UCAR statement on nomination of Barry Myers to head NOAA

BOULDER, Colo. — The University Corporation for Atmospheric Research (UCAR) congratulates Barry Myers on his nomination as administrator of the National Oceanic and Atmospheric Administration (NOAA).Myers is CEO of AccuWeather and a leader of the American weather industry. He lent important support for the Weather Research and Forecasting Innovation Act of 2017, which emphasizes subseasonal to seasonal weather prediction — a priority for business and community leaders who need more reliable forecasts of weather patterns weeks to months in advance.His nomination, announced today by the White House, comes at a critical time as the United States works to strengthen its resilience to severe weather events and regain global leadership in the field of weather prediction."From my years of working with Barry, I know he appreciates the importance of re-establishing U.S. preeminence in weather prediction," said UCAR President Antonio Busalacchi. "I look forward to hearing Barry’s plans to improve weather forecasting through partnerships among government agencies, private companies, and the university community. As we have seen from the recent hurricanes, timely and accurate forecasts are critical for evacuating residents and protecting lives and property, as well as strengthening our economy and safeguarding national security.”In addition to running the National Weather Service, NOAA engages in weather and climate research and operates weather satellites and a national environmental data center. The agency also works to better understand and protect the nation's coasts, oceans, and fisheries.  

UCAR statement on nomination of Walter Copan to head NIST

BOULDER, Colo. — The University Corporation for Atmospheric Research (UCAR) congratulates Walter Copan on his nomination as undersecretary of commerce for standards and technology and director of the National Institute of Standards and Technology (NIST).Copan, an expert in technology transfer and intellectual property, is president and CEO of Colorado-based Intellectual Property Engineering Group. He previously served at the National Renewable Energy Laboratory and at Brookhaven National Laboratory, leading technology commercialization and R&D partnerships."Walt is a widely respected scientist, innovator, and administrator with extensive experience in moving research to the market where it can benefit society," said UCAR President Antonio Busalacchi. "His knowledge of weather, climate, and space weather will foster new areas of cooperation between NIST and the Earth system science community."NIST is a measurement standards laboratory that promotes innovation and industrial competitiveness. The NIST Cybersecurity Framework provides guidance to organizations on reducing cybersecurity risks.UCAR is a nonprofit consortium of more than 100 colleges and universities focused on research and training in the atmospheric and related sciences.

UCAR statement on nomination of Rep. Jim Bridenstine to lead NASA

BOULDER, Colo. — The University Corporation for Atmospheric Research (UCAR) congratulates U.S. Rep. Jim Bridenstine on his nomination to serve as administrator of NASA.Bridenstine, a pilot in the U.S. Navy Reserve and former executive director of the Tulsa Air and Space Museum and Planetarium, won election to Congress in 2012 to represent Oklahoma’s 1st Congressional District. As a member of the House Science, Space, and Technology Committee, he has played a leading role in supporting weather research, including passage of the Weather Research and Forecasting Innovation Act of 2017."In the two times I testified before his congressional committees, it became quite apparent to me that Rep. Bridenstine is a true champion for the weather community,” said UCAR President Antonio Busalacchi. “We appreciate his deep understanding of the importance of improved weather prediction for the U.S. economy and national security, as well as for protecting lives and property. As someone who worked for NASA for 18 years, I look forward to Rep. Bridenstine's confirmation hearings and learning about his plans for the agency, including his support of Earth observations and research that are so essential for understanding our planet's weather and climate."In addition to running the nation's civilian space program, NASA operates a fleet of satellites and observation campaigns to learn more about our planet through the Earth Observing System. Its research also focuses on advancing understanding of the Sun, solar system, and the universe.UCAR is a nonprofit consortium of more than 100 colleges and universities focused on research and training in the atmospheric and related Earth system sciences.

