Results 21 to 30 of about 29,986 (258)

Detection of dimming/brightening in Italy from homogenized all-sky and clear-sky surface solar radiation records and underlying causes (1959–2013) [PDF]

open access: yesAtmospheric Chemistry and Physics, 2016
A dataset of 54 daily Italian downward surface solar radiation (SSR) records has been set up collecting data for the 1959–2013 period. Special emphasis is given to the quality control and the homogenization of the records in order to ensure the ...
V. Manara   +7 more
doaj   +1 more source

Uncertainties of parameterized surface downward clear-sky shortwave and all-sky longwave radiation. [PDF]

open access: yesAtmospheric Chemistry and Physics, 2012
As many environmental models rely on simulating the energy balance at the Earth's surface based on parameterized radiative fluxes, knowledge of the inherent model uncertainties is important.
S. Gubler, S. Gruber, R. S. Purves
doaj   +1 more source

High Turbidity Solis Clear Sky Model: Development and Validation

open access: yesRemote Sensing, 2018
The Solis clear sky model is a spectral scheme based on radiative transfer calculations and the Lambert–Beer relation. Its broadband version is a simplified fast analytical version; it is limited to broadband aerosol optical depths lower than 0.45, which
Pierre Ineichen
doaj   +1 more source

Improving The Accuracy of the Empirical Clear Sky Solar Irradiance Models

open access: yesAnnals of West University of Timisoara: Physics, 2013
This paper is focused on improving the quality of nowcasting solar irradiance by enhancing the clear sky component of the model. A simple linear correction for the average atmospheric transmittance is proposed.
Mares Oana   +2 more
doaj   +1 more source

Long-term analysis of clear-sky new particle formation events and nonevents in Hyytiälä [PDF]

open access: yesAtmospheric Chemistry and Physics, 2017
New particle formation (NPF) events have been observed all around the world and are known to be a major source of atmospheric aerosol particles. Here we combine 20 years of observations in a boreal forest at the SMEAR II station (Station for Measuring ...
L. Dada   +11 more
doaj   +1 more source

The impact of clear-sky biases of land surface temperature on monthly evapotranspiration estimation

open access: yesInternational Journal of Applied Earth Observations and Geoinformation
Remotely sensed land surface temperature (LST) is critical for retrieving evapotranspiration (ET). However, due to cloud contamination, LST is often limited to clear-sky conditions and the differences between clear-sky and all-sky LST will lead to clear ...
Xin Pan   +7 more
doaj   +1 more source

How atmospheric humidity drives the outgoing longwave radiation–surface temperature relationship and inter-model spread

open access: yesEnvironmental Research Letters, 2023
The Earth’s global radiation budget depends critically on the relationship between outgoing longwave radiation (OLR) and surface temperature ( $T_\mathrm{s}$ ).
Jing Feng   +3 more
doaj   +1 more source

Irradiance Nowcasting by Means of Deep-Learning Analysis of Infrared Images

open access: yesForecasting, 2022
This work proposes and evaluates a method for the nowcasting of solar irradiance variability in multiple time horizons, namely 5, 10, and 15 min ahead.
Alessandro Niccolai   +4 more
doaj   +1 more source

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

open access: yesFEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard   +12 more
wiley   +1 more source

Satellite Clear‐Sky Observations Overestimate Surface Urban Heat Islands in Humid Cities

open access: yesGeophysical Research Letters
Satellite‐based thermal infrared (TIR) land surface temperature (LST) is hindered by cloud cover and is applicable solely under clear‐sky conditions for estimating surface urban heat island intensity (SUHII).
Qiquan Yang   +9 more
doaj   +1 more source

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