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Satellite image of Alaska   Ozone Hole Recovery Will Shape Climate Change
A full recovery of the stratospheric ozone hole could modify climate change in the Southern Hemisphere and even amplify Antarctic warming, according to scientists from the University of Colorado at Boulder, the National Oceanic and Atmospheric Administration and NASA.
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Satellite image of Alaska   NASA Launches Airborne Study of Arctic Atmosphere, Air Pollution
The Arctic Research of the Composition of the Troposphere from Aircraft and Satellites, or ARCTAS, is the most extensive field campaign ever to investigate the chemistry of the Arctic's lower atmosphere.
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EastCoast Pollution Thumbnail   NASA Research Opportunities in Space and Earth Sciences (ROSES) – 2008
NASA's Science Mission Directorate is soliciting proposals for supporting basic and applied research and technology across a broad range of program elements. Funding through ROSES qualifies researchers for high-end computing access at NASA.
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Nobel medal   NASA Climate Change 'Peacemakers' Aided Nobel Effort
It's not every day that a NASA scientist can wake up and think, "Hey, I did something for world peace." But on Monday, Dec. 10, many NASA Earth scientists did exactly that.
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EastCoast Pollution Thumbnail   Local Sources Major Cause of U.S. Near-Ground Aerosol Pollution
A new NASA study estimates that most ground-level particulate pollution in the United States stems from the regional sources in North America and only a small amount is brought to the country from other parts of the world.
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MERRA Thumbnail   MERRA: Modern Era Retrospective-Analysis for Research and Applications
MERRA is a NASA reanalysis for the satellite era using a new version of the Goddard Earth
Observing System Data Assimilation System Version 5 (GEOS-5).
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CAPPI Reflectivity Thumb   Convective Transport of Trace Gases
Modeled transport of CO and CO2 is used to evaluate parameterizations in GEOS-5 and to identify which parameters have the greatest impact on trace gas transport in three different storms.
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Climate Thumbnail   20th Century Climate Variations in Observations and Reanalyses
To study global warming trends and the pan-decadal variability (PDV) in the Pacific, the dominating ENSO signal is removed first. After this, GMAO investigations of observations and reanalysis datasets show that the warming in the Pacific basin is weaker than surrounding basins and that one of several PDV regime shifts occurred during the 1990s.
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Gelaro GSI Thumbnail   Observation Sensitivity Calculations Using the Adjoint of the Gridpoint Statistical Interpolation (GSI) Analysis System
NASA scientists have developed a new formulation of the GEOS-5 atmospheric data assimilation system to understand and improve the way observations are used in weather and climate forecasts.
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An illustration of what plants might look like on other planets   NASA TC4 (Tropical Composition, Cloud and Climate Coupling) Mission Investigates the Structure, Properties and Processes in the Tropical Eastern Pacific
TC4 successfully concluded August 12, 2007.
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Errico thumbnail   Dominant modes of instabilities in the stratosphere
GMAO scientists use GEOS-5 to examine the leading modes of weather instability in the stratosphere to help provide insight into observed stratospheric dynamical phenomena.
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The 1991 eruption of Mount Pinatubo in the Philippines produced sulfate aerosols that affected climate for years and offered climate modelers an unprecedented opportunity to compare models with observations. (Photograph by Dave Harlow, courtesy of the US Geological Survey)   The Physics of Climate Modeling
Climate is a large-scale phenomenon that emerges from complicated interactions among small-scale physical systems. Yet despite this complexity, climate models have demonstrated impressive successes.
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visualization shows total precipitable water over the United States on July 10, 2004. The data come from an experimental reanalysis of Summer 2004 running the GEOS-5 Data Assimilation System at the 1/2-degree resolution that will be used for MERRA   GEOS-5 Version 1.0 Available
The Goddard Earth Observing System Model, Version 5 (GEOS-5) is a system of models integrated using the Earth System Modeling Framework (ESMF).
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Last Updated: 04/25/2008