J. R. Lyons
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View article: Estimates of Isotope Ratios in the Magnetosphere and Implications for Implantation of Atmosphere in Lunar Regolith
Estimates of Isotope Ratios in the Magnetosphere and Implications for Implantation of Atmosphere in Lunar Regolith Open
The plasma in Earth’s magnetosphere is comprised of ions from the solar wind and from Earth’s polar wind, with the orientation of the interplanetary magnetic field (IMF) acting to modulate the relative contributions from these two sources.…
View article: PROTOCOL: Bereavement Interventions for Children and Adolescents: An Evidence and Gap Map of Primary Studies and Systematic Reviews
PROTOCOL: Bereavement Interventions for Children and Adolescents: An Evidence and Gap Map of Primary Studies and Systematic Reviews Open
This is the protocol for a Campbell evidence and gap map. The objectives are as follows: (1) To identify and map all existing primary studies and systematic reviews (published and unpublished) on bereavement interventions/programmes for ch…
View article: Biological, Equilibrium and Photochemical Signatures of C, N and S Isotopes in the Early Earth and Exoplanet Atmospheres
Biological, Equilibrium and Photochemical Signatures of C, N and S Isotopes in the Early Earth and Exoplanet Atmospheres Open
The unambiguous detection of biosignatures in exoplanet atmospheres is a primary objective for astrobiologists and exoplanet astronomers. The primary methodology is the observation of combinations of gases considered unlikely to coexist in…
View article: Oxygen Isotope Fractionation Due to Non-Thermal Escape of Hot O from the Atmosphere of Mars
Oxygen Isotope Fractionation Due to Non-Thermal Escape of Hot O from the Atmosphere of Mars Open
Secondary minerals in SNC meteorites from Mars exhibit O isotope ratios believed to be consistent with the non-thermal escape of O from the atmosphere. The primary source of the non-thermal O is the dissociative- recombination of O2+ in th…
View article: A molecular cloud origin for the <sup>15</sup>N enrichment of planetary materials
A molecular cloud origin for the <sup>15</sup>N enrichment of planetary materials Open
The 15 N depletion of the solar wind (Marty et al. 2011) and the massive enrichment of N-containing hotspots (Busemann et al. 2006) span a range in d 15 N of -400 to +5000 ‰ relative to Earth atmosphere.But what processes are principally r…
View article: Potential Heating Energy and Cost Savings of Dual Fuel Heat Pump Controls as a Residential Building Equipment Retrofit in the U.S
Potential Heating Energy and Cost Savings of Dual Fuel Heat Pump Controls as a Residential Building Equipment Retrofit in the U.S Open
This study investigated the energy and cost savings potential by modeling a dual fuel heat pump system with its control for a residential building in (5A) cold climate in U.S. The simulation analysis showed that the application of the DFHP…
View article: Potential Heating Energy and Cost Savings of Dual Fuel Heat Pump Controls as a Residential Building Equipment Retrofit in the U.S
Potential Heating Energy and Cost Savings of Dual Fuel Heat Pump Controls as a Residential Building Equipment Retrofit in the U.S Open
This study investigated the energy and cost savings potential by modeling a dual fuel heat pump system with its control for a residential building in (5A) cold climate in U.S. The simulation analysis showed that the application of the DFHP…
View article: A Scoping Review of the Health Impact of the COVID-19 Pandemic on Persons Experiencing Homelessness in North America and Europe
A Scoping Review of the Health Impact of the COVID-19 Pandemic on Persons Experiencing Homelessness in North America and Europe Open
Persons experiencing homelessness (PEH) are at heightened risk for infection, morbidity, and mortality from COVID-19. However, health consequences of the pandemic extend far beyond those directly caused by the virus. This scoping review ai…
View article: A Comparative Study of Atmospheric Chemistry with VULCAN
A Comparative Study of Atmospheric Chemistry with VULCAN Open
We present an update of the open-source photochemical kinetics code VULCAN to include C–H–N–O–S networks and photochemistry. The additional new features are advection transport, condensation, various boundary conditions, and temperature-de…
View article: Ultraviolet photoabsorption in the B³Σ⁻—X³Σ⁻ and C³Π—X³Σ⁻ band systems of SO sulphur isotopologues
Ultraviolet photoabsorption in the B³Σ⁻—X³Σ⁻ and C³Π—X³Σ⁻ band systems of SO sulphur isotopologues Open
Supplementary data for: A. N. Heays, G. Stark, J. R. Lyons, N. de Oliveira, B. R. Lewis & S. T. Gibson (2022) Ultraviolet photoabsorption in the B3Σ- − X3Σ- and C3Π − X3Σ- band systems of SO sulphur isotopologues, Molecular Physics, DOI: 1…
View article: Ultraviolet photoabsorption in the B³Σ⁻—X³Σ⁻ and C³Π—X³Σ⁻ band systems of SO sulphur isotopologues
