Jeremy Werdell @ NASA Goddard Space Flight Center
Research Oceanographer in the Ocean Biology Processing Group (616.2) at NASA Goddard Space Flight Center
My so-called "expertise" lies in the realm of ocean color satellites and bio-optical remote sensing. Specifically: the on-orbit calibration of these satellites and the validation of their data products; the development and evaluation of marine bio-optical algorithms; 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. I occasionally sneak away from the office to teach or act as a student mentor, or escape completely to present our work and ongoing analyses. While recuperating from such scientific endeavors or unable to sail upon favorite locales, I remain dedicated to maritime pursuits by preparing and consuming significant quantities of local fish and shellfish.
ContactNASA Goddard Space Flight CenterMail Code 616.2 Greenbelt, Maryland 20771, USA Voice: 301.286.1440 Fax: 301.286.0268 jeremy dot werdell at nasa dot gov |
EducationDoctoral student, ongoingUniversity of Maine Oceanography Master of Science, 1998 University of Connecticut Oceanography Bachelor of Arts, 1996 University of Virginia Biology; Environmental Sciences |
Selected publications and proceedings
C.L. Gallegos, P.J. Werdell, and C.R. McClain, "Long-term changes in light scattering in Chesapeake Bay inferred from Sechhi depth, light attenuation, and remote sensing measurements", Journal of Geophysical Research 116, C00H08, doi:10.1029/2011JC007160 (2011).M. Szeto, P.J. Werdell, T.S. Moore, and J.W. Campbell, "Are the world's oceans optically different?", Journal of Geophysical Research 116, C00H04, doi:10.1029/2011JC007230 (2011).
P.J. Werdell, B.A. Franz, and S.W. Bailey, "Evaluation of shortwave infrared atmospheric correction for ocean color remote sensing of Chesapeake Bay", Remote Sensing of Environment 114, 2238-2247 (2010).
Z. Ahmad, B.A. Franz, C.R. McClain, E.J. Kwiatkowska, P.J. Werdell, E.P. Shettle, and B.N. Holben, "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, 5545-5560 (2010).
S.W. Bailey, B.A. Franz, and P.J. Werdell, "Estimation of near-infrared water-leaving reflectance for satellite ocean color data processing", Optics Express 18, 7521-7527 (2010).
R.P. Stumpf and P.J. Werdell, "Adjustment of ocean color sensor calibration through multi-band statistics", Optics Express 18, 401-412 (2010).
Z-P. Lee, R. Arnone, C. Hu, P.J. Werdell, and B. Lubac, "Uncertainties of optical parameters and their propagations in an analytical ocean color inversion algorithm", Applied Optics 49, 369-381 (2010).
P.J. Werdell, S.W. Bailey, B.A. Franz, L.W. Harding Jr., Gene C. Feldman, and C.R. McClain, "Regional and seasonal variability of chlorophyll-a in Chesapeake Bay as observed by SeaWiFS and MODIS-Aqua", Remote Sensing of Environment 113, 1319-1330 (2009).
P.J. Werdell, "Global bio-optical algorithms for ocean color satellite applications", EOS Transactions AGU (Meeting Report) 90, 4 (2009).
M.M.P.B. Fuentes, J.A. Maynard, M. Guinea, I.P. Bell, P.J. Werdell, and M. Hamann, "Proxy indicators of sand temperature help project impacts of global warming on sea turtles", Endangered Species Research 9, 33-40 (2009).
C. Brown, Y. Huot, P.J. Werdell, B. Gentili, and H. Claustre, "The origin and global distribution of second order variability in satellite ocean color", Remote Sensing of Environment 112, 4186-4203 (2008).
S.W. Bailey, S.B. Hooker, D. Antoine, B.A. Franz, and P.J. Werdell, "Sources and assumptions for the vicarious calibration of ocean color satellite observations", Applied Optics 47(12), 2035-2045 (2008).
P.J. Werdell, S.W. Bailey, B.A. Franz, A. Morel, and C.R. McClain, "On-orbit vicarious calibration of ocean color sensors using an ocean surface reflectance model", Applied Optics 46(23), 5649-5666 (2007).
B.A. Franz, S.W. Bailey, P.J. Werdell, and C.R. McClain, "Sensor-independent approach to the vicarious calibration of satellite ocean color radiometry", Applied Optics 46(22), 5068-5082 (2007).
