Results 21 to 30 of about 124,918 (317)

Using Machine Learning Methods to Identify Particle Types from Doppler Lidar Measurements in Iceland

open access: yesRemote Sensing, 2021
Doppler lidars are used worldwide for wind monitoring and recently also for the detection of aerosols. Automatic algorithms that classify the lidar signals retrieved from lidar measurements are very useful for the users.
Shu Yang   +4 more
doaj   +1 more source

South-hemispheric marine aerosol Hg and S isotope compositions reveal different oxidation pathways

open access: yesNational Science Open, 2022
Particle-bound mercury (PBM) records the oxidation of elemental mercury, of which the main oxidation pathways (Br∙/Cl∙/OH∙/O3) remain unclear, especially in the Southern Hemisphere. Here, we present latitudinal covariations of Hg and S-isotopic anomalies
AuYang David   +11 more
doaj   +1 more source

Impact on solar radiation parameters in India during COVID-19 lockdown: a case study

open access: yesInternational Journal of Sustainable Energy, 2021
The current research objective is to explore changes in solar radiation variables across the Indian region during the lock-down period. Global Horizontal Irradiance (GHI), Direct Normal Irradiance (DNI) and Diffuse Horizontal Irradiance (DHI) were ...
S. M. Revathy   +6 more
doaj   +1 more source

Synoptic Situation of 28-31 October 2017 Severe Dust Storm over Iraq

open access: yesAl-Mustansiriyah Journal of Science, 2021
The phenomenon of dust storms occurs in areas that are characterized by drought, and lack of rainfalls. There are many such areas around the world, including the Middle East in general and large parts of Iraq in particular.
Husam T. Majeed, Hawraa Majid Qasim
doaj   +1 more source

Radioactive gaseous-aerosol releases from the WWR-M research reactor [PDF]

open access: yesЯдерна фізика та енергетика, 2023
The radiation impact of the WWR-M research reactor is possible due to the release of radioactive substances into the environment, which are generated during both operation and decommissioning. One of the operator's responsibilities is to take measures to
Yu. M. Lobach, V. M. Shevel
doaj   +1 more source

Compositional Characteristics of Atmospheric Aerosols during a Consecutive High Concentration Episode in Seoul, Korea

open access: yes, 2020
This study focuses on the temporal variation in the compositional characteristics of atmospheric aerosols in Seoul, South Korea, during the consecutive high aerosol concentration episode from 30 December 2013 to 2 January 2014. The temporal variations in
Jeong Eun Kim   +4 more
core   +1 more source

Speciation of Magnesium in Aerosols Using X-ray Absorption Near-Edge Structure Related to Its Contribution to Neutralization Reactions in the Atmosphere

open access: yes, 2021
Aerosols, including mineral dust, are transported from China and Mongolia to Japan, particularly in spring. It has been recognized that calcium (Ca) carbonate is the main Ca species in aerosols, which reacts with acidic species such as sulfuric and ...
Yoshio Takahashi   +2 more
core   +1 more source

Small uncrewed aircraft based microphysical measurements of polar stratus cloud during the Pallas Cloud Experiment 2022 [PDF]

open access: yesEarth System Science Data
A dataset of in situ observations of stratus cloud microphysics was created from measurements performed at the Pallas atmosphere-ecosystem super site during the Pallas Cloud Experiment (PaCE) in autumn 2022. The data were collected using a small uncrewed
J. Girdwood   +4 more
doaj   +1 more source

Sensitivity of radiative fluxes to aerosols in the ALADIN-HIRLAM numerical weather prediction system [PDF]

open access: yes, 2020
The direct radiative effect of aerosols is taken into account in many limited-area numerical weather prediction models using wavelength-dependent aerosol optical depths of a range of aerosol species.
Kristian Pagh Nielsen   +9 more
core   +1 more source

Cloud fraction estimation using random forest classifier on sky images [PDF]

open access: yesAtmospheric Measurement Techniques
Cloud fraction (CF) is an integral aspect of weather and radiation forecasting, but real time monitoring of CF is still inaccurate, expensive and exclusive to commercial sky imagers. Traditional cloud segmentation methods, which often rely on empirically
S. K. Sarangi   +7 more
doaj   +1 more source

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