Sciences and Exploration Directorate

Jeremy Werdell (he/him)


Jeremy Werdell (he/him)'s Contact Card & Information.
Phone: 301.286.1440
Org Code: 616
Mail Code 616.2
Greenbelt, MD 20771

Missions & Projects

Brief Bio

Jeremy Werdell is an Oceanographer in the Ocean Ecology Laboratory (OEL) at NASA Goddard Space Flight Center (GSFC) and the Project Scientist for the upcoming PACE mission. He received his Bachelors of Arts in Biology and in Environmental Science from the University of Virginia in 1996, his Masters of Science in Oceanography from the University of Connecticut in 1998, and his Doctor of Philosophy from the University of Maine in 2014. Jeremy has worked in the OEL Ocean Biology Processing Group since 1999, where he now serves as a senior leader of several tasks, and has served as the PACE Project Scientist since 2015. Jeremy currently oversees the SeaWiFS Bio-optical Archive and Storage System (SeaBASS), NASA bio-Optical Marine Algorithm Data set (NOMAD), and OEL in-water bio-optical algorithm development efforts. His research interests extend to the on-orbit calibration of ocean color satellite instruments, the validation of remotely-sensed data products, the collection and analysis of in situ biogeochemical oceanographic measurements, and the assimilation of the above to study how the global ocean and various regional ecosystems are changing with time. When time permits, Jeremy moonlights as a teacher and student mentor (and wannabe chef). He has led several internationally attended workshops on bio-optical algorithm development and helped instruct undergraduate and graduate-level courses on ocean optics and biology.



2024. "The Ocean Color Instrument (OCI) on the Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) Mission: System Design and Prelaunch Radiometric Performance." IEEE Transactions on Geoscience and Remote Sensing 1-1 [10.1109/tgrs.2024.3383812] [Journal Article/Letter]

2024. "Phytoplankton composition from sPACE: Requirements, opportunities, and challenges." Remote Sensing of Environment 302 (1): 113964 [10.1016/j.rse.2023.113964] [Journal Article/Letter]

2024. "Spectral correlation in MODIS water-leaving reflectance retrieval uncertainty." Optics Express 32 (2): 2490 [10.1364/oe.502561] [Journal Article/Letter]

2023. "Simultaneous retrieval of aerosol and ocean properties from PACE HARP2 with uncertainty assessment using cascading neural network radiative transfer models." Atmospheric Measurement Techniques 16 (23): [] [Journal Article/Letter]

2023. "Performance evaluation of three bio-optical models in aerosol and ocean color joint retrievals." Atmospheric Measurement Techniques 16 (23): 5749-5770 [10.5194/amt-16-5749-2023] [Journal Article/Letter]

2023. "Informing ocean color inversion products by seeding with ancillary observations." Optics Express 31 (24): 40557 [10.1364/oe.503496] [Journal Article/Letter]

2023. "Assessing the suitability of lakes and reservoirs for recreation using Landsat 8." Environmental Monitoring and Assessment 195 (11): 1353 [10.1007/s10661-023-11830-5] [Journal Article/Letter]

2023. "Synergies Between NASA's Hyperspectral Aquatic Missions PACE, GLIMR, and SBG: Opportunities for New Science and Applications." Journal of Geophysical Research: Biogeosciences 128 (10): [10.1029/2023jg007574] [Journal Article/Letter]

2023. "Recent changes in cyanobacteria algal bloom magnitude in large lakes across the contiguous United States." Science of The Total Environment 165253 [10.1016/j.scitotenv.2023.165253] [Journal Article/Letter]

2023. "Bayesian approach to a generalized inherent optical property model." Optics Express 31 (14): 22790 [10.1364/oe.486581] [Journal Article/Letter]

2023. "Optimizing retrieval spaces of bio-optical models for remote sensing of ocean color." Applied Optics 62 (13): 3299 [10.1364/ao.484082] [Journal Article/Letter]

