PUBLICATIONS: PEER-REVIEWED

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Czerski, H., M. Twardowski, X. Zhang, S. Vagle. 2011. Resolving size distributions of bubbles with radii less than 30 µm with optical and acoustical methods. J. Geophys Res., (116) C00H11, doi:10.1029/2011JC007177.

Zhang, X., M.S. Twardowski, and M. Lewis. 2011. Retrieving composition and sizes of oceanic particle subpopulations from the volume scattering function. Appl. Optics, 50:1240-1259.

Voss, K.J., S. McLean, M. Lewis, C. Johnson, S. Flora, M. Feinholz, M. Yarbrough, C. Trees, M. Twardowski, D. Clark. 2011. An example crossover experiment for testing new vicarious calibration techniques for satellite ocean color radiometry. J Atmos Oceanic Tech, 27:1747:1759, DOI: 10.1175/2010JTECHO737.1.

You, Y., A. Tonizzo, A.A. Gilerson, M.E. Cummings, P. Brady, J.M. Sullivan, M.S. Twardowski, H.M. Dierssen, S.A. Ahmed, and G.W. Kattawar. 2011. Measurements and simulations of polarization states of underwater light in clear oceanic waters, Optics Express, 50(24):4873-4893.

Bhandari, P. K. Voss, L. Logan, and M. Twardowski. 2011. The Variation of the Polarized Downwelling Radiance Distribution with Depth in the Coastal and Clear Ocean. J Geophys Res, in press.

Chang, G. and M. Twardowski. 2011. Effects of physical forcing and particle characteristics on underwater imaging performance, J Geophys Res, in press.

Czerski, H., M. Twardowski, X. Zhang, and S. Vagle. 2011. Resolving size distributions of bubbles with radii less than 30 microns with optical and acoustical methods, J Geophys Res, in press.

Dickey, T. and Others. 2011. Recent Advances in the Study of Optical Variability in the Near-surface and Upper Ocean. J Geophys Res., in review.

Dombroski, J., and M. Twardowski. 2011. Identification of fluorophoric components of dissolved organic matter in Narragansett Bay, Rhode Island using excitation-emission matrices and Parallel Factor Analysis (PARAFAC). Science of the Total Environment, in review.

Gleason, A., K. Voss, H.R. Gordon, M. Twardowski, J. Sullivan, C. Trees, A. Weidemann, and J-F Berthon. 2011. Assessment of an empirical particle scattering phase function for modeling oceanic upwelling hemispherical radiance distributions. Opt Express, in review.

Groundwater, H., M. Twardowski, H. Dierssen, A. Sciandre, and S. Freeman. 2011. Determining oceanic particle size distributions and particle composition: a new SEM-EDS protocol with validation and comparison to other methods. Science Total Environ, in press.

Lee, Z., V. Lance, S. Shang, R. Vaillancourt, S. Freeman, B. Lubac, B. Hargreaves, C. Del Castillo, R. Miller, M. Twardowski, G. Wei. 2011. An assessment of optical properties and primary production derived from remote sensing in the Southern Ocean (SO GasEx). J Geophys Res, 116, C00F03, doi:10.1029/2010JC006747.

Randolph, K. H. Dierssen, M. Twardowski, A. Cifuentes Lorenzen, C. Zappa. 2011. Optical measurements of bubble size distributions at 6-9 m depths generated by large-scale breaking waves in the Southern Ocean. J Geophys Res., in review.

Sullivan, J., M. Twardowski, J.R.V. Zaneveld, and C. Moore. 2011. Measuring optical backscattering in water. Light Scattering Reviews, in review.

Twardowski, M., X. Zhang, S. Vagle, J. Sullivan, S. Freeman, H. Czerski, Y. You, L. Bi, and G. Kattawar. 2011. The optical volume scattering function in a surf zone inverted to derive sediment and bubble particle subpopulations, J Geophys Res, in press.

Aurin, D., H.M. Dierssen, M.S. Twardowski, and C.S. Roesler. 2010. Optical complexity in Long Island Sound and implications for coastal ocean color remote sensing. Journal of Geophysical Research, 115, C07011, doi:10.1029/2009JC005837.

