Space Climate 7 Meeting Abstract
New homogeneous dataset of solar EUV synoptic maps from SOHO/EIT and SDO/AIA
Amr Hamada (Space Climate Research Unit, Oulu University)
Timo Asikainen- Space Climate Research Unit, Oulu University Kalevi Mursula- Space Climate Research Unit, Oulu University
Solar synoptic maps have been constructed for many decades and are routinely used to display the distribution of various physical quantities across the entire solar surface. They give a quick “synoptic “overview of the global distribution of the studied parameter on the solar surface. Here we present a new database of solar EUV synoptic maps based on full-disk observations from three wavelengths from Solar and Heliospheric Observatory/Extreme ultraviolet Imaging Telescope (SOHO/EIT) and Solar Dynamics Observatory/Atmospheric Imaging Assembly (SDO/AIA). We have homogenized the entire dataset by scaling the SOHO/EIT and SDO/AIA maps to the same level. This combined set of synoptic maps provides a systematic and homogenous record of the entire solar surface covering nearly two solar cycles (SC23 and SC24) from 1996 to 2018. We also discuss the automated algorithm to detect coronal holes based on the EUV observations developed by Hamada et.al. (2018).
Mode of presentation: oral (Need to be confirmed by the SOC)