Plume Blight Visibility Modeling with A Simulated Photograph Technique

Williams, Stefan B.; Treiman, E.; Wecksung, M.

doi:10.1080/00022470.1980.10465928

Cited by 15 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The two terms that contribute to the source function, Jx, represent the singly and multiply scattered radiation. The boundary conditions applicable to eq 4 are (1) that the only downward-directed radiance at the top of the atmosphere is incident sunlight (no diffused downward flux) and (2) that Lambertian (isotropic) reflection occurs at the ground.…”

Section: Introductionmentioning

confidence: 99%

Development of an improved image processing based visibility model

Eldering¹,

Larson²,

Hall³

et al. 1993

Environ. Sci. Technol.

View full text Add to dashboard Cite

An image processing based visibility model is presented in which model calculations are displayed as synthetic color photographs that have the appearance of a smog event. A theoretically based model for light scattering and absorption in a plane parallel atmosphere is used to determine sky color and to provide accurate prediction of skylight addition to the line of sight between the observer and objects in the field of view. Data for testing the visibility model are collected experimentally, including standard photographs of chosen vistas and measurements of the chemical composition and size distributions of the atmospheric aerosol. The model is verified by comparison against radiometer measurements as well as point by point comparison of actual photographs and synthetic images. It is shown that the image processing based visibility model performs well, producing representations of the sky color and objects in the field of view that are close to those seen in actual photographs.

show abstract

Section: Introductionmentioning

confidence: 99%

Development of an improved image processing based visibility model

Eldering¹,

Larson²,

Hall³

et al. 1993

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…The estimate includes 181t generated at the international bridges. 2 TACB developed a State Implementation Plan (SIP) requiring a VOC rollback of 18% of the 1977 emissions to meet the National Ambient Air Quality Standard for O 3 by Dec. 31, 1982. The SIP pointed out "this plan does not purport to demonstrate that the Ozone Standard will be attained everywhere (or anywhere) in Texas."…”

Section: Data and Discussionmentioning

confidence: 99%

“…The simulated photographic technique was first developed at Los Alamos National Laboratory by Williams et al 2 Williams concentrated primarily on modeling the visual appearance of coherent plumes.…”

Section: Cover Photographsmentioning

confidence: 99%

See 1 more Smart Citation

Photographic Simulation Techniques for Visualizing the Effect of Uniform Haze on a Scenic Resource

Malm

Molenar

Chan

1983

Journal of the Air Pollution Control Association

View full text Add to dashboard Cite

“…The role of the biosphere in CCN needs to be investigated as the cloud microphysical processes must be included in the next generation of GCMs. There is evidence that both cloudiness and cloud brightness depend on the number of CCN in the atmosphere (Wigley 1989;Williams et al 1980). Few CCN of continental origin are found in the marine air far from land.…”

Section: Ecosystem Controls On Precipitation Processesmentioning

confidence: 99%

Ecosystem feedbacks on climate at the landscape scale

Hayden

1998

Phil. Trans. R. Soc. Lond. B

109

View full text Add to dashboard Cite

Vegetation controls aspects of climate at all scales. These controls operate through £uxes of mass (water vapour, particulates, trace gases, condensation nuclei, and ice nuclei) and energy (latent and sensible heat, radiative exchanges, and momentum dissipation) between the biosphere and the atmosphere. The role these £uxes play in controlling minimum and maximum temperature, temperature range, rainfall, and precipitation processes are detailed. On the hemispheric scale, the importance of evapotranspiration, vegetation surface roughness, and vegetation albedo in the current generation of atmospheric general circulation models is reviewed. Finally, I assess at the planetary scale the global climate e¡ects of biogenic emissions that are well mixed throughout the troposphere. I show that daily maximum and minimum temperatures are, in part, controlled by the emission of non-methane hydrocarbons and transpired water vapour. In many regions, a substantial fraction of the rainfall arises from upstream evapotranspiration rather than from oceanic evaporation. Biosphere evapotranspiration, surface roughness, and albedo are key controls in the general circulation of the atmosphere: climate models that lack adequate speci¢cations for these biosphere attributes fail. The biosphere modulates climate at all scales.

show abstract

Plume Blight Visibility Modeling with A Simulated Photograph Technique

Cited by 15 publications

References 0 publications

Development of an improved image processing based visibility model

Development of an improved image processing based visibility model

Photographic Simulation Techniques for Visualizing the Effect of Uniform Haze on a Scenic Resource

Ecosystem feedbacks on climate at the landscape scale

Contact Info

Product

Resources

About