Výsledky vyhledávání - "Patrick G. Stegmann"

Study of the effects of phytoplankton morphology and vertical profile on lidar attenuated backscatter and depolarization ratio

Autor: Jiachen Ding, Patrick G. Stegmann, Xiaodong Zhang, Bingqiang Sun, Ping Yang

Publikováno v: Journal of Quantitative Spectroscopy and Radiative Transfer. 225:1-15

Propagation of a lidar beam in a coupled atmosphere-ocean model consisting of multiple atmospheric and upper oceanic layers and a rough ocean surface is studied by using a vectorized Monte Carlo radiative transfer solver optimized specifically for li

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9b492cb6bf4286f8977c5b794ae7886e
https://doi.org/10.1016/j.jqsrt.2018.12.009

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A deep learning approach to fast radiative transfer

Autor: Patrick G. Stegmann, Benjamin Johnson, Isaac Moradi, Bryan Karpowicz, Will McCarty

Publikováno v: Journal of Quantitative Spectroscopy and Radiative Transfer. 280:108088

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f286f576362106c6a65e8fff0e502812
https://doi.org/10.1016/j.jqsrt.2022.108088

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A stochastic model for density-dependent microwave Snow- and Graupel scattering coefficients of the NOAA JCSDA community radiative transfer model

Autor: Ping Yang, Guanglin Tang, Patrick G. Stegmann, Benjamin T. Johnson

Publikováno v: Journal of Quantitative Spectroscopy and Radiative Transfer. 211:9-24

A structural model is developed for the single-scattering properties of snow and graupel particles with a strongly heterogeneous morphology and an arbitrary variable mass density. This effort is aimed to provide a mechanism to consider particle mass

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::847a0b982bccc40a98cd70c7ad821455
https://doi.org/10.1016/j.jqsrt.2018.02.026

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A regional, size-dependent, and causal effective medium model for Asian and Saharan mineral dust refractive index spectra

Autor: Patrick G. Stegmann, Ping Yang

Publikováno v: Journal of Aerosol Science. 114:327-341

A model is developed for the refractive index spectra of desert mineral dust. This model is applicable regionally to both Asian and Saharan dust as the largest global aerosol sources. The capability of the model further aims at representing important

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::26c0d79b1f2cfbb31e5158dff24529a5
https://doi.org/10.1016/j.jaerosci.2017.10.003

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Effect of Particle Shape, Density, and Inhomogeneity on the Microwave Optical Properties of Graupel and Hailstones

Autor: Benjamin T. Johnson, R. Lee Panetta, Ping Yang, Leung Tsang, Guanglin Tang, Patrick G. Stegmann

Publikováno v: IEEE Transactions on Geoscience and Remote Sensing. 55:6366-6378

Atmospheric ice particles can be rimed and contaminated (e.g., by soot attachments). Previous optical property calculations usually assume rimed particles such as graupel and hailstones to be homogeneous spheres with fixed densities. The relevant die

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f200dc66f201b3a3fc448c5b5754d1ee
https://doi.org/10.1109/tgrs.2017.2726994

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Comparison of measured and computed phase functions of individual tropospheric ice crystals

Autor: Emma Järvinen, Martin Schnaiter, Patrick G. Stegmann, Cameron Tropea

Publikováno v: Journal of Quantitative Spectroscopy and Radiative Transfer. 178:379-389

Airplanes passing the incuda (lat. anvils) regions of tropical cumulonimbi-clouds are at risk of suffering an engine power-loss event and engine damage due to ice ingestion (Mason et al., 2006 [1] ). Research in this field relies on optical measureme

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::58a0f95b504ea793f41b85841ee4238b
https://doi.org/10.1016/j.jqsrt.2015.12.019

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Modeling the single and multiple scattering properties of soot-laden mineral dust aerosols

Autor: Sarah D. Brooks, Patrick G. Stegmann, Guanglang Xu, Ping Yang

Publikováno v: Optics express. 25(24)

Fractal particle morphologies are employed to study the light scattering properties of soot-laden mineral dust aerosols. The applicability of these models is assessed in comparison with measurements and other numerical studies. To quantify the dust-s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::206af4d8209923a08c427f99fd77abe5
https://pubmed.ncbi.nlm.nih.gov/29220980

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Simulation of light scattering from a colloidal droplet using a polarized Monte Carlo method: application to the time-shift technique

Autor: Patrick G. Stegmann, Cameron Tropea, Lingxi Li, Simon Rosenkranz, Walter Schäfer

Publikováno v: Optics Express. 27:36388

This study is devoted to the development and application of a Monte Carlo ray-tracing model to simulate light scattering when a colloid suspension droplet passes through a highly focused Gaussian laser sheet. Within this study, a colloidal suspension

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcbcba1f6892675e5234c41b2a9d1fd3
https://doi.org/10.1364/oe.27.036388

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Influence of low mass-density particles and temperature-dependent refractive index on hyper-spectral forward calculations

Autor: Patrick G. Stegmann, Ping Yang

Publikováno v: Light, Energy and the Environment.

The present work uses the Community Radiative Transfer Model to assess the influence of complex particle shapes, including snowflakes, in hyper-spectral calculations. Also considered will be the temperature-dependence of the refractive-index of ice.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e8d382e1cc80943795203a929f35d574
https://doi.org/10.1364/hise.2016.hm3f.1

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