Results 11 to 20 of about 29,916 (198)

A Cloud‐Free Approach to Modeling Daily Downwelling Longwave Irradiance at Global Scale

open access: yesGeophysical Research Letters, 2023
Parametric modeling of downwelling longwave irradiance under all‐sky conditions (LW↓) typically involves “correcting” a clear‐ (or non‐overcast) sky model estimate using solar‐irradiance‐based proxies of cloud cover in lieu of actual cloud cover given ...
Ryan M. Bright, Stephanie Eisner
doaj   +1 more source

Impact of aerosols and clouds on decadal trends in all-sky solar radiation over the Netherlands (1966–2015) [PDF]

open access: yesAtmospheric Chemistry and Physics, 2017
A 50-year hourly data set of global shortwave radiation, cloudiness and visibility over the Netherlands was used to quantify the contribution of aerosols and clouds to the trend in yearly-averaged all-sky radiation (1.81 ± 1.07 W m−2 decade−1). Yearly-
R. Boers, T. Brandsma, A. P. Siebesma
doaj   +1 more source

Improved Clear Sky Model from In Situ Observations and Spatial Distribution of Aerosol Optical Depth for Satellite-Derived Solar Irradiance over the Korean Peninsula

open access: yesRemote Sensing, 2022
In solar resource assessment, the climatological environment of the target area is objectively quantified by the cloudiness or clear sky index, which is defined as the ratio of global horizontal irradiance to clear sky solar insolation.
Chang Ki Kim   +2 more
doaj   +1 more source

Comparison of Assimilating All-Sky and Clear-Sky Satellite Radiance for Typhoon Chan-Hom and Nangka Forecasts

open access: yesAtmosphere, 2020
The impacts of assimilating all-sky satellite radiance from the Advanced Microwave Scanning Radiometer 2 (AMSR2) on typhoon Chan-hom and Nangka are evaluated over traditional clear-sky radiance assimilation.
Jingnan Wang   +3 more
doaj   +1 more source

A revisiting of the parametrization of downward longwave radiation in summer over the Tibetan Plateau based on high-temporal-resolution measurements [PDF]

open access: yesAtmospheric Chemistry and Physics, 2020
The Tibetan Plateau (TP) is one of the research hot spots in the climate change research due to its unique geographical location and high altitude.
M. Liu   +8 more
doaj   +1 more source

A Simple Method for Converting 1-km Resolution Daily Clear-Sky LST into Real LST

open access: yesRemote Sensing, 2020
Land-surface temperature (LST) plays a key role in the physical processes of surface energy and water balance from local through global scales. The widely used one kilometre resolution daily Moderate Resolution Imaging Spectroradiometer (MODIS) LST ...
Yunfei Zhang   +3 more
doaj   +1 more source

Vapor buoyancy increases clear-sky thermal emission

open access: yesEnvironmental Research: Climate, 2023
The molar mass of H _2 O (18 g mol ^−1 ) is smaller than that of dry air (29 g mol ^−1 ), which makes humid air lighter than dry air with the same temperature and pressure.
Da Yang, Seth D Seidel
doaj   +1 more source

Analysis on the causes of a continuous clear-sky gale event in winter in the Three Gorges Dam Area

open access: yes暴雨灾害, 2022
A continuous clear-sky gale event (hereinafter referred to as "21·1" clear-sky gale in the dam area) occurs in the Three Gorges Dam Area in the middle January of 2021, which seriously affected the navigation safety of the Yangtze River near the dam area.
Yuanyue FAN   +4 more
doaj   +1 more source

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

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