Variability of Upstream Proton Cyclotron Wave Properties and Occurrence at Mars observed by MAVEN

The MAVEN mission is supported by NASA through the Mars Scout program. O. M. R. is supported by CRESST II (Center for Research and Exploration in Space Sciences & Technology) and the University of Maryland, College Park. N. R. is an Assistant Research Scientist at NASA Goddard Space Flight Center and the University of Maryland, Baltimore County hired through a cooperative agreement with CRESST II. The work by C. M. is also supported by the French Space Agency CNES. MAVEN data are publicly available through the Planetary Data System (https://pds-ppi.igpp.ucla.edu/index.jsp).