The SOHO LASCO CME Catalog -- Version 2

TL;DR

This paper updates the SOHO LASCO CME catalog to version 2, adding new features like online measurement tools, movies from multiple missions, and thousands of new CME entries, primarily weak and narrow, with consistent statistical properties.

Contribution

The paper introduces version 2 of the CME catalog with new online tools, multi-mission movies, and extensive new CME data, enhancing data accessibility and comprehensiveness.

Findings

Addition of ~3000 new CMEs, mostly weak and narrow.

New features include online measurement tools and multi-mission movies.

Statistical properties remain consistent with previous version.

Abstract

This paper provides an update on the coronal mass ejection (CME) catalog maintained at the CDAW Data Center, NASA Goddard Space Flight Center (https://cdaw.gsfc.nasa.gov/CME_list). This is version 2 (v2) of the Catalog that has been made as the default version as of May 1, 2024. The new features of the Catalog v2 are (i) online measurement tool, (ii) combination JavaScript movies from the STEREO and Solar Dynamics Observatory (SDO) missions, and (iii) insertion of newly identified CMEs for the period 1996 to 2004. The CME identification was revisited resulting in a set of $\sim$3000 new CMEs added to the Catalog. A vast majority of these CMEs are weak and narrow. The resulting statistical properties of CMEs are not significantly different from those reported using version 1.