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Showing 1 to 20 of 47 for “"Radiative transfer model"”.

  1. Evaluation Of A Microwave Radiative Transfer Model For Calculating Sat

    Thompson, Simonetta

    … "wireless" techniques. Mathematical models, known as Radiative Transfer Models (RTM), are developed to calculate the observed radiance (brightness temperature) seen by the remote sensor. The RTM calculated brightness temperature is a function of fourteen environmental parameters, …

    ucf

  2. Development of an accurate 3D Monte Carlo broadband atmospheric radiative transfer model

    Jones, Alexandra L.University of Illinois at Urbana-Champaign2016

    … from which earth's properties are inferred. Radiative energy from the sun and emitted from the earth and atmosphere is redistributed by clouds in one of their most important roles in the atmosphere. Without accurately representing these interactions we greatly decrease our ability to …

    uiuc Repository record

  3. Development of the polarized Monte Carlo three dimensional radiative transfer model I3RC-POL

    Houghton, AllisonUniversity of Illinois at Urbana-Champaign2014

    … interpret the data from MSPI, polarized radiative transfer models must be used and currently only one dimension versions are available. When emphasizing the need for accurate observations, using assumptions that introduce error to retrievals, such as the plane parallel assumption need to …

    uiuc Repository record

  4. An Improved Microwave Radiative Transfer Model For Ocean Emissivity At Hurricane Force Surface Wind Speed

    EL-Nimri, Salem

    An electromagnetic model for predicting the microwave blackbody emission from the ocean surface under the forcing of strong surface winds in hurricanes is being developed. This ocean emissivity model will be incorporated into a larger radiative transfer model used to infer ocean surface wind speed …

    ucf

  5. Photon pathlengths distributions for cloudy skies : Oxygen A-band measurements and radiative transfer model calculations

    Funk, OliverUniversität Heidelberg

    … Unsicherheiten in den gegenwärtigen Klimamodellen dar. Diese Unsicherheiten werden zum Teil einer vereinfachten Beschreibung von Wolkeninhomogenitäten zugeschrieben. Thema dieser Arbeit ist die Untersuchung des Strahlungstransports durch Betrachtung der Weglängenverteilung solarer …

    heid-diss Repository record

  6. Circumstellar Distribution of Dust Grains Around Proto -Planetary Nebulae: Observational Evidence for Axisymmetry and 2.5-D Radiative Transfer Model Calculations

    Ueta, ToshiyaUniversity of Illinois at Urbana-Champaign2015

    … we present a newly developed multi-dimensional radiative transfer code, 2- D D UST , and its results to derive physical parameters concerning the characteristics of the PPN dust shells without ambiguities arising from the inclination angle effect. Model calculations with a single dust density …

    uiuc Repository record

  7. Passive millimeter-wave retrieval of global precipitation utilizing satellites and a numerical weather prediction model

    Surussavadee, ChinnawatMassachusetts Institute of Technology2007

    … and validates the MM5/TBSCAT/F([lambda]) model, composed of a mesoscale numerical weather prediction (NWP) model (MM5), a two-stream radiative transfer model (TBSCAT), and electromagnetic models for icy hydrometeors (F([lambda])), to be used as a global precipitation ground-truth for …

    mit Repository record

  8. Multiple scattering of microwaves from soil surface and vegetation canopies

    Feldman, Andrew FMassachusetts Institute of Technology2018

    A multiple scattering radiative transfer model is developed for use in global retrieval algorithms of microwave geophysical parameters. This attempts to both improve soil moisture and vegetation attenuation and scattering parameter retrievals under moderate to dense canopy covers and capture the …

    mit Repository record

  9. A Roughness Correction for Aquarius Ocean Brightness Temperature Using the CONAE MicroWave Radiometer

    Hejazin, Yazan

    … speed and direction. The new ocean emissivity radiative transfer model was tuned using one year (2012) of on-orbit combined data from the MWR and the AQ instruments that are collocated in space and time. The roughness correction in this paper is a theoretical Radiative Transfer Model (RTM) …

    ucf

  10. The Observation, Modeling, and Retrieval of Bio-Optical Properties for Coastal Waters of the Southern Chesapeake Bay

    Pan, Xiaoju2019

    … ocean color imagery.</p> <p>A semi-analytical radiative transfer model (PZ06_<em>E<sub>d</sub></em>), based on the analysis of the simulated results of an exact radiative transfer model, <em>Hydrolight</em>® [<em>Mobley</em>, 1994], was developed to estimate the vertical distribution of …

    odu Repository record

  11. The Photosynthetic Action Spectra of the Phytoplankton and Their Role in Governing Spatial and Temporal Distribution: A Numerical Modeling Approach

