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This paper studies two high-pollution episodes over Greater Tokyo: 9 and 10 December 1999, and 31 July and 1 August 2001. Results obtained with the chemistry-transport model (CTM) Polair3D are compared to measurements of inorganic PM2.5. To…

Atmospheric and Oceanic Physics · Physics 2015-05-13 Karine Sartelet , Hiroshi Hayami , Bruno Sportisse

Because of new telescopes that will dramatically improve our knowledge of the interstellar medium, chemical models will have to be used to simulate the chemistry of many regions with diverse properties. To make these models more robust, it…

Astrophysics of Galaxies · Physics 2011-03-16 V. Wakelam , E. Herbst , J. Le Bourlot , F. Hersant , F. Selsis , S. Guilloteau

Organic aerosols (OA) comprise a major fraction of atmospheric particulate matter and frequently contain acidic species, yet their contribution to overall aerosol acidity has not been explicitly considered in global climate models. We…

Atmospheric and Oceanic Physics · Physics 2025-10-06 Gargi Sengupta , Kunal Ghosh , Prithvi R. Jallu , Nønne L. Prisle

Nowadays, particulate matter, especially that with small dimension as PM10, PM2.5 and PM1, is the air quality indicator most commonly associated with a number of adverse health effects. In this paper it is analyzed the impact that a natural…

Atmospheric and Oceanic Physics · Physics 2020-05-14 A. Cuspilici , P. Monforte , M. A. Ragusa

The South and East Asian summer monsoons are globally significant meteorological features, creating a strongly seasonal pattern of precipitation. The stability of the monsoon is of extreme importance for a vast range of ecosystems and for…

Atmospheric and Oceanic Physics · Physics 2023-10-27 Lucy Recchia , Valerio Lucarini

The class II masers of methanol are associated with the early stages of formation of high-mass stars. Modelling of these dense, dusty environments has demonstrated that pumping by infrared radiation can account for the observed masers.…

Astrophysics · Physics 2009-11-11 D. M. Cragg , A. M. Sobolev , P. D. Godfrey

The aerosol mixing state significantly affects the climate and health impacts of atmospheric aerosol particles. Simplified aerosol mixing state assumptions, common in Earth System models, can introduce errors in the prediction of these…

Machine Learning · Computer Science 2020-12-08 Zhonghua Zheng , Joseph Ching , Jeffrey H. Curtis , Yu Yao , Peng Xu , Matthew West , Nicole Riemer

The influence of chemical composition changes on the room temperature mechanical proper-ties in the C15 CaAl2 Laves phase were investigated in two off-stoichiometric compositions with 5.7 at.-% Mg addition (Ca33Al61Mg6) and 10.8 at.-% Mg…

Aim: To determine whether or not gas-phase chemical models with homogeneous and time-independent physical conditions explain the many observed molecular abundances in astrophysical sources, it is crucial to estimate the uncertainties in the…

Astrophysics · Physics 2016-08-15 Valentine Wakelam , Eric Herbst , Franck Selsis , Gérard Massacrier

We present and validate a new network of atmospheric thermo-chemical and photo-chemical sulfur reactions. We use a 1-D chemical kinetics model to investigate these reactions as part of a broader HCNO chemical network in a series of hot and…

Earth and Planetary Astrophysics · Physics 2021-07-07 Richard Hobbs , Paul Rimmer , Oliver Shorttle , Nikku Madhusudhan

Toward the goal of using Scientific Machine Learning (SciML) emulators to improve the numerical representation of aerosol processes in global atmospheric models, we explore the emulation of aerosol microphysics processes under cloud-free…

Atmospheric and Oceanic Physics · Physics 2026-04-24 Shady E. Ahmed , Hui Wan , Saad Qadeer , Panos Stinis , Kezhen Chong , Mohammad Taufiq Hassan Mozumder , Kai Zhang , Ann S. Almgren

Laboratory experiments have shown that cardiovascular diseases are positively correlated to the concentration of ambient air pollutants, such as SO2, NO2, PM10, etc. It has also been repeatedly reported in many countries that increased…

Applications · Statistics 2013-08-08 Menghui Li , Dasheng Luo , Chenghua Cao , Xiaochuan Pan , Qixin Wang

Nitrogen-bearing molecules in cold molecular clouds exhibit a range of isotopic fractionation ratios and these molecules may be the precursors of $^{15}$N enrichments found in comets and meteorites. Chemical model calculations indicate that…

Astrophysics of Galaxies · Physics 2017-11-23 E. S. Wirström , S. B. Charnley

We examine several different simplified approaches for modelling the chemistry of CO in three-dimensional numerical simulations of turbulent molecular clouds. We compare the different models both by looking at the behaviour of integrated…

Astrophysics of Galaxies · Physics 2015-05-27 S. C. O. Glover , P. C. Clark

Protoplanetary disks are challenging objects for astrochemical models due to strong density and temperature gradients and due to the UV photons 2D propagation. In this paper, we have studied the importance of several model parameters on the…

Isothermal-isobaric molecular dynamics simulations are used to examine the microscopic structure and other properties of a model solution consisting of NaCl salt dissolved in water-methanol mixture. The SPC/E water model and the united atom…

Soft Condensed Matter · Physics 2018-06-27 M. Cruz Sanchez , J. Gujt , S. Sokolowski , O. Pizio

Aerosols' impact on the performance of a clear-sky solar irradiance model is often evaluated from the perspective of the overall accuracy of estimates. This study assesses the aerosol role in clear-sky solar irradiance modelling from a…

The Indian summer monsoon (ISM) and associated monsoon intraseasonal oscillations (MISOs) influence the billions of people living in the Indian subcontinent. This study explores the role of autoconversion parameterization in microphysical…

Atmospheric and Oceanic Physics · Physics 2025-05-08 Ushnanshu Dutta , Moumita Bhowmik , Anupam Hazra , Suryachandra. A. Rao , Jen-Ping Chen

The Mass Spectrometer and Incoherent Scatter radar (MSIS) model family has been developed and improved since the early 1970's. The most recent version of MSIS is the Naval Research Laboratory (NRL) MSIS 2.0 empirical atmospheric model.…

Space Physics · Physics 2022-12-07 Richard J. Licata , Piyush M. Mehta , Daniel R. Weimer , W. Kent Tobiska , Jean Yoshii

The modulated structure of the martensite phase of Ni2MnGa is revisited using high resolution synchrotron x-ray powder diffraction (SXRPD) measurements, which reveals higher order satellite reflections up to the 3rd order and phason…

Materials Science · Physics 2014-08-04 Sanjay Singh , V. Petricek , Parasmani Rajput , Adrian H. Hill , E. Suard , S. R. Barman , Dhananjai Pandey
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