Chang, G., M.S. Twardowski, Y. You, M. Moline, P. Zhai, S. Freeman, M. Slivkoff, F. Nencioli, and G. Kattawar. 2010. Effects of optical variability on the prediction of underwater visibility. Applied Optic s, 49(15):2784-2796.

Nencioli, F., G. Chang, M. Twardowski, and T.D. Dickey. 2010. Optical characterization of an eddy-induced diatom bloom west of the island of Hawaii. Biogeosciences, 7:151-162.

Gordon, H.R., M.R. Lewis, S.D. McLean, M.S. Twardowski, S.A. Freeman, K.J. Voss, and G.C. Boynton. 2009. Spectra of particulate backscattering in natural waters. Optics Express, 17(18), 16192-16208.

Sullivan, J.M., & M.S. Twardowski. 2009. Angular shape of the volume scattering function in the backwards direction, Applied Optics, 48(35):6811-6819.

Tonizzo, A., J. Zhou, A. Gilerson, M. Twardowski, D. Gray, R. Arnone, B. Gross, F. Moshary, and S. Ahmed. 2009. Polarization measurements in coastal waters: hyperspectral and multiangular analysis. Optics Express, 17, 5666-5683.

Zhang, X., L. Hu, M.S. Twardowski, and J.M. Sullivan. 2009. Scattering by solutions of major sea salts. Optics Express, 17:19580-19585.

Stramski, D., R. Reynolds, M. Babin, H. Claustre, S. Kaczmarek, M. Lewis, R. Rottgers, A. Sciandra, M. Stramska, and M. Twardowski. 2008. Relationships between POC and optical properties of surface waters in the South Pacific and Atlantic Oceans. Biogeosciences, 5: 171-183, www.biogeosciences.net/5/171/2008/.

Glenn, S., C. Jones, M. Twardowski, L. Bowers, J. Kerfoot, J. Kohut, D. Webb, and O. Schofield. 2008. Glider observations of sediment resuspension in a Middle Atlantic Bight fall transition storm. Limnol. Oceanogr., 53(5, part II), 2180-2196.

Huot, Y., A. Morel, M. Twardowski, D. Stramski, and R. Reynolds. 2008. Particle optical backscattering along a chlorophyll gradient in the upper layer of the eastern South Pacific. Biogeosciences, 5:495-507, www.biogeosciences.net/5/495/2008/.

Twardowski, M.S., H. Claustre, S.A. Freeman, D. Stramski, and Y. Huot. 2007. Optical backscattering properties of the “clearest” natural waters. Biogeosciences, 4, 1041–1058, www.biogeosciences.net/4/1041/2007/.

Huot, Y., M. Babin, F. Bruyant, C. Grob, M. S. Twardowski, and H. Claustre. 2007. Does chlorophyll a provide the best index of phytoplankton biomass for primary productivity studies? Biogeosciences, 4:853-868, www.biogeosciences.net/4/853/2007/.

Twardowski, M.S., M. Lewis, A. Barnard, and J.R.V. Zaneveld. 2005. In-water instrumentation and platforms for ocean color remote sensing applications. In: Remote Sensing of Coastal Aquatic Waters, R. Miller and C.E. Del-Castillo [Eds.], Springer-Kluwer Pub., 69–100.

Twardowski, M.S., E. Boss, J.M. Sullivan, and P.L. Donaghay. 2004. Modeling spectral absorption by chromophoric dissolved organic matter (CDOM), Mar. Chem., 89:69–88, doi:10.1016/j.marchem.2004.02.008.

Boss, E., W.S. Pegau, M. Lee, M.S. Twardowski, E. Shybanov, G. Korotaev, and F. Baratange. 2004. The particulate backscattering ratio at LEO 15 and its use to study particles composition and distribution. J. Geophys. Res., 109, C01014, doi:10.1029/2002JC001514.

Twardowski, M.S., E. Boss, J.M. Sullivan, and P.L. Donaghay. 2004. Modeling spectral absorption by chromophoric dissolved organic matter (CDOM). Mar. Chem., 89: 69-88, doi:10.1016/j.marchem.2004.02.008.

