Browsing by Author "Vakkari, Ville"
Now showing items 1-11 of 11
-
Assessment of probabilistic wind forecasts at 100 m above ground level using doppler lidar and weather radar wind profiles
(American Meteorological Society, 2020)Modern society is very dependent on electricity. In the energy sector, the amount of renewable energy is growing, especially wind energy. To keep the electricity network in balance we need to know how much, when, and where ... -
Characterising particulate organic nitrogen at a savannah-grassland region in South Africa
(MDPI, 2019)Although atmospheric organic N compounds are considered to be important, especially in new particle formation and their contribution to brown carbon, these species are not that well understood. This can be partially ... -
Long-term total OH reactivity measurements in a boreal forest
(EGU, 2019)Total hydroxyl radical (OH) reactivity measurements were conducted at the second Station for Measuring Ecosystem–Atmosphere Relations (SMEAR II), a boreal forest site located in Hyytiälä, Finland, from April to July 2016. ... -
Looking for an offshore low-level jet champion among recent reanalyses: a tight race over the Baltic Sea
(MDPI, 2020)With an increasing interest in offshore wind energy, focus has been directed towards large semi-enclosed basins such as the Baltic Sea as potential sites to set up wind turbines. The meteorology of this inland sea in ... -
New particle formation, growth and apparent shrinkage at a rural background site in western Saudi Arabia
(EGU, 2019)Atmospheric aerosols have significant effects on human health and the climate. A large fraction of these aerosols originates from secondary new particle formation (NPF), where atmospheric vapors form small particles that ... -
Observations of ozone formation in southern African savanna and grassland fire plumes
(Elsevier, 2020)Open biomass burning is one of the largest sources of aerosols and reactive trace gases into the atmosphere, having a significant effect on earth's radiative budget and air quality. Biomass burning degrades air quality by ... -
Rapid changes in biomass burning aerosols by atmospheric oxidation
(Wiley, 2014)Primary and secondary aerosol particles originating from biomass burning contribute significantly to the atmospheric aerosol budget and thereby to both direct and indirect radiative forcing. Based on detailed measurements ... -
Reevaluating the contribution of sulfuric acid and the origin of organic compounds in atmospheric nanoparticle growth
(Wiley, 2015)Aerosol particles formed in the atmosphere are important to the Earth's climate system due to their ability to affect cloud properties. At present, little is known about the atmospheric chemistry responsible for the growth ... -
Robust observational constraint of uncertain aerosol processes and emissions in a climate model and the effect on aerosol radiative forcing
(EGU, 2020)The effect of observational constraint on the ranges of uncertain physical and chemical process parameters was explored in a global aerosol–climate model. The study uses 1 million variants of the Hadley Centre General ... -
Root-zone soil moisture variability across African savannas: from pulsed rainfall to land-cover switches
(Wiley, 2020)The main source of soil moisture variability in savanna ecosystems is pulsed rainfall. Rainfall pulsing impacts water‐stress durations, soil moisture switching between wet‐to‐dry and dry‐to‐wet states, and soil moisture ... -
Six-year observations of aerosol optical properties at a southern African grassland savannah site
(Elsevier, 2020)Atmospheric aerosols have a significant effect on earth's radiative budget, particularly on regional scales. This paper presents a ~6 year, in situ, ground level aerosol scattering and absorption dataset, measured at a ...
