P. Markowski, Y.P. Richardson & R. Tanamachi
These data and computer codes contained in this zip file were used in an analysis of a supercell on 26 May 2010 near Prospect Valley, Colorado, that was intercepted by the Second Verification of the Origins of Rotation in Tornadoes Experiment (VORTEX2). The results from this analysis are discussed in the following journal article: Murdzek, S. S., P. M. Markowski, Y. P. Richardson, R.L. Tanamachi, 2020: Processes preventing the development of a significant tornado in...

Coral accurately bridges paired-end reads alignment

Q. Shi & M. Shao
Motivation: The established high-throughput RNA-seq technologies usually produce paired-end reads. A challenging problem is therefore to computationally infer the alignment of entire fragments given the alignment of the two mate ends. Solving this problem essentially provide longer RNA-seq reads, and hence benefits downstream RNA-seq analysis. Results: We introduce Coral, a new tool that can accurately bridge paired-end RNA-seq reads. The core of Coral is a novel optimization formulation that can capture the most reliable bridging...

Registration Year

  • 2020

Resource Types

  • Dataset


  • Pennsylvania State University
  • Goddard Space Flight Center
  • Colorado State University
  • University of Washington
  • University of Michigan–Ann Arbor
  • Temple University
  • Oregon University System
  • University of Cambridge
  • British Antarctic Survey
  • Nanjing University