Twardowski, M.S., M. Lewis, A. Barnard, and J.R.V. Zaneveld. 2004. In-water instrumentation and platforms for ocean color remote sensing applications. In: Remote Sensing of Coastal Aquatic Waters, R. Miller and C. Del-Castillo [Eds.], Kluwer Publishing, [in press].

Zaneveld, J.R.V., M.S. Twardowski, M. Lewis, and A. Barnard. 2004. Radiative transfer and remote sensing. In: Remote Sensing of Coastal Aquatic Waters, R. Miller and C. Del-Castillo [Eds.], Kluwer Publishing, [in press].

Sullivan, J.M., Twardowski, M.S., Donaghay, P.L., and Freeman, S.A. 2004. Using Scattering Characteristics to Discriminate Particle Types in US Coastal Waters, Appl. Opt. [in press].

Boss, E. W. S. Pegau, M. Lee, M. Twardowski, M. Shibanov, E. Korotev and F. Baratange. 2004. The particulate backscattering ratio at LEO 15 and its use to study particles composition and distribution. J. Geophys. Res., 109, C01014, doi:10.1029/2002JC001514.

Dekshenieks, M.M., A.L. Alldredge, A. Barnard, E. Boss, J. Case, T.J. Cowles, P.L. Donaghay, L.B. Eisner, D.J. Gifford, C.F. Greenlaw, C. Herren, D.V. Holliday, D. Johnson, S. MacIntyre, D. McGehee, T.R. Osborn, M.J. Perry, R. Pieper, J.E.B. Rines, D.C. Smith, J.M. Sullivan, M.K. Talbot, M.S. Twardowski, A. Weidemann, and J.R. Zaneveld. 2003. Characteristics, Distribution and Persistence of Thin Layers Over a 48 Hour Period. Mar. Ecol. Prog. Ser., 261:1–19.

Miller, R., M.S. Twardowski, C. Moore, and C. Casagrande. 2003. The Dolphin: Technology to Support Remote Sensing Bio-optical Algorithm Development and Applications. Backscatter 14(2):8–12.

Eisner, L., M.S. Twardowski, T.J. Cowles, and M.J. Perry. 2003. Resolving phytoplankton photoprotective:photosynthetic carotenoid ratios on fine scales using in situ spectral absorption measurements. Limnol. Oceanogr., 48:632–646.

Rines, J.E.B., P.L. Donaghay, M. Dekshenieks, J.M. Sullivan, and M.S. Twardowski. 2002. Thin layers and camouflage: hidden Pseudo-nitzschia spp. (Bacillariophyceae) populations in a fjord in the San Juan Islands, Washington, U.S.A. Mar. Ecol. Prog. Ser., 225:123–137.

Twardowski, M.S., and P.L. Donaghay. 2002. Photobleaching of aquatic dissolved materials: absorption removal, spectral alteration, and their interrelationship. J. Geophys. Res, 107(C8):6.1–6.12.

Boss, E., W.S. Pegau, W.D. Gardner, J.R.V. Zaneveld, A.H. Barnard, M.S. Twardowski, G.C. Chang, and T.D. Dickey. 2001. Spectral particulate attenuation in the bottom boundary layer of a continental shelf. J. Geophys. Res., 106(C5):9509–9516.

Boss, E., M.S. Twardowski, and S. Herring. 2001. Shape of the particulate beam attenuation spectrum and its inversion to obtain the shape of the particulate size distribution. Appl. Opt., 40:4885–4893.

Dekshenieks, M.M., P.L. Donaghay, J.M. Sullivan, J.E.B. Rines, T.R. Osborn, and M.S. Twardowski. 2001. Temporal and spatial occurrence of thin phytoplankton layers in relation to physical processes. Mar. Ecol. Prog. Ser., 223:61–71.

Twardowski, M.S., and P.L. Donaghay. 2001. Separating in situ and terrigenous sources of absorption by dissolved material in coastal waters. J. Geophys. Res., 106(C2):2545–2560.

Twardowski, M.S., E. Boss, J.B. Macdonald, W.S. Pegau, A.H. Barnard, and J.R.V. Zaneveld. 2001. A model for estimating bulk refractive index from the optical backscattering ratio and the implications for understanding particle composition in Case I and Case II waters. J. Geophys. Res., 106(C7):14,129–14,142.

