THE SURFACE ENERGY BUDGET IS AN IMPORTANT FACTOR IN THE CLIMATE SYSTEM ESPECIALLY WITH GROWING CONCERNS OF CLIMATE CHANGE. FARINFRARED RADIATION (WITH WAVENUMBERS LESS THAN 600 CM-1) COMPRISES ~50% OF EARTH S TOTAL LONGWAVE RADIATION FLUX AND DIFFERING EMISSIVITY PROFILES BETWEEN ICE SNOW AND WATER IN THIS REGIME LEAD TO STRONG VARIABILITY IN SURFACE LONGWAVE FLUX OVER POLAR SURFACES. DESPITE ITS IMPORTANCE AS AN ARCTIC CLIMATE VARIABLE FAR-IR RADIATION REMAINS POORLY QUANTIFIED AND GLOBAL CIRCULATION MODELS INCORRECTLY REPRESENT IT IN THE SURFACE ENERGY BUDGET. THEREFORE WE PROPOSE TO ANALYZE THE FAR-IR RADIATION BUDGET OVER GREENLAND IN ORDER TO CHARACTERIZE THE TRENDS AND VARIABILITY IN RESPONSE TO CLOUDS SURFACE EMISSIVITY AND ICE MELTING TRENDS. WITHOUT SPECTRALLY RESOLVED FAR-IR OBSERVATIONS AVAILABLE WE WILL UTILIZE THE STATE-OF-THE-ART RRTM_LW MODEL IN CONJUNCTION WITH REANALYSIS DATA FROM THE ECMWF ERA-INTERIM AND MERRA-2 PROJECTS. FURTHERMORE WE PROPOSE USING THE MAXIMUM ENTROPY PRODUCTION ALGORITHM TO IMPROVE THE ACCURACY OF DERIVED SENSIBLE AND LATENT HEAT FLUXES. WE EXPECT TO DERIVE A REALISTIC TIME SERIES OF GREENLAND FAR-IR FLUX THROUGH THESE METHODS WITH VALIDATIONS FROM CERES-EBAF. BY ANALYZING THE TIME SERIES WE PLAN TO IDENTIFY ANOMALOUS FAR- IR FLUXES AND EXAMINING CLOUD OBSERVATIONS FROM CALIPSO AND CLOUDSAT INFER THE CONTRIBUTION OF CLOUDS AND SURFACE EMISSIVITY TO THESE ANOMALIES. ONCE THE TRENDS AND RESPONSES TO ATMOSPHERIC CONSTITUENTS ARE UNDERSTOOD WE WILL EXAMINE FAR-IR RADIATION AS A COMPONENT OF ARCTIC CLIMATE CHANGE. THIS PROCESS WILL INVOLVE THE USE OF RADIATION DATA FROM THE ERA-INTERIM AND MERRA-2 REANALYSES ALONGSIDE GRACE ICE LOSS DATA AS A MEANS TO UNDERSTAND THE RELATIVE CONTRIBUTIONS OF RADIATIVE FLUXES TO GREENLAND ICE MELT. ADDITIONALLY WE WILL ANALYZE THE RESPONSE OF FAR-IR FLUXES TO INCREASED MELTWATER ON THE ICE SHEET SURFACE. THROUGH THIS COMPREHENSIVE STUDY WE EXPECT TO OBTAIN A GREATER UNDERSTANDING OF FAR-IR RADIATION IN POLAR LATITUDES AND THUS ADVANCE KNOWLEDGE OF EARTH AS A SYSTEM TO MEET THE CHALLENGES OF ENVIRONMENTAL CHANGE.