This Week from AGU: Weak solar activity could expose aircrews to higher radiation

April 05, 2017


Research links decline in hemlock forests to changes in water resources

An insect infestation that is killing hemlock trees in New England forests is having a significant impact on the water resources of forested ecosystems that provide essential water supplies to one of the nation's most populous regions, a new study in Geophysical Research Letters finds.

Impending weak solar activity could expose aircrews to higher radiation levels

Aircrews and frequent fliers may soon experience an uptick in radiation exposure due to the upcoming low point in the solar cycle, when weak solar activity provides less protection against cosmic rays entering the atmosphere, according to a new study published in Space Weather.

Untangling Uranus's topsy-turvy magnetosphere

New observations of Uranus being buffeted by shock waves from the sun have revealed auroral activity and fresh clues to the workings of the seventh planet's unusual magnetosphere, the region of space dominated by its magnetic field. The findings are reported in a new study in Journal of Geophysical Research-Space Physics.

Lightning could be sending powerful electromagnetic radiation into space

During a thunderstorm, lightning that hits the ground may be shooting powerful electromagnetic radiation skyward. At least that is the new theory, detailed in a new study in Geophysical Research Letters, from a physicist in China who specializes in laser-plasma interactions.

Meteorologists Track Wildfires Using Satellite Smoke Images

Enhancements to the National Oceanic and Atmospheric Administration's decision support system give forecasters new capabilities for tracking smoke from fires using satellite data.

Research Spotlights

Mysterious "Fairy Circles" Continue to Enchant Scientists

Researchers revisit an old theory about the ethereal patterns of vegetation that form in some arid landscapes in a new study in Journal of Geophysical Research: Biogeosciences.

Explaining Unexpected Twists in the Sun's Magnetic Field

New research in Journal of Geophysical Research: Space Physics shows how the Sun's magnetic field can shift when it approaches Earth, which can throw off space weather forecasts.

Looking Up: Taking Photos May Improve Climate Models

Snapshots of clouds taken from the ground reveal orders of magnitude more detail than satellites, according to a new study in Journal of Geophysical Research: Atmospheres.

How the Deep, Cold Currents of the Labrador Sea Affect Climate

Seventeen years of ocean current data link global atmospheric and oceanic circulation, scientists report in new study in Journal of Geophysical Research: Oceans

What Regions Are Most at Risk for Ice Loss in East Antarctica?

Scientists model the impact of environmental warming on ice drainage basins in the less studied East Antarctica in a new study in Geophysical Research Letters.

Why Do Great Earthquakes Follow Each Other at Subduction Zones?

A decade of continuous GPS measurements in South America indicates that enhanced strain accumulation following a great earthquake can initiate failure along adjacent fault segments, according to a new study in Geophysical Research Letters.
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Related Magnetic Field Articles from Brightsurf:

Investigating optical activity under an external magnetic field
A new study published in EPJ B by Chengping Yin, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China, aims to derive an analytical model of optical activity in black phosphorous under an external magnetic field.

Magnetic field and hydrogels could be used to grow new cartilage
Instead of using synthetic materials, Penn Medicine study shows magnets could be used to arrange cells to grow new tissues

Magnetic field with the edge!
This study overturns a dominant six-decade old notion that the giant magnetic field in a high intensity laser produced plasma evolves from the nanometre scale.

Global magnetic field of the solar corona measured for the first time
An international team led by Professor Tian Hui from Peking University has recently measured the global magnetic field of the solar corona for the first time.

Magnetic field of a spiral galaxy
A new image from the VLA dramatically reveals the extended magnetic field of a spiral galaxy seen edge-on from Earth.

How does Earth sustain its magnetic field?
Life as we know it could not exist without Earth's magnetic field and its ability to deflect dangerous ionizing particles.

Scholes finds novel magnetic field effect in diamagnetic molecules
The Princeton University Department of Chemistry publishes research this week proving that an applied magnetic field will interact with the electronic structure of weakly magnetic, or diamagnetic, molecules to induce a magnetic-field effect that, to their knowledge, has never before been documented.

Origins of Earth's magnetic field remain a mystery
The existence of a magnetic field beyond 3.5 billion years ago is still up for debate.

New research provides evidence of strong early magnetic field around Earth
New research from the University of Rochester provides evidence that the magnetic field that first formed around Earth was even stronger than scientists previously believed.

Massive photons in an artificial magnetic field
An international research collaboration from Poland, the UK and Russia has created a two-dimensional system -- a thin optical cavity filled with liquid crystal -- in which they trapped photons.

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