Twardowski, M.S., J.M. Sullivan, P.L. Donaghay, and J.R.V. Zaneveld. 1999. Microscale quantification of the absorption by dissolved and particulate material in coastal waters with an ac-9. J. Atmos. Ocean. Technol. 16(12):691–707.

PUBLICATIONS: PEER-REVIEWED, WEB ONLY
Twardowski M., Jonasz M. 2006. VSF at the small angles for natural dispersions and power-law slopes (www.tpdsci.com/Tpc/VsfSmlAngNatDspSlp.php). In: Top. Part. Disp. Sci. (www.tpdsci.com).

Twardowski M., Jonasz M. 2006. Power law in spectral scattering by natural dispersions: Derivation (www.tpdsci.com/Tpc/AtnCfSptPwLwNatDsp.php). In: Top. Part. Disp. Sci. (www.tpdsci.com).

Twardowski M., Jonasz M. 2006. Power law in spectral scattering by natural dispersions: Finite range of the particle diameter (www.tpdsci.com/Tpc/AtnCfSptPwLwNatDsp.php). In: Top. Part. Disp. Sci. (www.tpdsci.com).

Twardowski M., Jonasz M. 2006. Power law in spectral scattering and attenuation by natural dispersions (http://www.tpdsci.com/Tpc/ScaCfSptPwLwNatDsp.php). In: Top. Part. Disp. Sci. (www.tpdsci.com).

PUBLICATIONS: dissertation
Twardowski, M.S. 1998. The finescale distribution, origin, and photobleaching of the spectral absorption of dissolved organic matter in coastal waters. University of Rhode Island, Kingston.

PUBLICATIONS: NOT PEER-REVIEWED
Twardowski, M.S. 2000. Ocean research in the ocean state. The Rhode Island Trooper,12(1):107–109.

PUBLICATIONS: EXTENDED ABSTRACTS
Sullivan, J., J. Katz, S. Talapatra, M. Twardowski, J. Hong, and P. Donaghay. 2011. Using in-situ holographic microscopy for ocean particle characterization. Proc. SPIE OCEANS11, Santander, Spain, June 6-10, 2011.

Chang, G., and M. Twardowski. 2010. Point spread functions and visibility: Gaining clarity on image processing in natural waters. Proc. Ocean Optics XX, Anchorage, AK, Sep 27 - Oct 1.

Czerski, H., M. Twardowski, S. Vagle, and M. Slivkoff. 2010. Resolving bubble size distributions and dynamics in near-surface waters with optics and acoustics. Proc. Ocean Optics XX, Anchorage, AK, Sep 27 - Oct 1.

Randolph, K., H. Dierssen, M. Twardowski, C. Zappa, A. Cifuentes-Lorenzen, and S. Freeman. 2010. Optical measurements of bubble populations during large scale wave breaking in the southern ocean and their significance to remote sensing reflectance. Proc. Ocean Optics XX, Anchorage, AK, Sep 27 - Oct 1.

Slivkoff, M., W. Klonowski, M. Twardowski, and S. Freeman. 2010. Determining the near forward volume scattering function from the LISST-100X particle size analyzer. Proc. Ocean Optics XX, Anchorage, AK, Sep 27 - Oct 1.

Spada, F., G. Chang, M. Twardowski, and S. Freeman. 2010. Cost Effective Platforms for the Deployment of Optical Sensors in Dynamic Environments. Proc. Ocean Optics XX, Anchorage, AK, Sep 27 - Oct 1.

Sullivan, M.S. Twardowski, J Katz, J Hong, S Talapatra, and P. Donaghay. 2010. Understanding particle dynamics using in-situ holographic microscopy. Proc. Ocean Optics XX, Anchorage, AK, Sep 27 – Oct.

Talapatra, S., A.R. Nayak, C. Zhang, J. Hong, J. Katz, M. Twardowski, J. Sullivan, and P. Donaghay. 2010. Characterization of organisms, particles, and bubbles in the water column using a free-drifting, submersible, digital holography system. Proc. Ocean Optics XX, Anchorage, AK, Sep 27 - Oct 1.

