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Latest Nitrogen dioxide Stories

aura artist concept
2014-07-16 04:40:49

April Flowers for redOrbit.com - Your Universe Online Ten years ago on July 15, NASA launched the Aura satellite aboard a Delta II 7920-10L rocket into a sun-synchronous, near polar orbit approximately 400 miles above the Earth. Aura, which is Latin for "Breeze," has provided a wealth of data over the past decade, including the cause, concentrations and impact of major air pollutants. Aura's four instruments give scientists a comprehensive view of the Earth's atmosphere by measuring...

NASA Images Highlight US Air Quality Improvement
2014-06-27 03:22:56

Kathryn Hansen, NASA Anyone living in a major US city for the past decade may have noticed a change in the air. The change is apparent in new NASA satellite images unveiled this week that demonstrate the reduction of air pollution across the country. After ten years in orbit, the Ozone Monitoring Instrument (OMI) on NASA's Aura satellite has been in orbit sufficiently long to show that people in major US cities are breathing less nitrogen dioxide – a yellow-brown gas that can cause...

Honey Bees' Ability To Locate Food Masked By Diesel Fumes
2013-10-03 12:53:25

[ Watch the Video: Honeybees Impacted By Diesel Exhaust ] Brett Smith for redOrbit.com - Your Universe Online Scientists are currently in search of an explanation for the decline of honeybee populations around the world and a new study published in the journal Scientific Reports has found that diesel exhaust may be playing a role. In the study, researchers from the University of Southampton found that diesel exhaust fumes change the chemical profile of floral aroma molecules, a...

NASA Study Finds Connection Between Population And Pollution
2013-08-20 14:33:41

Brett Smith for redOrbit.com - Your Universe Online While previous research has linked employment or innovation statistics to urban population density, a new study from NASA scientists has made a connection between pollution and the number of people living in a city. Using satellite observations, the NASA team was able to calculate air pollution's dependence on population for cities in the United States, Europe, China and India. According to the report, which was published in the...

High Nitrogen Dioxide Levels From Three Large Fires In Arizona
2013-07-02 17:24:56

NASA This June 29, 2013 image from the OMI, or Ozone Monitoring Instrument aboard NASA's Aura satellite shows nitrogen dioxide (NO2) levels in Arizona pertaining to three large fires. The highest levels of NO2, which is produced by combustion, were from the Yarnell Hill fire (dark red and brown). NO2 concentration is given as the number of molecules in a cubic centimeter. The highest NO2 concentration values (8-9 x 10^15) indicated that this strong fire was burning a large amount of...

Air Pollution Increases Worldwide
2012-08-01 12:22:05

Atmospheric model calculates changes in air quality over the coming decades Hot summer days cause in large cities very seldom great happiness among inhabitants. On those days the air is highly polluted with automobile and industrial emissions what makes breathing difficult and unhealthy. According to the latest calculations of Max Planck scientist Andrea Pozzer this scenario could become true for most of world population in 2050 if no counteractive measures are taken. Especially China,...

2012-01-13 14:50:24

In a breakthrough paper published in this week's issue of Science magazine, researchers from Sandia's Combustion Research Facility, the University of Manchester and Bristol University report direct measurements of reactions of a gas-phase Criegee intermediate using photoionization mass spectrometry. (visit www.youtube.com/SandiaLabs to see a short video of Sandia combustion chemists discussing the research.) Criegee intermediates — carbonyl oxides — are implicated in...

Pollution Increases Heart Attack Risk
2011-09-21 11:19:03

   According to a study published in the British Medical Journal, high levels of pollution could increase the risk of having a heart attack for up to six hours after exposure. U.K. researchers reviewed 79,288 heart attack cases from 2003 to 2006 and exposure to pollution levels by the hour. Krishnan Bhaskaran, an epidemiologist from the London School of Hygiene and Tropical Medicine, and colleagues used the U.K. National Air Quality Archive to investigate the levels of...

2011-02-22 15:44:01

Differences in air pressure over the North Atlantic have meant that the last two winters in Gothenburg, Sweden, have been extremely cold. This has led to the air in Gothenburg being more polluted with nitrogen oxides than ever before. A new study from the University of Gothenburg shows that there is a strong link between climate and air pollution. The winter weather in Gothenburg and large parts of North-West Europe is partly down to the North Atlantic Oscillation (NAO), in other words the...


Word of the Day
lunula
  • A small crescent-shaped structure or marking, especially the white area at the base of a fingernail that resembles a half-moon.
This word is a diminutive of the Latin 'luna,' moon.
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