Raymond Najjar

Affiliate Researcher
Titles and Affiliations
Professor, Meteorology and Atmospheric Science

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.

In the News

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 journalArticlepeer-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 journalArticlepeer-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 journalReview articlepeer-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 journalArticlepeer-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 journalArticlepeer-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 journalArticlepeer-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 journalArticlepeer-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 journalArticlepeer-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 journalComment/debatepeer-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 journalArticlepeer-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 othersHutchings, J. A., Nahrawi, H., Noormets, A., Mitra, B., Jaimes, A., Hinson, A. L., Bergamaschi, B., King, J. S. & Miao, G., Feb 1 2020, In: Global Biogeochemical Cycles. 34, 2, e2019GB006349.

Research output: Contribution to journalArticlepeer-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 journalArticlepeer-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 journalArticlepeer-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 journalArticlepeer-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 journalArticlepeer-review