208 citations · 344 across the 9 of their papers we have counts for
9 papers
SIR-HUXt -- a particle filter data assimilation scheme for assimilating CME time-elongation profiles
Luke Barnard, Mathew Owens, Chris Scott +2
We present the development of SIR-HUXt, the integration of a sequential importance resampling (SIR) data assimilation scheme with the HUXt solar wind model. SIR-HUXt is designed to…
Semi-annual, annual and Universal Time variations in the magnetosphere and in geomagnetic activity: 4. Polar Cap motions and origins of the Universal Time effect
Mike Lockwood, Carl Haines, Luke A. Barnard +4
We use the am, an, as and the a-sigma geomagnetic indices to the explore a previously overlooked factor in magnetospheric electrodynamics, namely the inductive effect of diurnal mo…
The Celestial Sign in the Anglo-Saxon Chronicle in the 770s: Insights on Contemporary Solar Activity
Hisashi Hayakawa, F. Richard Stephenson, Yuta Uchikawa +5
The anomalous concentration of radiocarbon in 774/775 attracted intense discussion on its origin, including the possible extreme solar event(s) exceeding any events in observationa…
Space climate and space weather over the past 400 years: 2. Proxy indicators of geomagnetic storm and substorm
Mike Lockwood, Mathew J. Owens, Luke A. Barnard +3
Using the reconstruction of power input to the magnetosphere given in Paper 1 (arXiv:1708.04904), we reconstruct annual means of geomagnetic indices over the past 400 years to with…
Space Climate and Space Weather over the past 400 years: 1. The Power input to the Magnetosphere
Mike Lockwood, Mathew J. Owens, Luke A. Barnard +2
Using information on geomagnetic activity, sunspot numbers and cosmogenic isotopes, supported by historic eclipse images and in conjunction with models, it has been possible to rec…
Tests of Sunspot Number Sequences: 2. Using Geomagnetic and Auroral Data
Mike Lockwood, Mathew J. Owens, Luke A Barnard +3
We compare four sunspot-number data sequences against geomagnetic and terrestrial auroral observations. The comparisons are made for the original SIDC composite of Wolf-Zurich-Inte…