Latest news

CHAMOS scientists in a PhD review panel

Esa and Pekka were members of a PhD review panel at the Stockholm University, Department of Meteorology and Bolin Centre for Climate research. The candidate, K. Hendrickx, defended well and it was our pleasure to accept his thesis entitled Solar Forcing of Nitric Oxide in the Upper Atmosphere. Congratulations, Koen! Access the thesis here.

HEPPA-SOLARIS Workshop at Virginia Tech

Pekka, Craig, and Esa in the Scientific Organising Committee for the 7th International HEPPA-SOLARIS Workshop. The meeting will be held in Roanoke, VA, USA, on 11-15 June, 2018, with a very much CHAMOS-related scope: Influences of solar radiation and energetic particle precipitation on the atmosphere and climate. More information here.

CHAMOS scientists at SGO Observatory Days

Thomas organises the SGO Observatory Days in Sodankylä on 10-12 January. The SGO locals (incl. Esa, Antti, Jia) attended, of course, as well as Shin, Carl-Fredrik and Pekka. Conditions: true winter wonderland with stars and aurora visible! See the meeting web page here.

New positions of FMI CHAMOS team

Johanna is now the Head of the FMI Earth Observations Research Unit, and Pekka becomes the Head of the FMI Atmospheric Remote Sensing Group. Congratulations to both! Read the unit/group descriptions here.

CHAMOS PhD defence at FMI

Sanna-Mari Päivärinta successfully defended her PhD thesis entitled Roles of Sudden Stratospheric Warming Events and Energetic Particle Precipitation in the Polar Middle Atmosphere: Odd Nitrogen and Ozone. That counts to two CHAMOS doctors in 2017. Congratulations, Sanna! Download the thesis from here.


Annika, Pekka, and Max participated in the SOLARIS-HEPPA working group meeting in Paris focusing on detection of solar signals in observations and simulations. Link to the meeting www.

CHAMOS workshop in Helsinki

The CHAMOS workshop 2017 was held on 30 Oct - 3 Nov at the Finnish Meteorological Institute. We had five nice days of intense collaboration, discussions, and presentations. Official group photograph is here.

Emma Bland joins CHAMOS

Emma joins the UNIS group to work on electron density and D-region absorption as higher-level data products from the SuperDARN radars. Welcome!

CHAMOS PhD defence at SGO

Maxime Grandin successfully defended his PhD thesis entitled Multi-instrument and modelling studies of ionospheres at Earth and Mars. All well, we have another CHAMOS doctor. Congratulations, Maxime! See the SGO blog here.

Jia Jia joins CHAMOS

Jia joins the SGO group to work on the MeMO project led by Thomas. Previously working with the SCIAMACHY instrument in Germany, she now joins a team building instruments to measure polar mesospheric ozone from the ground. Welcome!

Erkka visited FMI

Erkka spent three weeks of August at FMI in Helsinki, working with Pekka on WACCM-D ionospheric simulations and comparison against ground-based observations of cosmic radio noise absorption during solar proton events.

Contribution to the CMIP6 solar forcing

Pekka, Craig, Mark, Monika, Annika, and Max are among the authors of the CMIP6 solar forcing paper, now published in the special issue Coupled Model Intercomparison Project Phase 6 (CMIP6) Experimental Design and Organization. Our contribution is the medium-energy electron precipitation from the outer radiation belt. Access the paper here.

EISCAT_3D construction given green light!

EISCAT_3D, the next generation radar system gets go-ahead for construction. The scientific aim is to understand the effect of solar storms and space weather on the upper atmosphere in the Arctic. More about the good news here!

Annika moves to Otago

Annika has left FMI to take a new position as Senior Lecturer at the University of Otago. We expect that this will only strengthen the CHAMOS collaboration. Congratulations, Annika!

