A New Method For Calculating Solar Irradiance At Mars. I. De Oliveira, Max Planck Institute For Solar System Research, GöTtingen, Germany (Oliveira@Mps.Mpg.De), Institut FüR Astrophysik, Georg-August-UniversitäT GöTtingen, GöTtingen, Germany, A. I. Shapiro, K. Sowmya, A. Medvedev, Max Planck Institute For Solar System Research, GöTtingen, Germany, N.-E. NèMec, Institut FüR Astrophysik, Georg-August-UniversitäT GöTtingen, GöTtingen, Germany, L. Gizon, Max Planck Institute For Solar System Research, GöTtingen, Germany, Institut FüR Astrophysik, Georg-August-UniversitäT GöTtingen, GöTtingen, Germany, Center For Space Science, New York University Abu Dhabi, Abu Dhabi, Uae. Introduction Solar Irradiance Is An Important Source Of Energy For Planetary Atmospheres. This Quantity Is, However, Mainly Measured From The Vantage Point Of Earth. Recently, We Have Been Provided With Measurements Of Extreme Ultraviolet Solar Radiation At Mars, Determined By The Extreme Ultraviolet Monitor (Euvm, Eparvier Et Al. 2015), Onboard The Mars Atmosphere And Volatile Evolution (Maven) Mission, Which Is In Orbit Of Mars Since September, 2014. Several Studies Used Measurements Of Irradiance From Earth To Estimate The Irradiance At Mars (E.G. Peter Et Al. 2014; Ramstad Et Al. 2015). This Estimation Can Be