Journal of Quantitative Spectroscopy & Radiative Transfer最新文献

{"title":"Topological magneto-electric effects for a high permeability material-plasmonic-coated topological insulator stratified sphere","authors":"Huai-Yi Xie","doi":"10.1016/j.jqsrt.2025.109801","DOIUrl":"10.1016/j.jqsrt.2025.109801","url":null,"abstract":"<div><div>We investigate how the topological magneto-electric effect (TME) affects multiple resonances in the presence of a high permeability material (HPM)-plasmonic-coated topological insulator (TI) stratified sphere via applying the dyadic Green's functions (DGFs) incorporating layer-dependent relative permeability. Our focus is on how a HPM shell affects the TME-modified molecular decay rate spectrum of an emitting dipole in the vicinity of a HPM-metal-coated/metal-HPM-coated TI sphere. Our analysis reveals that for each multipolar resonance in the decay rate spectrum, the TME-induced red-shifts of the plasmonic bonding/antibonding mode and multiple magnetic-induced modes are explored. For a HPM-metal-coated TI sphere, the antibonding mode exhibits more significant TME-induced red-shifts than the bonding mode and the first magnetic-induced mode. In particular, the TME-induced red-shifts of the first magnetic-induced mode vanish when the HPM shell has a relative permeability of 500 and a thickness of 2 nm. In contrast, for a metal-HPM-coated TI sphere, the first magnetic-induced mode shows larger TME-induced red-shifted values than one for a HPM-metal-coated TI sphere. These phenomenological findings provide some useful guidance with experimenters to design realistic experiments for exploring possible unique TME signatures via utilizing some versatile HPM-plasmonic TI coreshell systems in their tunability of the multiple resonance modes.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"351 ","pages":"Article 109801"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145845041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Specially correlated radially polarized beams scattered by a semi-soft boundary medium","authors":"Zhirong Liu ,&nbsp;Shiwei Liu","doi":"10.1016/j.jqsrt.2025.109790","DOIUrl":"10.1016/j.jqsrt.2025.109790","url":null,"abstract":"<div><div>This article extended the scope of the scattering theory of vector partially coherent light field by investigating the scattering of specially correlated radially polarized (SCRP) beams from a semi-soft boundary medium. Through complex calculation, cross spectral density (CSD) matrix of the targeted scattering light field was obtained, and then, scattered spectral density, degree of coherence (DOC), and degree of polarization (DOP) of the scattered light field were analyzed. Furthermore, variations of the scattered light field were examined by selecting different parameter values of the incident light and the medium. Results indicated that, through scattering regulation, hollow, flat-top, or Gaussian distributions could be formed for the SCRP beams, and DOC of the scattering light field was mainly influenced by the medium, instead of the incident light source. In addition, it was of interest to find that the central region of the scattering light field exhibited complete depolarization, while the surrounding was nearly fully polarized. These findings would broaden the domain of scattering research, and provided a physical basis for both theoretical investigation and practical application.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"351 ","pages":"Article 109790"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145731358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical investigation on size retrieval error for coated dust aerosol with different shape distributions based on spherical shape assumption and the effects on radiative estimation","authors":"Jia Liu ,&nbsp;Yunhan Cao ,&nbsp;Jiaxing Ren ,&nbsp;Xuehai Zhang ,&nbsp;Xiaoli Wei ,&nbsp;Jinbao Han ,&nbsp;Bo Yin","doi":"10.1016/j.jqsrt.2025.109792","DOIUrl":"10.1016/j.jqsrt.2025.109792","url":null,"abstract":"<div><div>Dust aerosols significantly affect the climate, which can be coated by non-absorptive nitrate and absorptive organic carbon, forming the core-shell structure. Lidar can obtain the size distribution of dust aerosols based on spherical shape assumption and Mie scattering theory. However, this basic assumption significantly differs from the actual dust particles. In this study, optical properties were calculated using the two-layered spheroid model, and backscattering and extinction properties were employed to retrieve dust particle size based on spherical shape assumption. The retrieval error was studied, and the estimation accuracy of radiative effect was analyzed based on the retrieval results. Results show that the relative error (<em>RE</em>) in retrieved size for coated dust with absorptive coatings is lower than that with non-absorptive coatings, and the <em>RE</em> increases with the aspect ratio and