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Saturday, October 17, 2020 | History

2 edition of Atmospheric transmittance and radiance found in the catalog.

Atmospheric transmittance and radiance

Anthony J. LaRocca

Atmospheric transmittance and radiance

methods of calculation

by Anthony J. LaRocca

  • 36 Want to read
  • 18 Currently reading

Published by Environmental Research Institute of Michigan in Ann Arbor, Mich .
Written in English

    Subjects:
  • Radiative transfer.,
  • Atmospheric radiation.

  • Edition Notes

    StatementAnthony J. La Rocca and Robert E. Turner.
    ContributionsTurner, Robert E., Environmental Research Institute of Michigan. Infrared Information and Analysis Center.
    The Physical Object
    Pagination506 p.8bill. ;
    Number of Pages506
    ID Numbers
    Open LibraryOL18678692M

    Calculating transmittance and spectral radiance: test case; PcModWin FOG settings for aerosol and cloud type selection; Use of the Army vertical structure algorithm with aerosols and clouds/fog Chapter 8. Online shopping from a great selection at Books Store.

    The report is broadly divided into the categories of scattering and absorption, with the greater stress laid on absorption. The first of these is the so-called line-by-line direct integration method, which requires a detailed compilation of the characteristics of individual molecular lines. tion was based on comparisons with homogeneous transmittance measurements, comparisons with transmittance and radiance calculations for model atmospheres made by other authors and comparisons with measured radiances by the HIS interferometer under real atmospheric conditions. The appendices contain the listing of the HARTCODE and the auxiliary.

    The radiance transmittance (Tr) is the ratio of the water-leaving radiance (Lw(0+)) to the sub-surface upwelling radiance (Lu(0-)), which is an important optical parameter for ocean optics and ocean color remote sensing. Historically, a constant value (~) based on theoretical presumptions has been adopted for Tr and is widely used. This optical parameter, however, . Atmospheric path radiance is the key factor in the accuracy of objective radiation measurement. In the traditional radiation character measurements, under the help of the atmospheric observation equipment, MODTRAN and other software likewise, the indeterminacy rate could be around 10~20%, it is highly restricts the measurement accuracy of objective : Song Tao Chang, Nan Zhao, Zhi Yuan Sun, Yao Yu Zhang, Yi Chen.


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Atmospheric transmittance and radiance by Anthony J. LaRocca Download PDF EPUB FB2

Radiance scattered out of the beam along the viewing direction can thus be replaced via a single scattering from the radiance emitted by a neighboring point propagating in a different direction.

The diffuse transmittance therefore depends not just on the atmospheric properties and viewing direction, but also on the angular distribution of. 41 rows  Methods. At the core of a radiative transfer model lies the radiative transfer equation.

A computer code, LOWTRAN, has been developed for calculating the transmittance and background radiance of the earth's atmosphere at moderate spectral resolution (20 cm-1).

The code was derived using a single parameter Atmospheric transmittance and radiance book model for molecular absorption and includes the effects of continuum absorption, molecular scattering, and aerosol by: LOWTRAN 7 is a low-resolution propagation model and computer code for predicting atmospheric transmittance and background radiance from 0 to 50, cm -1 at a resolution of 20 cm.

PDF | On Aug 1,F.X. Kneizys and others published Atmospheric transmittance/radiance: computer code LOWTRAN 5 | Find, read and cite all the research you need on ResearchGate.

The relative contributions of path radiance and image attenuation as a function of sun angle–landscape–observer geometry are further exemplified in Figs. –These images were created using image-processing techniques, described in Chapter 6, that make it possible to isolate the effects of path radiance and atmospheric transmittance on the observed scene.

adshelp[at] The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A. A choice of atmospheric models and aerosol models is provided to the user for any atmospheric slant path.

The LOWTRAN model is described and application of the code is given by examples of atmospheric transmittance and radiance spectra. Comments Cited by: We show calculations of nadir-viewing Earth radiance as observed from a space platform for two standard atmospheres in Fig.

The spectral structure visible in Fig. 1 contains the information on atmospheric composition and temperature as functions of altitude that is used to retrieve vertical profiles from sounding measurements.

We also show. The atmospheric contribution in Eq. (), usually called atmospheric path radiance, comes from scattering by atmospheric gases and aerosols, including multiple scattering between gases and path radiance that comes solely from scattering by atmospheric gas molecules is usually called the Rayleigh radiance, because scattering by molecules is well described by.

Chapter 4 Atmospheric Spectral Radiance Introduction General Comments on Solar and Lunar Calculations in MODTRAN Plotting Options in MODTRAN Calculating Spectra Transmittance and Radiance: Radiance with Scattering Test Case Calculating Spectral Radiance: Radiance with No Thermal Scattering Test Case.

COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle.

Atmospheric transmittance/radiance computer code LOWTRAN 6. Hanscom AFB, Mass: Optical Physics Division, Air Force Geophysics Laboratory, Air Force Systems Command, USAF.

MLA Citation. Kneizys, F. and U.S. Air Force Geophysics Laboratory. Optical Physics Division. and United States. Air Force. Systems Command. The atmospheric contribution in Eq. (), usually called atmospheric path radiance, comes from scattering by atmospheric gases and aerosols, including multiple scattering between gases and aerosols.

The path radiance that comes solely from scattering by atmospheric gas molecules is usually called the Rayleigh radiance, LFile Size: 2MB. FASCOD2 was developed for fast line-by-line calculation of the spectral transmittance and radiance of atmospheric windows in the microwave to near-IR region.

Comparison data are furnished for measured and FASCOD2-calculated background radiance and transmittance in the spectral region /cm and a rotational band of CO2, respectively. CEE Remote Sensing Fundamentals 2 Lab 3: Radiance, Irradiance and Reflectance measurements If Ld is the radiance measured from a perfectly reflective Lambertian standard, then Ed = πLd, and sLd.= procedure will produce consistent results File Size: KB.

Abstract: Atmospheric path radiance is the key factor in the accuracy of objective radiation measurement. In the traditional radiation character measurements, under the help of the atmospheric observation equipment, MODTRAN and other software likewise, the indeterminacy rate could be around 10~20%, it is highly restricts the measurement accuracy of objective.

Transmittance, Atmospheric (also, atmospheric transparency), the capacity of the atmosphere to transmit electromagnetic energy. Atmospheric transmittance is dependent on the air mass penetrated by rays, as well as on the amount of water vapor and dust in the air. It varies for radiations of different wavelengths; the smaller the atmospheric absorption.

The Field Guide to Infrared Optics, Materials, and Radiometry covers all aspects of IR optics, including monochromatic and chromatic optical aberrations as well as important concepts such as depth of focus, depth of field, hyperfocal distance, warm shields, aspheric surfaces, and also provides a comprehensive introduction to the optical, mechanical, and.

Full text of "DTIC ADA Atmospheric Transmittance and Radiance: Methods of Calculation" See other formats. Atmospheric Transmittance/Radiance: Computer Code LOWTRAN 6. Supplement: Program Listings [F.

X. Kneizys] on *FREE* shipping on qualifying offers.Air Mass Computer Program for Atmospheric Transmittance/Radiance Calculation: FSCATM [W.

O. Gallery] on *FREE* shipping on qualifying offers. Air Mass Computer Program for Atmospheric Transmittance/Radiance Calculation: FSCATMAuthor: W. O. Gallery.Edwards, D. P. (). GENLN2: A General Line-by-line Atmospheric Transmittance and Radiance Model.

Version Description and Users Guide (No. NCAR/TN+STR). University Corporation for Atmospheric Research. doi/D6W37T