The University of Maine Maine In-situ Sound & Color Lab
School of Marine Sciences
Nils Haentjens
Nils Haëntjens
Postdoc, Oceanography

Research Interest

Study the composition of the open ocean with optical measurements. Development of oceanographic instruments.

  • PhD 2020, Oceanography, University of Maine, Orono, ME
  • MS 2017, Oceanography, University of Maine, Orono, ME
  • MS 2015, Embedded Systems Engineering, ISEP, Paris, France

Peer-Reviewed Scientific Articles
Chase, A. P., Boss, E. S., Haëntjens, N., Culhane, E., Roesler, C., Karp-Boss, L. (2022). Plankton Imagery Data Inform Satellite-Based Estimates of Diatom Carbon. Geophysical Research Letters, e2022GL098076. PDF
Haëntjens, N., Boss, E. S., Graff, J. R., Chase, A. P., & Karp‐Boss, L. (2022). Phytoplankton size distributions in the western North Atlantic and their seasonal variability. Limnology and Oceanography. PDF
Haëntjens, N., Forsythe, K., Denholm, B., Loftin, J., & Boss, E. (2022). pySAS: Autonomous Solar Tracking System for Surface Water Radiometric Measurements. Oceanography. PDF
de Vargas, C., Le Bescot, N., Pollina, T., Henry, N., Romac, S., Colin, S., Haëntjens, N., ... Prakash, M. (2022) M. Plankton Planet: a frugal, cooperative measure of aquatic life at the planetary scale. Frontiers in Marine Science, 1419. 10.3389/fmars.2022.936972 PDF

Diaz, B.P., Knowles, B., Johns, C.T., Laber, C.P., Bondoc, K. G. V., Haramaty, L., Natale, F., Harvey, E. L., Kramer, S. J., Bolaños, L.M., Lowenstein, D. P., Fredricks, H. F., Graff, J., Westberry, T. K., Mojica, K. D. A., Haëntjens, N., Baetge, N., Gaube, P., Boss, E., Carlson, C. A., Behrenfeld, M. J., Van Mooy, B. A. S., & Bidle, K. D., (2021). Seasonal mixed layer depth shapes phytoplankton physiology, viral production, and accumulation in the North Atlantic. Nature communications, 1, 6634. PDF
Flores, J. M., Bourdin, G., Kostinski, A. B., Altaratz, O., Dagan, G., Lombard, F., Haëntjens, N., Boss, E., Sullivan, M.B., Gorsky, G., Lang-Yona, N., Trainic, M., Romac, S., Voolstra, C., Rudich, Y., Vardi, A., & Koren, I. (2021). Diel cycle of sea spray aerosol concentration. Nature communications, 12(1), 1-12. PDF
Freney, E., Sellegri, K., Nicosia, A., Williams, L. R., Rinaldi, M., Trueblood, J. T., Prévôt, A. S. H., Thyssen, M., Grégori, G., Haëntjens, N., Dinasquet, J., Obernosterer, I., Van Wambeke, F., Engel, A., Zäncker, B., Desboeufs, K., Asmi, E., Timonen, H., & Guieu, C. (2021). Mediterranean nascent sea spray organic aerosol and relationships with seawater biogeochemistry. Atmospheric Chemistry and Physics, 21(13), 10625–10641. PDF
Marañón, E., Van Wambeke, F., Uitz, J., Boss, E. S., Dimier, C., Dinasquet, J., Engel, A., Haëntjens, N., Pérez-Lorenzo, M., Taillandier, V., & Zäncker, B. (2021). Deep maxima of phytoplankton biomass, primary production and bacterial production in the Mediterranean Sea. Biogeosciences, 18(5), 1749–1767. PDF
Sellegri, K., Nicosia, A., Freney, E., Uitz, J., Thyssen, M., Grégori, G., Engel, A., Zäncker, B., Haëntjens, N., Mas, S., Picard, D., Saint-Macary, A., Peltola, M., Rose, C., Trueblood, J., Lefevre, D., D’Anna, B., Desboeufs, K., Meskhidze, N., … Law, C. S. (2021). Surface ocean microbiota determine cloud precursors. Scientific Reports, 11(1), 281. PDF
Siegel, D. A., Cetinić, I., Graff, J. R., Lee, C. M., Nelson, N., Perry, M. J., Ramos, I. S., Steinberg, D. K., Buesseler, K., Hamme, R., Fassbender, A. J., Nicholson, D., Omand, M. M., Robert, M., Thompson, A., Amaral, V., Behrenfeld, M., Benitez-Nelson, C., Bisson, K., …, Haëntjens, N., … Zhang, X. (2021). An operational overview of the EXport Processes in the Ocean from RemoTe Sensing (EXPORTS) Northeast Pacific field deployment. Elementa: Science of the Anthropocene, 9(1), 00107. PDF
Yang, B., Fox, J., Behrenfeld, M. J., Boss, E. S., Haëntjens, N., Halsey, K. H., Emerson, S. R., & Doney, S. C. (2021). In Situ Estimates of Net Primary Production in the Western North Atlantic With Argo Profiling Floats. Journal of Geophysical Research: Biogeosciences, 126(2). PDF

