New orbiter data support an important role for seasonal frost—not liquid water—in the formation of Martian gullies.
Geophysical Research Letters
Posted inResearch Spotlights
Spotting the Source of Slow Solar Wind
A new study suggests that magnetic reconnection may fuel slow solar winds, which top out at speeds below 500 kilometers per second.
Posted inResearch Spotlights
Does Water Vapor from Volcanic Eruptions Cause Climate Warming?
By studying past volcanic eruptions, scientists find that the amount of water vapor reaching the stratosphere during moderately explosive eruptions may not be contributing to the greenhouse effect.
Posted inResearch Spotlights
Cold Temperatures Set Off Slow-Moving Landslides
Falling ground temperatures in the cold season are found to trigger shallow, slow-moving landslides on slopes with clayey soil.
Posted inResearch Spotlights
Minerals Hint at Liquid Groundwater, More Oxygen in Mars's Past
Manganese deposits in Gale Crater fractures are similar to Earth features that usually require flowing water and highly oxidizing conditions.
Posted inResearch Spotlights
Going Against the Flow: Documenting Seasonal Current Reversal
Scientists discover the source of a coastal Korean current that reverses its flow in the summer.
Posted inResearch Spotlights
Tackling the Paris Temperature Targets
The global temperature targets established in Paris in 2015 are ambitious; new research examines what it would take to achieve those targets.
Posted inResearch Spotlights
How Irrigation in Asia Affects Rainfall in Africa
Up to 40% of the total rainfall in arid parts of East Africa may be caused by water vapor from farming practices in South Asia.
Posted inResearch Spotlights
In the Eastern Pacific Ocean, the "Blob" Overshadows El Niño
Underwater gliders and ocean modeling reveal unexpectedly weak El Niño effects on a major West Coast current.
Posted inAGU News
New Geophysical Research Letters Editorial, Revisions Policies
Changes in submittal, editorial, and review policies support high standards and timely publication in the face of the increasing number of papers submitted.