Posts filtered by tags: Geophysical Research Letters[x]


Climate Models Are Getting Future Warming Projections

Alan Buis of NASA's Jet Propulsion Laboratory, writes: There's an old saying that "the proof is in the pudding," meaning that you can only truly gauge the quality of something once it's been put to a test. Such is the case with climate models: mathematical computer simulations of the various factors that interact to affect Earth's climate, such as our atmosphere, ocean, ice, land surface and the Sun. For decades, people have legitimately wondered how well climate models perform in predicting fut...
Tags: Tech, Nasa, Earth, University Of California Berkeley, Goddard Institute for Space Studies, Geophysical Research Letters, Alan Buis, Zeke Hausfather

Map of water ice on Mars shows where NASA (and SpaceX) are likely to send their first astronauts

A newly published survey pinpointing where Martian water ice is likely to lie close to the surface could serve as a roadmap for establishing the first human settlement. The survey, published in Geophysical Research Letters, is based on readings from the Mars Climate Sounder on NASA's Mars Reconnaissance Orbiter, plus the Thermal Emission Imaging System and Gamma Ray Spectrometer on the Mars Odyssey orbiter. Those readings point to water ice deposits that could lie within a foot, or even an i...
Tags: Spacex, Science, Nasa, Mars, Geophysical Research Letters, Gamma Ray Spectrometer

OK. We're off. Water ice found just below the surface of Mars. Good enough for us. Let's go. Impulse power, Mr Sulu

Let's grab a nice cold drink on the Red Planet. Don't forget to pack a shovel There’s water ice buried below the surface of Mars, and all you’ll need is a shovel to dig some up, according to research published in Geophysical Research Letters this week.…
Tags: Software, Mars, Sulu, Geophysical Research Letters, Red Planet Don

Mars 2020 will hunt for 'microfossils', signs of ancient alien life

The Jerezo crater is likely home to hydrated silica, a material which on Earth is especially good at preserving signs of life.Mars 2020 is set to land on the planet crater in February 2021. NASA's Curiosity rover is currently the only rover operating on Mars.The discovery of past life on Mars would be revolutionary, at least in science and philosophy. None The Mars 2020 rover is set to search for signs of past alien life when it lands on the red planet in 2021. NASA hopes to land the rover on ...
Tags: Space, Brown University, Nasa, Earth, Innovation, Mars, Astrobiology, Vanderbilt University, Copernicus, Johnson Space Center, Geophysical Research Letters, Allan Hills, David Weintraub, Jesse Tarnas, Mars Jerezo, Astronomy None Today Mars

Coastlines' contribution to climate change might have been underestimated

(GFZ GeoForschungsZentrum Potsdam, Helmholtz Centre) Permafrost coasts make up about one third of the Earth's total coastline. As a result of accelerated climate change, whole sections of coastline rapidly thaw, and erode into the Arctic Ocean. A new study published in the journal Geophysical Research Letters now shows that large amounts of carbon dioxide are potentially being produced along these eroding permafrost coastlines in the Arctic.
Tags: Earth, Arctic Ocean, Geophysical Research Letters, Potsdam Helmholtz Centre Permafrost

Scientists discover big storms can create 'stormquakes'

The shaking of the sea floor during hurricanes and nor'easters can rumble like a magnitude 3.5 earthquake and can last for days, according to a study in this week's journal Geophysical Research Letters. A stormquake is more an oddity than something that can hurt you, because no one is standing on the sea floor during a hurricane, said Wenyuan Fan, a Florida State University seismologist who was the study's lead author. "This is the last thing you need to worry about," Fan told The Associated P...
Tags: News, Fan, Florida State University, Geophysical Research Letters

Scientists discover big storms can create ‘stormquakes’

WASHINGTON (AP) — Scientists have discovered a mash-up of two feared disasters — hurricanes and earthquakes — and they’re calling them “stormquakes.” The shaking of the sea floor during hurricanes and nor’easters can rumble like a magnitude 3.5 earthquake and can last for days, according to a study in this week’s journal Geophysical Research Letters. […]
Tags: Science, News, Washington, Ap, Nation, Geophysical Research Letters

