Further information on cookies can be found in our data protection declaration.
Developed in collaboration with:
Ice nucleating particles (INP) are the source for primary ice formation in clouds, hence their concentration has a critical impact on the temporal and spatial distribution of precipitation as well as a major impact on climate. PINE enables the accurate measurement of INP concentration, thus providing researchers and meteorologists with a unique and valuable insight on the temporal evolution of INP. Alternative technologies do not offer minimal user input automation or the sensitivity to the huge range of atmospheric INP concentrations over a broad temperature range at high time resolution and at conditions relevant for a range of clouds types. In addition, PINE provides information on the overall aerosol concentration.
This important conference will provide a forum for discussion of all aspects of atmospheric ice nucleation and took place in Boston from 10th - 12th January 2020.
PINE enables the accurate measurement of ice nucleating particles (INP) concentration, thus providing researchers and meteorologists with a unique and valuable insight into the temporal evolution of INP.
The instrument aroused strong interest among the participants.
The innovative PINE instrument performed continuous and automated INP measurements at the Karlsruhe Institute of Technology (KIT) during the workshop days. Remote access demonstrated its extraordinary capabilities.
PINE collaboration partners (from left to right): Dr. Ben Murray and Michael Adams - University of Leeds, (UK); Michael Gehring - Bilfinger Noell, Franziska Vogel and Dr. Ottmar Möhler, KIT.
We will present our innovative technologies at:
3rd ATMOSPHERIC ICE NUCLEATION CONFERENCE
10th – 11th January 2020 – Boston, USA
European aerosol Conference EAC 2019
25. – 30 August 2019, Gothenburg
May 6th 2019, Delivery of first PINE
The core element of PINE is an air tight vessel, which can be cooled to a specified temperature. Air is drawn into the chamber through a valve at the top, and pulled through by a pump below.
The pressure within the chamber is then reduced, causing the temperature to drop and an adiabatic expansion to occur. The chamber is temperature controlled, allowing for measurements to be taken between 0 and −60°C. The frost point within the chamber is measured, and the humidity within is controlled to ensure that frost build up does not occur on the walls of the chamber.
Detection occurs by particles being drawn through an Optical Particle Counter (OPC) which records the particle count and aerodynamic particle diameter.
Immersion mode: this will form a cloud within the chamber, as liquid cloud droplets form on the aerosol. If the aerosol is an INP, the water droplet will nucleate and an ice crystal will form and grow to much larger sizes than water droplets.
Super saturation mode: will induce deposition freezing, water vapor will freeze directly onto aerosol particles as the temperature within the chamber decreases. These particles will again be distinct in size from the aerosol particles and hence detectable.