UCAR statement on nomination of Timothy Gallaudet

BOULDER, Colo. — The University Corporation for Atmospheric Research (UCAR) congratulates Rear Admiral Timothy Gallaudet, a former oceanographer of the Navy, on his nomination to assistant secretary of commerce for oceans and atmosphere. In that position, Gallaudet will serve as the second-in-command at the National Oceanic and Atmospheric Administration (NOAA). Gallaudet, who also served as commander of the Navy’s Meteorology and Oceanography Command, is a 32-year Navy veteran. He holds master's and doctoral degrees in oceanography from the Scripps Institution of Oceanography."Tim's mixture of operational expertise and scientific knowledge make him an ideal choice for this position," said UCAR President Antonio Busalacchi. "His understanding of the vital collaborations between NOAA, private forecasting companies, and the academic community can help foster the movement of research to operational forecasting and advance the nation's weather prediction capabilities. Furthermore, his knowledge of Earth system science and his ability to align that science with budget and programs will be essential to moving NOAA forward in the next few years."NOAA runs the National Weather Services, engages in weather and climate research, and operates weather satellites and a climate data center. The agency also works to better understand and protect the nation's coasts, oceans, and fisheries.UCAR is a nonprofit consortium of more than 100 colleges and universities focused on research and training in the atmospheric and related sciences.

NCAR|UCAR hurricane experts available to explain storm behavior, potential impacts

BOULDER, Colo. — As Hurricane Harvey takes aim at Texas, scientists at the National Center for Atmospheric Research (NCAR) and its managing organization, the University Corporation for Atmospheric Research (UCAR), are closely watching the storm and testing high-resolution computer models.Hurricane experts are available to explain issues such as:How we can better predict the possible impacts of hurricanes, including wind damage, flooding, and subsequent spread of disease-bearing mosquitoes;How people respond to hurricane forecast and warning messages and how risk communication can be improvedWhether climate change is affecting hurricanes and what we can expect in the future;The importance of improving weather models to safeguard life and property.Antonio Busalacchi, UCAR president (please contact David Hosansky for interview requests)An expert on ocean-atmosphere interactions, Busalacchi has testified before Congress on the importance of improving the nation's weather forecasting capabilities to better protect life and property, bolster the economy, and strengthen national security. He has firsthand experience with storms along the Gulf Coast as a part-time New Orleans resident, and he is a member of the Gulf Research Program Advisory Board of the National Academy of Sciences.Christopher Davis, director, NCAR Mesoscale and Microscale Meteorology Laboratory,, 303-497-8990Davis studies the weather systems that lead to hurricanes and other heavy rainfall events. His expertise includes hurricane prediction and how computer models can be improved to better forecast storms. His NCAR weather lab is running experimental computer simulations of Hurricane Harvey.James Done, NCAR scientist,, 303-497-8209Done led development of the innovative Cyclone Damage Potential (CDP) index, which quantifies a hurricane's ability to cause destruction, using a scale of 1 to 10. It can also be used to examine the damage potential for cyclones in the future as the climate warms.David Gochis, NCAR scientist,, 303-497-2809An expert in hydrometeorology, Gochis studies the causes of floods and how to better predict them. He helped develop pioneering software that is at the core of the National Water Model. The National Oceanic and Atmospheric Administration Office of Water Prediction uses this model to provide a continuous picture of all the waterways in the contiguous United States and alert officials to potentially dangerous floods.Matthew Kelsch, UCAR hydrometeorologist,, 303-497-8309Kelsch has studied some of the biggest U.S. flood events connected to hurricanes and tropical storms. He trains scientists and forecasters from around the world on emerging hydrology and weather topics.Rebecca Morse, NCAR scientist,, 303-497-8172Morss studies the predictability of hurricane-related hazards, including storm surge and inland flooding, and hurricane and flood risk communication and evauation decision making.Kevin Trenberth, NCAR senior scientist,, 303-497-1318Trenberth is an expert on the global climate system. He has been in the forefront of scientists examining the potential influence of climate change on the intensity of tropical storms and hurricanes and the increased widespread flooding that they cause.Jeff Weber, UCAR meteorologist,, 303-497-8676As an expert on hurricanes and severe weather in general, Weber closely monitors the behavior of individual storms and the larger atmospheric and oceanic conditions that influence them.

