Not listed THE RESEARCH PROPOSED HERE REPRESENTS A FOCUSED STUDY ON PHYSIOLOGICAL PROCESSES USED BY PHYTOPLANKTON IN RESPONSE TO RAPID ENVIRONMENTAL CHANGE. CHARACTERIZING THESE RESPONSES IS ESSENTIAL FOR IMPROVING SATELLITE-DERIVED ESTIMATES OF OCEAN PRODUCTIVITY FROM THE ADVANCEDOBSERVATIONAL CAPABILITIES OF THE ACE OCEAN RADIOMETER. PHYTOPLANKTON PHYSIOLOGY IS STRONGLY INFLUENCED BY RESOURCE AVAILABILITY BUT KNOWLEDGE ABOUT THE TIMESCALES OF PHYSIOLOGICAL ACCLIMATION TO RESOURCE CONCENTRATIONS IS NEEDED TO ACCURATELY INTERPRET PROPERTIES RETRIEVABLEFROM SPACE (PARTICULATE BACKSCATTERING COEFFICIENTS AND PIGMENT ABSORPTION). THE CURRENT ASSUMPTION IS THAT PHYTOPLANKTON EXIST IN STEADY STATE WITH RESPECT TO NUTRIENT AND LIGHT AVAILABILITY. HOWEVER VARIABILITY IN FIELD-BASED 14C-UPTAKE MEASUREMENTS SUGGESTS THATPHYSIOLOGICAL ACCLIMATION PROCESSES OPERATE ON DIFFERENT TIMESCALES THAN THE RATES OF CHANGE IN OCEAN PHYSICAL AND CHEMICAL CONDITIONS. THE PROPOSED WORK WILL CHARACTERIZE TIME SCALES OF PHOTOACCLIMATION BASED ON AN ANALYSIS OF PREVIOUS LABORATORY MEASUREMENT AND A LIMITED SET OFNEW MEASUREMENTS. THE OUTCOME OF THIS WORK WILL PROVIDE A BASIS FOR PRODUCTIVITY ALGORITHM DEVELOPMENT IN PREPARATION FOR ACE. ($4) 8/27/19 3 THE RESEARCH PROPOSED HERE REPRESENTS A FOCUSED STUDY ON PHYSIOLOGICAL PROCESSES USED BY PHYTOPLANKTON IN RESPONSE TO RAPID ENVIRONMENTAL CHANGE. CHARACTERIZING THESE RESPONSES IS ESSENTIAL FOR IMPROVING SATELLITE-DERIVED ESTIMATES OF OCEAN PRODUCTIVITY FROM THE ADVANCED OBSERVATIONAL CAPABILITIES OF THE ACE OCEAN RADIOMETER. PHYTOPLANKTON PHYSIOLOGY IS STRONGLY INFLUENCED BY RESOURCE AVAILABILITY, BUT KNOWLEDGE ABOUT THE TIMESCALES OF PHYSIOLOGICAL ACCLIMATION TO RESOURCE CONCENTRATIONS IS NEEDED TO ACCURATELY INTERPRET PROPERTIES RETRIEVABLE FROM SPACE (PARTICULATE BACKSCATTERING COEFFICIENTS AND PIGMENT ABSORPTION). THE CURRENT ASSUMPTION IS THAT PHYTOPLANKTON EXIST IN STEADY STATE WITH RESPECT TO NUTRIENT AND LIGHT AVAILABILITY. HOWEVER, VARIABILITY IN FIELD-BASED 14C-UPTAKE MEASUREMENTS SUGGESTS THAT PHYSIOLOGICAL ACCLIMATION PROCESSES OPERATE ON DIFFERENT TIMESCALES THAN THE RATES OF CHANGE IN OCEAN PHYSICAL AND CHEMICAL CONDITIONS. THE PROPOSED WORK WILL CHARACTERIZE TIME SCALES OF PHOTOACCLIMATION BASED ON AN ANALYSIS OF PREVIOUS LABORATORY MEASUREMENT AND A LIMITED SET OF NEW MEASUREMENTS. THE OUTCOME OF THIS WORK WILL PROVIDE A BASIS FOR PRODUCTIVITY ALGORITHM DEVELOPMENT IN PREPARATION FOR ACE. Funding Only Action ($4) 8/27/19 2 THE RESEARCH PROPOSED HERE REPRESENTS A FOCUSED STUDY ON PHYSIOLOGICAL PROCESSES USED BY PHYTOPLANKTON IN RESPONSE TO RAPID ENVIRONMENTAL CHANGE. CHARACTERIZING THESE RESPONSES IS ESSENTIAL FOR IMPROVING SATELLITE-DERIVED ESTIMATES OF OCEAN PRODUCTIVITY FROM THE ADVANCED OBSERVATIONAL CAPABILITIES OF THE ACE OCEAN RADIOMETER. PHYTOPLANKTON PHYSIOLOGY IS STRONGLY INFLUENCED BY RESOURCE AVAILABILITY, BUT KNOWLEDGE ABOUT THE TIMESCALES OF PHYSIOLOGICAL ACCLIMATION TO RESOURCE CONCENTRATIONS IS NEEDED TO ACCURATELY INTERPRET PROPERTIES RETRIEVABLE FROM SPACE (PARTICULATE BACKSCATTERING COEFFICIENTS AND PIGMENT