A Giant Hole in the Martian Atmosphere Is Venting All Its Water into Space

There's a hole in the Martian atmosphere that opens once every two years, venting the planet's limited water supply into space -- and dumping the rest of the water at the planet's poles.That's the explanation advanced by a team of Russian and German scientists who studied the odd behavior of water on the Red Planet. Earthbound scientists can see that there's water vapor high in the Martian atmosphere, and that water is migrating to the planet's poles. But until now, there...
Tags: Science, Earth, Mars, Northern Hemisphere, Red Planet, Geophysical Research Letters, Northern Hemisphere When, Ways to Hunt Intelligent Aliens

Radioactive remnants of decades-old nuclear bomb tests have settled on the ocean floor

Nuclear weapons testing dates back to the mid 1940s and ramped up significantly starting in the early 1950s. Several countries, including the U.S., Soviet Union, China and France spent decades testing new versions of the incredibly destructive arms and, as a new study shows, the Earth is still dealing with the fallout.In a new paper published in Geophysical Research Letters, researchers found traces of radioactive carbon from bomb tests in the 1950s and 1960s still present in organisms who call ...
Tags: Science, France, Earth, Soviet Union China, Geophysical Research Letters, Ning Wang

Traces of Roman-era pollution stored in the ice of Mont Blanc

The deepest layers of carbon-14 dated ice found in the French Alps provide a record of atmospheric conditions in the ancient Roman era. Published in Geophysical Research Letters, the study, led by an international team and coordinated by a CNRS scientist, reveals significant atmospheric pollution from heavy metals: the presence of lead and antimony is linked to mining activity and lead and silver production by the ancient Romans.
Tags: Science, Mont Blanc, French Alps, CNRS, Geophysical Research Letters

Radioactive carbon from nuclear bomb tests found in deep ocean trenches

Radioactive carbon released into the atmosphere from 20th-century nuclear bomb tests has reached the deepest parts of the ocean, a new study in AGU's journal Geophysical Research Letters finds. Crustaceans in deep ocean trenches have incorporated this 'bomb carbon' into the molecules that make up their bodies.
Tags: Geophysical Research Letters

Hubble discovers a mysterious dark spot on Neptune, and it’s getting bigger

The mighty Jupiter gets a lot of attention for its constantly-shifting face, but it's not the only planet in our solar system with some serious personality. Neptune, the large frozen ball of methane and various other frigid gasses sitting way out in the outer reaches of our system, is surprisingly active, and the Hubble Space Telescope just caught it doing something nobody had ever seen before.Astronomers have known for a long time that Neptune's surface occasionally becomes dotted with ...
Tags: Science, Nasa, Hubble, Jupiter, Hubble Space Telescope, Neptune, Geophysical Research Letters

Antarctic snowfall dominated by a few extreme snowstorms

A new study, published in Geophysical Research Letters, reveals the importance of a small number of intense storms around Antarctica in controlling the amount of snow falling across the continent.
Tags: Antarctica, Geophysical Research Letters

Water Molecules Bounce Around the Moon. Here's Why.

When the clock strikes lunar noon, water molecules begin to dance around on the light side of the moon.As the moon's surface heats up, water molecules detach and find another, cooler spot to hang out until temperatures cool back down, scientists found using data from NASA's Lunar Reconnaissance orbiter (LRO), which has been circling the moon since 2009.Water on the surface of the moon exists mainly in two forms: frozen as stretches of ice always shrouded in darkness near the poles and as...
Tags: Science, Nasa, Earth, Moon, Planetary Science Institute, Geophysical Research Letters, Amanda Hendrix

Scientists found moving water on the Moon

The Moon apparently isn't nearly as dry as scientists once thought. That's the message from researchers using data from NASA's Lunar Reconnaissance Orbiter to detect water molecules and the behavior of the moisture over the course of a lunar day.Earth's Moon was once assumed to be a dry and dusty place, but over time that image has changed. Scientists discovered ice present near its poles, and more recently we've learned that liquid water does indeed exist within the lunar su...
Tags: Science, Nasa, Moon, Geophysical Research Letters, LRO, Lyman Alpha Mapping Project