2023. "The CHROMA cloud-top pressure retrieval algorithm for the Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) satellite mission." Atmospheric Measurement Techniques 16 (4): 969-996 [10.5194/amt-16-969-2023] [Journal Article/Letter]

2022. "Effective uncertainty quantification for multi-angle polarimetric aerosol remote sensing over ocean." Atmos. Meas. Tech. 15 (16): 4859–4879 [10.5194/amt-15-4859-2022] [Journal Article/Letter]

2022. "Genesis and Evolution of NASA’s Satellite Ocean Color Program." Frontiers in Remote Sensing 3 [10.3389/frsen.2022.938006] [Journal Article/Letter]

2022. "Optimal Estimation Framework for Ocean Color Atmospheric Correction and Pixel-level Uncertainty Quantification." Applied Optics Vol. 61 No. 20 [10.1364/ao.461861] [Journal Article/Letter]

2022. "Test Results From the Prelaunch Characterization Campaign of the Engineering Test Unit of the Ocean Color Instrument of NASA’s Plankton, Aerosol, Cloud and Ocean Ecosystem (PACE) Mission." Frontiers in Remote Sensing 3 [10.3389/frsen.2022.875863] [Journal Article/Letter]

2022. "A compilation of global bio-optical in situ data for ocean-colour satellite applications – version three." Earth System Science Data [10.5194/essd-2022-159] [Journal Article/Letter]

2022. "Satellites quantify the spatial extent of cyanobacterial blooms across the United States at multiple scales." Ecological Indicators 140 108990 [10.1016/j.ecolind.2022.108990] [Journal Article/Letter]

2022. "Augmenting Heritage Ocean-Color Aerosol Models for Enhanced Remote Sensing of Inland and Nearshore Coastal Waters." Frontiers in Remote Sensing 3 [10.3389/frsen.2022.860816] [Journal Article/Letter]

2022. "PACE: How one NASA mission aligns with the United Nations Decade of Ocean Science for Sustainable Development." Marine Technological Society Journal 56 (3): 118-121 [Magazine]

2022. "Alignment of optical backscatter measurements from the EXPORTS Northeast Pacific Field Deployment." Elementa: Science of the Anthropocene 10 (1): [10.1525/elementa.2021.00021] [Journal Article/Letter]

2022. "A Radiative Transfer Simulator for PACE: Theory and Applications." Frontiers in Remote Sensing 3 [10.3389/frsen.2022.840188] [Journal Article/Letter]

2022. "A validation of satellite derived cyanobacteria detections with state reported events and recreation advisories across U.S. lakes." Harmful algae 102191 [10.1016/j.hal.2022.102191] [Journal Article/Letter]

2021. "Adaptive Data Screening for Multi-Angle Polarimetric Aerosol and Ocean Color Remote Sensing Accelerated by Deep Learning." Frontiers in Remote Sensing 2 [10.3389/frsen.2021.757832] [Journal Article/Letter]

2021. "Satellites for long-term monitoring of inland U.S. lakes: The MERIS time series and application for chlorophyll-a." Remote Sensing of Environment 266 112685 [10.1016/j.rse.2021.112685] [Journal Article/Letter]

2021. "A three-step semi analytical algorithm (3SAA) for estimating inherent optical properties over oceanic, coastal, and inland waters from remote sensing reflectance." Remote Sensing of Environment 263 112537 [10.1016/j.rse.2021.112537] [Journal Article/Letter]

2021. "Satellite remote sensing to assess cyanobacterial bloom frequency across the United States at multiple spatial scales." Ecological Indicators 128 107822 [10.1016/j.ecolind.2021.107822] [Journal Article/Letter]

2021. "Seasonal bias in global ocean color observations." Applied Optics 60 (23): 6978 [10.1364/ao.426137] [Journal Article/Letter]