Ultraviolet photoabsorption in the B³Σ⁻—X³Σ⁻ and C³Π—X³Σ⁻ band systems of SO sulphur isotopologues Open
Supplementary data for: A. N. Heays, G. Stark, J. R. Lyons, N. de Oliveira, B. R. Lewis & S. T. Gibson (2022) Ultraviolet photoabsorption in the B3Σ- − X3Σ- and C3Π − X3Σ- band systems of SO sulphur isotopologues, Molecular Physics, DOI: 1…
View article: Ultraviolet photoabsorption in the B³Σ⁻—X³Σ⁻ and C³Π—X³Σ⁻ band systems of SO sulphur isotopologues
Ultraviolet photoabsorption in the B³Σ⁻—X³Σ⁻ and C³Π—X³Σ⁻ band systems of SO sulphur isotopologues Open
Data associated with "Ultraviolet photoabsorption in the B³Σ⁻—X³Σ⁻ and C³Π—X³Σ⁻ band systems of SO sulphur isotopologues" experimental_spectrum_*: Raw experimental spectrum. experimental_vibrational_levels: A list of fitted band-by-band or…
View article: The triple isotopes of oxygen in planetary upper atmospheres
The triple isotopes of oxygen in planetary upper atmospheres Open
Introduction:The triple isotopes of O have been well studied in Earth's atmosphere below ~60 km.Mass-independent O 3 formation [1] creates 17 O enrichment that is passed to other atmospheric species [2] including stratospheric CO 2 [3], an…
View article: Oxygen isotopic heterogeneity in the early Solar System inherited from the protosolar molecular cloud
Oxygen isotopic heterogeneity in the early Solar System inherited from the protosolar molecular cloud Open
Heritage of oxygen isotopic heterogeneity of CO, H 2 O, and silicates in the early Solar System from the protosolar molecular cloud.
View article: jameslyons/python_speech_features: release v0.6.1
jameslyons/python_speech_features: release v0.6.1 Open
This library provides common speech features for ASR including MFCCs and filterbank energies.
View article: Gas-phase UV cross sections of radicals
Gas-phase UV cross sections of radicals Open
We present some new studies of the absolute photodissociation cross sections of astrophysically-relevant diatomic radicals.
View article: Fourier-transform-spectroscopic photoabsorption cross sections and oscillator strengths for the S2 BΣu−3−XΣg−3 system
Fourier-transform-spectroscopic photoabsorption cross sections and oscillator strengths for the S2 BΣu−3−XΣg−3 system Open
Photoabsorption cross sections and oscillator strengths for the strong, predissociating vibrational bands, v ≥ 11, in the S2 BΣu−3−XΣg−3(v,0) system are reported. Absorption measurements were undertaken on S2 vapor produced by a radio-freq…
View article: H2 BROADENING IN THE ν3 AND ν4 BANDS OF CH4 AT ROOM TEMPERATURE
H2 BROADENING IN THE ν3 AND ν4 BANDS OF CH4 AT ROOM TEMPERATURE Open
Weakly bound complexes containing aromatic species have been the subject of study for many years. Here, a study of the 1:1 complexes of furan (\\ce{C4H4O}) with water will be presented. In this work, matrix isolation FTIR and computational…
View article: COMPLETE PHOTOABSORPTION LINELIST FOR CO AND ITS ISOTOPOLOGUESBETWEEN 101 AND 115 NM
COMPLETE PHOTOABSORPTION LINELIST FOR CO AND ITS ISOTOPOLOGUESBETWEEN 101 AND 115 NM Open
We present high-resolution rotational spectroscopy of two out of three conformers of 2-cyanobutane. Spectra were taken between 10-26 GHz by means of chirped-pulse spectroscopy. Spectra between 36 and 402 GHz were\n\nrecorded by means of fr…
View article: A light carbon isotope composition for the Sun
A light carbon isotope composition for the Sun Open
Measurements by the Genesis mission have shown that solar wind oxygen is depleted in the rare isotopes, 17 O and 18 O, by approximately 80 and 100‰, respectively, relative to Earth’s oceans, with inferred photospheric values of about −60‰ …
View article: Atlas of new and revised high-resolution spectroscopy of six CO isotopologues in the 101–115 nm range
Atlas of new and revised high-resolution spectroscopy of six CO isotopologues in the 101–115 nm range Open
Our knowledge of astronomical environments containing CO depends on accurate molecular data to reproduce and interpret observed spectra. The recent and future improvements of ultraviolet space instrumentation, both in sensitivity and resol…
View article: VULCAN: An Open-source, Validated Chemical Kinetics Python Code for Exoplanetary Atmospheres
VULCAN: An Open-source, Validated Chemical Kinetics Python Code for Exoplanetary Atmospheres Open
We present an open-source and validated chemical kinetics code for studying hot exoplanetary atmospheres, which we name VULCAN . It is constructed for gaseous chemistry from 500 to 2500 K, using a reduced C–H–O chemical network with about …
View article: High-resolution study of oscillator strengths and predissociation rates for <sup>13</sup><b>C</b><sup>18</sup><b>O </b>
High-resolution study of oscillator strengths and predissociation rates for <sup>13</sup><b>C</b><sup>18</sup><b>O </b> Open
We carried out experiments at the SOLEIL synchrotron facility to acquire data for modelling CO photochemistry in the vacuum ultraviolet. We report oscillator strengths and predissociation rates for four vibrational bands associated with tr…