Observations Of The Mars Year 35 E (Early) Large-Scale
Regional Dust Event
D. M. Kass, A. Kleinböhl, Jet Propulsion Laboratory/California Institute Of Technology, Pasadena, Usa
(David.M.Kass@Jpl.Nasa.Gov), J. Shirley, Torquefx, Simi Valley, Usa, B. A. Cantor, Malin Space Science
System, San Diego, Usa, N. G. Heavens, Space Science Institute, Boulder, Usa And London, Uk.

Introduction:
In Mars Year 35 A Large-Scale Regional Dust Event
Started At Ls ~ 35° And Lasted Until Ls ~ 50°. This Is
During Northern Spring When Interannual Variability
Is Usually Low And Generally Only Local And Small
Regional Dust Events Occur. This Absence Of Large
Dust Events Makes This Season Attractive For Landing
Spacecraft On Mars, So An Unusually Large Dust Event
At This Season Is Of Interest For Forecasting Weather
Conditions For Future Landings. We Designate The
Event As The My 35 E (For Early) Large-Scale Dust
Event To Distinguish It From The Traditional Perihelion
Season A, B And C Events As Well As Late Northern
Summer Z Events [1, 2]. We Use A Combination Of