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spectroscopy

Posted inEditors' Vox

Using Cave Formations to Investigate Ancient Wildfires

by Micheline Campbell, Liza McDonough, Pauline C. Treble and Andy Baker 2 May 20231 May 2023

From sediment cores to speleothems, environmental archives are helping us to understand the history of wildfires.

Color view of Europa from Galileo that shows the largest portion of the moon’s surface at the highest resolution.
Posted inNews

Newly Discovered Salts May Exist on Icy Moons

by Derek Smith 23 March 202311 April 2023

For the first time in more than a century, scientists have identified new sodium chloride crystals. The discovery may reconcile puzzling spectroscopic images of Europa’s surface.

Photograph of a rocky hillslope with two people sitting at the top, in the distance.
Posted inNews

UV Radiation Contributed to Earth’s Biggest Mass Extinction

Rachel Fritts, Science Writer by Rachel Fritts 10 February 202327 February 2023

To find the first direct evidence of heightened UV radiation during the end-Permian mass extinction, researchers turned to chemical evidence preserved in pollen grains.

Two young people riding aboard a boat pick through mud with their hands in search of meteorites.
Posted inNews

Community Scientists Recover Micrometeorites from Lake Michigan

Katherine Kornei, Science Writer by Katherine Kornei 15 August 202224 March 2023

A team of scientists, educators, and teenagers discovered the objects, some of which may have been delivered by a fireball that streaked across the sky in 2017.

Uranus and Neptune as seen by Voyager 2
Posted inResearch Spotlights

A Unified Atmospheric Model for Uranus and Neptune

by Morgan Rehnberg 1 August 20221 August 2022

In a new model, three substantial atmospheric layers appear consistent between the ice giants.

Artist’s rendering of the near-Earth object Kamo’oalewa
Posted inNews

Asteroid May Be a Chip off the Old Moon

by Stacy Kish 9 December 202127 March 2023

Spectral data suggest that Kamo‘oalewa, a near-Earth asteroid, has a composition similar to lunar rocks.

The LIBS instrument that is part of SuperCam
Posted inNews

Lasers Have the Makings of a 21st-Century Geoscience Tool

Richard Sima, freelance science writer by Richard J. Sima 15 October 202120 December 2021

Laser-induced breakdown spectroscopy is a versatile geochemical tool being used in a wide range of applications, from Mars rovers to earthly rock identification.

A picture showing the growth rings of an unknown tree species at Bristol Zoo in the United Kingdom
Posted inResearch Spotlights

Tree Rings Show Record of Newly Identified Extreme Solar Activity Event

by Morgan Rehnberg 12 July 202121 February 2023

Mass spectroscopy of tree ring material indicates a sharp, single-year rise in carbon-14 concentrations consistent with an extreme solar energetic particle event that occurred around 5410 BCE.

Hyperspectral imagery shows part of Swain Reefs off the eastern coast of Australia.
Posted inScience Updates

Teams Invited to Test Coastal Hyperspectral Imaging Algorithms

by M. A. McManus and E. Hochberg 15 July 201929 March 2023

Hyperspectral Remote Sensing of Coastal and Inland Waters Webinar; 28 May 2019

Posted inEditors' Highlights

Red and Green Aurora Stop and Go for Different Reasons

by Viviane Pierrard 5 July 201911 August 2022

Green-line arc is found to be embedded within large-scale upward field aligned currents while red-line-only arc is found to be associated with low-energy precipitation bursts.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
Geophysical Research Letters
“Neural Networks Map the Ebb and Flow of Tiny Ponds”
By Sarah Derouin

EDITORS' HIGHLIGHTS
Community Science
“Collaboration Helps Overcome Challenges in Air Quality Monitoring”
By Muki Haklay

EDITORS' VOX
Reviews of Geophysics
“What We Know and Don’t Know About Climate Tipping Elements”
By Seaver Wang

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