Details:

Journal Title:
Space Weather-the International Journal of Research and Applications
Personal Author:
Riley, Pete ; Mays, M. Leila ; Andries, Jesse ; Amerstorfer, Tanja ; Biesecker, Douglas ; ... More +
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 Less -
NOAA Program & Office:
NWS (National Weather Service) ; SWPC (Space Weather Prediction Center) ; CIRES (Cooperative Institute for Research in Environmental Sciences)
NWS (National Weather Service) ; SWPC (Space Weather Prediction Center) ; CIRES (Cooperative Institute for Research in Environmental Sciences) Less -
Description:
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 6years 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 timesin an average senseto 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.
Source:
Space Weather-the International Journal of Research and Applications, 16(9), 1245-1260.
DOI:
https://doi.org/10.1029/2018sw001962
Document Type:
Journal Article
Rights Information:
Other
Compliance:
Submitted
Main Document Checksum:
[+]
urn:sha256:2d659d4743577ae78f5a918d3f935a1411c82deaf0aef670172c06ddfd76e415
Download URL:
https://repository.library.noaa.gov/view/noaa/21805/noaa_21805_DS1.pdf
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