SwRI-led LAMP instrument sheds light on lunar water movement

Using the Southwest Research Institute-led Lyman Alpha Mapping Project (LAMP) aboard NASA's Lunar Reconnaissance Orbiter (LRO), scientists have observed water molecules moving around the dayside of the Moon. A paper published in Geophysical Research Letters describes how LAMP measurements of the atom-thick layer of sparse molecules helped characterize lunar hydration changes over the course of a day.
Tags: Science, Nasa, Lyman, Southwest Research Institute, Geophysical Research Letters

New study predicts mass extinction in 140 years

A new study suggests that the old saying about history repeating itself is absolutely true. In this case, history repeating itself pertains to none other than the topic on everyone’s minds— extinction. Researchers believe it’s taken 56 million years for earth to face another mass extinction that can occur in as little as 140 years.  The research, released last Wednesday and published in Geophysical Research Letters, compares conditions in the Paleocene–Eocene Thermal Maximum (PETM) period with ...
Tags: Design, Earth, Atlantic, University Of Michigan, Geophysical Research Letters, Gingerich, PETM, Earther, Eocene Thermal Maximum PETM, Philip Gingerich

Declining snowpack over western US mapped at a finer scale

Researchers mapped the changes in snow mass from 1982 to 2016 onto a grid of squares 2.5-miles on a side over the entire contiguous U.S. Grid size for previous studies was about 40 miles on a side. Since 1982, some parts of the West have a 41 percent reduction in the yearly maximum mass of snow. The research is scheduled for publication in Geophysical Research Letters on December 12.
Tags: Science, US, Geophysical Research Letters

Atmospheric scientists find causes of firenado in deadly Carr Fire

Atmospheric scientist Neil Lareau at the University of Nevada, Reno has authored a paper in the scientific journal Geophysical Research Letters documenting the rare firenado, finding a number of factors that combined at just the right time and place to catalyze the deadly Carr Fire in Northern California. These observations may help forecasters and scientists identify -- and potentially warn - for future destructive fire-generated vortices.
Tags: Science, Northern California, Carr, University of Nevada Reno, Geophysical Research Letters, Neil Lareau

Carbon goes with the flow

(Michigan State University) Many people see the carbon cycle as vertical -- CO2 moving up and down between soil, plants and the atmosphere.However, new Michigan State University research published in the current issue of Geophysical Research Letters, adds a dimension to the vertical perspective by showing how water moves massive amounts of carbon laterally through ecosystems -- especially during floods. These findings -- which analyzed more than 1,000 watersheds, covering about 75 percent of the...
Tags: US, Michigan, Michigan State University, Geophysical Research Letters

Mystery ozone-damaging emissions are coming from China, scientists discover

Mysterious emissions which are preventing the hole in the ozone layer from closing are coming from China, scientists have discovered. Researchers from the University of Bristol have found significant ongoing fumes of a potent ozone-depleting substance have their origin eastern China. The compound, carbon tetrachloride, contributes to the destruction of the Earth’s ozone layer, which protects us from harmful ultraviolet radiation.  As a result, the production of carbon tetrachloride has been bann...
Tags: Asia, Usa, Science, China, Nasa, Earth, Bristol, University of Bristol, Shandong, Geophysical Research Letters, Lunt, British Antarctic, University of Bristol 's School of Chemistry, South Korea Switzerland Australia, Mark Lunt, Matt Rigby

Arctic ice sets speed limit for major ocean current

(Massachusetts Institute of Technology) Scientists at MIT have now identified a key mechanism, which they call the 'ice-ocean governor,' that controls how fast the Beaufort Gyre spins and how much fresh water it stores. In a paper published today in Geophysical Research Letters, the researchers report that the Arctic's ice cover essentially sets a speed limit on the gyre's spin.
Tags: Mit, Arctic, Geophysical Research Letters, Massachusetts Institute of Technology Scientists