Dino-killing asteroid could have thrust Earth into two years of darkness

BOULDER, Colo. — Tremendous amounts of soot, lofted into the air from global wildfires following a massive asteroid strike 66 million years ago, would have plunged Earth into darkness for nearly two years, new research finds. This would have shut down photosynthesis, drastically cooled the planet, and contributed to the mass extinction that marked the end of the age of dinosaurs.These new details about how the climate could have dramatically changed following the impact of a 10-kilometer-wide asteroid will be published Aug. 21 in the Proceedings of the National Academy of Sciences. The study, led by the National Center for Atmospheric Research (NCAR) with support from NASA and the University of Colorado Boulder, used a world-class computer model to paint a rich picture of how Earth’s conditions might have looked at the end of the Cretaceous Period, information that paleobiologists may be able to use to better understand why some species died, especially in the oceans, while others survived.Scientists estimate that more than three-quarters of all species on Earth, including all non-avian dinosaurs, disappeared at the boundary of the Cretaceous-Paleogene periods, an event known as the K-Pg extinction. Evidence shows that the extinction occurred at the same time that a large asteroid hit Earth in what is now the Yucatán Peninsula. The collision would have triggered earthquakes, tsunamis, and even volcanic eruptions.Scientists also calculate that the force of the impact would have launched vaporized rock high above Earth's surface, where it would have condensed into small particles known as spherules. As the spherules fell back to Earth, they would have been heated by friction to temperatures high enough to spark global fires and broil Earth's surface. A thin layer of spherules can be found worldwide in the geologic record."The extinction of many of the large animals on land could have been caused by the immediate aftermath of the impact, but animals that lived in the oceans or those that could burrow underground or slip underwater temporarily could have survived," said NCAR scientist Charles Bardeen, who led the study. "Our study picks up the story after the initial effects — after the earthquakes and the tsunamis and the broiling. We wanted to look at the long-term consequences of the amount of soot we think was created and what those consequences might have meant for the animals that were left."Other study co-authors are Rolando Garcia and Andrew Conley, both NCAR scientists, and Owen “Brian” Toon, a researcher at the University of Colorado Boulder.An illustration of an asteroid impacting Earth. (Image courtesy NASA.)A world without photosynthesisIn past studies, researchers have estimated the amount of soot that might have been produced by global wildfires by measuring soot deposits still preserved in the geologic record. For the new study, Bardeen and his colleagues used the NCAR-based Community Earth System Model (CESM) to simulate the effect of the soot on global climate going forward. They used the most recent estimates of the amount of fine soot found in the layer of rock left after the impact (15,000 million tons), as well as larger and smaller amounts, to quantify the climate's sensitivity to more or less extensive fires.In the simulations, soot heated by the Sun was lofted higher and higher into the atmosphere, eventually forming a global barrier that blocked the vast majority of sunlight from reaching Earth's surface. “At first it would have been about as dark as a moonlit night," Toon said.While the skies would have gradually brightened, photosynthesis would have been impossible for more than a year and a half, according to the simulations. Because many of the plants on land would have already been incinerated in the fires, the darkness would likely have had its greatest impact on phytoplankton, which underpin the ocean food chain. The loss of these tiny organisms would have had a ripple effect through the ocean, eventually devastating many species of marine life.The research team also found that photosynthesis would have been temporarily blocked even at much lower levels of soot. For example, in a simulation using only 5,000 million tons of soot — about a third of the best estimate from measurements — photosynthesis would still have been impossible for an entire year.In the simulations, the loss of sunlight caused a steep decline in average temperatures at Earth's surface, with a drop of 50 degrees Fahrenheit (28 degrees Celsius) over land and 20 degrees Fahrenheit (11 degrees Celsius) over the oceans.While Earth's surface cooled in the study scenarios, the atmosphere higher up in the stratosphere actually became much warmer as the soot absorbed light from the Sun. The warmer temperatures caused ozone destruction and allowed for large quantities of water vapor to be stored in the upper atmosphere. The water vapor then chemically reacted in the stratosphere to produce hydrogen compounds that led to further ozone destruction. The resulting ozone loss would have allowed damaging doses of ultraviolet light to reach Earth's surface after the soot cleared.The large reservoir of water in the upper atmosphere formed in the simulations also caused the layer of sunlight-blocking soot to be removed abruptly after lingering for years, a finding that surprised the research team. As the soot began to settle out of the stratosphere, the air began to cool. This cooling, in turn, caused water vapor to condense into ice particles, which washed even more soot out of the atmosphere. As a result of this feedback loop — cooling causing precipitation that caused more cooling — the thinning soot layer disappeared in just a few months.Challenging the modelWhile the scientists think the new study gives a robust picture of how large injections of soot into the atmosphere can affect the climate, they also caution that the study has limitations.For example, the simulations were run in a model of modern-day Earth, not a model representing what Earth looked like during the Cretaceous Period, when the continents were in slightly different locations. The atmosphere 66 million years ago also contained somewhat different concentrations of gases, including higher levels of carbon dioxide.Additionally, the simulations did not try to account for volcanic eruptions or sulfur released from the Earth's crust at the site of the asteroid impact, which would have resulted in an increase in light-reflecting sulfate aerosols in the atmosphere.The study also challenged the limits of the computer model's atmospheric component, known as the Whole Atmosphere Community Climate Model (WACCM)."An asteroid collision is a very large perturbation — not something you would normally see when modeling future climate scenarios," Bardeen said. "So the model was not designed to handle this and, as we went along, we had to adjust the model so it could handle some of the event's impacts, such as warming of the stratosphere by over 200 degrees Celsius."These improvements to WACCM could be useful for other types of studies, including modeling a "nuclear winter" scenario. Like global wildfires millions of years ago, the explosion of nuclear weapons could also inject large amounts of soot into the atmosphere, which could lead to a temporary global cooling."The amount of soot created by nuclear warfare would be much less than we saw during the K-Pg extinction," Bardeen said. "But the soot would still alter the climate in similar ways, cooling the surface and heating the upper atmosphere, with potentially devastating effects."Writer:Laura Snider, Senior Science Writer

