NAM2019
  • NAM2019
    • Registration
    • Key Dates & Outline Schedule
    • Practical Information
    • Exhibitors
    • Grants & Bursaries
    • Contacts
  • Science
    • Science Programme
    • Parallel Sessions
    • Plenary Talks
    • Community Session
    • Special Lunches
    • Posters
    • Presenter Guidelines
  • Social
    • What's On
    • Welcome Reception
    • RAS Awards Dinner
  • Media
  • Outreach
    • Outreach and Education Day
    • Fringe Event
    • School Visit Day
  • Lancaster
    • Travel
    • Accommodation
    • Childcare
    • Campus Map
    • About Lancaster
    • Code of Conduct
  • NAM2019
    • Registration
    • Key Dates & Outline Schedule
    • Practical Information
    • Exhibitors
    • Grants & Bursaries
    • Contacts
  • Science
    • Science Programme
    • Parallel Sessions
    • Plenary Talks
    • Community Session
    • Special Lunches
    • Posters
    • Presenter Guidelines
  • Social
    • What's On
    • Welcome Reception
    • RAS Awards Dinner
  • Media
  • Outreach
    • Outreach and Education Day
    • Fringe Event
    • School Visit Day
  • Lancaster
    • Travel
    • Accommodation
    • Childcare
    • Campus Map
    • About Lancaster
    • Code of Conduct

Monday

Schedule

id
date time
PM2
17:18
Abstract
Probabilistic driving of radiation belt electrons by ultra-low frequency waves
Monday

Abstract details

id
Probabilistic driving of radiation belt electrons by ultra-low frequency waves
Date Submitted
2019-03-14 12:07:33
Sarah
Bentley
University of Reading
Radiation belt dynamics at Earth and beyond
Talk
S N Bentley, C E J Watt, I J Rae, M J Owens, K Murphy, M Lockwood, J K Sandhu
Twenty-first century life is highly dependent on satellite services, which are at risk from the hazardous radiation belt environment. Ultra-low frequency waves (ULF, 1-20 mHz) driven by the solar wind are responsible for the radial transport and energisation of electrons in Earth's radiation belt, and are therefore essential components of radiation belt modelling. Current models of ULF waves and the resulting radial diffusion are deterministic, producing a single output for each set of input parameters. Meanwhile, weather and climate models increasingly use stochastic parameterisations to account for the effects of sub-scale processes and model uncertainty. To apply stochastic parameterisation to radial diffusion, we require probabilistic forecasts of the power in ULF waves in order to estimate diffusion coefficients.

Our solar wind driven, probabilistic wave map can be used to address the inherent variability in ULF waves and their effects on radiation belt electrons. We compare radial diffusion coefficients from our model and existing parameterisations. By using these probability distributions, we can also investigate the physics underlying ULF wave generation in a novel manner.

RAS Logo

Lancaster University Logo

STFC logo

Science Programme

  • Monday
  • Tuesday
  • Wednesday
  • Thursday
  • Posters

All attendees are expected to show respect and courtesy to other attendees and staff, and to adhere to the NAM Code of Conduct. To report harassment or violation of the code of conduct please click here.

© 2022 Royal Astronomical Society

Login