225 citations · 985 across the 32 of their papers we have counts for
32 papers
The Sun's magnetic (Hale) cycle and 27 day recurrences in the geomagnetic index
S. C. Chapman, S. W. McIntosh, R. J. Leamon +1
We construct a new solar cycle phase clock which maps each of the last 18 solar cycles onto a single normalized epoch for the approximately 22 year Hale (magnetic polarity) cycle,…
On Generalized Langevin Dynamics and the Modelling of Global Mean Temperature
Nicholas Watkins, Sandra Chapman, Aleksei Chechkin +3
Climate science employs a hierarchy of models, trading the tractability of simplified energy balance models (EBMs) against the detail of Global Circulation Models. Since the pionee…
Overlapping Magnetic Activity Cycles and the Sunspot Number: Forecasting Sunspot Cycle 25 Amplitude
Scott W. McIntosh, Sandra C. Chapman, Robert J. Leamon +2
The Sun exhibits a well-observed modulation in the number of spots on its disk over a period of about 11 years. From the dawn of modern observational astronomy sunspots have presen…
Timing Terminators: Forecasting Sunspot Cycle 25 Onset
Robert J Leamon, Scott W. McIntosh, Sandra C. Chapman +1
Recent research has demonstrated the existence of a new type of solar event, the "terminator." Unlike the Sun's signature events, flares and Coronal Mass Ejections, the terminator…
A parallel workload has extreme variability in a production environment
R. Henwood, N. W. Watkins, S. C. Chapman +1
Writing data in parallel is a common operation in some computing environments and a good proxy for a number of other parallel processing patterns. The duration of time taken to wri…
A parallel workload has extreme variability
R. Henwood, N. W. Watkins, S. C. Chapman +1
In both high-performance computing (HPC) environments and the public cloud, the duration of time to retrieve or save your results is simultaneously unpredictable and important to y…