Research Summary
I conduct research on a variety of topics in oceanography, climate science, and hydrology, with current interests focused on how coastal waters are influenced by climate change and pollution.
In the News
Research Keywords
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Projects
Recent Publications
Impacts and uncertainties of climate-induced changes in watershed inputs on estuarine hypoxia
Hinson, K. E., Friedrichs, M. A. M., Najjar, R. G., Herrmann, M., Bian, Z., Bhatt, G., St-Laurent, P., Tian, H. & Shenk, G., May 26 2023, In: Biogeosciences. 20, 10, p. 1937-1961 25 p.Research output: Contribution to journal › Article › peer-review
Coastal vegetation and estuaries are collectively a greenhouse gas sink
Rosentreter, J. A., Laruelle, G. G., Bange, H. W., Bianchi, T. S., Busecke, J. J. M., Cai, W. J., Eyre, B. D., Forbrich, I., Kwon, E. Y., Maavara, T., Moosdorf, N., Najjar, R. G., Sarma, V. V. S. S., Van Dam, B. & Regnier, P., Jun 2023, In: Nature Climate Change. 13, 6, p. 579-587 9 p.Research output: Contribution to journal › Article › peer-review
Decoupling of Estuarine Hypoxia and Acidification as Revealed by Historical Water Quality Data
Shen, C., Testa, J. M., Herrmann, M. & Najjar, R. G., Jan 10 2023, In: Environmental Science and Technology. 57, 1, p. 780-789 10 p.Research output: Contribution to journal › Article › peer-review
Increased Terrestrial Carbon Export and CO2 Evasion From Global Inland Waters Since the Preindustrial Era
Tian, H., Yao, Y., Li, Y., Shi, H., Pan, S., Najjar, R. G., Pan, N., Bian, Z., Ciais, P., Cai, W. J., Dai, M., Friedrichs, M. A. M., Li, H. Y., Lohrenz, S. & Leung, L. R., Oct 2023, In: Global Biogeochemical Cycles. 37, 10, e2023GB007776.Research output: Contribution to journal › Article › peer-review
Extent and Causes of Chesapeake Bay Warming
Hinson, K. E., Friedrichs, M. A. M., St-Laurent, P., Da, F. & Najjar, R. G., Dec 2022, In: Journal of the American Water Resources Association. 58, 6, p. 805-825 21 p.Research output: Contribution to journal › Article › peer-review
The land-to-ocean loops of the global carbon cycle
Regnier, P., Resplandy, L., Najjar, R. G. & Ciais, P., Mar 17 2022, In: Nature. 603, 7901, p. 401-410 10 p.Research output: Contribution to journal › Review article › peer-review
Estimating estuarine primary production using satellite data and machine learning
Xu, M., Hu, C., Najjar, R. G., Herrmann, M., Briceno, H., Barnes, B. B., Roger Johansson, J. O. & English, D., Jun 2022, In: International Journal of Applied Earth Observation and Geoinformation. 110, 102821.Research output: Contribution to journal › Article › peer-review
Mechanisms Driving Decadal Changes in the Carbonate System of a Coastal Plain Estuary
Da, F., Friedrichs, M. A. M., St-Laurent, P., Shadwick, E. H., Najjar, R. G. & Hinson, K. E., Jun 2021, In: Journal of Geophysical Research: Oceans. 126, 6, e2021JC017239.Research output: Contribution to journal › Article › peer-review
Triple oxygen isotope constraints on atmospheric O2and biological productivity during the mid-Proterozoic
Liu, P., Liu, J., Ji, A., Reinhard, C. T., Planavsky, N. J., Babikov, D., Najjar, R. G. & Kasting, J. F., Dec 21 2021, In: Proceedings of the National Academy of Sciences of the United States of America. 118, 51, e2105074118.Research output: Contribution to journal › Article › peer-review
Estuaries as Filters for Riverine Microplastics: Simulations in a Large, Coastal-Plain Estuary
López, A. G., Najjar, R. G., Friedrichs, M. A. M., Hickner, M. A. & Wardrop, D. H., Aug 26 2021, In: Frontiers in Marine Science. 8, 715924.Research output: Contribution to journal › Article › peer-review
Impacts of Multiple Environmental Changes on Long-Term Nitrogen Loading From the Chesapeake Bay Watershed
Pan, S., Bian, Z., Tian, H., Yao, Y., Najjar, R. G., Friedrichs, M. A. M., Hofmann, E. E., Xu, R. & Zhang, B., May 2021, In: Journal of Geophysical Research: Biogeosciences. 126, 5, e2020JG005826.Research output: Contribution to journal › Article › peer-review
A Metamodel-Based Analysis of the Sensitivity and Uncertainty of the Response of Chesapeake Bay Salinity and Circulation to Projected Climate Change
Ross, A. C., Najjar, R. G. & Li, M., Jan 2021, In: Estuaries and Coasts. 44, 1, p. 70-87 18 p.Research output: Contribution to journal › Article › peer-review
Correction to: A Metamodel-Based Analysis of the Sensitivity and Uncertainty of the Response of Chesapeake Bay Salinity and Circulation to Projected Climate Change (Estuaries and Coasts, (2021), 44, 1, (70-87), 10.1007/s12237-020-00761-w)
Ross, A. C., Najjar, R. G. & Li, M., Jul 2021, In: Estuaries and Coasts. 44, 5, p. 1492 1 p.Research output: Contribution to journal › Comment/debate › peer-review
Riverine Carbon Cycling Over the Past Century in the Mid-Atlantic Region of the United States
Yao, Y., Tian, H., Pan, S., Najjar, R. G., Friedrichs, M. A. M., Bian, Z., Li, H. Y. & Hofmann, E. E., May 2021, In: Journal of Geophysical Research: Biogeosciences. 126, 5, e2020JG005968.Research output: Contribution to journal › Article › peer-review
Tidal Wetland Gross Primary Production Across the Continental United States, 2000–2019
Feagin, R. A., Forbrich, I., Huff, T. P., Barr, J. G., Ruiz-Plancarte, J., Fuentes, J. D., Najjar, R. G., Vargas, R., Vázquez-Lule, A., Windham-Myers, L., Kroeger, K. D., Ward, E. J., Moore, G. W., Leclerc, M., Krauss, K. W., Stagg, C. L., Alber, M., Knox, S. H., Schäfer, K. V. R., Bianchi, T. S., & 9 others, Feb 1 2020, In: Global Biogeochemical Cycles. 34, 2, e2019GB006349.Research output: Contribution to journal › Article › peer-review