spectral irradiance
Study of Plant Cultivation Using a Light Emitting Diode Illumination System to Control the Spectral Irradiance Distribution
... In plant cultivation, the number of photons is more important than the light energy from the chemical reactions that occur during photosynthesis. In addi- tion, the blue and red photon flux (B/R) ratio is an important ...
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Extreme ultraviolet (EUV) solar spectral irradiance (SSI) for ionospheric application – history and contemporary state-of-art
... Abstract. After a historical survey of space related EUV measurements in Germany and the role of Karl Rawer in pur- suing this work, we describe present developments in EUV spectroscopy and provide a brief outlook on ...
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Extreme ultraviolet spectral irradiance measurements since 1946
... EUV irradiance on short-, medium-, and long- term ...solar spectral irradiance (SSI) are promising accuracy levels of about 5 % and ...a spectral terrestrial irradiance camera (STI-Cam) ...
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Influence of light-absorbing particles on snow spectral irradiance profiles
... on spectral irradiance profile (SIP) measurements which makes it possible to identify the radiative impact of LAPs on vis- ible light extinction in homogeneous layers of the snow- ...26 spectral ...
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Estimating spectral irradiance from measurements in seven spectral bands
... global irradiance (over the VNIR wavelengths) from measurements obtained with a calibrated seven-band radiometer, and empirically derived slope ...the spectral irradiance collected with the INSPIRE ...
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Retrieving vertical ozone profiles from measurements of global spectral irradiance
... Abstract. A new method is presented to determine verti- cal ozone profiles from measurements of spectral global (di- rect Sun plus upper hemisphere) irradiance in the ultraviolet. The method is similar to ...
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Direct comparison between the angular distributions of the erythemal and eye-damaging UV irradiances: a pilot study
... of spectral UV radiation have been oriented with respect to the horizontal plane or in a plane directed towards the sun (sun-normal), with the irradiance weighted against action spectra formulated ...
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Ambient Light and Phototherapy Conditions of Eight Neonatal Care Units: A Summary Report
... spectral irradiance at 460 nm and illuminance data were obtained at each infant location used in the phototherapy study, at the approximate height of the upper surface of an infant in a [r] ...
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The high-resolution extraterrestrial solar spectrum (QASUMEFTS) determined from ground-based solar irradiance measurements
... solar spectral irradiance (SSI) over the wavelength range from 300 to 500 nm using the Langley-plot tech- ...primary spectral irradiance standard of the Physikalisch- Technische Bundesanstalt ...
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Validation of Spectral and Broadband UV B (290 325 nm) Irradiance for Canada
... UV-B irradiance (290 - 325 nm) to reach the earth’s surface with possible detrimental biological ...stations, irradiance models are useful tools for estimating irradiances where measurements are not ...of ...
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The Photic Environment of a Salmontd Nursery Lake
... To assess the amount of light available for stimulation of salmonid photoreceptors, the spectral irradiance values obtained were corrected for absorption of the four pigments found in ju[r] ...
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Radiative effects of the cloudy atmosphere from ground and satellite based observations
... of spectral irradiance, latent and sensible heat fluxes, humidity and temperature profiles, water vapour and liquid water path, aerosol optical thickness and vertical profiles of aerosol optical thickness, ...
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Crepuscular and nocturnal illumination and its effects on color perception by the nocturnal hawkmoth Deilephila elpenor
... An estimate of the variability of daylight and civil twilight spectra (to compare with the variability during twilight and night) was obtained from 2395 daylight, 254 civil twilight and 220 forest measurements of ...
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Aerosol single scattering albedo retrieved from ground-based measurements in the UV and visible region
... diffuse spectral irradiance measurements per- formed by a spectroradiometer have been used with model calculations in order to determine the SSA in the UV- visible spectral range in ...diffuse ...
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Advancing the understanding of the Sun–Earth interaction—the Climate and Weather of the Sun–Earth System (CAWSES) II program
... The CAWSES II program has been aimed at studying the coupling processes involved in the solar–terrestrial system, the energy inputs to the Earth, the responses of Geospace, as well as the responses of the middle atmos- ...
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Evaluation of the different levels of variability in the underwater light field of a shallow estuary
... underwater irradiance, which has not been shown in the measurements presented so far, occurs during periods of ice ...the spectral irradiance composition under ...
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Ground level insolation in the UV B spectral region : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Physics at Massey University
... Total integrated irradiance of channel n after weighting of the incident spectral irradiance by the normalised spectral sensitivity of that channel ... Maximum spectral irradiance allowa[r] ...
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Design and Evaluation of a Stepped Diaphragm Intensity Scale Graphic Arts Sensitometer
... PAGE# SECTION FOUR General Conditions Measurement of Measurement Effect of 53 SENSITOMETER EVALUATION - of Sensitometric Test of Irradiance Versus Step 54 54 Spectral Irradiance Number A[r] ...
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Estimating the irradiance spectrum from measurements in a limited number of spectral bands
... predict the spectral irradiance at exactly the same instant that the main spectroradiometer measures the target spectrum. An intercalibration procedure would still be necessary, but this would be easier to ...
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Above-cloud aerosol radiative effects based on ORACLES 2016 and ORACLES 2017 aircraft experiments
... full spectral range from 350 to 2100 nm. The SSFR mea- sures downward spectral irradiance (F λ ↓ ) from a zenith light collector mounted on a stabilizing platform on the upper fuselage and upward ...
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