GFDL - Geophysical Fluid Dynamics Laboratory

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Approaching storm iStockphoto.com/MvH

Welcome

The Geophysical Fluid Dynamics Laboratory (GFDL) is engaged in comprehensive long lead-time research fundamental to NOAA's mission. Scientists at GFDL develop and use mathematical models and computer simulations to improve our understanding and prediction of the behavior of the atmosphere, the oceans, and climate. GFDL scientists focus on model-building relevant for society, such as hurricane research, prediction, and seasonal forecasting, and understanding global and regional climate change.

Since 1955, GFDL has set the agenda for much of the world's research on the modeling of global climate change and has played a significant role in the World Meteorological Organization, the Intergovernmental Panel on Climate Change assessments, and the U.S. Global Change Research Program. GFDL's mission is to be a world leader in the development of earth system models, and the production of timely and reliable knowledge and assessments on natural climate variability and anthropogenic changes.

GFDL research encompasses the predictability and sensitivity of global and regional climate; the structure, variability, dynamics and interaction of the atmosphere and the ocean; and the ways that the atmosphere and oceans influence, and are influenced by various trace constituents. The scientific work of the Laboratory incorporates a variety of disciplines including meteorology, oceanography, hydrology, classical physics, fluid dynamics, chemistry, applied mathematics, and numerical analysis.

Research is also facilitated by the Atmospheric and Oceanic Sciences Program (AOS), which is a collaborative program at GFDL with Princeton University. Under this program, Princeton faculty, research scientists, and graduate students participate in theoretical studies, both analytical and numerical, and in observational experiments in the laboratory and in the field. The program is supported in part by NOAA funding. AOS scientists may also be involved in GFDL research through institutional or international agreements.

For an overview of GFDL's work, see our Fact Sheet.

Research Highlights

  • February 14, 2012 Will open ocean oxygen stress intensify under climate change? - Ten percent of today’s ocean volume is characterized by low level of dissolved oxygen similar to those found in the well-known "dead zones" in the Gulf of Mexico with 35% of global surface waters overlying at least some of this "hypoxia". Under global warming, higher temperatures would be expected to directly lower oxygen concentrations and enhanced stratification to reduce the flow of well-ventilated surface waters to the interior. Under such circumstances, it has been hypothesized that the open-ocean dead zones could greatly expand and indeed changes in low-oxygen waters have been invoked as evidence of climate change. Read more
  • February 8, 2012 Using Relative Humidity as a State Variable in Climate Feedback Analysis - We often use feedback terminology to help us understand why models differ in their estimates of the magnitude of the surface temperature changes produced by a given change in the Earth's energy balance -- such as that due to an increase in carbon dioxide. But a variety of lines of evidence have suggested that the methodology used to define these feedbacks is far from optimal, making the typical model's behavior look more complicated than it really is. Our goal in this short note was to propose an alternative methodology that simplifies the analysis in several ways. Read more
  • February 3, 2012 The Future of Hurricane Activity: Why Models Differ Among Themselves - One aspect of uncertainty in future projections of basin-wide hurricane activities stems from the variety of projections of the spatial pattern of tropical warming. A tropical cyclone permitting high-resolution, global atmospheric model is used to explore hurricane frequency response to sea surface temperature (SST) anomalies generated by coupled models for the late 21st century using the SRES A1B scenario. Read more
  • January 24, 2012 Pathways Between Primary Production and Fisheries Yields of Large Marine Ecosystems - There is considerable uncertainty in projections of the impact of climate on fisheries yields due to uncertainties in climate change impacts on primary production and the processes controlling how much primary production is transferred to fish. Primary production and proxies such as chlorophyll have proven to be useful predictors of fisheries yields at regional scales but show much less skill when applied globally. The marine food web dynamics that control the transfer of energy from phytoplankton to fish are complex and it has been postulated that the relationship between primary production and fisheries production may differ dramatically between ecosystems due to changes in planktonic foodweb structure. Read more

Read more GFDL Research Highlights


Events & Seminars

  • February 23, 2012: The CGILS Project to Understand the Physical Mechanism of Climate Feedbacks from Low Clouds (abstract)
    Minghua Zhang (Stony Brook University/SUNY)
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • February 29, 2012: Oxygen minimum zones in the eastern boundary currents of the Southern Atlantic - a model view (abstract)
    Martin Schmidt (Baltic Sea Research Institute, Germany)
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • March 1, 2012: TBA
    David Romps (TBA)
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • March 7, 2012: The seasonality of Arctic air pollution: A "dynamicist"'s view (abstract)
    Yi Ming (GFDL)
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • March 8, 2012: Tropical convection, waves, and climate (abstract)
    Zhiming Kuang (Harvard)
    Time: 2:00 pm - 3:15 pm
    Location: Smagorinsky Seminar Room
  • March 13, 2012: TBD (abstract)
    Mat Evans (University of York/National Centre for Atmospheric Science)
    Time: 10:00 am - 12:00 pm
    Location: 217 Conference Room
  • March 14, 2012: Interactions of Water and Energy Mediate Permafrost Climate Feedbacks (abstract)
    Zack Subin (U of C, Berkeley)
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • March 15, 2012: Sea ice in global climate models (abstract)
    Elizabeth Hunke (Los Alamos National Lab)
    Time: 2:00 pm - 3:15 pm
    Location: Smagorinsky Seminar Room

More events & seminars...