From the Solar Limb and Out: Results from the Wide-Field EUV Image Campaigns with GOES/SUVI

<p>Traditional approaches to tracking solar outflows for space weather forecasting rely primarily on coronagraph images, which&#160;generally observe the solar corona above a minimum height of about 2.5 solar radii. EUV images have been widely used to&#160;characterize features on the solar disk, but the limited fields of view of most current EUV imagers have prevented their use for&#160;tracking outflows through the inner and middle coronae. A series of off-point campaigns with the GOES&#160;16-18&#160;Solar Ultraviolet&#160;Imager (SUVI) between 2018 and 2022&#160;from three Flight Models&#160;have provided an opportunity to assess the value of extended EUV images for space&#160;weather forecasting applications. These new results demonstrate that wide field-of-view EUV images are useful for characterizing&#160;the early onset of eruptive events and tracking smaller outflow into the solar wind. They also reveal the origins of shocks that are&#160;known to accelerate particles and drive solar energetic particle (SEP) events. Because CMEs generally experience the bulk of their&#160;acceleration below the height of&#160;white light&#160;coronagraphic observations, these images provide information about the origins of these events&#160;that has not been available traditionally. Together with coronagraphic measurements, EUV images provide the continuous views&#160;needed to connect CMEs back to their source regions. Here, we present these new SUVI observations and discuss their potential&#160;use in space weather operations.</p>