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Recent Articles
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Topic: Ozone
Hubble did not look at Earth directly. Instead, the astronomers used the Moon as a mirror to reflect sunlight, which had passed through Earth’s atmosphere, and then reflected back towards Hubble. ![]() This illustration shows the Hubble Space Telescope superimposed on an image of the Moon, seen during a lunar eclipse. Taking advantage of a total lunar eclipse in January 2019, astronomers using NASA’s Hubble Space Telescope have detected ozone in Earth’s atmosphere. This method serves as a proxy for how they will observe Earth-like planets transiting in front of other stars in search of life. (M. Kornmesser (ESA/Hubble), NASA, and ESA) «Read the rest of this article» Sections: Technology | No Comments
NASA Observes Australia’s Bushfires, From Smoke Going Round the World to Aerosol Levels
In an image created from data gathered by the Ozone Mapping and Profiler Suite (OMPS) Nadir Mapper on Suomi NPP, a black circle shows the smoke which had been traced from its origins coming back to the eastern region of Australia after having traveled around the world. ![]() This image of the UV aerosol index from the Suomi NPP satellite OMPS Nadir Mapper instrument showing a “close-up” from Jan. 13, 2020 (specifically orbit 42546). The image reveals that the smoke has now made its all the way back to eastern Australia (black circle). The red circle shows “newly formed” (or current) smoke that has just been emitted from the fires. The green circle shows the dust from an intense dust storm. (NASA/Colin Seftor) «Read the rest of this article» Sections: Technology | No Comments
NASA reports Ozone Hole Smallest on Record Since Its Discovery
The annual ozone hole reached its peak extent of 6.3 million square miles (16. 4 million square kilometers) on September 8th, and then shrank to less than 3.9 million square miles (10 million square kilometers) for the remainder of September and October, according to NASA and NOAA satellite measurements. During years with normal weather conditions, the ozone hole typically grows to a maximum area of about 8 million square miles in late September or early October. ![]() The 2019 ozone hole reached its peak extent of 6.3 million square miles (16. 4 million square kilometers) on September 8th. Abnormal weather patterns in the upper atmosphere over Antarctica dramatically limited ozone depletion this year. (NASA) «Read the rest of this article» Sections: Technology | No Comments
NASA study discovers Greenhouse Gas ‘Detergent’ Recycles Itself in AtmosphereNASA’s Earth Science News Team
Understanding its role in the atmosphere is critical for determining the lifetime of methane, a powerful contributor to climate change. The hydroxyl (OH) radical, a molecule made up of one hydrogen atom, one oxygen atom with a free (or unpaired) electron is one of the most reactive gases in the atmosphere and regularly breaks down other gases, effectively ending their lifetimes. «Read the rest of this article» Sections: Technology | No Comments
NASA ends Tropospheric Emission Spectrometer instrument’s missionWritten by Carol Rasmussen
TES was planned for a five-year mission but far outlasted that term. ![]() TES collected spectral “signatures,” illustrated here, of ozone and other gases in the lower atmosphere. (NASA) «Read the rest of this article» Sections: Technology | No Comments
NASA observations show 20 percent decrease in Ozone Hole DepletionWritten by Samson Reiny
Measurements show that the decline in chlorine, resulting from an international ban on chlorine-containing human-produce chemicals called chlorofluorocarbons (CFCs), has resulted in about 20 percent less ozone depletion during the Antarctic winter than there was in 2005 — the first year that measurements of chlorine and ozone during the Antarctic winter were made by NASA’s Aura satellite. ![]() Using measurements from NASA’s Aura satellite, scientists studied chlorine within the Antarctic ozone hole over the last several years, watching as the amount slowly decreased. (NASA’s Goddard Space Flight Center/Katy Mersmann) «Read the rest of this article» Sections: Technology | No Comments
NASA’s TSIS-1 instrument to monitor Earth’s Ozone LayerWritten by Rani Gran
Currently, several NASA and National Oceanic and Atmospheric Administration (NOAA) satellites track the amount of ozone in the upper atmosphere and the solar energy that drives the photochemistry that creates and destroys ozone. ![]() TSIS-1 will be affixed to the International Space Station in December 2017 TSIS-1 operates like a sun flower: it follows the Sun, from the ISS sunrise to its sunset, which happens every 90 minutes. At sunset, it rewinds, recalibrates and waits for the next sunset. (NASA/LASP) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Spitzer Space Telescope discover Star with Seven Earth Sized Planets in OrbitWritten by Elizabeth Landau
The discovery sets a new record for greatest number of habitable-zone planets found around a single star outside our solar system. All of these seven planets could have liquid water — key to life as we know it — under the right atmospheric conditions, but the chances are highest with the three in the habitable zone. ![]() The TRAPPIST-1 star, an ultra-cool dwarf, has seven Earth-size planets orbiting it. This artist’s concept appeared on the cover of the journal Nature in Feb. 23, 2017 announcing new results about the system. (NASA/JPL-Caltech) «Read the rest of this article» Sections: Technology | No Comments
NASA Researchers are developing new technologies to discover Earth-like Planets beyond our Solar SystemWritten by Whitney Clavin
These aliens might even have giant space telescopes dedicated to studying distant planets and searching for life. Should one of those telescopes capture an image of our blue marble of a planet, evidence of forests and plentiful creatures would jump out as simple chemicals: oxygen, ozone, water and methane. ![]() The vacuum chamber at NASA’s Jet Propulsion Laboratory in Pasadena, California, used for testing WFIRST and other coronagraphs. (NASA/JPL-Caltech) «Read the rest of this article» Sections: Technology | No Comments
NASA studies how 2015 El Niño effects the World’s ClimateWritten by Alan Buis
New results presented Tuesday, December 15th, at the American Geophysical Union meeting in San Francisco show that atmospheric rivers, significant sources of rainfall, tend to intensify during El Niño events, and this year’s strong El Niño likely will bring more precipitation to California and some relief for the drought. «Read the rest of this article» Sections: Technology | No Comments
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