论文信息 - The Solar Stormwatch CME catalogue: Results from the first space weather citizen science project - 字舞流文

The Solar Stormwatch CME catalogue: Results from the first space weather citizen science project

Solar Stormwatch was the first space weather citizen science project, the aim of which is to identify and track coronal mass ejections (CMEs) observed by the Heliospheric Imagers aboard the STEREO satellites. The project has now been running for approximately 4 years, with input from >16, 000 citizen scientists, resulting in a data set of >38, 000 time-elongation profiles of CME trajectories, observed over 18 preselected position angles. We present our method for reducing this data set into a CME catalogue. The resulting catalogue consists of 144 CMEs over the period January 2007 to February 2010, of which 110 were observed by STEREO-A and 77 were observed by STEREO-B. For each CME, the time-elongation profiles generated by the citizen scientists are averaged into a consensus profile along each position angle that the event was tracked. We consider this catalogue to be unique, being at present the only citizen science-generated CME catalogue, tracking CMEs over an elongation range of 4 ◦ out to a maximum of approximately 70 ◦ . Using single spacecraft fitting techniques, we estimate the speed, direction, solar source region, and latitudinal width of each CME. This shows that at present, the Solar Stormwatch catalogue (which covers only solar minimum years) contains almost exclusively slow CMEs, with a mean speed of approximately 350 km s −1 . The full catalogue is available for public access at www.met.reading. ac.uk/~spate/solarstormwatch. This includes, for each event, the unprocessed time-elongation profiles generated by Solar Stormwatch, the consensus time-elongation profiles, and a set of summary plots, as well as the estimated CME properties.

Chris J. Lintott | Jackie A. Davies | Elisabeth Baeten | Mike Lockwood | Richard A. Harrison | Julia Wilkinson | Steven P. Bamford | Mathew J. Owens | Luke Barnard | Neel P. Savani | N. Waterson | C. Lintott | S. Bamford | Arfon M. Smith | M. Lockwood | R. Simpson | M. Owens | J. Davies | R. Harrison | N. Savani | J. Wilkinson | C. Scott | S. Thomas | S. Crothers | C. J. Scott | Kimberley Tucker-Hood | Simon Thomas | S. R. Crothers | Robert Mark Simpson | J. O'Donnell | F. Romeo | M. Kukula | B. Owens | L. Poeffel | B. Harder | E. Baeten | L. Barnard | Kimberley Tucker-Hood | B. Harder | M. Kukula | N. Waterson | J. O’Donnell | F. Romeo | B. Owens | L. Poeffel

[1] Russell A. Howard,et al. The SOHO/LASCO CME Catalog , 2009 .

[2] R. Howard,et al. Continuous tracking of coronal outflows : Two kinds of coronal mass ejections , 1999 .

[3] P. Lamy,et al. The Large Angle Spectroscopic Coronagraph (LASCO) , 1995 .

[4] Yannick Boursier,et al. ARTEMIS II: A Second-Generation Catalog of LASCO Coronal Mass Ejections Including Mass and Kinetic Energy , 2013 .

[5] C. Lintott,et al. Galaxy Zoo 2: detailed morphological classifications for 304,122 galaxies from the Sloan Digital Sky Survey , 2013, 1308.3496.

[6] N. Lugaz,et al. A SELF-SIMILAR EXPANSION MODEL FOR USE IN SOLAR WIND TRANSIENT PROPAGATION STUDIES , 2012 .

[7] M. Lockwood,et al. A solar storm observed from the Sun to Venus using the STEREO, Venus Express, and MESSENGER spacecraft , 2009 .

[8] T. Howard,et al. Coronal Mass Ejections: Observations , 2012 .

[9] M. Lockwood,et al. First imaging of corotating interaction regions using the STEREO spacecraft , 2008 .

[10] J. Davies,et al. A synoptic view of solar transient evolution in the inner heliosphere using the Heliospheric Imagers on STEREO , 2009 .

[11] J. A. Davies,et al. Speeds and Arrival Times of Solar Transients Approximated by Self-similar Expanding Circular Fronts , 2012, 1202.1299.

[12] M. Lockwood,et al. A survey of gradual solar energetic particle events , 2011 .

[13] N. Gopalswamy,et al. A comparison of coronal mass ejections identified by manual and automatic methods , 2008 .

