Scientists from the National Center for Atmospheric Research and other colleagues will aim new detectors at the sun's corona during the February 26 solar eclipse, searching for structures they've never observed before. The total eclipse over the Caribbean promises to be one of the most heavily studied in recent history.
In one of the first studies to trace lightning's chemical impact across thousands of miles, a team at the National Center for Atmospheric Research has connected elevated ozone levels in the eastern Indian Ocean with lightning produced in Africa. The results will be presented December 6 at the American Geophysical Union's fall conference.
Beginning early January, a new FAA/NCAR system being demonstrated at LaGuardia and O'Hare airports will provide snowfall "nowcasts" up to 30 minutes in advance for participating airlines to help reduce takeoff delays, increase safety, and save money on deicing procedures. United, USAir, and Delta are testing the new system.
Powerful winter storms that strike the U.S. West Coast often occur in series, like the ones that recently raked Washington, Oregon, and California. These storms have their counterparts in the North Atlantic, and scientists are hot on their trail. A major field program involving NCAR, UCAR and researchers from 11 countries is straddling the Atlantic from Newfoundland to Ireland to study fierce oceanic winter storms.
An article in Nature (13 March) by two NCAR scientists provides new findings on a controversy involving the reliability of global temperature trends available via satellite, which conflict with surface readings. In the same issue is an overview of how computer models of global climate are used and misused.
The FAA and NCAR explore a new detection and warning system for Juneau, Alaska, and tackle remote sensing and forecasting problems. Meanwhile the U.S. Navy seeks NCAR's help with choppy winds on high- speed vessels
Since December, the nation has been inundated by a series of floods unusual in their scope and severity, with more on the way. Here is a list of experts, related Web sites, and background information on U.S. flood risk from a new report by NCAR political scientist Roger Pielke, Jr.
The University Corporation for Atmospheric Research (UCAR) has contracted to purchase an HP Exemplar X-Class system from Hewlett-Packard. The National Center for Atmospheric Research and HP expect to develop the use of distributed shared- memory systems, such as the Exemplar, for numerical computer models employed in climate and weather prediction.
The Climate System Model created by scientists at the National Center for Atmospheric Research (NCAR) in Boulder, Colorado, has been selected as one of six finalists in the Environment, Energy, and Agriculture category for the 1997 Computerworld Smithsonian Awards. The CSM also becomes part of the Smithsonian's Permanent Research Collection.
Low-flying planes and an array of new surface gauges in the Walnut River watershed east of Wichita, Kansas, are gathering data from the lowest few thousand feet of the atmosphere to improve weather forecasting. Scientists from the National Center for Atmospheric Research and the University of Colorado coordinate the experiment.
A new study indicates that recent U.S. hurricane damages do not reflect any unusual increase in hurricane strength or frequency, but rather a continued flocking of Americans to vulnerable coastal locations. The shift could spell trouble if more hurricanes make landfall in coming years, as they did before 1970.
El Nino is a warming of surface waters of the tropical Pacific Ocean with far- reaching climatic consequences. This Tip Sheet describes an upcoming scientific meeting on El Nino, the relation between El Nino and global warming, and a new El Nino book, and lists El Nino experts and Web sites.
National Center for Atmospheric Research scientists are turning commercial aircraft into in-flight "sensing platforms" to measure and report turbulence. United Airlines will deploy the software on more than 200 aircraft over the next six months. The data will go into turbulence forecasts to help pilots steer clear of bumpy air.
Although El Nino events or volcanic eruptions can boost or depress global temperatures within months, their strongest impacts on the earth's biosphere may not occur until years later, according to a study published in the October 31 issue of Science and conducted at the National Center for Atmospheric Research.
The sun's 11-year solar cycle may be the driving force behind periodic changes in temperatures and pressure heights of earth's lower stratosphere from pole to pole, according to new research by Harry van Loon of the National Center for Atmospheric Research and Karin Labitzke of the Free University of Berlin.