2021. "Assessing cyanobacterial frequency and abundance at surface waters near drinking water intakes across the United States." Water Research 117377 [10.1016/j.watres.2021.117377] [Journal Article/Letter]

2021. "Efficient multi-angle polarimetric inversion of aerosols and oceancolor powered by a deep neural network forward model." Atmospheric Measurement Techniques 14 (6): 4083–4110 [] [Journal Article/Letter]

2021. "Development and Validation of an Empirical Ocean Color Algorithm with Uncertainties: A Case Study with the Particulate Backscattering Coefficient." Journal of Geophysical Research: Oceans 126 (5): [10.1029/2021jc017231] [Journal Article/Letter]

2021. "Atmospheric correction over the ocean for hyperspectral radiometers using multi-angle polarimetric retrievals." Optics Express 29 (3): 4504 [10.1364/oe.408467] [Journal Article/Letter]

2021. "Evaluation of a satellite-based cyanobacteria bloom detection algorithm using field-measured Microcystin data." Science of The Total Environment 145462 [10.1016/j.scitotenv.2021.145462] [Journal Article/Letter]

2020. "Particulate backscattering in the global ocean: A comparison of independent assessments." Geophysical Research Letters [10.1029/2020gl090909] [Journal Article/Letter]

2020. "150 shades of green: Using the full spectrum of remote sensing reflectance to elucidate color shifts in the ocean." Remote Sensing of Environment 247 111900 [] [Journal Article/Letter]

2020. "Radiometric approach for the detection of picophytoplankton assemblages across oceanic fronts." Optics Express 28 (18): 25682 [10.1364/oe.398127] [Journal Article/Letter]

2020. "Bayesian retrieval of optically relevant properties from hyperspectral water-leaving reflectances." Applied Optics 59 (23): 6902 [10.1364/ao.398043] [Journal Article/Letter]

2020. "Inversion of multiangular polarimetric measurements from the ACEPOL campaign: an application of improving aerosol property and hyperspectral ocean color retrievals." Atmospheric Measurement Techniques 13 3939–3956 [10.5194/amt-13-3939-2020] [Journal Article/Letter]

2020. "Neural Network Reflectance Prediction Model for Both Open Ocean and Coastal Waters." Remote Sensing 12 (9): 1421 [10.3390/rs12091421] [Journal Article/Letter]

2019. "Measurement of Cyanobacterial Bloom Magnitude using Satellite Remote Sensing." Scientific Reports 9 (1): 18310 [10.1038/s41598-019-54453-y] [Journal Article/Letter]

2019. "Developing a Community of Practice for Applied Uses of Future PACE Data to Address Marine Food Security Challenges." Frontiers in Earth Science 7 [10.3389/feart.2019.00283] [Journal Article/Letter]

2019. "An Ocean-Colour Time Series for Use in Climate Studies: The Experience of the Ocean-Colour Climate Change Initiative (OC-CCI)." Sensors 19 (19): 4285 [10.3390/s19194285] [Journal Article/Letter]

2019. "Comparing level-2 and level-3 satellite ocean color retrieval validation methodologies." Optics Express 27 (21): 30140 [Full Text] [10.1364/oe.27.030140] [Journal Article/Letter]

2019. "Chlorophyll algorithms for ocean color sensors - OC4, OC5 & OC6." Remote Sensing of Environment 229 32-47 [10.1016/j.rse.2019.04.021] [Journal Article/Letter]

2019. "Inversion of multi-angular polarimetric measurements over open and coastal ocean waters: a joint retrieval algorithm for aerosol and water leaving radiance properties." Atmospheric Measurement Techniques 12 (7): 3921–3941 [10.5194/amt-12-3921-2019] [Journal Article/Letter]

2019. "A compilation of global bio-optical in situ data for ocean-colour satellite applications – version two." Earth System Science Data 11 (3): 1037-1068 [10.5194/essd-11-1037-2019] [Journal Article/Letter]