[14] Christopher J. Davis,et al. A comparison of space weather analysis techniques used to predict the arrival of the Earth‐directed CME and its shockwave launched on 8 April 2010 , 2011 .

[15] Mike Lockwood,et al. Stereoscopic imaging of an Earth‐impacting solar coronal mass ejection: A major milestone for the STEREO mission , 2009 .

[16] Bernard V. Jackson,et al. Solar Mass Ejection Imager (SMEI) observations of coronal mass ejections (CMEs) in the heliosphere , 2006 .

[17] C. Lintott,et al. Observational Tracking of the 2D Structure of Coronal Mass Ejections Between the Sun and 1 AU , 2012, 1503.08774.

[18] P. Lamy,et al. The Large Angle Spectroscopic Coronagraph (LASCO) , 1995 .

[19] J. Davies,et al. The Heliospheric Imagers Onboard the STEREO Mission , 2009 .

[20] Jordan Raddick,et al. Galaxy Zoo: Morphological Classification and Citizen Science , 2011, 1104.5513.

[21] Shadia Rifai Habbal,et al. AUTOMATICALLY DETECTING AND TRACKING CORONAL MASS EJECTIONS. I. SEPARATION OF DYNAMIC AND QUIESCENT COMPONENTS IN CORONAGRAPH IMAGES , 2012 .

[22] W. Gonzalez,et al. Solar and interplanetary causes of very intense geomagnetic storms , 2001 .

[23] Jackie A. Davies,et al. Assessing the Accuracy of CME Speed and Trajectory Estimates from STEREO Observations Through a Comparison of Independent Methods , 2010 .

[24] C. Lintott,et al. Galaxy Zoo: Exploring the Motivations of Citizen Science Volunteers. , 2009, 0909.2925.

[25] C. Lintott,et al. The distribution of interplanetary dust between 0.96 and 1.04 au as inferred from impacts on the STEREO spacecraft observed by the heliospheric imagers , 2011, 1111.4389.

[26] Mike Hapgood,et al. Towards a scientific understanding of the risk from extreme space weather , 2011 .

[27] C. J. Wolfson,et al. Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI) , 2000, SPIE Optics + Photonics.

[28] H. Wechsler,et al. Automatic Detection and Tracking of Coronal Mass Ejections in Coronagraph Time Series , 2008 .

[29] T. Howard,et al. On the autonomous detection of coronal mass ejections in heliospheric imager data , 2012 .

[30] A. B. Galvin,et al. CONNECTING SPEEDS, DIRECTIONS AND ARRIVAL TIMES OF 22 CORONAL MASS EJECTIONS FROM THE SUN TO 1 AU , 2014, 1404.3579.

[31] M. Lockwood,et al. Predicting the arrival of high‐speed solar wind streams at Earth using the STEREO Heliospheric Imagers , 2012 .

[32] L. Burlaga,et al. Heliospheric Images of the Solar Wind at Earth , 2008 .

[33] J. Davies,et al. Deriving solar transient characteristics from single spacecraft STEREO/HI elongation variations: a theoretical assessment of the technique , 2009 .

[34] R. G. Edwards,et al. Extreme space weather: impacts on engineered systems and infrastructure , 2013 .

[35] M. Lockwood,et al. Intermittent release of transients in the slow solar wind: 1. Remote sensing observations , 2010 .

[36] E. Robbrecht,et al. AUTOMATED LASCO CME CATALOG FOR SOLAR CYCLE 23: ARE CMEs SCALE INVARIANT? , 2008, 0810.1252.

[37] Donald V. Reames. The Two Sources of Solar Energetic Particles , 2012 .

[38] J. Borovsky,et al. Differences between CME‐driven storms and CIR‐driven storms , 2006 .

[39] Rose Holley. Many Hands Make Light Work : Public Collaborative OCR Text Correction in Australian Historic Newspapers , 2009 .

[40] Jason P. Byrne,et al. AUTOMATIC DETECTION AND TRACKING OF CORONAL MASS EJECTIONS. II. MULTISCALE FILTERING OF CORONAGRAPH IMAGES , 2012, 1207.6125.

[41] N. Lugaz,et al. Accuracy and Limitations of Fitting and Stereoscopic Methods to Determine the Direction of Coronal Mass Ejections from Heliospheric Imagers Observations , 2010, 1010.1949.