Twardowski, M., X. Zhang, S. Freeman, M. Slivkoff, J. Sullivan, H. Czerski, S. Vagle, Y. You, and G. Kattawar. 2010. Inverting the Volume Scattering Function to Infer Particle Composition at the Near-Surface. Proc. Ocean Optics XX, Anchorage, AK, Sep 27 - Oct 1.

Zhou, J., A. Tonizzo, A. Gilerson, M. Twardowski, D. Gray, A. Weidemann, R. Arnone, B. Gross, F. Moshary, and S. Ahmed. 2009. Polarization characteristics of coastal waters and their impact on in-water visibility. Ocean Sensing and Monitoring Conference, edited by Weilin (Will) Hou, Proc. of SPIE Vol. 7317, 73170H.

Bell, J., M. Twardowski, C. Moore, and A. Barnard. 2008. Comprehensive optical merge processing and acquisition software system (COMPASS) for comprehensive user correction of WET Labs absorption and attenuation data. Proceedings of Ocean Optics XIX, October 6-9, Barga, Italy.

Moore, C., J. Koegler, W. Strubhar, M. Twardowski, A. Barnard, A. Derr, and R. Zaneveld. 2008. The next generation beam attenuation meter (BAM) for autonomous underwater vehicles. Proceedings of Ocean Optics XIX, October 6-9, Barga, Italy.

Nencioli, F., G. Chang-Spada, and M. Twardowski. 2008. Optical Characterization of an Eddy Induced Diatom Bloom West of the Island of Hawaii. Proceedings of Ocean Optics XIX, October 6-9, Barga, Italy.

Sciandre, A., D. Stramski, M. Babin, M. Twardowski, and C. Grob. 2008. Diel and spatial variability of particle size distribution in the eastern south Pacific. Proceedings of Ocean Optics XIX, October 6-9, Barga, Italy.

Tonizzo, A., J. Zhou, A. Gilerson, T. Iijima, M. Twardowski, D. Gray, R. Arnone, B. Gross, F. Moshary, and S. Ahmed.2008. Polarization measurements in coastal waters using hyperspectral multi-angular sensor. Proceedings of Ocean Optics XIX, October 6-9, Barga, Italy.

Twardowski, M., S. Freeman, X. Zhang, S. Vagle, and R. Zaneveld. 2008. Resolving surf zone particle dynamics with high sampling rate volume scattering function measurements. Proceedings of Ocean Optics XIX, October 6-9, Barga, Italy.

Zhang, X., M. Twardowski, C. Hu, and M. Lewis. 2008. Retrieving size and optical properties of individual particle populations from the volume scattering function. Proceedings of Ocean Optics XIX, October 6-9, Barga, Italy.

Aurin, D., H. Dierssen, and M. Twardowski. 2006. Absorption, Backscatter and Chlorophyll Algorithms for Ocean Color Remote Sensing in Long Island Sound. Proceedings of Ocean Optics XVIII, October 9-13, Montreal, Canada.

Zaneveld, J.R.V, M.S. Twardowski, and C. Moore. 2006. Total scattering coefficient meter. Proceedings of Ocean Optics XVIII, October 9-13, Montreal, Canada.

Trees, C.C., P.W. Bissett, H,. Dierssen, D.D.R. Kohler, M.A. Moline, J.L. Mueller, R.E. Pieper, M.S. Twardowski, and J.R.V. Zaneveld. 2005. Monitoring water transparency and diver visibility in ports and harbors using aircraft hyperspectral remote sensing. Prodeedings from SPIE Port and Harbor Security Conference, Vol. 5780, February, Orlando, FL.

Twardowski, M.S., J.R.V. Zaneveld, C.M. Moore, J. Mueller, C. Trees, O. Schofield, S. Freeman, T. Helble, and G. Hong. 2005. Diver visibility measured with a compact scattering-attenuation meter (SAM) compatible with AUVs and other small deployment platforms. Prodeedings from SPIE Port and Harbor Security Conference, Vol. 5780, February, Orlando, FL.

Moore, C., J. Da Cuhna, B. Rhoades, M.S. Twardowski, J.R.V. Zaneveld, J. Dombroski. 2004. A new in-situ measurement and analysis system for excitation-emission fluorescence in natural waters. Proceedings of Ocean Optics XVII, October 25-29, Freemantle, Australia.