Pulsating aurora meeting at ISEE

Esa and Antti visited ISEE to discuss the status of our plans for pulsating aurora studies and publications with Shin and Shinji. Check out our latest joint JGR publication here.

CHAMOS workshop in Helsinki, Finland

The annual CHAMOS team workshop will be held in Helsinki, Finland from 30 October to 3 November, 2017. The plan is to have five days of intensive collaboration, this time in an urban environment. See you there!

New project to measure all-important mesospheric ozone!

The Thule institute of the University of Oulu has granted a four year funding for the MeMO project. The project is led by Thomas with many CHAMOS people in the team. The idea is to measure mesospheric ozone using a low-cost ground-based instrument, based on satellite TV receivers operation at 11 GHz. The funding covers a post-doc and two PhD students for 2017-2021, and includes also building of instruments.

EEP meeting at BAS

Niilo, Max, Pekka, and Craig visited Mark and Annika at the British Antarctic Survey. Three days of collaboration on energetic electron precipitation and its atmospheric and climate effects was combined with an afternoon walk around the historic colleges of the University of Cambridge. See a group photo here.

Esa and Pekka visited Nagoya University

Esa and Pekka visited Yoshi, Shin, Shinji, and Antti at ISEE. We all participated in the annual Pulsating Aurora Workshop and discussed our joint research, especially related to the first coordinated campaign of ERG satellite (now named ARASE) observations and ground-based ionospheric measurements.

ERG satellite launch successful

JAXA has successfully launched the ERG satellite to orbit! Important to CHAMOS, measurements of energetic electrons can now be made using the Plasma Particle Experiment Suite (PPE) which has 62 energy channels in the range of 10 eV to 20 MeV. Congratulations to the ISEE ERG team! More information about the ERG mission.

CHAMOS workshop in Luosto, Lapland

Amazing Luosto provided perfect conditions for the 2016 CHAMOS workshop. Our week of intensive hands-on collaboration, discussions, and presentations was again very successful. Our group photograph can be seen here.

Center of Excellence first-round success

SGO and FMI are members of the 3DGeoSpace consortium, with Esa leading. Our proposal was selected for the second round in the Center of Excellence call by the Academy of Finland! A lot of work is now needed to write a full application. We can do it!

CHAMOS workshop in Luosto, Lapland

The annual CHAMOS team workshop will be held again in Luosto, Sodankylä, Finland from 28 November to 2 December, 2016. The plan is to have five days of intensive collaboration in a remote log cabin, see you there!

A paper on long-term modeling of electron precipitation

Max, Annika, Mark, Craig, and Pekka published a model for 30-1000 keV radiation belt driven electron precipitation, designed for calculations of decadal time series of atmospheric ionization. The paper is part of the special section Energetic Electron Loss and its Impacts on the Atmosphere. Access the paper.

A paper on pulsating aurora published

Esa, Antti, Pekka, Yoshizumi, Shin-Ichiro, and Shinjin published a paper on mesospheric ozone depletion associated with pulsating aurora. It is part of the special section Energetic Electron Loss and its Impacts on the Atmosphere. Access the paper here.

Antti at Nagoya University

Antti has started a 6-month Designated Associate Professorship in Institute for Space-Earth Environmental Research (ISEE) at Nagoya University! The scope of the visit relates closely to the CHAMOS science.

A book chapter on radiation belts electrons, polar atmosphere and climate

Mark, Craig, Monika, Annika and Pekka have written a chapter called Linkages Between the Radiation Belts, Polar Atmosphere and Climate: Electron Precipitation Through Wave Particle Interactions, which part of the book Waves, Particles, and Storms in Geospace. Access the book.


Pekka, Craig, Esa, Monika, Niilo, Antti, Erkki, Johanna, Mark, and Shin participated in the 6th International HEPPA-SOLARIS Workshop in Helsinki, Finland, on 13-17 June, 2016. Topic: Influences of solar radiation and energetic particle precipitation on the atmosphere and climate. More information here.