Scientist Peter Fox and colleagues at the National Center for Atmospheric Research are using observations, theoretical physics, and computer modeling to get the best representation so far of the total radiative output of the sun. The research will lead to a better understanding of the sun's influence on earth's climate.
First Test Flights Are a Hit: A clear-air turbulence sensor tested by NASA aboard an Electra aircraft owned by the National Science Foundation and operated by the National Center for Atmospheric Research successfully detected turbulence in Colorado skies.
Researchers from the National Center for Atmospheric Research (NCAR) are charting the high winds at Juneau Airport in Alaska this spring in a project funded by the Federal Aviation Administration (FAA). Their goal is to develop a turbulence detection and warning system customized to the airport's challenging terrain.
Over the past year, forecasters in Alabama and Florida--where tornadoes have killed more than 75 people--honed their storm-prediction skills with two training modules released by the University Corporation for Atmospheric Research on CD-ROM. The modules help users to peg storm types in advance based on a blend of weather ingredients.
The 1997 storm season has gotten off to an early start, with deadly tornadoes already striking Florida, Minnesota, and the South. Here are some tips to help you cover severe local storms this spring, including a roundup of storm types described in forecast training tools from the University Corporation for Atmospheric Research.
Four African meteorologists spent the past nine months at UCAR building a multimedia CD-ROM demonstrating best use of satellite data for improving weather forecasts in the tropics. Better forecasts, including seasonal rainfall predictions, are critical to Africa, where millions depend on the current year's crops.
The National Center for Atmospheric Research will host the world's first summit devoted to the causes and consequences of El Nino's less-studied counterpart, La Nina. Sponsored by NCAR and the United Nations University, the July 15-17 summit in Boulder will include a number of the nation's top researchers on La Nina and El Nino.
Beginning September 1, scientists from the National Center for Atmospheric Research (NCAR) in Boulder will fly a highly instrumented C-130 research aircraft around dangerous wildfires that may ignite this season within the U.S. Their goal is to understand wildfire behavior well enough to predict the course of a particular fire.
The space shuttle Discovery, scheduled for takeoff Thursday, October 29, is carrying a white light coronograph, an instrument for studying the sun's corona, developed at the High Altitude Observatory of the National Center for Atmospheric Research.
A weather research group at the National Center for Atmospheric Research has just upped its computing power ten times at no direct cost to NCAR through an innovative loan arrangement with Compaq Computer Corporation and iMSC Corporation, a computer consulting firm. The equipment, worth $8.7 million, arrived at NCAR on October 28.
Research aircraft from the National Center for Atmospheric Research and the U.S. Air Force will bring new scientific instruments and high-definition TV cameras to the west Pacific in a once-in-a-lifetime opportunity to observe the Leonids meteor shower in stereo at its rare peak on November 17.
A new analysis of 115 years of global temperature data, compared to output from two computer models, strengthens the argument that human- caused greenhouse-gas emissions are warming the earth's atmosphere. The new results by Tom Wigley (National Center for Atmospheric Research) and colleagues appear in the November 27 issue of Science.
Thanks to a scientist from the National Center for Atmospheric Research (NCAR), students from around the world can join in the excitement of a six-week field study at the South Pole's new Clean Air Facility.
In a major agenda-setting conference that will guide much of the world's climate research for the next decade, representatives from over 60 countries will gather in Paris December 2-4 to examine questions relating to natural climate variability, the human role in global climate change, and the predictability of global and regional climate.
From 50% to 60% of sulfate-aerosol pollution over the Pacific Northwest is coming from industrialized Asia, according to a model developed by a team of researchers at the National Center for Atmospheric Research. In contrast, sulfates in Europe are coming primarily from European sources.
The earth's mean surface temperature is expected to rise nearly .2 Kelvin (one-third degree Fahrenheit) per decade over the next four decades, according to a new modeling study using the climate system model developed at the National Center for Atmospheric Research.
