Perspective

Supercomputer visualization of Hurricane Sandy, including near-surface winds and radar reflectivity
October 01, 2013
Though Hurricane Sandy struck almost a year ago, the fearsome cyclone lives on within the circuits of supercomputers that are replicating its unusual evolution and track.
Front Range disaster: flood waters in south Boulder, Colorado, September 12, 2013
September 14, 2013
Four days of rainfall across Colorado’s Front Range produced massive flooding that’s marooned thousands, inundated key roads, and damaged countless homes and businesses. Just how rare was this event?
Tornado and wall cloud: Is long-range tornado prediction feasible?
July 29, 2013
Just as forecasters now peg the odds of a busy Atlantic hurricane season months in advance, we might soon have outlooks that assess the risk of an active tornado season weeks or even months ahead of time.
Wedge tornado near El Reno on May 31, 2013
June 07, 2013
The world of severe storm science was shaken by the deaths of three longtime researchers in a vicious tornado on May 31. The storm also raised serious questions about how urban dwellers can best respond to tornado threats.
Carbon dioxide and the Keeling Curve: depiction of recent trends against blue sky
May 15, 2013
Carbon dioxide concentrations in the atmosphere have crossed a major threshold: 400 parts per million. Here are five key points on how carbon dioxide is affecting Earth’s atmosphere and the role we're playing in it.
Putting cold in context: Snowfall atop Ozark Mountains, May 4, 2013
May 09, 2013
The last month has seen a trail of smashed records across the central United States, as pulse after pulse of cold air careened down the Great Plains. How does this fit into the bigger picture of a warming U.S. climate?
Mountain pine beetle damage near Grand Lake, Colorado
April 15, 2013
Forests across western North America have been ravaged by the most extensive bark beetle attacks on record. Scientists are getting a better handle on what comes next—and the answers aren’t as straightforward as they expected.
Snow measurement: Ethan Gutmann checks automated equipment
March 18, 2013
If predicting snow is a tough business, measuring it is no piece of cake either.
Predicting snowstorms: Accumulations from blizzard photographed on February 9, 2013, in Billerica, Massachusetts
March 04, 2013
A major winter storm is threatening the Washington, D.C., area this week, on the heels of record-setting snowfalls and blizzard conditions in several parts of the United States last month. Are these onslaughts catching people off guard?
Eye-like feature within stratocumulus in coastal eddy off southern California coast
February 22, 2013
Satellite images have revealed at least three dramatic eye-like features not far off the U.S. Atlantic and Pacific coasts over the last several weeks. While these can look startlingly like the eyes of hurricanes, they’re not quite the same thing.

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The University Corporation for Atmospheric Research manages the National Center for Atmospheric Research under sponsorship by the National Science Foundation. Any opinions, findings and conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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