Sirvi autori järgi "Toll, Velle"

Air pollution sources leading to anthropogenic glaciation of supercooled liquid-water clouds

Toll, Velle; Keernik, Hannes; Rahu, Jorma (University of Tartu, 2024)

This dataset lists the air pollution sources leading to anthropogenic glaciation of supercooled liquid-water clouds. The glaciation events were identified in Terra MODIS data.

Anthropogenic aerosol impacts on clouds from SEVIRI satellite data

Rahu, Jorma; Toll, Velle (2021-05)

Anthropogenic aerosols offset an unknown fraction of greenhouse gas warming. We use geostationary satellite data to analyse continental polluted cloud tracks originating from isolated heavy industrial pollution sources in ...

GOES ABI satellite data to study anthropogenic glaciation of supercooled liquid-water clouds downwind of industrial air pollution hot spots

Rahu, Jorma; Post, Piia; Toll, Velle (University of Tartu, 2024)

The dataset contains geographical locations and datetimes of occurrence for the events of anthropogenic glaciation of supercooled liquid-water clouds identified in GOES ABI satellite data. Moreover, Python code used for ...

Ground-based precipitation radar data to study glaciation of supercooled liquid-water clouds downwind of anthropogenic air pollution hot spots

Rahu, Jorma; Voormansik, Tanel; Michelson, Daniel; Hung, Emma; Donaldson, Norman; Toll, Velle (University of Tartu, 2024)

Ground-based precipitation radar datasets (two sites in Canada) were used to study the glaciation of supercooled liquid-water clouds downwind anthropogenic air pollution sources. Weather radar data is from two radar ...

Hole punch clouds near Moscow Domodedovo airport

Keernik, Hannes; Toll, Velle (University of Tartu, 2024)

We used Terra MODIS satellite data to study hole punch clouds near Moscow Domodedovo airport (55.408611 N 37.906111 E).

Integrated high-resolution dataset of Estonian precipitation 2018-2019

Rahu, Jorma; Voormansik, Tanel; Toll, Velle; Post, Piia (2020-12)

Kaugseire jätkusuutliku rakendamise kava

Noorma, Anu; Lang, Mait; Alikas, Krista; Jakobson, Liisi; Olesk, Aire; Kutser, Tiit; Post, Piia; Toll, Velle; Uiboupin, Rivo; Sipelgas, Liis; Raudsepp, Urmas; Rikka, Sander; Oja, Tõnu; Sagris, Valentina; Puust, Raido; Liibusk, Aive; Sepp, Kalev; Järveoja, Mihkel; Voormansik, Kaupo (2020)

Kaugseire jätkusuutliku rakendamise kava koostamise eesmärgiks oli võimaluste pakkumine kaugseireandmete kasutamise ja uute rakenduste väljatöötamise abil kaasa aidata avaliku sektori asutuste ees seisvate ülesannete ...

Large-scale polluted cloud tracks

Trofimov, Heido; Toll, Velle (2020-05-15)

Polluted cloud tracks identified in MODIS satellite data.

Lifetime of anthropogenic aerosol perturbations on clouds seen from geostationary SEVIRI satellite data

Rahu, Jorma; Toll, Velle (University of Tartu, Institute of Physics, 2023)

The impacts of anthropogenic aerosols on clouds are the most uncertain drivers of anthropogenic climate forcing. Ship-track-like strong anthropogenic cloud perturbations can help reduce these uncertainties. Using geostationary ...

Meteorological conditions characteristic of anthropogenic glaciation of supercooled liquid-water clouds and of anthropogenic CCN perturbations on clouds

Keernik, Hannes; Rahu, Jorma; Toll, Velle (University of Tartu, 2024)

We used ERA5 atmospheric reanalysis data to characterise the meteorological conditions characteristic of anthropogenic glaciation of supercooled liquid-water clouds and of cloud perturbations induced by anthropogenic cloud ...