2019. "Approach for propagating radiometric data uncertainties through NASA ocean color algorithms." Frontiers in Earth Science [10.3389/feart.2019.00176] [Journal Article/Letter]

2019. "Going Beyond Standard Ocean Color Observations: Lidar and Polarimetry." Frontiers in Marine Science 6 [10.3389/fmars.2019.00251] [Journal Article/Letter]

2019. "The Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission: Status, science, advances." Bulletin of the American Meteorological Society 100 (9): 1775–1794 [10.1175/bams-d-18-0056.1] [Journal Article/Letter]

2019. "Satellite Remote Sensing: Ocean Color." Encyclopedia of Ocean Sciences (Third Edition) 5 443-455 [10.1016/B978-0-12-409548-9.10817-6] [Article in Book]

2019. "Sensitivity of inherent optical properties from ocean reflectance inversion models to satellite instrument wavelength suites." Frontiers in Earth Science 7 [10.3389/feart.2019.00054] [Journal Article/Letter]

2019. "Improving Satellite Global Chlorophyll a Data Products Through Algorithm Refinement and Data Recovery." Journal of Geophysical Research: Oceans 124 (3): 1524-1543 [10.1029/2019jc014941] [Journal Article/Letter]

2018. "Approach for identifying optically shallow pixels when processing ocean-color imagery." Optics Express 26 (22): A915 [10.1364/oe.26.00a915] [Journal Article/Letter]

2018. "Mobile device application for monitoring cyanobacteria harmful algal blooms using Sentinel-3 satellite Ocean and Land Colour Instruments." Environmental Modelling & Software 109 93-103 [10.1016/j.envsoft.2018.08.015] [Journal Article/Letter]

2018. "Radiative Transfer Modeling of Phytoplankton Fluorescence Quenching Processes." Remote Sensing 10 (8): 1309 [10.3390/rs10081309] [Journal Article/Letter]

2018. "Retrieval of aerosol properties and water-leaving reflectance from multi-angular polarimetric measurements over coastal waters." Optics Express 26 (7): 8968 [10.1364/oe.26.008968] [Journal Article/Letter]

2018. "Performance metrics for the assessment of satellite data products: an ocean color case study." Optics Express 26 (6): 7404 [10.1364/oe.26.007404] [Journal Article/Letter]

2018. "An overview of approaches and challenges for retrieving marine inherent optical properties from ocean color remote sensing." Progress in Oceanography 160 186–212 [10.1016/j.pocean.2018.01.001] [Journal Article/Letter]

2017. "Satellite monitoring of cyanobacterial harmful algal bloom frequency in recreational waters and drinking water sources." Ecological Indicators 80 84-95 [10.1016/j.ecolind.2017.04.046] [Journal Article/Letter]

2017. "Pan-Arctic optical characteristics of colored dissolved organic matter: Tracing dissolved organic carbon in changing Arctic waters using satellite ocean color data." Remote Sensing of Environment 200 89-101 [10.1016/j.rse.2017.08.009] [Journal Article/Letter]

2017. "Determining the optimal spectral sampling frequency and uncertainty thresholds for hyperspectral remote sensing of ocean color." Optics Express 25 (16): A785 [10.1364/oe.25.00a785] [Journal Article/Letter]

2017. "A method for examining temporal changes in cyanobacterial harmful algal bloom spatial extent using satellite remote sensing." Harmful Algae 67 144-152 [10.1016/j.hal.2017.06.001] [Journal Article/Letter]

2017. "Vector radiative transfer model for coupled atmosphere and ocean systems including inelastic sources in ocean waters." Optics Express 25 (8): A223 [10.1364/oe.25.00a223] [Journal Article/Letter]

2016. "Validation of Ocean Color Remote Sensing Reflectance Using Autonomous Floats." Journal of Atmospheric and Oceanic Technology 33 (11): 2331-2352 [10.1175/jtech-d-16-0067.1] [Journal Article/Letter]