Eclipse science along the path of totality

BOULDER, Colo. — Leading U.S. solar scientists today highlighted research activities that will take place across the country during next month's rare solar eclipse, advancing our knowledge of the Sun's complex and mysterious magnetic field and its effect on Earth's atmosphere.Experts at the National Science Foundation (NSF), National Aeronautics and Space Administration (NASA), and National Center for Atmospheric Research (NCAR) provided details at this morning's press conference about the array of technologies and methodologies that will be used to obtain unprecedented views of the Sun on Aug. 21. The experiments, led by specialized researchers, will also draw on observations by amateur skywatchers and students to fill in the picture."This total solar eclipse across the United States is a fundamentally unique opportunity in modern times, enabling the entire country to be engaged with modern technology and social media," said Carrie Black, an associate program director at NSF who oversees solar research. "Images and data from potentially as many as millions of people will be collected and analyzed by scientists for years to come."Total solar eclipse over India in 1980. (©UCAR, High Altitude Observatory. This image is freely available for media & nonprofit use.)"This is a generational event," agreed Madhulika Guhathakurta, NASA lead scientist for the 2017 eclipse. "This is going to be the most documented, the most appreciated eclipse ever."The scientific experiments will take place along the path of totality, a 70-mile wide ribbon stretching from Oregon to South Carolina where the moon will completely cover the visible disk of the Sun. Depending on the location, viewers will get to experience the total eclipse for as long as 2 minutes and 40 seconds. It will take about an hour and a half for the eclipse to travel across the sky from the Pacific Coast to the Atlantic.NASA and other organizations are reminding viewers to take eye safety precautions because it is not safe to look at the Sun during an eclipse.For scientists, the celestial event is a rare opportunity to test new instruments and to observe the elusive outer atmosphere of the Sun, or solar corona, which is usually obscured by the bright surface of the Sun. Many scientific questions focus on the corona, including why it is far hotter than the surface and what role it plays in spewing large streams of charged particles, known as coronal mass ejections, that can buffet Earth's atmosphere and disrupt GPS systems and other sensitive technologies.Black noted that the moon will align exactly with the Sun's surface, which will enable observations of the entire corona, including very low regions that are rarely detectable. Obtaining observations from the ground is particularly important, she explained, because far more data can be transmitted than would be possible from space-based instruments."The moon is about as perfect an occulter as one can get," she said. "And what makes this an even more valuable opportunity is that everyone has access to it."In addition to training ground-based instruments on the Sun, scientists will also deploy aircraft to follow the eclipse, thereby increasing the amount of time they can take observations.An NCAR research team, for example, will use the NSF/NCAR Gulfstream-V research aircraft to take infrared measurements for about four minutes, helping scientists better understand the solar corona's magnetism and thermal structure. Scientists with the Southwest Research Institute in Boulder will use visible and infrared telescopes on NASA's twin WB-57 airplanes in a tag-team approach, enabling them to get a unique look at both the solar corona and Mercury for about eight minutes. The goal is to better understand how energy moves through the corona as well as learning more about the composition and properties of Mercury's surface.Scientists will also study Earth's outer atmosphere during the eclipse. The ionosphere is a remote region of the atmosphere containing particles that are charged by solar radiation. Disturbances in the ionosphere can affect low-frequency radio waves. By blocking energy from the Sun, the eclipse provides scientists with an opportunity to study the ionosphere's response to a sudden drop in solar radiation.For example, a Boston University research team will use off-the-shelf cell phone technology to construct a single-frequency GPS array of sensors to study the ionospheric effects of the eclipse. This project could lay the foundation for using consumer smartphones to help monitor the outer atmosphere for disturbances, or space weather events, caused by solar storms. Another experiment, run by researchers at the University of Virginia and George Mason University, will use transmitters broadcasting at low frequencies to probe the response of regions of the ionosphere, while a Virginia Tech team will use a network of radio receives and transmitters across the country to observe the ionosphere's response during the eclipse.Citizen scientists also are expected to play a major role in taking valuable observations during the eclipse."This is a social phenomenon, and we have a significant opportunity to promote this and do all the science that we can," Guhathakurta said.The Citizen Continental-America Telescopic Eclipse (CATE) Experiment by the National Solar Observatory, for example, will rely on volunteers from universities, high schools, informal education groups, and national labs for an eclipse "relay race." Participants spaced along the path of totality will use identical telescopes and digital camera systems to capture high-quality images that will result in a dataset capturing the entire, 93-minute eclipse across the country. And a project led by the University of California Berkeley will assemble a large number of solar images, obtained by students and amateur observers along the eclipse path to create educational materials as part of the Eclipse Megamovie project."As these projects show, the eclipse will place the Sun firmly in the forefront of the national eye," said Scott McIntosh, director of NCAR's High Altitude Observatory. "This is a unique opportunity to communicate the fact that our star is complex, beautiful, and mysterious. At the same time, it is more critical than ever to study it, as solar activity can pose significant threats to our technologically driven society." 

