A detailed study of evaporite (chloride) deposits on Mars shows that small bodies of surface water persisted until about 2.5 Ga, more recently than previously thought.
AGU Advances
Posted inEditors' Highlights
Urbanization and Surface Water Loss Go Together
Mapping surface water loss from satellite data confirms decreases away from urban areas. A simple exponential distance-decay model approximates the impact of urbanization.
Posted inEditors' Highlights
What Conditions Accompanied the Late Ordovician Mass Extinction?
The second-largest mass extinction in Earth’s history took place in a period of stresses from non-sulfidic anoxia in shelf areas, together with glacioeustatic sea-level change and climatic cooling.
Posted inEditors' Highlights
A Deep-Space Origin for Volatile-Rich Asteroids
Spectral data and modeling suggest that volatile-rich main-belt asteroids initially formed at much greater distances from the Sun (>10 AU).
Posted inEditors' Highlights
The Flowers that Bloom in the Spring (but Later)
Mismatch between the pace of climate change and crop phenology may signal a new challenge for climate change adaptation.
Posted inEditors' Highlights
Hot Lakes in a Cold Climate
Arctic warming may release less carbon dioxide from high latitude lakes but increase their climate impact by releasing more methane.
Posted inEditors' Highlights
Tracking from Space how Extreme Drought Impacts Carbon Emissions
Carbon dioxide emissions from wildfires combined with reduced carbon uptake by intact ecosystems during the 2019-202
0 fire season to approximately double Australia’s annual carbon emissions.
Posted inEditors' Highlights
Transforming Hydrology by Integrating Sensors and Disciplines
Satellite sensing has transformed hydrology by providing global information on variables and fluxes. Breakthroughs will come from integrating sensing information and cross-disciplinary approaches.
Posted inEditors' Highlights
What Controls Nitrous Oxide Emissions from Rivers?
Statistical and numerical models show that denitrification efficiency is a key parameter controlling the production of N2O from rivers, providing a target for river restoration projects.
Posted inEditors' Highlights
Dungeness Crab at Risk from Multiple Climate-Related Stressors
The lucrative Dungeness crab fishery is at risk because of the combined effects of projected climate-related habitat changes: lower oxygen, warming temperature, and increased acidity.