Schofield, O., J. Kohut, J. Kerfoot, L. Creed, C. Mugdal, S. Glenn, M. Twardowski, C. Jones, and D. Webb. 2004. Dawn in the age of ocean robots: what can they see? Proceedings of Ocean Optics XVII, October 25-29, Freemantle, Australia.

Sullivan, J.M., M.S. Twardowski, J.R.V. Zaneveld, C. Moore, B. Rhoades, and R. Miller. 2004. The hyperspectral temperature and salinity dependent absorption coefficients of pure water. Proceedings of Ocean Optics XVII, October 25-29, Freemantle, Australia.

Twardowski, M.S., and J.R.V. Zaneveld. 2004. Progress toward a Generalized Optical-Biogeochemical Inversion (GOBI) for natural waters. Proceedings of Ocean Optics XVII, October 25-29, Freemantle, Australia.

Zaneveld, J.R.V., C. Moore, A.H. Barnard, M.S. Twardowski, and G.C. Chang. 2004. Correction and analysis of spectral absorption data taken with the WET Labs AC-S. Proceedings of Ocean Optics XVII, October 25-29, Freemantle, Australia.

Gould, R.W., R.H. Stavn, M.S. Twardowski, and G.M. Lamella. 2002. Partitioning optical properties into organic and inorganic components from ocean color imagery. Proceedings from Ocean Optics XVI, November 18–22, Santa Fe.

Sullivan, J.M., M.S. Twardowski, P.L. Donaghay, and S. Freeman. 2002. Particulate bulk refractive index distributions in coastal regions as determined from backscattering ratio measurements. Proceedings from Ocean Optics XVI, November 18–22, Santa Fe.

Zaneveld, J.R.V., M.S. Twardowski, K.S. Shifrin, W.S. Pegau, E. Boss, and I. Zolotov. 2002. Inversion of light scattering measurements to obtain biogeochemical parameters. Proceedings from Ocean Optics XVI, November 18-22, Santa Fe.

Boss, E., and M.S. Twardowski. 2000. On the relationship of the particulate beam attenuation spectrum and size distribution of oceanic particles. Proceedings from Ocean Optics XV, October 16-20, Monaco.

Coleman, J.E., R.A. Reynolds, M.C. Talbot, M.S. Twardowski, M.J. Perry. 2000. Utilization of solar-induced chlorophyll a fluorescence as an indicator of phytoplankton biomass in coastal waters. Proceedings from Ocean Optics XV, October 16-20, Monaco.

Eisner, L., M.S. Twardowski, and T.J. Cowles. 2000. In situ spectral absorption (ac-9) measurements as an index of photoprotective/photosynthetic carotenoid ratios. Proceedings from Ocean Optics XV, October 16-20, Monaco.

Moore, C., M.S. Twardowski, and J.R.V. Zaneveld. 2000. The ECO VSF - A multi-angle scattering sensor for determination of the volume scattering function in the backward direction. Proceedings from Ocean Optics XV, October 16-20, Monaco.

Twardowski, M.S., E. Boss, J.B. Macdonald, W.S. Pegau, A.H. Barnard, and J.R.V. Zaneveld. 2000. A model for retrieving oceanic particle composition and size distribution from measurements of the backscattering ratio and spectral attenuation. Proceedings from Ocean Optics XV, October 16-20, Monaco.

Twardowski, M.S., and P.L. Donaghay. 1998. The spectral signature associated with the photobleaching of CDOM absorption. Proceedings from Ocean Optics XIV, November 10-13, Kona, HA.

Twardowski, M.S., R.C. Moyer, and M.A. Uddin. 1992. Formaldehyde abatement from air with a microbial community. Proceedings from the Texas Academy of Science, Mar 6-7.

Twardowski, M.S., J.R.V. Zaneveld, and C. Moore. 2002.  A novel technique for determining beam attenuation compatible with a small sensor form factor and compact deployment platforms. Proceedings from Ocean Optics XVI, November 18–22, Santa Fe.

Zaneveld, J.R.V., M.S. Twardowski, K.S. Shifrin, W.S. Pegau, E. Boss, and I. Zolotov. 2002.  Inversion of light scattering measurements to obtain biogeochemical parameters (plenary talk). Proceedings from Ocean Optics XVI, November 18–22, Santa Fe.

