MIST
Magnetosphere, Ionosphere and Solar-Terrestrial
Latest articles
- 2026 MIST Council Election Results
- Do Solar Energetic Particle events impact lower-atmospheric temperatures on Mars?
- How Can Turbulence Improve Space Weather Forecasts?
- Regression to the mean can explain saturation of geomagnetic storms
- Temporal Variability of Saturn's H2 Dayglow and Northern Aurora Observed by Hisaki and Cassini
Latest news
2026 MIST Council Election Results
It is our pleasure to announce the results of the latest MIST Council Election.
- Samuel Wharton (University of Leicester) is elected for a 3 year term as a MIST Councillor
- Jewel Abbey Relampagos (Lancaster University) is elected for a 1 year term as the MIST Student Representative
In addition, due to concerns from the community regarding the ongoing UKRI/STFC funding situation, MIST Council have also decided to charter Mark Lester (University of Leicester) as an additional councillor to inform and steer the council in matters related to this specific brief, as set out in Article 4.5 of the MIST Charter.
We would like to congratulate everyone on their new roles. The full composition of Council can be found on the MIST website (https://www.mist.ac.uk/community/mist-council). We would like to thank all the candidates for putting themselves forward and everyone who took part in the voting. We received votes from 132 people which represents a turnout of 21.5% of people registered to receive the MIST emailing list.
Finally, MIST Council would like to extend their thanks and gratitude to our outgoing members: Fiona Ball and Georgios Nicolaou. We would also like to say a special thank you to Andy Smith who was co-opted to be on MIST council while Rosie Johnson was on maternity leave, thank you for all of your hard work.
Open Letter Ready For Signatories
Protect MIST Science! Sign the MIST Community Open Letter on the STFC funding cuts!
https://sites.google.com/view/uk-mist-community-open-letter
Statement from MIST Council regarding the STFC Funding Situation
Statement from MIST Council regarding the STFC Funding Situation
MIST Council is deeply concerned by the ongoing STFC funding uncertainty and its impact on our community and beyond.
The current combination of prospective delayed and reduced funding, together with already volatile financial situations at universities across the UK, is placing significant strain on research groups. In some cases, institutions may be unable to support researchers through gaps between projects, increasing precarity across the community and adding significant pressure on early-career researchers.
We are concerned that continued uncertainty risks accelerating a brain drain from the UK, as skilled researchers reconsider their future in a system offering limited stability. The loss of expertise at any career stage would have lasting consequences for UK space science.
What is going on?
For those that are unaware of the situation, it is complex and evolving. We suggest the following sources to get up to speed on the current developments.
https://ras.ac.uk/news-and-press/news/proposed-budget-cuts-catastrophe-uk-astronomy
What are we doing about it?
Behind the scenes, MIST Council is actively engaging with relevant parties to understand the scale of the challenge and to identify constructive ways forward.
- We are seeking seasoned members of the community to join MIST Council on a task force to help develop options and represent the needs of our community. If you would like to be involved, please reach out to us via the MIST Council email (This email address is being protected from spambots. You need JavaScript enabled to view it.) by the end of this week (13th February 2026).
- In addition to the task force, we want to provide an open forum for discussion and collective input among all members of the wider MIST community. We are exploring options and will be in touch as soon as possible with further details.
- We believe in working together in the face of the current challenges and we are collaborating with UKSP and others to strive for a fair and positive outcome for all. We are reaching out to members of the SSAP (Solar System Advisory Panel) to explore the hosting of a community town hall meeting, like the one already being organised by the AAP (Astronomy Advisory Panel), to provide an open forum for discussion and collective input.
What can you do to help?
There are several open letters representing people in various career stages that have been made available to sign. We encourage you to read the relevant letter(s) and to sign them if you support them:
- Fellowship Holders: https://advancedfellows-openletter-stfc.github.io/index.html
- Early Career Researchers: https://ecr-openletter-stfc.github.io/
The Royal Astronomical Society are also urging Fellows to lobby their MPs against the cuts, and have included a template letter that can be used to do so:
https://ras.ac.uk/news-and-press/news/ras-fellows-urged-lobby-against-unprecedented-cuts
MIST Council will continue to advocate for transparency, stability, and funding structures that recognise both the long-term nature of our science and the people who deliver it.
