Reflectance and albedo
Web1. jan 2014 · According to a commonly accepted formulation, “Albedo is defined as the ratio of reflected solar shortwave radiation from a surface to that incident upon it” (Strugnell and Lucht 2001).Reflected radiation in the whole solar spectrum is referred namely as shortwave radiation (0.3–5.0 μm). This type of broadband albedo governs the amount of shortwave … WebThe ground albedo is defined as the ratio between downward irradiance and upward irradiance where the latter results from the diffuse reflectance of the Earth's surface. The …
Reflectance and albedo
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WebSurface Albedo Insight into the spectral and angular dependence of surface reflection can be gained by considering a few fundamental principles. To begin, light is reflected at … Webalbedo, fraction of light that is reflected by a body or surface. It is commonly used in astronomy to describe the reflective properties of planets, satellites, and asteroids. It is an …
Web1. feb 2008 · Moreover, while albedo was calculated based on surface reflectance [60], a singlechannel algorithm was used to calculate LST as an input to SEBAL [61]: ... An Automated and Improved Methodology... http://geography.middlebury.edu/data/gg1002/Handouts/ComputingReflectanceFromDN.pdf
Web1. nov 2002 · Spaceborne observations of radiance reflected by the Earth-Atmosphere system provides an effective means to monitor land surface albedo both regionally and globally (Li and Garand, 1994), and... Albedo is the measure of the diffuse reflection of solar radiation out of the total solar radiation and measured on a scale from 0, corresponding to a black body that absorbs all incident radiation, to 1, corresponding to a body that reflects all incident radiation. Surface albedo is defined as the ratio of radiosity Je to the irradiance Ee (flux pe…
Web17. okt 2003 · Albedo ranges from 0.09 to 0.49 and emissivity from 0.88 to 0.99. Shifting sands are the most reflective (0.399 ± 0.054) and least radiative (0.908 ± 0.010) of surfaces while xerolls have the least reflection (0.233 ± 0.054) and the most radiation (0.947 ± 0.090).
Web13. nov 2024 · The online albedo/reflectance re trieval requires the offline prod uced BRDF as input. The BRDF . retrieval relies on an accumulation of TOA reflec tance within a co mposition period. Typically, one ottman sight singing pdfWebBRDF: Bidirectional Reflectance Distribution Function x y z T I source viewing direction surface element normal incident direction (T,I i) (T r,I r) (i, i) Esurface T I ... albedo •Surface appears equally bright from ALL directions! (independent of ) •Surface Radiance : •Commonly used in Vision and Graphics! L I d I n s i d cos . S U T S U ottman sight singingottman tertuliano university of pennsylvaniaWeb17. júl 2024 · Abstract. Ultraviolet (UV) albedo and UV reflectance are defined, compared and contrasted, to explain their roles and place in studies focusing on UV radiation and … ottman sight singing bookWebMODIS Bidirectional Reflectance Distribution Function (BRDF) / Albedo Parameter Overview The Bidirectional Reflectance Distribution Function (BRDF)/Albedo parameters provide: • coefficients for mathematical functions that describe the BRDF of each pixel in the seven MODIS 'Land' bands (1- 7); and ottman owensboro kyWeb8. nov 2016 · So, you could have very high reflectance of low energy "light" - maybe even near 100 % which would be a 1. But since the light striking the surface and reflecting is low energy, the "number" that represents the energy will also be lower. Albedo seems to be the reflective property of an object - it could be applied to planets, or landcover. ottman tree farmWebThe microstructure of the uppermost portions of a melting Arctic sea ice cover has a disproportionately large influence on how incident sunlight is reflected and absorbed in the ice/ocean system. The surface scattering layer (SSL) effectively backscatters solar radiation and keeps the surface albedo of melting ice relatively high compared to ice with the SSL … rock yards tucson