IGF::OT::IGF DEVELOPING RETRIEVAL ALGORITHMS FOR NH3 AND CO FROM NPP CRIS MEASUREMENTS. AMMONIA (NH3) AND C…

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IGF::OT::IGF DEVELOPING RETRIEVAL ALGORITHMS FOR NH3 AND CO FROM NPP CRIS MEASUREMENTS. AMMONIA (NH3) AND CARBON MONOXIDE (CO) PLAY KEY ROLES IN ATMOSPHERIC CHEMISTRY: NH3 AS PART OF THE NITROGEN CYCLE AND CO AS A PRECURSOR FOR OZONE AND CARBON DIOXIDE. CONTINUING INDUSTRIALIZATION ACROSS THE GLOBE IS ALTERING THE SOURCE INTENSITY AND DISTRIBUTION OF THESE GASES BOTH DIRECTLY AND THROUGH TEMPERATURE AND MOISTURE ADJUSTMENTS DUE TO CLIMATE CHANGE. IN TURN THESE SPECIES ALSO AFFECT THE CLIMATE: NH3 IS AN IMPORTANT SOURCE OF PM2.5 AEROSOLS THAT HAVE A SMALL BUT HIGHLY UNCERTAIN RADIATIVE EFFECT. CO IS ESTIMATED TO HAVE AN INDIRECT FORCING OF 0.2 W/M2. FEEDBACKS ASSOCIATED WITH CLIMATE CHANGE WILL MODULATE THE EFFECT NH3 AND CO HAVE ON ATMOSPHERIC CHEMISTRY, AIR QUALITY AND THE CLIMATE ITSELF. BOTH SPECIES ARE HIGHLY VARIABLE IN SPACE AND TIME NH3 MORE SO THAN CO AND IT IS DIFFICULT TO PREDICT FUTURE EMISSIONS BASED ON THE CURRENT DATABASES, WHICH ARE SPARSE OVER MUCH OF THE EARTH. NASA EOS INSTRUMENTS LIKE TES, MOPITT, AND AIRS HAVE PROVIDED A WEALTH OF INFORMATION ON THE DISTRIBUTION OF THESE GASES, AND SHOWN THAT CO LEVELS ARE IS DECREASING SIGNIFICANTLY. HOWEVER, THEY ARE WELL PAST THEIR DESIGN LIFE AND SO THE FUTURE OF THESE CRITICAL NASA EOS RECORDS IS ENDANGERED. THE CRIS INSTRUMENTS ON THE SUOMI NPP SATELLITE AND ON THE FUTURE JPSS PLATFORMS HAVE THE POTENTIAL TO MONITOR THESE SPECIES ACROSS THE GLOBE OVER MANY YEARS ACCURATELY AND CONSISTENTLY. OUR PROPOSED PROJECT WILL DEVELOP THE ALGORITHMS AND SOFTWARE TO RETRIEVE NH3 AND CO BASED ON THE OPTIMAL ESTIMATION APPROACH AND CONSTRAINTS THAT WE ADOPTED FOR TES NH3 AND MOPITT CO. THIS WILL ENABLE NASA TO CREATE CONSISTENT EXTENDED NH3 AND CO DATA RECORDS THAT WILL PROVIDE MODELERS WITH THE INFORMATION NEEDED FOR A BETTER UNDERSTANDING OF THE PROCESSES IN WHICH EACH ARE INVOLVED. THIS IN TURN WILL INFORM THE POLICY DECISIONS THAT ULTIMATELY AFFECT HUMAN HEALTH AND THE HEALTH OF OUR NATURAL ENVIRONMENT.