Boss, E., and M.S. Twardowski. 2000. On the relationship of the particulate beam attenuation spectrum and size distribution of oceanic particles. Proceedings from Ocean Optics XV, October 16–20, Monaco.

Coleman, J.E., R.A. Reynolds, M.C. Talbot, M.S. Twardowski, M.J. Perry. 2000. Utilization of solar-induced chlorophyll a fluorescence as an indicator of phytoplankton biomass in coastal waters. Proceedings from Ocean Optics XV, October 16–20, Monaco.

Eisner, L., M.S. Twardowski, and T.J. Cowles. 2000. In situ spectral absorption (ac-9) measurements as an index of photoprotective/photosynthetic carotenoid ratios. Proceedings from Ocean Optics XV, October 16–20, Monaco.

Moore, C., M.S. Twardowski, and J.R.V. Zaneveld. 2000. The ECO VSF - A multi-angle scattering sensor for determination of the volume scattering function in the backward direction. Proceedings from Ocean Optics XV, October 16–20, Monaco.

Twardowski, M.S., E. Boss, J.B. Macdonald, W.S. Pegau, A.H. Barnard, and J.R.V. Zaneveld. 2000. A model for retrieving oceanic particle composition and size distribution from measurements of the backscattering ratio and spectral attenuation. Proceedings from Ocean Optics XV, October 16–20, Monaco.

Twardowski, M.S., and P.L. Donaghay. 1998. The spectral signature associated with the photobleaching of CDOM absorption. Proceedings from Ocean Optics XIV, November 10–13, Kona, HI.

Twardowski, M.S., R.C. Moyer, and M.A. Uddin.  1992. Formaldehyde abatement from air with a microbial community. Proceedings from the Texas Academy of Science, March 6–7.

CONFERENCE ABSTRACTS
Twardowski, M.S., and E. Boss. 2002. Inversion of Inherent Optical Properties to infer biogeochemical properties of particles. Invited speaker, European Geophysical Society Meeting, Nice, France, April 22–26.

Twardowski, M.S., and E. Boss. 2002. The optical effects of CDOM sorption to particles. Ocean Sciences Meeting, Honolulu, HI, February 12–16.

Boss, E., W.S. Pegau, M. Lee, M.S. Twardowski, E. Shibanov, G. Korotaev, F. Baratange. 2001. Measurements of the phase function and their implication for inferring the bulk particulate index of refraction at LEO-15. ASLO Aquatic Sciences Meeting, Albuquerque, NM, February 12–16.

Boss, E., W.S. Pegau, M.S. Twardowski, W.D. Gardner, J.R.V. Zaneveld, A.H. Barnard, G.C. Chang, and T.D. Dickey. 2000. Spectral particulate attenuation in the bottom boundary layer of a continental shelf. EOS 80:118.

Macdonald, J.B., M.S. Twardowski, W.S. Pegau, A.H. Barnard, E. Boss, and J.R.V. Zaneveld. 2000. Characterization of spectral backscattering in the Gulf of California. AGU meeting, San Antonio, TX, January, 24-28.

Moore, C., W.D. Stuhbar, M.S. Twardowski, and J.R.V. Zaneveld. 2000. A new sensor for obtaining optical backscattering through determination of scattering at 3 angles in the backward hemisphere. AGU meeting, San Antonio, TX, January, 24–28.

Twardowski, M.S., P.L. Donaghay, R.A. Desiderio, and T.J. Cowles. 2000. Rapid, in situ formation of recalcitrant, chromophoric DOC. AGU meeting, San Antonio, TX, January, 24–28.

Boss, E., M.S. Twardowski, A. Barnard, and W. Pegau. 1999. Conservative and non-conservative behavior of optical properties in an inlet. ASLO Aquatic Sciences Meeting, February 1–5, Santa Fe, NM, p. 28.

Cowles, T.J., R.A. Desiderio, M.S. Twardowski, C.E. Wingard, and L.B. Eisner. 1999. Temporal evolution in the composition and structure of small-scale planktonic layers. ASLO Aquatic Sciences Meeting, February 1–5, Santa Fe, NM, p. 50.