2016. "Implementation of an analytical Raman scattering correction for satellite ocean-color processing." Opt. Express 24 (14): A1123--A1137 [10.1364/OE.24.0A1123] [Journal Article/Letter]

2016. "A compilation of global bio-optical in situ data for ocean-colour satellite applications." Earth System Science Data 8 (1): 235-252 [10.5194/essd-8-235-2016] [Journal Article/Letter]

2015. "CoastColour Round Robin data sets: a database to evaluate the performance of algorithms for the retrieval of water quality parameters in coastal waters." Earth System Science Data 7 (2): 319-348 [10.5194/essd-7-319-2015] [Journal Article/Letter]

2015. "Assessment of ocean color data records from MODIS-Aqua in the western Arctic Ocean." Deep Sea Research Part II: Topical Studies in Oceanography 118 (Part A): 32-43 [10.1016/j.dsr2.2015.02.011] [Journal Article/Letter]

2015. "Global Ocean Phytoplankton [in State of the Climate in 2014] ." Bulletin of the American Meteorological Society 96 (7): S85-S87 [10.1175/2015BAMSStateoftheClimate.1] [Journal Article/Letter]

2015. "The Ocean Colour Climate Change Initiative: III. A round-robin comparison on in-water bio-optical algorithms." Remote Sensing of Environment 162 271-294 [10.1016/j.rse.2013.09.016] [Journal Article/Letter]

2015. "A semianalytical ocean color inversion algorithm with explicit water column depth and substrate reflectance parameterization." Journal of Geophysical Research - Oceans 120 (3): 1741-1770 [10.1002/ 2014JC010224] [Journal Article/Letter]

2015. "Ocean color measurements with the Operational Land Imager on Landsat-8: implementation and evaluation in SeaDAS." Journal of Applied Remote Sensing 9 (1): 096070 [10.1117/I.JRS.9.096070] [Journal Article/Letter]

2014. "Locating Noctiluca miliaris in the Arabian Sea: An optical proxy approach." Limnology and Oceanography 59 2042-2056 [doi:10.4319/lo.2014.59.6.2042] [Journal Article/Letter]

2014. "Discrimination of phytoplankton functional groups using an ocean reflectance inversion model." Applied Optics 53 (22): 4833-4849 [10.1364/AO.53.004833] [Journal Article/Letter]

2014. "Global Ocean Phytoplankton [in "State of the Climate in 2013"]." Bulletin of the American Meteorological Society 95 (7): 578-580 [10.1175/2014BAMSStateoftheClimate.1] [Journal Article/Letter]

2013. "Global Ocean Phytoplankton." Bulletin of the American Meteorological Society State of the Climate 575-578 [Journal Article/Letter]

2013. "Underway sampling of marine inherent optical properties on the Tara Oceans expedition as a novel resource for ocean color satellite data product validation." Methods in Oceanography 7 40-51 [10.1016/j.mio.2013.09.001] [Journal Article/Letter]

2013. "Retrieving marine inherent optical properties from satellites using temperature and salinity-dependent backscattering by seawater." Opt. Express 21 (26): 32,611-32,622 [10.1364/OE.21.032611] [Journal Article/Letter]

2013. "Regional to global assessments of phytoplankton dynamics from the SeaWiFS mission." Remote Sensing of Environment 135 77-91 [10.1016/j.rse.2013.03.025] [Journal Article/Letter]

2013. "Generalized ocean color inversion model for retrieving marine inherent optical properties." Applied Optics 52 (10): 2019-2037 [10.1364/AO.52.002019] [Journal Article/Letter]

2012. "Satellite-Derived Photic Depth on the Great Barrier Reef: Spatio-Temporal Patterns of Water Clarity." Remote Sensing 4 (12): 3781-3795 [10.3390/rs4123781] [Journal Article/Letter]

2012. "Technical Note: Calibration and validation of geophysical observation models." Biogeosciences 9 (6): 2195–2201 [10.5194/bg-9-2195-2012] [Journal Article/Letter]

