Solar and Heliospheric Observatory (SOHO) Charge, Element, and Isotope Analysis System (CELIAS) Solar Extreme-Ultra-Violet Monitor (SEM) 1-day Data

Data Directory: <https://spdf.gsfc.nasa.gov/pub/data/soho/celias/sem_1day/>

This directory contains CDF files with the CELIAS-SEM 1-day data, including Channel 1 through 3 count rates, first order flux (26-34 nm, average of CH1 and CH3), central order flux (0.1 - 50 nm, CH2), and SOHO orbit information, created from the original ASCII files at <https://soho.nascom.nasa.gov/data/archive.html>.

Description of the CELIAS-SEM instrument and scientific scope can be found on CELIAS homepage <http://www.ieap.uni-kiel.de/et/soho/celias/> and SOHO homepage <http://sohowww.nascom.nasa.gov/>. Version 4 Science Product Release Notes are available at <https://lasp.colorado.edu/eve/data_access/eve_data/lasp_soho_sem_data/long/LASP_SOHO_SEM_release_notes_v4.pdf>. 

Copies of the original ASCII files and a copy of LASP_SOHO_SEM_release_notes_v4.pdf are also archived at SPDF at <https://spdf.gsfc.nasa.gov/pub/data/soho/celias/ascii/>.

Please acknowledge the NASA Space Physics Data Facility and the instrument's Principal Investigator for data usage.

Keywords: Solar Physics, Ultraviolet Observations

SPDF data contact: Andriy.Koval@nasa.gov