First Evidences of Ionospheric Plasma Depletions Observations Using GNSS-R Data from CYGNSS

This work has been partially funded by the Spanish MCIU and EU ERDF project (RTI2018-099008-B-C21/AEI/10.13039/501100011033) “Pioneering Opportunistic Techniques”, grant to “CommSensLab-UPC” Excellence Research Unit Maria de Maeztu (MINECO grant MDM-2016-600), and ESA project AO 1-8862/17/NL/AF/eg “RADIO CLIMATOLOGY MODELS OF THE IONOSPHERE: STATUS AND WAY FORWARD”.