Vibrating slab of Antarctic ice sounds like a horror movie

In the faraway realms at the bottom of the Earth, Antarctic scientists have unexpectedly recorded bizarre drone-like sounds. After burying 34 seismic monitors in the snow atop the Ross Ice Shelf in 2014 — which is a massive Texas-sized slab of ice that floats over the Southern Ocean — the instruments picked up near-constant "buzzing" noises.  While normally inaudible to the human ear, the researchers have made these ultra-low frequencies detectable to our limited hearing range. They posted the e...
Tags: Texas, Science, Antarctica, University Of Chicago, Ross, Antarctic, Colorado State University, Southern Ocean, Antartica, Geophysical Research Letters, Douglas MacAyeal, Julien Chaput

STEVE, The Purple Light in the Sky, Is Still a Mystery to Scientists

A new study published in Geophysical Research Letters examined one explanation for STEVE: that it was a rare type of aurora.
Tags: Science, Steve, Geophysical Research Letters

Previously stable zones of Antarctica are now falling victim to climate change

Unlike its counterpart, West Antarctica, which has long been decimated by melting ice caps, East Antarctica used to be a safe zone – something scientists could depend on as a constant while they solved the more pressing destruction in the western part of the continent. Unfortunately, this is no longer the case. According to research unveiled last week in the journal Geophysical Research Letters, despite the higher elevation and colder temperatures found in the eastern portion of the Antarctic c...
Tags: Design, Nasa, Earth, Antarctica, University Of California, Antarctic, East Antarctica, East Antarctic, West Antarctica, Geophysical Research Letters, Earther Yara Mohajerani

Humans Are Making These Mysterious Clouds More Common

An otherworldly cloud phenomena found high in Earth’s atmosphere is becoming more visible due to our greenhouse gas emissions, according to a new study published in Geophysical Research Letters this month.Read more...
Tags: Science, Climate Change, Earth, Clouds, Methane, Geophysical Research Letters, Head In The Clouds

Coldest temperature ever recorded makes Earth "almost like another planet"

With climate change comes extreme temperatures, and scientists just recorded a new low. Nearly 15 degrees colder than the previous record-breaking coldest temperature, which was -128 degrees in 1983 near the South Pole, the temperature in Antarctica dropped to -144 degrees Fahrenheit. Temperatures this low make Antarctica "almost like another planet," says lead researcher Ted Scambos at the National Snow and Ice Data Center in Boulder, Colorado, quoted in Forbes. Taking just a few breaths o...
Tags: Post, News, Climate Change, Earth, Antarctica, Forbes, South Pole, Boulder Colorado, Geophysical Research Letters, Ice Data Center, Cold Snaps, Ted Scambos, Forbes Taking

Who shares similar experiences of climate change in a 1.5°C world and beyond?

A new framework to understand how uneven the effects of a 1.5°C world are for different countries around the world has been published today in Geophysical Research Letters, led by researchers from the Environmental Change Institute (ECI) at the Oxford University Department of Geography.
Tags: Geophysical Research Letters, Environmental Change Institute ECI

Who shares similar experiences of climate change in a 1.5°C world and beyond?

A new framework to understand how uneven the effects of a 1.5°C world are for different countries around the world has been published today in Geophysical Research Letters, led by researchers from the Environmental Change Institute (ECI) at the Oxford University Department of Geography.
Tags: Science, Geophysical Research Letters, Environmental Change Institute ECI

What caused 2014’s bird die-off on the Pacific coast? Scientists blame the Blob

Researchers have untangled the mystery behind a die-off that felled hundreds of thousands of tough seabirds known as Cassin’s auklets in 2014 and early 2015. It’s not a simple answer: The proximate cause was starvation, but in a study published by Geophysical Research Letters, scientists report that the most likely root cause was an anomaly in Pacific Ocean circulation that came to be known as the Blob. “This paper is super important for the scientific community because it nails the causality of...
Tags: Science, Pacific Ocean, University of Washington, Pacific Coast, Geophysical Research Letters, Cassin, Julia Parrish