Dmitry Efremenko
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View article: A numerical model for solving the linearized gravity-wave equations by a multilayer method
A numerical model for solving the linearized gravity-wave equations by a multilayer method Open
We developed a numerical model to solve the linearized gravity-wave equations by a multilayer approach. Specifically, the model handles the linearized equations including viscosity, thermal conduction, and ion drag. The solution methods ar…
View article: An algorithm for solving the inverse problem in total internal reflection microscopy
An algorithm for solving the inverse problem in total internal reflection microscopy Open
View article: Erratum to: Solution of the Multimode Nonlinear Schrödinger Equation Using Physics-Informed Neural Networks
Erratum to: Solution of the Multimode Nonlinear Schrödinger Equation Using Physics-Informed Neural Networks Open
View article: Solution of the Multimode Nonlinear Schrödinger Equation Using Physics-Informed Neural Networks
Solution of the Multimode Nonlinear Schrödinger Equation Using Physics-Informed Neural Networks Open
Single-mode optical fibers (SMFs) have become the foundation of modern communication systems. However, their capacity is expected to reach its theoretical limit in the near future. The use of multimode fibers (MMF) is seen as one of the mo…
View article: The two-layered radiative transfer model for snow reflectance and its application to remote sensing of the Antarctic snow surface from space
The two-layered radiative transfer model for snow reflectance and its application to remote sensing of the Antarctic snow surface from space Open
The two-LAyered snow Radiative Transfer (LART) model has been proposed for snow remote sensing applications. It is based on analytical approximations of the radiative transfer theory. The geometrical optics approximation has been used to d…
View article: An advanced light scattering imaging model for total internal reflection microscopy considering a stratified medium
An advanced light scattering imaging model for total internal reflection microscopy considering a stratified medium Open
An advanced light scattering model for Total Internal Reflection Microscopy (TIRM) is presented. The model considers the specific TIRM geometry and deals with the scattering by an axisymmetric particle of arbitrary orientation placed in a …
View article: Detection and classification of volcanic ash based on satellite UV/VIS measurements 
Detection and classification of volcanic ash based on satellite UV/VIS measurements  Open
Volcanic eruptions impact human populations and the environment, with volcanic ash contributing to these effects through its influence on air quality, agriculture, and air transportation. Traditional satellite observation methods for monit…
View article: Enhancing Photon Transport Simulation in Earth’s Atmosphere: Acceleration of Python Monte Carlo Model Using Vectorization and Parallelization Techniques
Enhancing Photon Transport Simulation in Earth’s Atmosphere: Acceleration of Python Monte Carlo Model Using Vectorization and Parallelization Techniques Open
Photon transport within Earth’s atmosphere is a vital aspect of atmospheric science. The accurate modeling of radiative transfer is crucial for remote sensing data analysis. Yet, simulating the photon transport in multi-dimensional m…
View article: Fast Computations of the Top-of-the-Atmosphere Radiance in a Spectral Range 400–2500 nm Using the PYDOME Tool
Fast Computations of the Top-of-the-Atmosphere Radiance in a Spectral Range 400–2500 nm Using the PYDOME Tool Open
Accurate computations of the radiance in the gaseous absorption bands typically require fine wavelength steps. In this paper, a fast technique for computing a radiance spectrum in the wavelengthregion of 400–2500 nm is proposed. Our approa…
View article: Solution of the Radiative Transfer Equation for Vertically Inhomogeneous Media by Numerical Integration Solvers: Comparative Analysis
Solution of the Radiative Transfer Equation for Vertically Inhomogeneous Media by Numerical Integration Solvers: Comparative Analysis Open
An efficiency of the singular value decomposition (SVD) method and ordinary differential equation (ODE) solvers in finding the reflection matrix are compared. A reflection matrix can be found by solving the one-dimensional radiative transf…