Bolaños, L. M., Karp-Boss, L., Choi, C. J., Worden, A. Z., Graff, J. R., Haëntjens, N., Chase, A. P., Della Penna, A., Gaube, P., Morison, F., Menden-Deuer, S., Westberry, T. K., O’Malley, R. T., Boss, E., Behrenfeld, M. J., & Giovannoni, S. J. (2020). Small phytoplankton dominate western North Atlantic biomass. The ISME Journal, 14(7), 1663–1674. PDF
Chase, A. P., Kramer, S. J., Haëntjens, N., Boss, E. S., Karp‐Boss, L., Edmondson, M., & Graff, J. R. (2020). Evaluation of diagnostic pigments to estimate phytoplankton size classes. Limnology and Oceanography: Methods, lom3.10385. PDF
Fox, J., Behrenfeld, M. J., Haëntjens, N., Chase, A., Kramer, S. J., Boss, E., Karp-Boss, L., Fisher, N. L., Penta, W. B., Westberry, T. K., & Halsey, K. H. (2020). Phytoplankton Growth and Productivity in the Western North Atlantic: Observations of Regional Variability From the NAAMES Field Campaigns. Frontiers in Marine Science, 7, 24. PDF
Haëntjens, N., & Boss, E. (2020). Inlinino: A Modular Software Data Logger for Oceanography. Oceanography, 33(1), 80–84. PDF
Haëntjens, N., Della Penna, A., Briggs, N., Karp‐Boss, L., Gaube, P., Claustre, H., & Boss, E. (2020). Detecting Mesopelagic Organisms Using Biogeochemical‐Argo Floats. Geophysical Research Letters, 47(6). PDF
Schulien, J. A., Della Penna, A., Gaube, P., Chase, A. P., Haëntjens, N., Graff, J. R., Hair, J. W., Hostetler, C. A., Scarino, A. J., Boss, E. S., Karp-Boss, L., & Behrenfeld, M. J. (2020). Shifts in Phytoplankton Community Structure Across an Anticyclonic Eddy Revealed From High Spectral Resolution Lidar Scattering Measurements. Frontiers in Marine Science, 7, 493. PDF
Yang, B., Boss, E. S., Haëntjens, N., Long, M. C., Behrenfeld, M. J., Eveleth, R., & Doney, S. C. (2020). Phytoplankton Phenology in the North Atlantic: Insights From Profiling Float Measurements. Frontiers in Marine Science, 7, 139. PDF

