A5040992396- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Advanced Chemical Physics Studies
- Atmospheric aerosols and clouds
- Atmospheric and Environmental Gas Dynamics
- Astrophysics and Star Formation Studies
- Molecular Spectroscopy and Structure
- Radioactive contamination and transfer
- Astro and Planetary Science
- Advanced Numerical Analysis Techniques
- Diet and metabolism studies
- Cold Fusion and Nuclear Reactions
- Methane Hydrates and Related Phenomena
- Boron and Carbon Nanomaterials Research
- Noncommutative and Quantum Gravity Theories
- Adipose Tissue and Metabolism
- Inorganic Fluorides and Related Compounds
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Diabetes and associated disorders
- Spacecraft and Cryogenic Technologies
- Mathematics and Applications
- Silicon Effects in Agriculture
- Molecular Junctions and Nanostructures
- CO2 Sequestration and Geologic Interactions
- Quantum Mechanics and Applications
Istituto di Biologia e Biotecnologia Agraria
2025
University of Perugia
2023-2025
University of L'Aquila
2012-2016
Space (Italy)
2013
Abstract. In this study we examine the performance of 31 global model radiative transfer schemes in cloud-free conditions with prescribed gaseous absorbers and no aerosols (Rayleigh atmosphere), scattering-only aerosols, more absorbing aerosols. Results are compared to benchmark results from high-resolution, multi-angular line-by-line radiation models. For purely scattering bias relative models top-of-the atmosphere aerosol forcing ranges roughly −10 20%, over- underestimates cooling at...
Abstract. Aerosols have important impacts on air quality and climate, but the processes affecting their removal from atmosphere are not fully understood poorly constrained by observations. This makes modelled aerosol lifetimes uncertain. In this study, we make use of an observational constraint provided radionuclide measurements investigate causes differences within a set global models. During Fukushima Dai-Ichi nuclear power plant accident March 2011, radioactive isotopes cesium-137 (137Cs)...
Abstract We have diagnosed the lifetimes of long‐lived source gases emitted at surface and removed in stratosphere using six three‐dimensional chemistry‐climate models a two‐dimensional model. The all used same standard photochemical data. investigate effect different definitions lifetimes, including running with both mixing ratio (MBC) flux (FBC) boundary conditions. Within model, by methods agree very well. Using FBCs versus MBCs leads to tracer burden as implied lifetime contained MBC...
Abstract. Aerosols have important impacts on air quality and climate, but the processes affecting their removal from atmosphere are not fully understood poorly constrained by observations. This makes modelled aerosol lifetimes uncertain. In this study, we make use of an observational constraint provided radionuclide measurements investigate causes differences within a set global models. During Fukushima Dai-Ichi nuclear power plant accident March 2011, radioactive isotopes cesium-137 (137Cs)...
Abstract. In this study we examine the performance of 31 global model radiative transfer schemes in cloud-free conditions with prescribed gaseous absorbers and no aerosols (Rayleigh atmosphere), scattering-only aerosols, more absorbing aerosols. Results are compared to benchmark results from high-resolution, multi-angular line-by-line radiation models. For purely scattering bias relative models top-of-the atmosphere aerosol forcing ranges roughly −10 20%, over- underestimates cooling at...
Gas-phase reactions of atomic sulfur in its first electronically excited metastable state, S(1D), with water and methanol have been theoretically investigated to characterize their potential energy surfaces, the reaction mechanisms, product branching fractions. According our results, both proceed formation bound intermediates that, for isolated systems, decompose into products because large content which they are formed. The SO(a 1Δ) + H2 channel is only open one S(1D) H2O reaction, while...
The formation of CN and its isotopologue C15N through radiative association has been investigated. We considered two processes for the collisions ground state C(3P) N(4S) atoms (A2Π → X2Σ+ b4Π a4Σ+), as well as, first time, we investigated excited N(2D) (B2Σ+ X2Σ+). cross-sections three have calculated using semi-classical, quantum mechanical, Breit–Wigner theories. rate constants, derived from combination semi-classical results, fitted to Kooij formula be used in astrochemical modeling....
Introduction:  Astrochemistry is a multidisciplinary subject that allows us to investigate formation and destruction routes of molecules found in extraterrestrial environments, such as planetary atmospheres, comets or the interstellar medium (ISM) [1]. To this day, there still lack knowledge concerning chemistry minor species, for example, are important issues related presence sulphur ISM, like depletion problem [2]. Many species (H2S, OCS, SO, S2, SO2 CS2) have been identified coma...
Silicon is one of the most abundant elements in universe, and it predominantly stored cores dust grains, meteoroids, meteorites form silicates carbides. When intense shocks occur, besides being released interstellar medium (ISM) as gaseous SiO its isotopologues, silicon can be set free elemental form, ready to further react [e.g., 1, 2]. Relevant this study, SiS has been detected few astronomical environments: shocked regions L1157-B1, associated with an outflow driven by a low-mass...
Over the last decade, there has been an important advance in comprehension of formation and destruction routes most common interstellar chemical species. However, a significant lack knowledge concerning chemistry other minor species is still present, often due to limited amount computational experimental data. In this contribution, possible role electronically-excited sulphur S(1D) oxygen O(1D)  in or cometary ice explored through theoretical characterization reaction with H2O...
The presence of dimethyl sulfide (DMS) in the atmosphere exoplanets has been invoked as a potential biosignature since its Earth biological origin. Dimethylsulfoniopropionate (DMSP) is produced by phytoplankton and then degraded to form methanethiol (CH3SH) DMS. Microbial methylation detoxification processes can also produce DMS from hydrogen H2S.Recently, tentative detection on candidate Hycean exoplanet K2-18 b was reported work Madhusudhan et al. [1]. Dimethyl detected coma comet...
Gas-phase reactions of atomic sulfur in its first electronically excited metastable state, S(1D), with water and methanol have been theoretically investigated to characterize their potential energy surfaces, the reaction mechanisms, product branching fractions. According our results, both proceed formation bound intermediates that, for isolated systems, decompose into products because large content which they are formed. The SO(a 1Δ) + H2 channel is only open S(1D) H2O reaction, while many...