Interannual Variations In The Retreat Of The Nothern Seasonal Cap Of Mars Using Computer Vision. P. J. Acharya1 (Pruthvi1@Yorku.Ca), I. B. Smith1 (Ibsmith@Yorku.Ca), W. Calvin2 (Wcalvin@Unr.Edu),1york University, Toronto, Ontario, Canada, 2nevada University, Reno, Nevada Introduction: One Of The Largest Features On Mars Is The Northern Seasonal Polar Cap (Nspc), With Can Cover Up To 12% Of The Surface Seasonally [1]. The Nspc Condenses Up To 25% Of The Atmosphere During Wintertime And Releases It During Springtime [2], Leading To A Major Change In The Global Atmospheric Pressure And Composition. Intense Atmospheric Activities Are Often Seen Originating Near The Cap’S Edge During Springtime [3,4]. These Activities Have Been Seen To Reach Very Close To The Equator, Indicating A Large Amount Of Material Being Moved In And Out Of The Polar Region. For These Reasons, It’S Critical To Understand The Npsc’S Recession To Understand The Past, Present, And Future Martian Climate. The Focus Of This Work Was To Update And Extend