2012. "Under the hood of satellite empirical chlorophyll a algorithms: revealing the dependencies of maximum band ratio algorithms on inherent optical properties." Opt. Express 20 (19): 20920 [10.1364/OE.20.020920] [Journal Article/Letter]

2011. "Are the world's oceans optically different?." J. Geophys. Res. 116 C00H04 [10.1029/2011JC007230] [Journal Article/Letter]

2010. "Evaluation of shortwave infrared atmospheric correction for ocean color remote sensing of Chesapeake Bay." Remote Sensing of Environment 114 (10): 2238-2247 [10.1016/j.rse.2010.04.027] [Journal Article/Letter]

2010. "Uncertainties of optical parameters and their propagations in an analytical ocean color inversion algorithm." Appl Opt 49 369-381 [Journal Article/Letter]

2010. "New aerosol models for the retrieval of aerosol optical thickness and normalized water-leaving radiances from the SeaWiFS and MODIS sensors over coastal regions and open oceans." Applied Optics 49 (29): 5545 [10.1364/AO.49.005545] [Journal Article/Letter]

2010. "Estimation of near-infrared water-leaving reflectance for satellite ocean color data processing." Optics Express 7521-7527 [Journal Article/Letter]

2009. "Regional and seasonal variability of chlorophyll-a in Chesapeake Bay as observed by SeaWiFS and MODIS-Aqua." Remote Sensing of Environment 113 (6): 1319-1330 [10.1016/j.rse.2009.02.012] [Journal Article/Letter]

2009. "Global Bio-optical Algorithms for Ocean Color Satellite Applications: Inherent Optical Properties Algorithm Workshop at Ocean Optics XIX; Barga, Italy, 3–4 October 2008." Eos, Transactions American Geophysical Union 90 (1): 4 [10.1029/2009EO010005] [Journal Article/Letter]

2008. "Sources and assumptions for the vicarious calibration of ocean color satellite observations." Applied Optics 47 (12): 2035 [10.1364/AO.47.002035] [Journal Article/Letter]

2008. "The origin and global distribution of second order variability in satellite ocean color and its potential applications to algorithm development." Remote Sensing of Environment 112 (12): 4186-4203 [10.1016/j.rse.2008.06.008] [Journal Article/Letter]

2007. "On-orbit vicarious calibration of ocean color sensors using an ocean surface reflectance model." Applied Optics 46 (23): 5649 [10.1364/AO.46.005649] [Journal Article/Letter]

2007. "Examining the consistency of products derived from various ocean color sensors in open ocean (Case 1) waters in the prespective of multi-sensor approach." Remote Sens Environ 111 69-88 [Journal Article/Letter]

2007. "Sensor-independent approach to the vicarious calibration of satellite ocean color radiometry." Appl Opt 46 (22): 5068-5082 [Journal Article/Letter]

2006. "A multi-sensor approach for the on-orbit validation of ocean color satellite data products." Remote Sens Environ 102 12-23 [10.1016/j.rse.2006.01.015] [Journal Article/Letter]

2005. "An improved in-situ bio-optical data set for ocean color algorithm development and satellite data product validation." Remote Sens Environ 98 122-140 [10.1016/j.rse.2005.07.001] [Journal Article/Letter]

2003. "Unique data repository facilitates ocean color satellite validation." Eos, Transactions American Geophysical Union 84 (38): 377 [10.1029/2003EO380001] [Journal Article/Letter]

2003. "Remote assessment of benthic substrate composition in shallow waters using multispectral reflectance." Limnology and Oceanography 48 (1, part 2): 557-567 [Journal Article/Letter]

2003. "The SeaWiFS PAR Product." NASA/TM 2003--206892, Vol 22 46-50 [Article in Book]

2001. "Calibration of SeaWiFS. II. Vicarious techniques." Applied Optics 40 (36): 6701-6718 [10.1364/AO.40.006701] [Journal Article/Letter]


