Year-round observations show gravity waves above Antarctica exhibit seasonal patterns that peak in winter, which could help researchers trace the source of this mysterious phenomenon.
remote sensing
Posted inResearch Spotlights
New Analysis Provides a Fresh View of the Atmosphere on Venus
Researchers apply a radio holographic method to standard Venusian atmospheric data, resulting in outputs with finer vertical resolution and revealing small-scale atmospheric structures.
Posted inEditors' Highlights
Improving Retrievals for Partially Cloudy Pixels
Cloud retrievals for partly cloudy pixels might be able to be improved by using high-resolution samples in a visible to near-infrared band, which many satellite sensors offer.
Posted inNews
Enormous Impact Crater Spotted in Greenland Under Glacial Ice
Ice-penetrating radar revealed a 31-kilometer impact crater—one of the world’s largest—in northwestern Greenland that might have been formed fewer than 20,000 years ago.
Posted inScience Updates
Satellite Observations of Ocean Surface Winds and Currents
Florida State University workshop on Satellite Observations of Ocean Surface Winds & Currents; La Jolla, California, 18–19 May 2018
Posted inEditors' Highlights
Polarization Measurements Probe the Physics of Lightning
A new measurement capability can detect the polarization of the radio frequency wave of lightning sources, which reveals different forms of lightning breakdown processes.
Posted inEditors' Highlights
Diurnal Variation of Rainfall over the Equator Revisited
Radar data show an afternoon precipitation maximum in the equatorial Indian Ocean in addition to the nocturnal maximum; this occurs under light surface winds and suppressed large-scale convection.
Posted inEditors' Highlights
New Lidar Comparisons of Temperatures Near the Mesopause
For the first time, simultaneous measurements of upper atmosphere temperatures over altitudes 80 to 110 kilometers have been made by two complementary lidar techniques.
Posted inScience Updates
New Achievements in Coastal Altimetry
11th Coastal Altimetry Workshop; Frascati, Italy, 12–15 June 2018
Posted inNews
Illegal Seafood Supply Chains Can Now Be Tracked by Satellite
Researchers pinpoint more than 10,000 likely transfers of catches between fishing vessels and cargo ships at sea. Knowing where these transfers occur can help officials crack down on illegal activity.