core-shell ratio, reaching a maximum of 95.93 %. For dust particle population, most of the retrieved mean radius (<em>r_m</em>) based on extinction is underestimated but overestimated based on backscattering, while the retrieved standard deviation (<em>σ</em>) based on two optical properties is all overestimated. The errors in <em>r_m</em> and <em>σ</em> are relatively large for dust with absorptive coatings, with the maximum of 10.52 % and 33.70 %, respectively. The simulated radiative effect at the top of the atmosphere (TOA) based on recalculated optical properties using size retrieval results ranges from −192.99 to −4.54 W m⁻². The maximum relative error (<em>RE_F</em>) in radiative effect at TOA for coated dust with absorptive coatings at 355 nm reaches 87.71 %, while it ranges from −35.04 % to 16.13 % for other coating components and wavelengths. The radiative effect assessment has optimal performance when the shape distribution from the Optical Properties of Aerosols and Clouds (OPAC) version 4.0 dataset is employed, with the <em>RE_F</em> below 10 %.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"351 ","pages":"Article 109792"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145731357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New odd parity autoionization levels of Lu I by three-step three colour RIMS","authors":"Diptimayee Biswal ,&nbsp;Laxmi priya Meher ,&nbsp;Vipul Kumar ,&nbsp;D.R. Rathod ,&nbsp;Asawari D. Rath ,&nbsp;Sanjay Sethi","doi":"10.1016/j.jqsrt.2025.109749","DOIUrl":"10.1016/j.jqsrt.2025.109749","url":null,"abstract":"<div><div>Three-step three colour resonance ionization spectroscopy is employed in a linear time of flight mass spectrometer to investigate the autoionization spectra of atomic lutetium in the energy range 47360 - 53200 cm^-¹ above ground level. Using two-step excitation, Lu I atoms in ground / first meta-stable level are transferred to highly excited intermediate levels at ∼ 4 eV above the ground level and third laser is scanned to explore autoionization resonances connecting from the intermediate level. Total 71 odd-parity autoionization levels including 21 new levels are observed.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"350 ","pages":"Article 109749"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145531873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multiscale modeling of the high-temperature radiative properties of ceria ceramics under thermochemical redox conditions","authors":"Léo Gaillard ,&nbsp;Pierre-Marie Geffroy ,&nbsp;Abderezak Aouali ,&nbsp;Benoit Rousseau","doi":"10.1016/j.jqsrt.2025.109783","DOIUrl":"10.1016/j.jqsrt.2025.109783","url":null,"abstract":"<div><div>A multiscale modeling approach is proposed to determine the normal spectral emissivity of a 1.92 mm thick and 98% dense cerium oxide ceramic containing a small amount of micron size pores. The model is based on measurements of the electrical conductivity of the ceramic for the thermal operating regime set by the actual solar thermochemical production of H<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>, i.e. from 900 to 1500 °C at a oxygen partial pressure of 10⁻⁵ atm. From a radiative point of view, the ceramic is defined as the volumetric distribution of spherical pores in a set of grains forming a radiatively homogeneous and continuous matrix. Room temperature normal hemispherical reflectance and transmittance measurements give analytically the scattering coefficient of this absorbing and scattering medium, considered independent from the temperature, using the modified two-flux approximation. The absorption coefficient is given at a fixed temperature and atmosphere by a semi-quantum Drude-Lorentz model whose parameters are derived from electrical conductivity measurements. The combination of both coefficients allow to determine critical optical thickness of the sample depending on the temperature, and to model emissivity. The multiscale model predicts the increase of an emissivity plateau between 2500 and 20000 cm⁻¹ with the temperature, going from 0.70 at 900 °C to 0.84 at 1500 °C, higher than the value of 0.20 measured at room temperature.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"351 ","pages":"Article 109783"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145689301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Satellite remote sensing of aerosol single scattering albedo: Instruments, algorithms, and challenges","authors":"Yueming Dong ,&nbsp;Zhenyu Zhang ,&nbsp;Jing Li","doi":"10.1016/j.jqsrt.2025.109802","DOIUrl":"10.1016/j.jqsrt.2025.109802","url":null,"abstract":"<div><div>Aerosol single scattering albedo (SSA), which describes the scattering and absorbing properties of aerosols, is a critical optical parameter in assessing the radiative effects of aerosols. However, unlike aerosol optical depth (AOD), current global SSA retrievals from satellites are largely limited and highly uncertain. Constraining aerosol radiative forcing typically requires an observational accuracy of <span><math><mrow><mo>±</mo><mn>0</mn><mo>.