View article: Scaling transformation of the multimode nonlinear Schrödinger equation for physics-informed neural networks
Scaling transformation of the multimode nonlinear Schrödinger equation for physics-informed neural networks Open
Single-mode optical fibers (SMFs) have become the backbone of modern communication systems. However, their throughput is expected to reach its theoretical limit in the nearest future. Utilization of multimode fibers (MMFs) is considered as…
View article: Volcanic SO <sub>2</sub> layer height by TROPOMI/S5P: evaluation against IASI/MetOp and CALIOP/CALIPSO observations
Volcanic SO <sub>2</sub> layer height by TROPOMI/S5P: evaluation against IASI/MetOp and CALIOP/CALIPSO observations Open
Volcanic eruptions eject large amounts of ash and trace gases such as sulfur dioxide (SO2) into the atmosphere. A significant difficulty in mitigating the impact of volcanic SO2 clouds on air traffic safety is that these gas emissions can …
View article: Evaluating the assimilation of S5P/TROPOMI near real-time SO <sub>2</sub> columns and layer height data into the CAMS integrated forecasting system (CY47R1), based on a case study of the 2019 Raikoke eruption
Evaluating the assimilation of S5P/TROPOMI near real-time SO <sub>2</sub> columns and layer height data into the CAMS integrated forecasting system (CY47R1), based on a case study of the 2019 Raikoke eruption Open
The Copernicus Atmosphere Monitoring Service (CAMS), operated by the European Centre for Medium-Range Weather Forecasts on behalf of the European Commission, provides daily analyses and 5 d forecasts of atmospheric composition, including f…
View article: Hyperspectral Satellite Remote Sensing of Aerosol Parameters: Sensitivity Analysis and Application to TROPOMI/S5P
Hyperspectral Satellite Remote Sensing of Aerosol Parameters: Sensitivity Analysis and Application to TROPOMI/S5P Open
Precise knowledge about aerosols in the lower atmosphere (optical properties and vertical distribution) is particularly important for studying the Earth’s climatic and weather conditions. Measurements from satellite sensors in sun-synchron…
View article: Comment on acp-2021-936
Comment on acp-2021-936 Open
Abstract. Volcanic eruptions eject large amounts of ash and trace gases such as sulfur dioxide (SO2) into the atmosphere. A significant difficulty in mitigating the impact of volcanic SO2…
View article: Aerosol Parameters Retrieval From TROPOMI/S5P Using Physics-Based Neural Networks
Aerosol Parameters Retrieval From TROPOMI/S5P Using Physics-Based Neural Networks Open
inn this paper, we present three algorithms for aerosol parameters retrieval from TROPOMI measurements in the O2 A-band. These algorithms use neural networks (i) to emulate the radiative transfer model and a Bayesian approach to solve the …
View article: Volcanic SO2 height retrieval from UV satellite measurements
Volcanic SO2 height retrieval from UV satellite measurements Open
Earth and Space Science Open Archive PosterOpen AccessYou are viewing the latest version by default [v1]Volcanic SO2 height retrieval from UV satellite measurementsAuthorsPascalHedeltiDNikitaFedkinMariLizaKoukouliiDDmitryEfremenkoKonstanti…
View article: Volcanic SO <sub>2</sub> Layer Height by TROPOMI/S5P; validation against IASI/MetOp and CALIOP/CALIPSO observations
Volcanic SO <sub>2</sub> Layer Height by TROPOMI/S5P; validation against IASI/MetOp and CALIOP/CALIPSO observations Open
Volcanic eruptions eject large amounts of ash and trace gases such as sulphur dioxide (SO2) into the atmosphere. A significant difficulty in mitigating the impact of volcanic SO2 clouds on air traffic safety is that these gas emissions can…
View article: Supplementary material to "Volcanic SO <sub>2</sub> Layer Height by TROPOMI/S5P; validation against IASI/MetOp and CALIOP/CALIPSO observations"
Supplementary material to "Volcanic SO <sub>2</sub> Layer Height by TROPOMI/S5P; validation against IASI/MetOp and CALIOP/CALIPSO observations" Open
Figure S 1. SO2 load [D.U.] for two example days of the Raikoke 2019 eruptive period, the 23 rd of June on the left and the 2 nd
View article: An Overview of Neural Network Methods for Predicting Uncertainty in Atmospheric Remote Sensing
An Overview of Neural Network Methods for Predicting Uncertainty in Atmospheric Remote Sensing Open
In this paper, we present neural network methods for predicting uncertainty in atmospheric remote sensing. These include methods for solving the direct and the inverse problem in a Bayesian framework. In the first case, a method based on a…
