Research Summary
Research focus is on the impact of climate change on coastal regions, especially estuaries of the Mid-Atlantic Region of the U.S. with a specific interest in how climate change, through changing streamflow patterns, and sea-level rise, alters the salinity.
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Research Keywords
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Projects
Recent Publications
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
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
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
Seasonal Variability of the CO2 System in a Large Coastal Plain Estuary
Friedman, J. R., Shadwick, E. H., Friedrichs, M. A. M., Najjar, R. G., De Meo, O. A., Da, F. & Smith, J. L., Jan 1 2020, In: Journal of Geophysical Research: Oceans. 125, 1, e2019JC015609.Research output: Contribution to journal › Article › peer-review
Challenges in Quantifying Air-Water Carbon Dioxide Flux Using Estuarine Water Quality Data: Case Study for Chesapeake Bay
Herrmann, M., Najjar, R. G., Da, F., Friedman, J. R., Friedrichs, M. A. M., Goldberger, S., Menendez, A., Shadwick, E. H., Stets, E. G. & St-Laurent, P., Jul 1 2020, In: Journal of Geophysical Research: Oceans. 125, 7, e2019JC015610.Research output: Contribution to journal › Article › peer-review
Carbon Deposition and Burial in Estuarine Sediments of the Contiguous United States
Hutchings, J. A., Bianchi, T. S., Najjar, R. G., Herrmann, M., Kemp, W. M., Hinson, A. L. & Feagin, R. A., Feb 1 2020, In: Global Biogeochemical Cycles. 34, 2, e2019GB006376.Research output: Contribution to journal › Article › peer-review
Alkalinity in Tidal Tributaries of the Chesapeake Bay
Najjar, R. G., Herrmann, M., Cintrón Del Valle, S. M., Friedman, J. R., Friedrichs, M. A. M., Harris, L. A., Shadwick, E. H., Stets, E. G. & Woodland, R. J., Jan 1 2020, In: Journal of Geophysical Research: Oceans. 125, 1, e2019JC015597.Research output: Contribution to journal › Article › peer-review