World's Best Scientists 2026 revealed!

D-Index & Metrics

Earth Science

D-Index
52
Citations
16462
World Ranking
2966
National Ranking
1211

Overview

Raymond G. Najjar is affiliated with Pennsylvania State University in the United States. Their research primarily spans the fields of Earth and Planetary Sciences and Environmental Science, with significant focus on subfields such as Oceanography, Global and Planetary Change, Environmental Chemistry, Ecology, and Pollution.

Najjar's work explores a range of topics related to marine and coastal ecosystems, oceanographic and atmospheric processes, and environmental gas dynamics. Specific research interests include ocean acidification effects and responses, methane hydrates, coastal wetland ecosystem dynamics, and marine biology and ecology research.

Frequently, Najjar collaborates with other researchers including Marjorie A. M. Friedrichs, Pierre St-Laurent, Maria Herrmann, Elizabeth H. Shadwick, and Hanqin Tian.

The scientist has published extensively in several notable academic venues. These include:

  • Global Biogeochemical Cycles
  • Estuaries and Coasts
  • Goldschmidt Abstracts
  • Zenodo (CERN European Organization for Nuclear Research)
  • Biogeosciences

Some recent papers authored or co-authored by Najjar are:

  • The land-to-ocean loops of the global carbon cycle, 2022, Nature
  • Coastal vegetation and estuaries are collectively a greenhouse gas sink, 2023, Nature Climate Change
  • A Synthesis of Global Coastal Ocean Greenhouse Gas Fluxes, 2024, Global Biogeochemical Cycles
  • Extent and Causes of Chesapeake Bay Warming, 2021, JAWRA Journal of the American Water Resources Association
  • Tidal Wetland Gross Primary Production Across the Continental United States, 2000-2019, 2020, Global Biogeochemical Cycles

Best Publications

  • Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms

    James C. Orr;Victoria J. Fabry;Olivier Aumont;Laurent Bopp

  • The land-to-ocean loops of the global carbon cycle

    Unknown

  • Potential climate-change impacts on the Chesapeake Bay

    Raymond G. Najjar;Christopher R. Pyke;Mary Beth Adams;Denise Breitburg

  • Downward transport and fate of organic matter in the ocean: Simulations with a general circulation model.

    Raymond G. Najjar;Jorge Louis Sarmiento;J. R. Toggweiler

  • Evaluating Global Ocean Carbon Models: The Importance of Realistic Physics

    Scott C. Doney;Keith Lindsay;K. Caldeira;J.-M. Campin;J.-M. Campin

  • A new coupled, one-dimensional biological-physical model for the upper ocean: Applications to the JGOFS Bermuda Atlantic Time-series Study (BATS) site

    Scott C. Doney;David M. Glover;Raymond G. Najjar

  • The potential impacts of climate change on the mid-Atlantic coastal region

    Raymond G. Najjar;Henry A. Walker;Patti J. Anderson;Eric J. Barron

  • Impact of circulation on export production, dissolved organic matter, and dissolved oxygen in the ocean: Results from Phase II of the Ocean Carbon-cycle Model Intercomparison Project (OCMIP-2)

    Raymond G. Najjar;X. Jin;F. Louanchi;Olivier Aumont

  • Increasing N abundance in the northwestern Pacific Ocean due to atmospheric nitrogen deposition.

    Tae Wook Kim;Kitack Lee;Raymond G. Najjar;Hee Dong Jeong

  • Evaluation of ocean carbon cycle models with data-based metrics

    K. Matsumoto;Jorge L. Sarmiento;Robert M. Key;Olivier Aumont

  • Distribution of nitrate, phosphate and silicate in the world oceans

    Sydney Levitus;Margarita E. Conkright;Joseph L. Reid;Raymond Gabriel Najjar

  • Evaluation of ocean model ventilation with CFC-11: comparison of 13 global ocean models

    Jean-Claude Dutay;John L. Bullister;Scott C. Doney;James C. Orr

  • Ocean stagnation and end-Permian anoxia

    Roberta M. Hotinski;Karen L. Bice;Lee R. Kump;Raymond G. Najjar

  • Relating estimates of CaCO3 production, export, and dissolution in the water column to measurements of CaCO3 rain into sediment traps and dissolution on the sea floor: A revised global carbonate budget

    W. M. Berelson;W. M. Balch;R. Najjar;R. A. Feely

  • Biogeochemical protocols and diagnostics for the CMIP6 Ocean Model Intercomparison Project (OMIP)

    James C. Orr;Raymond G. Najjar;Olivier Aumont;Laurent Bopp

  • Carbon budget of tidal wetlands, estuaries, and shelf waters of Eastern North America

    R. G. Najjar;M. Herrmann;R. Alexander;E. W. Boyer

  • Denitrification effects on air-sea CO2 flux in the coastal ocean: Simulations for the northwest North Atlantic

    Katja Fennel;John Wilkin;Michael Previdi;Raymond Najjar

  • Coastal vegetation and estuaries are collectively a greenhouse gas sink

    Unknown

  • Seasonal variations in the atmospheric O2/N2 ratio in relation to the kinetics of air‐sea gas exchange

    Ralph F. Keeling;Britton B. Stephens;Raymond G. Najjar;Scott C. Doney

  • Remote sensing retrievals of colored dissolved organic matter and dissolved organic carbon dynamics in North American estuaries and their margins

    Fang Cao;Maria Tzortziou;Chuanmin Hu;Antonio Mannino

  • Impact of climate variation and change on Mid-Atlantic Region hydrology and water resources

    Rob Neff;Heejun Chang;C. Gregory Knight;Raymond G. Najjar

  • Net ecosystem production and organic carbon balance of U.S. East Coast estuaries: A synthesis approach

    Maria Herrmann;Raymond G. Najjar;W. Michael Kemp;Richard B. Alexander

  • Ocean carbon-cycle dynamics and atmospheric Pco2

    J. L. Sarmiento;J. R. Toggweiler;R. Najjar

Frequent Co-Authors

Marjorie A. M. Friedrichs
Marjorie A. M. Friedrichs Virginia Institute of Marine Science
Hanqin Tian
Hanqin Tian Auburn University
Scott C. Doney
Scott C. Doney University of Virginia
James C. Orr
James C. Orr French Alternative Energies and Atomic Energy Commission (CEA)
Keith Lindsay
Keith Lindsay National Center for Atmospheric Research
Fortunat Joos
Fortunat Joos University of Bern
Anne Mouchet
Anne Mouchet University of Liège
Andrew Yool
Andrew Yool National Oceanography Centre
Eileen E. Hofmann
Eileen E. Hofmann Old Dominion University
Reiner Schlitzer
Reiner Schlitzer Alfred Wegener Institute for Polar and Marine Research

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