2023. "Pre-Launch Calibration Methods of OCI on the Pace Mission." IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium 1341-1344 [10.1109/igarss52108.2023.10282804] [Proceedings]

2023. "Initial Look at the Results from the Prelaunch Characterization Campaign of OCI on the Pace Mission." IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium 1345-1348 [10.1109/igarss52108.2023.10281727] [Proceedings]

2019. "Calibration plan for the Ocean Color Instrument (OCI) engineering test unit." Sensors, Systems, and Next-Generation Satellites XXIII 11151 111511W [10.1117/12.2550820] [Proceedings]

2019. "The NASA Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission: an emerging era of global, hyperspectral Earth system remote sensing." Sensors, Systems, and Next-Generation Satellites XXIII 11151 111510G [10.1117/12.2537146] [Proceedings]

2014. "Remote sensing of IOPs in the Arctic Ocean using the GIOP framework." Proc. Ocean Optics XXII [Proceedings]

2014. "Ocean Color Measurements from Landsat-8 OLI using SeaDAS." Proc. Ocean Optics XXII [Proceedings]

2014. "Assessment of ocean color data records from MODIS-Aqua in the western Arctic Ocean." Proc. Ocean Optics XXII [Proceedings]

2014. "SWIM: a semi-analytical ocean color inversion algorithm for optically shallow waters." Proc. Ocean Optics XXII [Proceedings]

2014. "The SeaBASS validation system: redesigned tools and online resources for ocean color satellite match-ups." Proc. Ocean Optics XXII [Proceedings]

2014. "Remotely searching for Noctiluca miliaris in the Arabian Sea." Proc. Ocean Optics XXII [Proceedings]

2012. "Sensitivity of ocean reflectance inversion models for identifying and discriminating between phytoplankton functional groups." Proc. Ocean Optics XXI [Proceedings]

2012. "Quality and Consistency of the NASA Ocean Color Data Record." Proc. Ocean Optics XXI [Journal Article/Letter]

2011. "Requirements for an Advanced Ocean Radiometer ." NASA Tech Memo 37 [Other]

2010. "A Generalized Framework for Modeling of Inherent Optical Properties in Ocean Remote Sensing Applications." Proc. Ocean Optics XX [Proceedings]

2007. "Approach for the long-term spatial and temporal evaluation of ocean color satelliet data products in a coastal environment." Proc. SPIE Int. Soc. Opt. Eng 6680 12 pp [10.1117/12.732489] [Proceedings]

2006. "Recent Advances in the Operational Vicarious Calibration of Visible and Near- infrared Ocean Color Satellite Radiometry." Proc. Ocean Optics XVIII [Proceedings]

2006. "MODIS Land Bands for Ocean Remote Sensing Applications." Proc. Ocean Optics XVIII [Proceedings]

2005. "The continuity of ocean color measurements from SeaWiFS to MODIS." Proc SPIE Int Soc Opt Eng 5882 304-316 [Other]

2003. "SIMBIOS Program in Support of Ocean Color Missions: 1997-2003." Proc SPIE Int Soc Opt Eng 5155 49-60 [Other]

2003. "Overview of SeaBASS and MODIS Validation Activity." NASA/TM-2003 35-40 [Article in Book]

2003. "Masks and Flags Updates." NASA/TM 2003--206892, Vol 22 34-40 [Report]

2003. "Changes to the Vicarious Calibration of SeaWiFS." NASA/TM 2003-206892, Vol 22 20-25 [Report]

2003. "SIMBIOS Project Data Processing and Analysis Results." NASA/TM-2003-211622 11841 [Article in Book]

2003. "Algorithm Updates for the Fourth SeaWiFS Data Reprocessing." NASA/TM 2003-206892 22 74 pp [Report]