ABSORPTION). THE CURRENT ASSUMPTION IS THAT PHYTOPLANKTON EXIST IN STEADY STATE WITH RESPECT TO NUTRIENT AND LIGHT AVAILABILITY. HOWEVER, VARIABILITY IN FIELD-BASED 14C-UPTAKE MEASUREMENTS SUGGESTS THAT PHYSIOLOGICAL ACCLIMATION PROCESSES OPERATE ON DIFFERENT TIMESCALES THAN THE RATES OF CHANGE IN OCEAN PHYSICAL AND CHEMICAL CONDITIONS. THE PROPOSED WORK WILL CHARACTERIZE TIME SCALES OF PHOTOACCLIMATION BASED ON AN ANALYSIS OF PREVIOUS LABORATORY MEASUREMENT AND A LIMITED SET OF NEW MEASUREMENTS. THE OUTCOME OF THIS WORK WILL PROVIDE A BASIS FOR PRODUCTIVITY ALGORITHM DEVELOPMENT IN PREPARATION FOR ACE. Funding Only Action $61.2k 7/13/18 Not listed THE RESEARCH PROPOSED HERE REPRESENTS A FOCUSED STUDY ON PHYSIOLOGICAL PROCESSES USED BY PHYTOPLANKTON IN RESPONSE TO RAPID ENVIRONMENTAL CHANGE. CHARACTERIZING THESE RESPONSES IS ESSENTIAL FOR IMPROVING SATELLITE-DERIVED ESTIMATES OF OCEAN PRODUCTIVITY FROM THE ADVANCEDOBSERVATIONAL CAPABILITIES OF THE ACE OCEAN RADIOMETER. PHYTOPLANKTON PHYSIOLOGY IS STRONGLY INFLUENCED BY RESOURCE AVAILABILITY BUT KNOWLEDGE ABOUT THE TIMESCALES OF PHYSIOLOGICAL ACCLIMATION TO RESOURCE CONCENTRATIONS IS NEEDED TO ACCURATELY INTERPRET PROPERTIES RETRIEVABLEFROM SPACE (PARTICULATE BACKSCATTERING COEFFICIENTS AND PIGMENT ABSORPTION). THE CURRENT ASSUMPTION IS THAT PHYTOPLANKTON EXIST IN STEADY STATE WITH RESPECT TO NUTRIENT AND LIGHT AVAILABILITY. HOWEVER VARIABILITY IN FIELD-BASED 14C-UPTAKE MEASUREMENTS SUGGESTS THATPHYSIOLOGICAL ACCLIMATION PROCESSES OPERATE ON DIFFERENT TIMESCALES THAN THE RATES OF CHANGE IN OCEAN PHYSICAL AND CHEMICAL CONDITIONS. THE PROPOSED WORK WILL CHARACTERIZE TIME SCALES OF PHOTOACCLIMATION BASED ON AN ANALYSIS OF PREVIOUS LABORATORY MEASUREMENT AND A LIMITED SET OFNEW MEASUREMENTS. THE OUTCOME OF THIS WORK WILL PROVIDE A BASIS FOR PRODUCTIVITY ALGORITHM DEVELOPMENT IN PREPARATION FOR ACE. $61.2k 7/13/18 Not listed THE RESEARCH PROPOSED HERE REPRESENTS A FOCUSED STUDY ON PHYSIOLOGICAL PROCESSES USED BY PHYTOPLANKTON IN RESPONSE TO RAPID ENVIRONMENTAL CHANGE. CHARACTERIZING THESE RESPONSES IS ESSENTIAL FOR IMPROVING SATELLITE-DERIVED ESTIMATES OF OCEAN PRODUCTIVITY FROM THE ADVANCEDOBSERVATIONAL CAPABILITIES OF THE ACE OCEAN RADIOMETER. PHYTOPLANKTON PHYSIOLOGY IS STRONGLY INFLUENCED BY RESOURCE AVAILABILITY BUT KNOWLEDGE ABOUT THE TIMESCALES OF PHYSIOLOGICAL ACCLIMATION TO RESOURCE CONCENTRATIONS IS NEEDED TO ACCURATELY INTERPRET PROPERTIES RETRIEVABLEFROM SPACE (PARTICULATE BACKSCATTERING COEFFICIENTS AND PIGMENT ABSORPTION). THE CURRENT ASSUMPTION IS THAT PHYTOPLANKTON EXIST IN STEADY STATE WITH RESPECT TO NUTRIENT AND LIGHT AVAILABILITY. HOWEVER VARIABILITY IN FIELD-BASED 14C-UPTAKE MEASUREMENTS SUGGESTS THATPHYSIOLOGICAL ACCLIMATION PROCESSES OPERATE ON DIFFERENT TIMESCALES THAN THE RATES OF CHANGE IN OCEAN PHYSICAL AND CHEMICAL CONDITIONS. THE PROPOSED WORK WILL CHARACTERIZE TIME SCALES OF PHOTOACCLIMATION BASED ON AN ANALYSIS OF PREVIOUS LABORATORY MEASUREMENT AND A LIMITED SET OFNEW MEASUREMENTS. THE OUTCOME OF THIS WORK WILL PROVIDE A BASIS FOR PRODUCTIVITY ALGORITHM DEVELOPMENT IN PREPARATION FOR ACE. $61.8k 4/25/17