Results 11 to 20 of about 17,886 (205)
The NBS scale of spectral irradiance
Journal of Research of the National Bureau of Standards, 1988 This paper describes the measurement methods and the instrumentation used in the realization and transfer of the NBS scale of spectral irradiance. The basic measurement equation for the irradiance realization is derived. The spectral responsivity function, linearity of response, and “size of source” effect of the spectroradiometer are described.
Walker, James H. +3 more
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Seasonal Patterns in Spectral Irradiance and Leaf UV-A Absorbance Under Forest Canopies. [PDF]
Front Plant Sci, 2019 Plants commonly respond to UV radiation through the accumulation of flavonoids and related phenolic compounds which potentially ameliorate UV-damage to crucial internal structures.
Hartikainen SM +3 more
europepmc +2 more sources
Calculating spectral irradiance indoors [PDF]
, 2016 The spectral composition of the light that reaches any indoor work plane depends on the characteristics of the light sources and the spectral reflectances of the surrounding surfaces due to the multiple reflections experienced by the light rays along their paths from the source to the observation point.
Bará Viñas, Salvador +1 more
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Characteristics of solar-irradiance spectra from measurements, modeling, and theoretical approach
Light: Science & Applications, 2022 An accurate solar-irradiance spectrum is needed as an input to any planetary atmosphere or climate model. Depending on the spectral characteristics of the chosen model, uncertainties in the irradiance may introduce significant differences in atmospheric ...
Gerard Thuillier +4 more
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TILT CORRECTION OF ONBOARD DRONE IRRADIANCE MEASUREMENTS – EVALUATION OF HYPERSPECTRAL METHODS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022 An accurate onboard irradiance measurement on drones is a requirement direct reflectance transformation of aerial images and remote sensing data without use of on-ground reference targets.
J. Suomalainen +6 more
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Comparison of the Lunar Models Using the Hyper-Spectral Imager Observations in Lijiang, China
Remote Sensing, 2020 A lunar observation campaign was conducted using a hyper-spectral imaging spectrometer in Lijiang, China from December 2015 to February 2016. The lunar hyper-spectral images in the visible to near-infrared region (VNIR) have been obtained in different ...
Yang Wang +9 more
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The Flare Irradiance Spectral Model‐Version 2 (FISM2)
Space Weather, 2020 The Flare Irradiance Spectral Model (FISM) is an important tool for estimating solar variability for a myriad of space weather research studies and applications, and FISM Version 2 (FISM2) recently was released.
P. C. Chamberlin +9 more
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Spectral Responses of Melanin to Ultraviolet A Irradiation [PDF]
Journal of Investigative Dermatology, 2004 The purpose of this investigation was to study the ultraviolet A-induced effects on melanin pigmentation both in an in vitro model system and in vivo. Ultraviolet-Vis absorbance spectra of L-3,4-dihydroxyphenylalanine-melanin solutions at different concentrations were measured before and after ultraviolet A exposure (10-120 J per cm2).
Ou-Yang, Hao +2 more
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Intercomparing Solar Spectral Irradiance From SORCE SIM
Earth and Space Science, 2020 We compare solar spectral irradiance (SSI) measurements obtained from the Spectral Irradiance Monitor (SIM) on board the Solar Radiation and Climate Experiment (SORCE), corrected for instrument degradation using three different methods; SIM Version 25 ...
Steffen Mauceri +4 more
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The Spectral Irradiance of the Moon
The Astronomical Journal, 2005 Images of the Moon at 32 wavelengths from 350 to 2450 nm have been obtained from a dedicated observatory during the bright half of each month over a period of several years. The ultimate goal is to develop a spectral radiance model of the Moon with an angular resolution and radiometric accuracy appropriate for calibration of Earth-orbiting spacecraft ...
Hugh H. Kieffer, Thomas C. Stone
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