Michael Farrar joins UCAR leadership

BOULDER, Colo. — The University Corporation for Atmospheric Research (UCAR) has named Michael Farrar as its senior vice president/chief operating officer.In this newly created role, Farrar will be responsible for strengthening the organization's efforts in research, education, innovation, and outreach, ensuring that UCAR delivers the highest quality services to its staff and to the National Center for Atmospheric Research (NCAR). UCAR manages NCAR on behalf of the National Science Foundation."UCAR's primary mission is to be an exemplary steward of the National Science Foundation's investment in NCAR," said UCAR President Antonio J. Busalacchi. "Mike's leadership experience in the National Weather Service, the U.S. Air Force, the private sector, and beyond has equipped him with the skills we need to ensure that UCAR delivers on this mission. Mike is a highly respected leader in the weather community. His familiarity with NCAR and UCAR mean he can hit the ground running. I look forward to the contributions he will make to our organization."Michael Farrar. (Photo courtesy NOAA.)Farrar comes to the organization from the National Oceanic and Atmospheric Administration, where he has worked since 2012. He currently serves as the director of the Environmental Modeling Center at NOAA’s National Weather Service (NWS), where he oversees 175 staff and more than 20 environmental models that are foundational to NWS forecast operations. Prior NOAA appointments include acting deputy director of the Office of Oceanic and Atmospheric Research, director of the NWS Meteorological Development Lab, and chief of the Program Management Branch in the NWS Office of Science and Technology.Earlier in his career, Farrar served in the U.S. Air Force, where he commanded a 110-person unit responsible for 24/7 weather operations support. After completing the executive leadership program at the Department of Defense's National Defense University, he managed a DOD program charged with sponsoring basic and applied research, largely carried out at dozens of universities, in physical science, mathematics, engineering, and social science. He retired from the Air Force in 2010 with the rank of colonel.

UCAR collaboration with The Weather Company to improve weather forecasts worldwide