View article: Comment on gmd-2021-219
Comment on gmd-2021-219 Open
Abstract. The Copernicus Atmosphere Monitoring Service (CAMS), operated by the European Centre for Medium-Range Weather Forecasts on behalf of the European Commission, provides daily analyses and 5âd forecas…
View article: The CAMS volcanic forecasting system utilizing near-real time data assimilation of S5P/TROPOMI SO <sub>2</sub> retrievals
The CAMS volcanic forecasting system utilizing near-real time data assimilation of S5P/TROPOMI SO <sub>2</sub> retrievals Open
The Copernicus Atmosphere Monitoring Service (CAMS), operated by the European Centre for Medium-Range Weather Forecasts on behalf of the European Commission, provides daily analyses and 5-day forecasts of atmospheric composition, including…
View article: Optimization of Aerosol Model Selection for TROPOMI/S5P
Optimization of Aerosol Model Selection for TROPOMI/S5P Open
To retrieve aerosol properties from satellite measurements, micro-physical aerosol models have to be assumed. Due to the spatial and temporal inhomogeneity of aerosols, choosing an appropriate aerosol model is an important task. In this pa…
View article: Extremely fast retrieval of volcanic SO2 layer heights from UV satellite data using inverse learning machines
Extremely fast retrieval of volcanic SO2 layer heights from UV satellite data using inverse learning machines Open
<p>Precise knowledge of the location and height of the volcanic sulfur dioxide (SO<sub>2</sub>) plume is essential for accurate determination of SO<sub>2</sub> emitted by volcanic eruptions, however so far not…
View article: Fast Hyper-Spectral Radiative Transfer Model Based on the Double Cluster Low-Streams Regression Method
Fast Hyper-Spectral Radiative Transfer Model Based on the Double Cluster Low-Streams Regression Method Open
Fast radiative transfer models (RTMs) are required to process a great amount of satellite-based atmospheric composition data. Specifically designed acceleration techniques can be incorporated in RTMs to simulate the reflected radiances wit…
View article: A Proof-of-Concept Algorithm for the Retrieval of Total Column Amount of Trace Gases in a Multi-Dimensional Atmosphere
A Proof-of-Concept Algorithm for the Retrieval of Total Column Amount of Trace Gases in a Multi-Dimensional Atmosphere Open
An algorithm for the retrieval of total column amount of trace gases in a multi-dimensional atmosphere is designed. The algorithm uses (i) certain differential radiance models with internal and external closures as inversion models, (ii) t…
View article: Methods Calculating the Slab Radiance Factor
Methods Calculating the Slab Radiance Factor Open
One of the most critical problems of realistic visualization of the real-world objects is physically adequate modeling of their reflection of light. Reflection of light by objects occurs both from the surface and the bulk of matter (scatte…
View article: The Cluster Low-Streams Regression Method for Fast Computations of Top-of-the-Atmosphere Radiances in Absorption Bands
The Cluster Low-Streams Regression Method for Fast Computations of Top-of-the-Atmosphere Radiances in Absorption Bands Open
Atmospheric composition sensors provide a huge amount of data. A key component of trace gas retrieval algorithms are radiative transfer models (RTMs), which are used to simulate the spectral radiances in the absorption bands. Accurate RTMs…
View article: Two Machine Learning Based Schemes for Solving Direct and Inverse Problems of Radiative Transfer Theory
Two Machine Learning Based Schemes for Solving Direct and Inverse Problems of Radiative Transfer Theory Open
Artificial neural networks (ANNs) are used to substitute computationally expensive radiative transfer models (RTMs) and inverse operators (IO) for retrieving optical parameters of the medium. However, the direct parametrization of RTMs and…
View article: Model Selection in Atmospheric Remote Sensing with an Application to Aerosol Retrieval from DSCOVR/EPIC, Part 1: Theory
Model Selection in Atmospheric Remote Sensing with an Application to Aerosol Retrieval from DSCOVR/EPIC, Part 1: Theory Open
The retrieval of aerosol and cloud properties such as their optical thickness and/or layer/top height requires the selection of a model that describes their microphysical properties. We demonstrate that, if there is not enough information …