    Willis, William Morrow2019

    <p>In the present study a numerical modeling approach is employed to examine the role of division spedific differences in photosynthetic action spectra in governing the relative size of diatom and dinoflagellate carbon synthesis along various marine light regime gradients. A radiative transfer …

    odu Repository record

  12. An Investigation Of Sub-Pixel Cloud/clear-Sky Contamination Using Hyper-Spectral AVIRIS Data

    Kaplan, Celil

    … Lastly, simulated AVIRIS radiance values from a radiative transfer model were used to explore the possibility of using AVIRIS data for future aerosol studies.</p>

    nodak Repository record

  13. Derivation of Trace Gas Information combining Differential Optical Absorption Spectroscopy with Radiative Transfer Modelling

    Friedeburg, Christoph vonUniversität Heidelberg

    … techniques like Multi-Axis DOAS with realistic radiative transfer modelling. In this thesis three three-dimensional spherical Monte Carlo based radiative transfer model TRACY is brought to operational status and employed for the interpretation of several own and existing measurements with …

    heid-diss Repository record

  14. Improving estimation of gross primary productivity of terrestrial ecosystems

    Zhang, Qingyuan

    … active radiation (PAR) by chlorophyll using radiative transfer models and daily MODIS data.</p><p>My dissertation has five aspects: (1) to develop a procedure to distinguish atmospherically contaminated observations, snow contaminated observations and contamination-free observations; (2) to …

    unh-thes Repository record

  15. Millimeter-wavelength remote sensing of the atmospheric structure and composition of Venus

    Akins, Alexander BrooksGeorgia Institute of Technology2020

    … planet. To interpret such observations, accurate models for the absorption of the atmospheric constituents of Venus are necessary. The objective of this research has been to further understanding of the millimeter-wavelength spectrum of Venus. Over 400 laboratory measurements have been made of the …

    gatech Repository record

  16. The impact of Arctic cloud water and ice on cloud radiative forcing during the Arctic Summer Cloud-Ocean Study in August 2008

    Maroon, Elizabeth AMassachusetts Institute of Technology2010

    … is needed, especially due to uncertainties in modeling cloud feedbacks. August and September are the months when the Arctic sea surfaces begin to freeze; clouds play an important role in determining when this process begins. In this study, the radiative properties of Arctic stratocumulus are …

    mit Repository record

  17. Nanosatellite Hyperspectral Imaging Performance Modeling for Ocean Color Detection.

    Payne, CadenceMassachusetts Institute of Technology2024

    … are particularly useful for monitoring and modeling phytoplankton, valuable fauna that form the basis of the marine food web, produce an estimated 50-85% of breathable oxygen, and provide the largest and most efficient mechanism for oceanic carbon capture. Monitoring the behavioral response …

    mit Repository record

  18. Evaluating the Use of TROPICS Pathfinder Observations for Lunar Calibration

    Chew, Juliana L.Massachusetts Institute of Technology2023

    … measurements. Given the stability of lunar radiative transfer models in microwave frequencies, lunar vicarious calibration may be a feasible method to detect calibration drifts. In this thesis, we evaluate the use of TROPICS Pathfinder observations for lunar calibration. We develop a lunar …

    mit Repository record

  19. Informing on Crop Water-Use, Stress, and Growth with Integrated Satellite Remote Sensing and Modeling

    Davitt, AaronThe Graduate School and University Center of The City University of New York2024

    … SAR with crop simulation and radiometric models. Sentinel-1A SAR results for staple-crops indicated radar backscatter was strongly influenced by crop vegetation structures, <em>i.e. </em>corn leaves and wheat and rice stems, depending on the timing of observation during the growing season. …

    cuny-grad Repository record

  20. Assessing the accuracy of the MODIS LAI 1-km product in southeastern United States loblolly pine plantations: Accounting for measurement variance from ground to satellite

    Iiames, John Shepherd, Jr.

    … period and is derived from a three-dimensional radiative transfer model driven by an atmosphere corrected surface reflectance product (MOD09), a land cover product (MOD12) and ancillary information on surface characteristics. The United States Environmental Protection Agency (US EPA) initiated …

    unh-thes Repository record

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