2002. "The SeaWiFS Bio-Optical Archive and Storage System (SeaBASS): Current Architecture and Implementation, Introduction." NASA Tech Memo 2002-211617 1 [Other]

2002. "Ocean Optics Potocols for Satellite Ocean Color Sensor Validation." NASA Tech Memo 2002-210004, Rev 3, Vol 1 iii-iv [Other]

2002. "SeaBASS Data Protocols and Policy." NASA Tech Memo 2002-210004, Rev 3, Vol 2 284-287 [Report]

2000. "The description of the SeaWiFS absorbing aerosol index." SeaWiFS NASA Technical Memorandum 2000-206892 10 3-5 [Journal Article/Letter]

Current Projects

Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission

Remote Sensing

Cyanobacteria Assessment Network (CyAN)


MODIS & VIIRS aquatic inherent optical properties retrievals


Evolution, maintenance and performance assessment of aquatic inherent optical properties to support MODIS and VIIRS ocean color science (


PACE Project Scientist

NASA Goddard Space Flight Center - NASA Goddard Space Flight Center

February 2015 - Present


Research Oceanographer

NASA Goddard Space Flight Center - NASA Goddard Space Flight Center

March 2012 - Present

Adjunct Faculty

University of Maine School of Marine Science - Walpole, ME

February 2022 - Present

Lead Research Scientist

Science Systems and Applications, Inc. - On-site contractor at NASA Goddard Space Flight Center

June 1999 - March 2012

Teaching Experience

Post-doctoral scholars:

Anna Windle (2023-present)

Zachary Erickson (2019-2021)

Priscila Lange (2018-2020)

Bridget Seegers (2016-2017)

Lachlan McKinna (2014-2015)

NASA Fellows:

E. Riley Blocker (2021-present)

Instructor, "Calibration and Validation for Ocean Color Remote Sensing"

University of Maine Ira C. Darling Marine Center, Walpole, ME

4-week graduate-level course in optical oceanography

2011 to present

Lead Instructor, "What's behind the curtain of the NASA Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission?"

University of Maryland Baltimore County, Baltimore, MD

1-week graduate-level course in the PACE mission

August 2022

Instructor, "Vernon Bermuda Workshop"

Bermuda Institute for Ocean Sciences, St. George's Bermuda

1-week high school-level course in subtropical ecology

2003 to 2019

Adjunct Instructor, "Introduction to Marine Sciences"

Three Rivers Community-Technical College, Norwich, CT

3-credit undergraduate-level course in oceanography

Spring semester 1999



Ph.D., Oceanography, 2014

University of Maine, Orono, ME

M.S., Oceanography, 1998

University of Connecticut, Storrs, CT

B.A., Biology, Environmental Science, 1996

University of Virginia, Charlottesville, VA

Certificate of Specialization in Leadership and Management:

  • Certificate in Organizational Leadership: an 8-week/48 hour online certificate program, 2023
  • Certificate in Management Essentials: an 8-week/40-hour online certificate program, 2022
  • Certificate in Leadership Principles: a 6-week/30-hour online certificate program, 2021

Harvard Business School Online

Professional Societies

American Geophysical Union


2016 - Present

The Oceanography Society


2016 - Present


2022 Robert H. Goddard Technical Award for the "PACE OCI Data Analysis Team"

2022 GSFC Hydrosphere, Biosphere, and Geophysics (HBG) Peer Award

2021 U.S. Environmental Protection Agency Silver Medal for Superior Service for "ORD Cyanobacteria Assessment Network Team"

2021 U.S. Environmental Protection Agency Scientific and Technical Achievement Award Level III for CyAN publications

2021 Robert H. Goddard Science Award for the "CyAN Team"

2021 Robert H. Goddard Technical Award for the "PACE Science Algorithm Team"

2021 GSFC Special Act award for "Outstanding service for the PACE mission, the Ocean Ecology Laboratory, and NASA"

2019 Robert H. Goddard Science Award for the "The Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) Project Science Team"