Pregled bibliografske jedinice broj: 1022525
Forecasting the Arrival Time of Coronal Mass Ejections: Analysis of the CCMC CME Scoreboard
Forecasting the Arrival Time of Coronal Mass Ejections: Analysis of the CCMC CME Scoreboard // Space weather-the international journal of research and applications, 16 (2018), 9; 1245-1260 doi:10.1029/2018SW001962 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 1022525 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Forecasting the Arrival Time of Coronal Mass Ejections: Analysis of the CCMC CME Scoreboard
Autori
Riley, Pete ; Mays, M. Leila ; Andries, Jesse ; Amerstorfer, Tanja ; Biesecker, Douglas ; Delouille, Veronique ; Dumbović, Mateja ; Feng, Xueshang ; Henley, Edmund ; Linker, Jon A. ; Möstl, Christian ; Nuñez, Marlon ; Pizzo, Vic ; Temmer, Manuela ; Tobiska, W. K. ; Verbeke, C. ; West, Matthew J. ; Zhao, Xinhua
Izvornik
Space weather-the international journal of research and applications (1542-7390) 16
(2018), 9;
1245-1260
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
coronal mass ejections ; interplanetary shocks ; space weather ; forecasts ; models ; Physics - Space Physics
Sažetak
Accurate forecasting of the properties of coronal mass ejections (CMEs) as they approach Earth is now recognized as an important strategic objective for both NOAA and NASA. The time of arrival of such events is a key parameter, one that had been anticipated to be relatively straightforward to constrain. In this study, we analyze forecasts submitted to the Community Coordinated Modeling Center at NASA's Goddard Space Flight Center over the last 6 years to answer the following questions: (1) How well do these models forecast the arrival time of CME-driven shocks? (2) What are the uncertainties associated with these forecasts? (3) Which model(s) perform best? (4) Have the models become more accurate during the past 6 years? We analyze all forecasts made by 32 models from 2013 through mid-2018, and additionally focus on 28 events, all of which were forecasted by six models. We find that the models are generally able to predict CME-shock arrival times—in an average sense—to within ±10 hr, but with standard deviations often exceeding 20 hr. The best performers, on the other hand, maintained a mean error (bias) of -1 hr, a mean absolute error of 13 hr, and a precision (standard deviation) of 15 hr. Finally, there is no evidence that the forecasts have become more accurate during this interval. We discuss the intrinsic simplifications of the various models analyzed, the limitations of this investigation, and suggest possible paths to improve these forecasts in the future.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