</mo><mn>03</mn></mrow></math></span> for the single-scattering albedo (SSA), yet nearly all existing operational satellite products fail to meet this requirement. Global SSA products are mainly provided by sensors observing in the ultra-violet (UV) or with Multi-Angle Polarization (MAP) capabilities. However, SSA provided by UV sensors lacks insights in visible wavelengths and is highly sensitive to aerosol layer height assumptions. Although MAP instruments yield the most accurate satellite-based SSA estimates to date, they still rarely achieve the required accuracy. Only a few advanced MAP sensors offer the polarization precision theoretically needed to meet this target, but no operational products from these instruments are currently available. Other efforts include combining ground-based and satellite observations, but typically with limited spatial coverage. This review synthesizes current research on the satellite remote sensing of SSA, with a focus on the instrumentation and retrieval algorithms. A discussion on the remaining challenges and future research needs is also provided.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"352 ","pages":"Article 109802"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145956748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploration of coherent backscattering mechanisms for nonspherical particles in geometric optics regime","authors":"Masanori Saito ,&nbsp;Ping Yang ,&nbsp;Leung Tsang ,&nbsp;Hajime Okamoto ,&nbsp;Jiachen Ding","doi":"10.1016/j.jqsrt.2025.109805","DOIUrl":"10.1016/j.jqsrt.2025.109805","url":null,"abstract":"<div><div>Coherent backscattering enhancement (CBE) is critical to the quasi-backscattering (i.e., close to 180° scattering angle) properties of a nonspherical particle. However, the conventional geometric optics method (GOM) does not account for CBE in computing the single-scattering properties of nonspherical particles, leading to systematic biases in the phase function at quasi-backscattering angles. To mitigate the biases, this study explores the mechanisms of CBE in the geometric optics regime and derives a correction formula to approximately account for the CBE effect in the phase functions computed with the principles of geometric optics. In particular, the enhancement of the scattering intensity at quasi-backscattering angles can be explained by the CBE mechanisms associated with constructive interference due to mutual pairs of transmitted rays going through internal reflection-refraction events within a particle. The present CBE correction is obtained based on physical rationales about the CBE mechanisms and substantially improves the consistency of the computed phase functions of an ensemble of randomly oriented nonspherical particles, including droxtals and conical hydrometeors, between numerically rigorous methods and GOMs with the CBE correction. The applicability and limitations of the present CBE correction formula are also discussed.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"352 ","pages":"Article 109805"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145894106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An efficient transformer-based aerosol retrieval algorithm for the polarization crossfire (PCF) satellite senor suite: development and validation>","authors":"Haoran Gu ,&nbsp;Zhengqiang Li ,&nbsp;Yan Ma ,&nbsp;Luo Zhang ,&nbsp;Cheng Chen ,&nbsp;Gerrit de Leeuw ,&nbsp;Zihan Zhang ,&nbsp;Cheng Fan ,&nbsp;Li Li ,&nbsp;Zhenwei Qiu ,&nbsp;Zhenhai Liu ,&nbsp;Jin Hong ,&nbsp;Qian Yao ,&nbsp;Zhe Ji","doi":"10.1016/j.jqsrt.2025.109793","DOIUrl":"10.1016/j.jqsrt.2025.109793","url":null,"abstract":"<div><div>Multi-angle polarimetric (MAP) satellite observations provide information on aerosol optical and microphysical properties. In this study, we propose an effective transformer-based deep learning (DL) algorithm for aerosol retrieval using MAP observations, utilizing synergistic observations from the Directional Polarimetric Camera (DPC) and POSP (Particulate Observing Scanning Polarimeter) sensors of the polarization crossfire (PCF) sensor suite. The use of these two sensors overcomes limitations of traditional DL approaches that rely solely on sparse ground-based stations. The proposed algorithm involves two main steps: (1) a date base of over 41,000 high-confidence aerosol samples are is constructed using Aerosol Robotic Network (AERONET) data supplemented by selected high-quality-screening data retrieved from the Particulate Observing Scanning Polarimeter (POSP sensor) from using the Generalized Retrieval of Atmosphere and Surface Properties (GRASP) algorithm; (2) A transformer model is trained on DPC MAP measurements, to learn the nonlinear representation linking spaceborne measurements with targets for estimating aerosol optical depth (AOD), fine-mode AOD (FAOD), and coarse-mode AOD (CAOD) at 550 nm. Comparison of the aerosol parameters derived from application of the transformer model to DPC observational data to AERONET reference data observations, shows substantial improvement over models trained solely on AERONET data, with high Pearson correlation coefficients (<em>R</em>) of 0.855 (AOD), 0.812 (FAOD), and 0.793 (CAOD), and slopes of 0.837, 0.813, and 0.801. Comparison with POSP/GRASP aerosol products shows improved spatial coverage, especially over bright surfaces and during extreme aerosol events such as dust and forest fires. This scalable and transferable framework integrates optimal estimation (OE) interpretability with DL efficiency, achieving 3–4 orders of magnitude speedup over GRASP methods and offering a promising solution for next-generation MAP satellite missions.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"351 ","pages":"Article 109793"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145784687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The dynamic characteristics of non-diffracting skyrmionic beams under tight focusing configurations","authors":"Guoxia Han,&nbsp;Yihan Tian,&nbsp;Ke Hu,&nbsp;Feiyang Zhang,&nbsp;Maoda Jing,&nbsp;Guangyi Wang,&nbsp;Qihui Zhao,&nbsp;Li Zhao","doi":"10.1016/j.jqsrt.2025.109756","DOIUrl":"10.1016/j.jqsrt.2025.109756","url":null,"abstract":"<div><div>Optical skyrmions stand out by virtue of their non-trivial topological structures and have attracted considerable interest of many researchers in recent years. However, the significant potential of non-diffracting skyrmionic beams for optical trapping and manipulation remains largely overlooked. In this work, the tight focusing properties of non-diffracting skyrmionic beams are investigated and the dynamic characteristics of the topological fields under tight focusing conditions are first explored. The topological properties of skyrmionic beams in Bessel modes under tight focusing conditions are studied systematically based on the Richards -Wolf vector diffraction theory. We theoretically demonstrate that a transformation of the phase difference is exhibited for skyrmionic beams through tight focusing process, while the skyrmion number remains unchanged in the central region. Furthermore, a comprehensive numerical analysis of the force and torque on Rayleigh particles exerted by the tightly focused skyrmionic beams is performed and the influence of skyrmion numbers and transverse components of the wave-vector on the trapping behaviors is conducted. The multi-particles can be captured in the tightly focused skyrmionic beams by adjusting these parameters. Our findings in this work allow a deeper exploration of skyrmions in applications, and provide essential theoretical support for its utilization in particle manipulation and sorting.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"350 ","pages":"Article 109756"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145559877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling and analysis of high-resolution H212CO spectra in the range 4450-5000 cm-1","authors":"A.A. Rodina ,&nbsp;A.V. Nikitin ,&nbsp;A.E. Protasevich ,&nbsp;L. Manceron ,&nbsp;M. Rey ,&nbsp;Vl.G. Tyuterev","doi":"10.1016/j.jqsrt.2025.109757","DOIUrl":"10.1016/j.jqsrt.2025.109757","url":null,"abstract":"<div><div>This study presents modeling and analysis of the line positions and intensities of H₂CO in the 4450–5000 cm⁻¹ spectral region, recorded at a low temperature (160–166 K) at various pressures using a high-resolution Fourier transform spectrometer. The calculations are based on a series of numerical block-diagonalization procedures applied to the nuclear-motion Hamiltonian, which was constructed from our <em>ab initio</em> potential energy and dipole moment surfaces, resulting in a new effective model for successive rovibrational polyads. Over 4600 assigned transitions were included in the empirical optimization of the model parameters using observed line positions. The fitting process for line intensities involved about 3300 transitions. The root-mean-square (RMS) deviation for line positions in the studied range is 0.00094 cm^-1, while the RMS deviation for the line intensities is 10.18 %. New theoretical predictions for the isotopic species H₂¹³C¹⁶O, H₂¹²C¹⁸O, for the band origins are reported. The improved line list contains 25,725 transitions, including both experimentally measured and calculated lines. Validations of the new list are discussed, using comparisons of the transmittance simulation versus our high-resolution experimental spectra at <em>T</em> = 160–166 K and of cross-section simulations at <em>T</em> = 296 K versus medium-resolution PNNL observations.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"350 ","pages":"Article 109757"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145559884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}