1. OBJECTIVES: WE PROPOSE TO PROVIDE THE COMMUNITY A UNIQUE PRODUCT THE NET RADIANCES OF THE ATOMIC NITROGEN EMISSIONS AT 149.3 NM IN THE THERMOSPHERE FROM THE TIMED/GUVI SPECTROGRAPHIC DATA. THE PRODUCT (2008-PRESENT AND BEYOND THE PERIOD WHEN GUVI IS OPERATED IN SPECTROGRAPHIC MODE) WILL BE PROVIDED AS NETCDF FILES WITH A METADATA DOCUMENTATION AND STORED AT THE TIMED/GUVI WEBSITE (HTTP://GUVITIMED.JHUAPL.EDU/) AND TRANSFERRED TO THE NASA SPACE PHYSICS DATA FACILITY (SPDF) FOR PUBLIC TO USE. THE N-149.3 NM PRODUCT IS BEYOND THE SCOPE OF THE ORIGINAL TIMED/GUVI SCIENCE DATA PRODUCTS. 2. SCIENCE IMPORTANCE THE NET N-149.3 NM RADIANCES REPRESENT THE POPULATION OF ATOMIC NITROGEN (E.G. N(2D) N(4S)) WHICH ARE DIRECTLY RELATED TO THE FUNDAMENTAL PHOTO-CHEMICAL PROCESSES OF N2 O2 AND NO. INITIAL STUDY SHOWS THE N-149.3 NM RADIANCES ARE SIGNIFICANTLY ENHANCED IN THE REGION WITH O/N2 DEPLETION AND NO ENHANCEMENT. THE SIMULTANEOUS SPECIFICATION OF THE NEW NET N-149.3 NM RADIANCE WITH THE EXISTING GUVI DATA PRODUCTS (NET NO BAND RADIANCES AND O/N2 RATIO) WILL FURTHER IMPROVE OUR UNDERSTANDING STORM-TIME DYNAMICS OF THERMOSPHERIC COMPOSITION (NO N2 O2 O/N2) IMPROVING THE SPECIFICATION OF THE RELATED PHOTO-CHEMICAL CROSS SECTIONS AND PROVIDE UNIQUE VALIDATION DATA SOURCES FOR PHYSICS BASED MODELS. THE N-149.3 NM RADIANCE TOGETHER WITH THE NO E BAND RADIANCE MAY HELP TO SOLVE THE CONTROVERSY IN NO PRODUCTION AT SUB-AURORAL LATITUDE (LOCAL PRODUCTION VERSUS TRANSPORT FROM HIGH LATITUDE). THE UNIQUE GUVI NET N-149.3 NM RADIANCE DATA PRODUCT IS ALSO EXPECTED TO ENABLE THE COMMUNITY TO FURTHER TEST OUR ABILITY TO MODEL STORM-TIME RESPONSE OF THE THERMOSPHERE AND THUS IMPROVE THE ACCURACY OF SPACE WEATHER FORECAST AND BENEFIT THE LEO SATELLITE OPERATION THROUGH ACCURATE DRAG ESTIMATION. 3. METHODOLOGY IT IS STRAIGHTFORWARD TO EXTRACT THE NET N -149.3 NM RADIANCE FROM THE TIMED/GUVI SPECTROGRAPH DATA BY SUBTRACTING THE N2 LBHS SPECTRA (MODELED BY MATCHING THE SIMULATED LBH BANDS WITH GUVI OBSERVATIONS IN THE WAVELENGTH RANGES WITH PURE LBH BANDS). THE ASSOCIATED TIME GEOLOCATION AND ERRORS ARE ALSO ESTIMATED AND STORED IN NETCDF FILES WHICH ARE SELF-EXPLAINED AND POPULAR IN THE IONOSPHERE AND THERMOSPHERE RESEARCH COMMUNITIES. 4. RELEVANCE TO NASA GOALS THIS PROPOSAL DIRECTLY ADDRESSES THE GOAL OF 2017 NASA HELIOPHYSICS DATA ENVIRONMENT ENHANCEMENTS PROGRAM BY EXTRACTING NEW SCIENCE DATA FROM EXISTING NASA TIMED/GUVI DATA. THE RESULTING DATASET ALSO SIGNIFICANTLY BENEFITS THE RESEARCHES THAT ADDRESS 2014 NASA S HELIOPHYSICS SCIENCE STRATEGY IMPROVE OUR UNDERSTANDING OF FUNDAMENTAL PHYSICAL PROCESSES IN THE SOLAR SYSTEM FROM THE SUN S INTERIOR TO EARTH S UPPER ATMOSPHERE INTERPLANETARY SPACE AND THE EDGES OF THE HELIOSPHERE AND 2013 HELIOSPHERE DECADAL SURVEY GOAL #2: DETERMINE THE DYNAMICS AND COUPLING OF EARTH S MAGNETOSPHERE IONOSPHERE AND ATMOSPHERE AND THEIR RESPONSE TO SOLAR AND TERRESTRIAL INPUTS .