BOULDER, Colo. — The University Corporation for Atmospheric Research (UCAR) today announced a new collaboration with The Weather Company, an IBM business, to improve global weather forecasting. The partnership brings together cutting-edge computer modeling developed at the National Center for Atmospheric Research (NCAR) with The Weather Company's meteorological science and IBM's advanced compute equipment."This is a major public-private partnership that will advance weather prediction and generate significant benefits for businesses making critical decisions based on weather forecasts," said UCAR President Antonio J. Busalacchi. "We are gratified that taxpayer investments in the development of weather models are now helping U.S. industries compete in the global marketplace."UCAR, a nonprofit consortium of 110 universities focused on research and training in the atmospheric and related Earth system sciences, manages NCAR on behalf of the National Science Foundation.With the new agreement, The Weather Company will develop a global forecast model based on the Model for Prediction Across Scales (MPAS), an innovative software platform developed by NCAR and the Los Alamos National Laboratory.The Model for Prediction Across Scales (MPAS) enables forecasters to combine a global view of the atmosphere with a higher-resolution view of a particular region, such as North America. (@UCAR. This image is freely available for media & nonprofit use.)MPAS offers a unique way of simulating the global atmosphere while providing users with more flexibility when focusing on specific regions of interest. Unlike traditional three-dimensional models that calculate atmospheric conditions at multiple points within a block-shaped grid, it uses a hexagonal mesh resembling a honeycomb that can be stretched wide in some regions and compressed for higher resolution in others. This enables forecasters to simultaneously capture far-flung atmospheric conditions that can influence local weather, as well as small-scale features such as vertical wind shear that can affect thunderstorms and other severe weather.Drawing on the computational power of GPUs — graphics processing units — such as those being used in a powerful new generation of IBM supercomputers, and on the expertise of NCAR and The Weather Company, the new collaboration is designed to push the capabilities of MPAS to yield more accurate forecasts with longer lead times. The results of NCAR's work will be freely available to the meteorological community. Businesses, from airlines to retailers, as well as the general public, stand to benefit.Mary Glackin, head of weather science and operations for The Weather Company, said, "As strong advocates for science, we embrace strong public-private collaborations that understand the value science brings to society, such as our continued efforts with UCAR to advance atmospheric and computational sciences.""Thanks to research funded by the National Science Foundation and other federal agencies, society is on the cusp of a new era in weather prediction, with more precise short-range forecasts as well as longer-term forecasts of seasonal weather patterns," Busalacchi said. "These forecasts are important for public health and safety, as well as enabling companies to leverage economic opportunities in ways that were never possible before."About The Weather CompanyThe Weather Company, an IBM Business, helps people make informed decisions and take action in the face of weather. The company offers weather data and insights to millions of consumers, as well as thousands of marketers and businesses via Weather’s API, its business solutions division, and its own digital products from The Weather Channel ( and Weather Underground ( webpage was last updated on July 5, 2017.

UCAR statement on U.S. withdrawal from Paris climate agreement

BOULDER, Colo. — President Donald Trump today announced he is withdrawing the United States from the Paris Agreement on climate change, a global pact signed by more than 190 countries to cut carbon dioxide emissions. He also said he would seek to renegotiate it or forge a new agreement. Antonio J. Busalacchi, the president of the University Corporation for Atmospheric Research (UCAR), issued the following statement:Today's decision to begin withdrawing from the Paris Agreement under its current terms creates new uncertainties about the future of our climate. At a time when our economic well-being and national security depend increasingly on accurate predictions of the impacts of greenhouse gas emissions, investments in climate research are even more necessary so scientists can project climate change in the new policy environment.Climate change poses major risks to food and water supplies, transportation systems, and other resources in the United States and worldwide. Rising temperatures and their impacts on weather patterns are creating additional stress at a time of international conflicts, endangering our economic and military security. If average global temperatures rise more than 2 degrees Celsius — the target of the Paris Agreement — research indicates that damaging impacts, such as sea level rise, intense heat waves and droughts, and shifts in weather patterns and storms will become more severe. With today’s decision, scientists will need to focus more attention on the potential ramifications of failing to curb emissions sufficiently to meet the 2-degree target.Nations are amassing information about future climate conditions as a necessary precondition for competing in the global marketplace. Multinational corporations are seeking to mitigate their exposure to climate risks, and if they cannot get the needed information from U.S.-funded research they will go elsewhere to get the most authoritative information. U.S. rivals, including China, are conducting vigorous climate research projects that support their economic and military investments and expand their influence worldwide. Even if the United States no longer participates in climate agreements, it cannot afford to cede climate knowledge to overseas competitors.Climate research is fundamentally nonpartisan. The work under way at the National Center for Atmospheric Research, in collaboration with our partners at government agencies, the university community, and the private sector, builds an evidence-based picture of the possible future impacts of climate change. As always, we stand ready to provide the results of our scientific inquiry to Congress and the administration in order to keep our nation secure and prosperous.Today's decision does not mean that climate change will go away. To the contrary, the heightened potential for increased greenhouse gas emissions poses a substantial threat to our communities, businesses, and military. The work by U.S. researchers — to understand and anticipate changes in our climate system and determine ways to mitigate or adapt to the potential impacts — is now more vital than ever.


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