The role of polar regions increases in terms of megatrends such as globalization, new
transport routes, demography and use of natural resources consequent effects of regional …

Aerosol particles are essential constituents of the Earth's atmosphere, impacting the earth
radiation balance directly by scattering and absorbing solar radiation, and indirectly by …

The accurate representation of ice particles is essential for both remotely sensed estimates
of clouds and precipitation and numerical models of the atmosphere. As it is typical in radar …

Recent technological advances have demonstrated the feasibility of deploying spaceborne
optical detectors with full polarimetric capabilities. The measurement of all four Stokes …

Radar Doppler spectra measurements are exploited to study a riming event when
precipitating ice from a seeder cloud sediment through a supercooled liquid water (SLW) …

We have developed an algorithm that retrieves the size, number concentration and density
of falling snow from multifrequency radar observations. This work builds on previous studies …

Riming, ie, the accretion and freezing of supercooled liquid water (SLW) on ice particles in
mixed-phase clouds, is an important pathway for precipitation formation. Detecting and …

In this study measurements collected during winters 2013/2014 and 2014/2015 at the
University of Helsinki measurement station in Hyytiälä are used to investigate connections …

According to current estimates, atmospheric new particle formation (NPF) produces a large
fraction of aerosol particles and cloud condensation nuclei in the earth's atmosphere …

At millimeter wavelengths, attenuation by hydrometeors, such as liquid droplets or large
snowflakes, is generally not negligible. When using multifrequency ground-based radar …