Javier A. Barrera

ORCID: 0000-0003-3722-9282
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About
Contact & Profiles
Research Areas
  • Atmospheric chemistry and aerosols
  • Atmospheric Ozone and Climate
  • Atmospheric and Environmental Gas Dynamics
  • Air Quality and Health Impacts
  • Air Quality Monitoring and Forecasting
  • Spectroscopy and Laser Applications
  • Business, Education, Mathematics Research
  • Advanced Control Systems Optimization
  • Knee injuries and reconstruction techniques
  • Statistics Education and Methodologies
  • Energy Efficiency and Management
  • Energy, Environment, and Transportation Policies
  • Metal and Thin Film Mechanics
  • Violence, Education, and Gender Studies
  • Education in Rural Contexts
  • Distributed systems and fault tolerance
  • Advanced Data Storage Technologies
  • Numerical methods for differential equations
  • Accounting and Financial Management
  • Atmospheric aerosols and clouds
  • Parallel Computing and Optimization Techniques
  • Catalytic Processes in Materials Science
  • Total Knee Arthroplasty Outcomes

Universidad Nacional de Córdoba
2013-2025

Centro Científico Tecnológico - Córdoba
2023-2025

Instituto de Química Física Blas Cabrera
2023

Universitat Politècnica de Catalunya
2022

Barcelona Supercomputing Center
2022

Instituto Interdisciplinario de Ciencias Básicas
2020-2021

Consejo Nacional de Investigaciones Científicas y Técnicas
2017-2021

Universidad Nacional de Cuyo
2020-2021

Universidad del Desarrollo
2021

Clínica Alemana
2021

Abstract Current chemistry climate models do not include polar emissions and of halogens. This work presents the first implementation an interactive module into very short‐lived (VSL) halogen version Community Atmosphere Model with Chemistry (CAM‐Chem) model. The includes photochemical release molecular bromine, chlorine, interhalogens from sea‐ice surface, brine diffusion iodine biologically produced underneath within porous sea‐ice. It also heterogeneous recycling inorganic reservoirs...

10.1029/2019ms001655 article EN cc-by-nc-nd Journal of Advances in Modeling Earth Systems 2019-06-09

Abstract Many Chemistry‐Climate Models (CCMs) include a simplified treatment of brominated very short‐lived (VSL Br ) species by assuming CH 3 as surrogate for VSL . However, neglecting comprehensive in CCMs may yield an unrealistic representation the associated impacts. Here, we use Community Atmospheric Model with Chemistry (CAM‐Chem) CCM to quantify tropospheric and stratospheric changes between various chemical approaches increasing degrees complexity (i.e., surrogate, explicit, full)....

10.1029/2020gl091125 article EN cc-by-nc-nd Geophysical Research Letters 2020-12-29

Atmospheric oxidation largely determines the abundance and lifetime of short-lived climate forcers like methane, ozone aerosols, as well removal pollutants from atmosphere. Hydroxyl, nitrate and...

10.1039/d4ea00141a article EN cc-by-nc Environmental Science Atmospheres 2025-01-01

Abstract. Biogenic very short-lived bromocarbons (VSLBr) currently represent ∼25 % of the total stratospheric bromine loading. Owing to their much shorter lifetime compared anthropogenic long-lived (e.g. halons) and chlorine chlorofluorocarbons), impact VSLBr on ozone peaks in lowermost stratosphere, which is a key climatic radiative atmospheric region. Here we present modelling study evolution its chemical loss within tropics at mid-latitudes during 21st century. Two different experiments...

10.5194/acp-20-8083-2020 article EN cc-by Atmospheric chemistry and physics 2020-07-13

Abstract Reactive halogens (X + XO, X = I, Br or Cl) catalytically destroy a fraction of tropospheric ozone under present‐day (PD) conditions, however, their distribution and potential impact on pre‐industrial (PI) conditions remain largely unexplored. This study uses the Community Atmosphere Model with Chemistry (CAM‐Chem) to investigate effect anthropogenically amplified natural emissions halogenated species subsequent chemistry PI PD atmospheric conditions. results show that global...

10.1029/2022jd038283 article EN cc-by-nc-nd Journal of Geophysical Research Atmospheres 2023-06-19

Microcanonical variational rate coefficients and experimental for the OH addition to<italic>cis</italic>-3-hexene have been determined. Theoretical results showed a non-Arrhenius profile good agreement with data.

10.1039/c4cp05760k article EN Physical Chemistry Chemical Physics 2015-01-01

First relative kinetic study for the OH/Cl reactions with three chloro-fluoro-ethenes at room-temperature and atmospheric pressure environmental acceptability.

10.1039/c5ra13589c article EN RSC Advances 2015-01-01

In this work, we investigate the degradation process of 1-chlorobutane, initiated by OH radicals, under atmospheric conditions (air pressure 750 Torr and 296 K) from both experimental theoretical approaches. first one, a relative kinetic method was used to obtain rate coefficient for reaction, while products were identified time (1-chloro-2-butanone, 1-chloro-2-butanol, 4-chloro-2-butanone, 3-hydroxy-butanaldehyde, 3-chloro-2-butanol) using mass spectrometry, allowing suggesting reaction...

10.1021/acs.jpca.9b10426 article EN The Journal of Physical Chemistry A 2019-12-11

The rate coefficient of the cis-3-hexene + Cl atoms reaction at 296 ± 2 K and 750 10 Torr was determined using relative technique.The investigated an 80 L Teflon bag a gas chromatograph coupled with flame-ionization detection.Chlorine were produced by photolysis trichloroacetyl chloride.No previous experimental data available in literature, to best our knowledge.The mean second-order value found (4.13 0.51) × -10 cm 3 molecule -1 s .The agrees estimated structure-reactivity analysis, 4.27...

10.21577/0103-5053.20170078 article EN cc-by Journal of the Brazilian Chemical Society 2017-01-01

The Last-level cache (LLC) is one of the main GPU's shared resources that contributes to improve performance but also increases individual kernel's variability. This detrimental in scenarios which some level predictability required. While can be regained by deploying partitioning (isolation) mechanisms, isolation negatively affects efficiency. work shows not LLC and providing ability track contention kernels generate on each other allows them share space, hence increasing efficiency, while...

10.1109/iccd56317.2022.00021 article EN 2022 IEEE 40th International Conference on Computer Design (ICCD) 2022-10-01

&amp;lt;p&amp;gt;Many Chemistry Climate Models (CCMs) include a simplified treatment of brominated very short-lived (VSLBr) species by assuming long-lived methyl bromide (CH3Br) as surrogate for VSLBr. However, given that VSLBr (i.e., bromoform CHBr3 and dibromomethane CH2Br2) decompose more rapidly than CH3Br, their impact on upper tropospheric chemistry lowermost stratospheric ozone cannot be neglected. Thus, mistreatment in CCMs may yield an unrealistic representation associated impacts....

10.5194/egusphere-egu21-11411 article EN 2021-03-04

Halogens (I, Br and Cl) emitted from natural sources catalytically destroy a fraction of tropospheric ozone, trace gas that plays key role in atmospheric chemistry, both as greenhouse component photochemical smog, affecting air quality public health. Previous studies have explored the effect halogens on ozone present-day (PD) future time, while pre-industrial (PI) ambient conditions is quite uncertain. We use Community Atmospheric Model with Chemistry (CAM&amp;#727;Chem) to explore chemistry...

10.5194/egusphere-egu23-12850 preprint EN 2023-02-26
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