El Nino may have been less of a factor in Northern Hemisphere climate around 4000 B.C. than it is now, and global warming may be working to accentuate El Nino's current and future impacts. National Center for Atmospheric Research scientists are uncovering implications for world climate.
Through early February, a team of scientists is sending probes into the jet stream over the Pacific Ocean to learn more about clear air turbulence. Research aircraft are dropping instruments over portions of the ocean to improve forecasts of weather systems and provide insight into the sudden, invisible gusts that pose a hazard to aircraft.
A new Web site from the National Center for Atmospheric Research provides data on the cost of damages from hurricanes, floods, and tornadoes in the United States and its territories. The Extreme Weather Sourcebook reports decades of information in constant 1997 dollars, simplifying comparisons among impacts and among states.
The National Center for Atmospheric Research has sent researchers, instruments, and a C-130 research aircraft to the $25-million Indian Ocean Experiment to study aerosols and climate change.
Two research aircraft and 100 researchers are heading to the South Pacific to study what some have called the world's cleanest air. Researchers will gather data on the chemical species that affect formation of tropospheric ozone and sulfate aerosols. The goal is to determine how well the earth's atmosphere cleanses itself.
Tropical coral reefs could be harmed by atmospheric carbon dioxide (CO2) entering the oceans; some reefs may already be declining.
Three planets have been found orbiting the star Upsilon Andromedae in the first discovery of multiple planets outside our solar system. NCAR scientist Timothy Brown was part of the team of eight scientists who observed the additional planets.
Carbon dioxide emissions over the next century could increase wintertime precipitation in the U.S. Southwest and Great Plains by 40% as global average temperature rises 3 degrees Fahrenheit, according to a new climate model developed at the National Center for Atmospheric Research.
The National Center for Atmospheric Research's Mt. Washington Winter Icing and Storms Project is testing methods for remote sensing and improved prediction of in-flight icing conditions that can down small aircraft.
The National Center for Atmospheric Research and the United Nations Environment Programme have together received a $650,000 UN grant to help 12 countries build operational, research and educational programs to protect their people and environment from El Nino and La Nina impacts.
Starting June 2, the National Center for Atmospheric Research is helping guide three research aircraft into Colorado thunderstorms to test how well an airborne Doppler weather radar can detect convective turbulence. The aircraft will zero in on storms from Ft. Collins to Cheyenne, Wyoming, June 2-18.
Until now scientists have found it hard to predict which summer days would produce giant, flood-prone storm systems in the nation's midsection. Now they may have found two keys: the strength of intense downdrafts from mountain storms upstream, and the formation of small- scale low-pressure areas that can help trigger flooding rains for days.
Scientists from the National Center for Atmospheric Research will fly over a prescribed blaze in the Alaskan forest seeking clues to how violent and seemingly unpredictable forest fires spread.
This year may bring a bumper crop of Atlantic hurricanes, thanks to the influence of La Nina and other factors. This release includes Web sites, answers to frequent questions, and hurricane experts from the National Center for Atmospheric Research and other institutions.
Researchers at the National Center for Atmospheric Research have found bright rings around eight sunspots. The rings' existence sheds light on why sunspots are dark and could spell trouble for conventional models of turbulent diffusion. Scientists have searched for the rings since they were predicted 25 years ago.
The National Center for Atmospheric Research highlights breakthroughs in understanding the cooling effect of agriculture, the link between El Ninos and volcanoes, and the length and strength of solar cycles.
A new space-based instrument called MOPITT, launched December 19th from Vandenberg Air Force Base, is capable of long-term global observations of carbon monoxide and methane in the lower atmosphere.
National Center for Atmospheric Research scientists are participating in the largest international project to study Arctic stratosphere ozone.
Middle schoolers in Boulder will go head-to-head with a Denver TV meteorologist in an on-line forecasting contest, which is part of a kids' Web site.
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