Results 211 to 220 of about 29,986 (258)

Bogong moths navigate using a light-dependent geomagnetic inclination compass

open access: yes
Warrant E   +6 more
europepmc   +1 more source

Clear sky blinks

Applied Optics, 2020
Ice blinks and water skies are brightness variations on the undersides of overcasts that allow ground-based observers to judge the nature of distant surfaces such as water (dark) or ice (bright). The clear sky should also scatter light from distant surfaces that might be visually detectable.
David K, Lynch, Steven C, Richtsmeier
openaire   +2 more sources

From spectral clear sky emissivity to total clear sky emissivity

Solar & Wind Technology, 1989
Abstract From standard and observed atmospheric profiles a simple model to compute the spectral sky emissivity has been built, and compared with Lowtran-6 code calculations. In the present paper, it is analytically integrated. The relations expressing the total emissivity point out a small effect of hygrometry.
X. Berger, J. Bathiebo
openaire   +1 more source

Twilight and Daytime Colors of the Clear Sky

Light and Color in the Open Air, 1993
Several years ago Bohren and Fraser1 asked “How can anyone have the audacity to write about colors of the sky in the year 1985?” Nearly a decade later, writing about sky colors is no less audacious — and no less necessary.
openaire   +2 more sources

An Analytical Model for the Clear-Sky Longwave Feedback

Journal of the Atmospheric Sciences, 2022
Estimates of Earth’s clear-sky longwave feedback from climate models and observations robustly give a value of approximately -2 W/m^2/K, suggesting that this feedback can be estimated from first principles. Here we derive an analytical model for Earth’s clear-sky longwave feedback based on a novel spectral decomposition that splits the feedback into ...
Daniel DB Koll   +2 more
openaire   +1 more source

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