We thank you for your continued support in this period of uncertainty.
Please contact This email address is being protected from spambots. You need JavaScript enabled to view it. if you have further suggestions.
MIST Council
Announcement of New MIST Council 2025
We are very pleased to announce the following members of the community have been elected to MIST Council:
- Gemma Bower (University of Leicester), MIST Councillor
- Tom Elsden (University of St Andrews), MIST Councillor
- Cameron Patterson (Lancaster University), MIST Councillor
- Fiona Ball (University of Southampton), Student Representative
They will begin their terms in July 2025.
We thank outgoing MIST Council members: Maria Walach, Chiara Lazzeri and Emma Woodfield. Andy Smith will remain on council a little longer as a co-opted member to cover Rosie Johnson's maternity leave.
The current composition of Council can be found on our website (https://www.mist.ac.uk/community/mist-council).
Announcement of New MIST Councillors.
We are very pleased to announce the following members of the community have been elected unopposed to MIST Council:
- Rosie Johnson (Aberystwyth University), MIST Councillor
- Matthew Brown (University of Birmingham), MIST Councillor
- Chiara Lazzeri (MSSL, UCL), Student Representative
Rosie, Matthew, and Chiara will begin their terms in July. This will coincide with Jasmine Kaur Sandhu, Beatriz Sanchez-Cano, and Sophie Maguire outgoing as Councillors.
The current composition of Council can be found on our website, and this will be amended in July to reflect this announcement (https://www.mist.ac.uk/community/mist-council).
The Role of Proton Cyclotron Resonance as a Dissipation Mechanism in Solar Wind Turbulence
By Lloyd Woodham, Mullard Space Science Laboratory, University College London, UK
The solar wind contains turbulent fluctuations that are part of a continual cascade of energy from large scales down to smaller scales. At ion-kinetic scales, some of this energy is dissipated, resulting in a steepening in the spectrum of magnetic field fluctuations and heating of the ion velocity distributions, however, the specific mechanisms are still poorly understood. Understanding these mechanisms in the collisionless solar wind plasma is a major outstanding problem in the field of heliophysics research.
We use magnetic field and ion moment data from the MFI and SWE instruments on-board the Wind spacecraft to study the nature of solar wind turbulence at ion-kinetic scales. We analyse the spectral properties of magnetic field fluctuations between 0.1 and 5.5 Hz over 2012 using an automated routine, computing high-resolution 92 s power and magnetic helicity spectra. To ensure the spectral features are physical, we make the first in-flight measurement of the MFI ‘noise-floor’ using tail-lobe crossings of the Earth's magnetosphere during early 2004. We utilise Taylor's hypothesis to Doppler-shift into the spacecraft frequency frame, finding that the spectral break observed at these frequencies is best associated with the proton-cyclotron resonance scale, 1/kc, compared to the proton inertial length di and proton gyroscale ρi. This agreement is strongest when we consider periods where βi,perp ~ 1, and is consistent with a spectral break at di for βi,par « 1 and ρi for βi,perp » 1.
Histograms for 2012 of the estimated helicity onset frequency, fb, versus the three characteristic plasma scales, converted into frequencies using Taylor's hypothesis - fL represents fkc, fdi, and fρi, for each column respectively. The data used are for periods where 0.95 ≥ βi,perp ≥ 1.05. The colour-bar represents the column-normalised number of spectra. The black dashed lines represent fb = fL and similarly, the red dashed lines are fb = fL/ √2 and fb = fL√2, which give the resolution of the wavelet transform about the line fb = fL due to the finite width of the Morlet wavelet in frequency space. We see the best agreement between fb and fkc during these periods.
We also find that the coherent magnetic helicity signature observed at these frequencies is bounded at low frequencies by 1/kc and its absolute value reaches a maximum at ρi. These results hold in both slow and fast wind streams, but with a better correlation in the more Alfvénic fast wind where the helicity signature is strongest. We conclude that these findings are consistent with proton-cyclotron resonance as an important mechanism for dissipation of turbulent energy in the solar wind, occurring at least half the time in our selected interval. However, we do not rule out additional mechanisms.