With the accumulation of the ionospheric radio occultation (IRO) data observed by Global Navigation Satellite System (GNSS) occultation sounder (GNOS) onboard FengYun-3C (FY3C) satellite. it is possible to use GNOS IRO data for ionospheric climatology research. Therefore. this work aims to validate the feasibility of FY3C/GNOS IRO products in climatology research by comparison with th... https://tonerparts.shop/product-category/maintenance-cartridges/