Updates from the Mauna Loa Solar Observatory

composite image at left combines a coronal disk image
The composite image at left combines a coronal disk image of the Sun (gold) in extreme ultraviolet light from NASA AIA data with NCAR MLSO observations (blue) of a Coronal Mass Ejection (CME) from the MLSO COSMO K-Cor instrument with a NASA space-based coronal image (red) from the LASCO C2 coronagraph.

The Mauna Loa Solar Observatory (MLSO) is one of four ground-based observatories selected by NASA to support the 2019 Heliophysics System Observatory Data Support Program. The unique solar corona observations from MLSO were recognized as providing important support to the solar, space weather, and heliophysics community. MLSO continues to provide new data products such as COSMO K-Cor running average and subtractions images, and has begun providing visualization and analysis tools for interacting with MLSO observations. The first software tools and documentation were released in the summer of 2019. It is a community tool utility package for use with the MLSO Coronal Multi-Channel Polarimeter (CoMP) data that allows the user to quickly select and view images and associated metadata by wavelength and polarization state and to plot the emission line profiles of selected images. See: https://www2.hao.ucar.edu/mlso/CoMP-Utilities.

MLSO K-Cor observations were added to the NASA Helioviewer image visualization tool system in 2019 for general use by the community.

Plots showing the usage of MLSO observations by the community
The plots above show the usage of MLSO observations by the community since October 2017. Above left shows the number of data downloads of MLSO observations by month. There has been a general increase in the number of downloads over the past 2 years. The plot above at right shows the steady increase in the number of new users of MLSO data over the past 2 years. The majority of these new users (53.3%) are from academic and other educational institutes. 37.7% of MLSO new users are from research institutes and 8.9% of new users are individuals or chose not to list an associated institute. Note the latest month of data (Oct 2019) contains a fraction of the total month.