A. Morel, Y. Huot, B. Gentili, P.J. Werdell, S.B. Hooker, and B.A. Franz, "Examining the consistency of products derived from various ocean color sensors in open ocean (Case 1) waters in the perspective of a multi-sensor approach", Remote Sensing of Environment 111, 69-88 (2007).
P.J. Werdell, B.A. Franz, S.W. Bailey, L.W. Harding Jr., and G.C. Feldman, "Approach for the long-term spatial and temporal evaluation of ocean color satellite data products in a coastal environment", Proceedings of SPIE 6680, doi:10.1117/12.732489 (2007).
S.W. Bailey and P.J. Werdell, "A multi-sensor approach for the on-orbit validation of ocean color satellite data products", Remote Sensing of Environment 102, 12-23 (2006).
P.J. Werdell and S.W. Bailey, "An improved in-situ bio-optical data set for ocean color algorithm development and satellite data product validation", Remote Sensing of Environment 98, 122-140 (2005).
B.A. Franz, P.J. Werdell, and 8 co-authors, "The continuity of ocean color measurements from SeaWiFS to MODIS", Proceedings of SPIE 5882, doi:10.1117/12.620069 (2005).
P.J. Werdell, S. Bailey, G. Fargion, C. Pietras, K. Knobelspiesse, G. Feldman, and C. McClain, "Unique data repository facilitates ocean color satellite validation", EOS Transactions AGU 84(38), 379 (2003).
P.J. Werdell and C.S. Roesler, "Remote assessment of benthic substrate composition in shallow waters using multispectral reflectance", Limnology and Oceanography 48(1, part 2), 557-567 (2003).
P.J. Werdell and S.W. Bailey, "The SeaWiFS Bio-optical Archive and Storage System (SeaBASS): Current architecture and implementation", NASA/TM-2002-211617, NASA Goddard Space Flight Center, Greenbelt, MD, 45 pp. (2002).
Awards
Science Systems & Applications, Inc. Publication Award 2009Science Systems & Applications, Inc. Publication Award 2007
Science Systems & Applications, Inc. Publication Award 2006
Science Systems & Applications, Inc. Publication Award 2005
NASA Laboratory for Hydrospheric Processes 2002 Outstanding Individual Contractor Peer Award
NASA Goddard Space Flight Center 2005 Quality and Process Improvement Award
NASA Goddard Space Flight Center 2005 Group Achievement Award
NASA Goddard Space Flight Center 2001 Group Achievement Award
Teaching Experience
Instructor, Calibration and Validation for Ocean Color Remote SensingUniversity of Maine Ira C. Darling Marine Center, Walpole, ME, Jul 2011
Master of Science Thesis Committee: Mimi Szeto, "Are the world's oceans optically different?"
University of New Hampshire, Durham, NH, Sep 2007 - Oct 2009
Science Advisor, NASA DEVELOP Internship Program, Coastal Management
NASA Goddard Space Flight Center, Greenbelt, Maryland, Oct 2007 - Jul 2008
Instructor, Introduction to the SeaWiFS Data Analysis System (SeaDAS)
NASA Goddard Space Flight Center, Greenbelt, Maryland, Aug 2001 - present
@ Universidad Nacional, Heredia, Costa Rica
@ University of Maryland Baltimore County, Baltimore, Maryland
@ Old Dominion University, Norfolk, Virginia
Mentor, University of New Hampshire / NASA Research and Discover Summer Internship Program
NASA Goddard Space Flight Center, Greenbelt, Maryland, Jun - Aug 2007
Invited Instructor, Vernon/Bolton (Middle School) Bermuda Workshop
Bermuda Institute for Ocean Sciences, St. George's, Bermuda, Jul 2003 - present
Adjunct Instructor, Introduction to Marine Sciences
Three Rivers Community-Technical College, Norwalk, Connecticut, Jan - Jun 1999
Undergraduate Tutor and Graduate Teaching Assistant for Biology and for Marine Sciences
University of Connecticut, Storrs, Connecticut, Sep - Dec 1996 and 1997
Undergraduate Teaching Assistant for Biology
University of Virginia, Charlottesville, Virginia, Jan - May 1996