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Friday 5 December 2008

Building resolving large-eddy simulations and comparison with wind tunnel experiments

thumbnail image We perform large-eddy simulations (LES) of the flow past a scale model of a complex building. Calculations are accomplished using two different methods to represent the edifice.

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The Stratosphere-Troposphere Analyses of Regional Transport (START-08) campaign

thumbnail image The Stratosphere-Troposphere Analyses of Regional Transport (START-08) campaign to study the transport characteristics of the extratropical upper tropospheric and lower stratospheric (ExUTLS) was conducted April through June, 2008. The study incorporated data taken from instrumentation aboard the NSF-NCAR Gulfstream V, satellite imaging, and from various model simulations.  START08 set the stage for more complex and comprehensive field studies of  UTLS  chemistry and microphysics currently in the planning stages.

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TIGGE featured in EOS

image thumbnail The TIGGE project, short for The Observing System Research and Predictability Experiment (THORPEX) Interactive Grand Global Ensemble, is an international and collaborative effort to improve weather prediction and models. The project is currently featured in EOS, the weekly publication of the American Geophysical Union.

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Stellar Insights: Using the TeraGrid to Understand the Stars

image thumbnail Our understanding of the Sun, and other stars like it, has been continually growing. But the last 20 years have been revolutionary. Improved technologies and observational capacity have led to entire new fields of study like helioseismology and asteroseismology that look at the global oscillations of the Sun and other stars to deduce their internal structure.

Travis Metcalfe, a scientist at NCAR's High Altitude Observatory and CISL, is using the TeraGrid to analyze new data about solar and stellar oscillations from satellites. He is also validating the results by comparing them with ground-based observations.

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Previous Features | Previous NCAR Field Guides

  • WEATHER
  • CLIMATE
  • CHEMISTRY
  • SOLAR
  • EARTH SYSTEM

The Weather Research & Forecasting Model (WRF)

The Community Climate System Model (CCSM)

The Whole Atmosphere Community Climate Model (WACCM)

Sun & Space Weather Modeling

Toward an Earth System Model

NCAR News

  • Press Release: Health and Weather: UCAR Weather Forecasts Aim to Reduce African Meningitis Epidemics [read more]

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250 million years ago, rising greenhouse-gas levels set off catastrophic changes.

The Christian Science Monitor (20 November 2008)

thumbnailAt the Permian boundary, “you’re in a state of gradual warming, then as you approach that boundary, the warming in­­creases dramatically,” says Jeff Kiehl, a senior scientist at the Na­­­tion­­­al Center for Atmospheric Re­­search in Boulder, Colo. “It wasn’t a linear warming.” Says Professor Kump: “This shows us what could happen if we push the system too hard…. We don’t know where the intermediate thresholds are.” [read more]

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Education & Outreach

You can explore the atmosphere, too. From the learning games on Kid's Crossing, to Windows to the Universe, there are many ways to learn about our atmosphere, and the scientists who study it.

There are opportunities for undergraduates with internship programs such as SOARS; and Post graduate students should explore the opportunities to work with NCAR, via the Advanced Study Program.

NCAR is committed to developing and enhancing public interest in and understanding of science. Educators can take an online course, view teaching resources by grade-level in the Educator's Bridge, or get up-to-speed on Weather & Climate Basics.

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