Eisner, L.B., M.S. Twardowski, and T.J. Cowles. 1999. Phytoplankton pigment composition in relation to finescale optical properties in East Sound, Orcas Island, Washington. ASLO Aquatic Sciences Meeting, February 1–5, Santa Fe, NM, p. 61.

Radlinski, A.P., D.S. Edwards, N. Crawford, G.W. O’Brien, W.J.A. Witham, and M.S. Twardowski. 1999. Fluorimetry: new tools for petroleum exploration.  Meeting of the American Association of Petroleum Geologists, Houston, TX.

Twardowski, M.S., R.A. Desiderio, P.L. Donaghay, and T.J. Cowles. 1999. Using finescale, in situ optical measurements to characterize DOM pool signatures in coastal waters. ASLO Aquatic Sciences Meeting, February 1–5, Santa Fe, NM, p. 181.

Dekshenieks, M.M., P.L. Donaghay, J.M. Sullivan, M.S. Twardowski, and J.E.B. Rines. 1998. Spatial and temporal occurrence of thin phytoplankton layers in relation to environmental forcing. EOS 79(1):176.

Donaghay, P.L., M.M. Dekshenieks, J.E.B. Rines, J.M. Sullivan, M.S. Twardowski, and D.V. Holliday. 1998. Physical and biological control of the formation, maintenance and dissipation of thin phytoplankton layers in the pycnoclines of stratified coastal waters. EOS 79(1):175.

Merrell, J.R., D.J. Gifford, P.L. Donaghay, M.M. Dekshenieks, M.S. Twardowski, and J.M. Sullivan. 1998. Fine-scale vertical distributions of microplankton in thin layers. EOS 79(1):186.

Rines, J.E.B., J.M. Sullivan, P.L. Donaghay, M.M. Dekshenieks, and M.S. Twardowski. 1998. Physical mixing processes and phytoplankton species composition of finescale bio-optical structures in coastal waters. EOS 79(1):147.

Twardowski, M.S., P.L. Donaghay, J.M. Sullivan, M.M. Dekshenieks, and J.E.B. Rines. 1998. Finescale production of chromophoric DOM associated with a persistent phytoplankton thin layer. EOS 79(1):176.

Dekshenieks, M.M., M.S. Twardowski, P.L. Donaghay, J.M. Sullivan, and J.E.B. Rines. 1997. Physical flow fields and phytoplankton distributions: implications for transport. ASLO Aquatic Sciences Meeting, February 10–14, Santa Fe, NM, p.143.

Donaghay, P.L., M.M. Dekshenieks, M.S. Twardowski, J.M. Sullivan, J.E.B. Rines, J. Katz, J. Zhang, S. King. 1997. Quantification of the zooplankton ambit. ASLO Aquatic Sciences Meeting, February 10–14, Santa Fe, NM, p.148.

Twardowski, M.S., J.M. Sullivan, M.M. Dekshenieks, J.E.B. Rines, and P.L. Donaghay. 1997. Spectral dissolved absorption signatures in coastal waters. ASLO Aquatic Sciences Meeting, February 10–14, Santa Fe, NM, p.327.

Donaghay, P.L., M.S. Twardowski, J.M. Sullivan, J.E.B. Rines, and A.K. Hanson. 1996. Optical layers in an isotropic coastal ocean: an ephemeral phenomenon or an inappropriate physical model? EOS 76(3):104.

Twardowski, M.S., J.M. Sullivan, and P.L. Donaghay. 1996. Spectral dissolved absorption measurements in the visible domain: resolving fine scale structure and dynamics in time and space. EOS 76(3):94.

PROFESSIONAL AWARDS
WET Labs Postdoctoral Fellowship, 1998.

Early Career Faculty Award, Office of International Research and Development, Oregon State University , 2000.

ASEE Visiting Faculty Fellowship, Naval Research Labs, Stennis Space Center (R. Arnone, A. Weidemann) and Washington, D.C., (Curt Davis), 2000.

Adjunct Professor, University of Rhode Island , 2003.

Adjunct Professor, University of Connecticut , 2005.

NATO Visiting Researcher Fellowship, Naval Underwater Research Centre, La Spezia , Italy , 2010.