Boss, E., Haëntjens, N., Ackleson, S. G., Balch, B., Chase, A., Dall’Olmo, G., Freeman, S., Liu, Y., Loftin, J., Neary, W., Nelson, N., Novak, M., Slade, W. H., Proctor, C., Tortell, P., & Westberry, T. K. (2019). IOCCG Ocean Optics and Biogeochemistry Protocols for Satellite Ocean Colour Sensor Validation Inherent Optical Property Measurements and Protocols: Best Practices for the Collection and Processing of Ship-Based Underway Flow-Through Optical Data (v4. 0): Vol. 4.0 (A. R. Neeley & A. Mannino, Eds.). OCCG Protocol Series. PDF
Gorsky, G., Bourdin, G., Lombard, F., Pedrotti, M. L., Audrain, S., Bin, N., Boss, E., Bowler, C., Cassar, N., Caudan, L., Chabot, G., Cohen, N. R., Cron, D., De Vargas, C., Dolan, J. R., Douville, E., Elineau, A., Flores, J. M., Ghiglione, J. F., Haëntjens, N., … Karsenti, E. (2019). Expanding Tara Oceans Protocols for Underway, Ecosystemic Sampling of the Ocean-Atmosphere Interface During Tara Pacific Expedition (2016–2018). Frontiers in Marine Science, 6, 750. PDF
Saliba, G., Chen, C.-L., Lewis, S., Russell, L. M., Rivellini, L.-H., Lee, A. K. Y., Quinn, P. K., Bates, T. S., Haëntjens, N., Boss, E. S., Karp-Boss, L., Baetge, N., Carlson, C. A., & Behrenfeld, M. J. (2019). Factors driving the seasonal and hourly variability of sea-spray aerosol number in the North Atlantic. Proceedings of the National Academy of Sciences, 116(41), 20309–20314. PDF

Arteaga, L., Haëntjens, N., Boss, E., Johnson, K. S., & Sarmiento, J. L. (2018). Assessment of Export Efficiency Equations in the Southern Ocean Applied to Satellite‐Based Net Primary Production. Journal of Geophysical Research: Oceans, 123(4), 2945–2964. PDF
Boss, E., Haëntjens, N., Westberry, T. K., Karp-Boss, L., & Slade, W. H. (2018). Validation of the particle size distribution obtained with the laser in-situ scattering and transmission (LISST) meter in flow-through mode. Optics Express, 26(9), 11125. PDF

Haëntjens, N., Boss, E., & Talley, L. D. (2017). Revisiting Ocean Color algorithms for chlorophyll a and particulate organic carbon in the Southern Ocean using biogeochemical floats. Journal of Geophysical Research: Oceans, 122(8), 6583–6593. PDF
Johnson, K. S., Plant, J. N., Coletti, L. J., Jannasch, H. W., Sakamoto, C. M., Riser, S. C., Swift, D. D., Williams, N. L., Boss, E., Haëntjens, N., Talley, L. D., & Sarmiento, J. L. (2017). Biogeochemical sensor performance in the SOCCOM profiling float array. Journal of Geophysical Research: Oceans, 122(8), 6416–6436. PDF
Roesler, C., Uitz, J., Claustre, H., Boss, E., Xing, X., Organelli, E., Briggs, N., Bricaud, A., Schmechtig, C., Poteau, A., D’Ortenzio, F., Ras, J., Drapeau, S., Haëntjens, N., & Barbieux, M. (2017). Recommendations for obtaining unbiased chlorophyll estimates from in situ chlorophyll fluorometers: A global analysis of WET Labs ECO sensors: Unbiased chlorophyll from in situ fluorometers. Limnology and Oceanography: Methods, 15(6), 572–585. PDF

Gerbi, G. P., Boss, E., Werdell, P. J., Proctor, C. W., Haëntjens, N., Lewis, M. R., Brown, K., Sorrentino, D., Zaneveld, J. R. V., Barnard, A. H., Koegler, J., Fargher, H., DeDonato, M., & Wallace, W. (2016). Validation of Ocean Color Remote Sensing Reflectance Using Autonomous Floats. Journal of Atmospheric and Oceanic Technology, 33(11), 2331–2352. PDF
Released Software
  • Inlinino: Data logger for oceanographic instruments (e.g., ACS, HyperBB, LISST, BB3)
  • Inline-Analysis: Matlab software to process data from flow-through underway systems (e.g. ACS, BB3, LISST, WSCD, HyperBB, SUVF, TSG).
  • getOC: Command line utility to download Ocean Color images.
  • pySAS: Autonomous solar tracker for Satlantic HyperSAS.
  • HyperNAV analysis: Analysis in real-time of hyperspectral upwelling radiance profiles from HyperNAV system mounted on Navis floats.
  • pylr2: Linear regression type II for python.
  • MISCToolbox: Matlab Toolbox for Ocean Optics
  • ifcb-tools: Set of scripts and instructions to process data from the Imaging Flow CytoBot (IFCB)
  • FloatExplorer: Dashboard of NAAMES profilers (RUDICS server)
  • FloatProcess: Python package to process data from BGC-Argo floats in real-time

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Website last updated: 18-Mar-14