the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Vertical distribution of ice nucleating particles over the boreal forest of Hyytiälä, Finland
Julia Schneider
Janne Lampilahti
Ville Vakkari
Victoria A. Sinclair
Christina J. Williamson
Carlton Xavier
Dmitri Moisseev
Markus Hartmann
Pyry Poutanen
Markus Lampimäki
Markku Kulmala
Tuukka Petäjä
Katrianne Lehtipalo
Erik S. Thomson
Kristina Höhler
Ottmar Möhler
Jonathan Duplissy
Related authors
We present a novel version of an aerosol number size distribution instrument, showcasing its capability to measure particle number concentration and particle number size distribution between 1 and 12 nm. Our results show that the instrument agrees well with existing instrumentation and allows for both the accurate measurement of the smallest particles and overlap with more conventional aerosol number size distribution instruments.
Koop line, predicting the humidity at freezing. However, laboratory measurements suggest that the freezing humidities are above the Koop line, motivating the present study to investigate the influence of different physical parameterizations on the homogeneous freezing with the help of a detailed numerical model.
variantsof the model using an implausibility metric. Despite many compensating effects in the model, the procedure constrains the probability distributions of many parameters, and direct radiative forcing uncertainty is reduced by 34 %.
anomalous supersaturationin conditions similar to the real atmosphere.
warmexperiment. The total number of cyclones did not change with warming and neither did the average strength, but there were more stronger and more weaker storms in the warm experiment. Precipitation associated with the most extreme mid-latitude cyclones increased by up to 50 % and occurred in a more poleward location in the warmer experiment.
Related subject area
Clouds over the Southern Ocean are crucial to Earth's energy balance, but understanding the factors that control them is complex. Our research examines how weather patterns affect tiny particles called cloud condensation nuclei (CCN), which influence cloud properties. Using data from Kennaook / Cape Grim, we found that winter air from Antarctica brings cleaner conditions with lower CCN, while summer patterns from Australia transport more particles. Precipitation also helps reduce CCN in winter.