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Geophysical Research Letters

Figure 2 from the paper, showing a time series graph of amateur radio observations over the Continental United States and four maps showing data at selected universal times.
Posted inEditors' Highlights

Amateur Radio Observations Help Monitor Space Weather

by Gang Lu 17 May 202217 May 2022

Amateur radio observations provide a new method for studying large-scale ionospheric disturbances and HF communication impacts, and are important applications in ionospheric space weather monitoring.

Red-filter image of the Hunga Tonga–Hunga Ha‘apai eruption on 15 January 2022
Posted inResearch Spotlights

Modeling Atmospheric Waves from Hunga Tonga–Hunga Ha‘apai

by Aaron Sidder 12 May 202212 May 2022

A shallow-water oceanic model showed agreement with satellite observations of atmospheric waves produced by the eruption of the underwater volcano.

The explosive eruption of Hunga Tonga–Hunga Ha’apai in the South Pacific
Posted inResearch Spotlights

Tonga Eruption Made Waves in Earth’s Ionosphere

by Jack Lee 21 April 202221 April 2022

The blast from Hunga Tonga–Hunga Ha’apai produced far-reaching ionospheric disturbances, including one with an initial speed up to 950 meters per second.

Lightning over water
Posted inResearch Spotlights

Lightning Had Difficulty Forming in Early Earth’s Atmosphere

by Rebecca Dzombak 8 April 202225 April 2022

Lightning could have sparked the beginnings of life, but the primordial atmosphere might have made it more difficult for lightning to initiate.

Plot showing results of using the new fingerprint analysis for global land mean near-surface air temperature for 6 CMIP6 models and the multi-model mean.
Posted inEditors' Highlights

Framework for Fingerprinting Human Influence on Climate

by Suzana Camargo 15 March 202215 March 2022

An optimal approach for detection and attribution studies using the CMIP6 Detection and Attribution Model Intercomparison Project (DAMIP).

An image of a nodal seismometer
Posted inResearch Spotlights

Potential of Leaking Modes to Reveal Underground Structure

by JoAnna Wendel 7 March 20227 March 2022

Instead of waiting for earthquake waves to tell scientists about the structure of Earth’s interior, scientists can now use ambient noise from humans to “see” underground.

A DAS array captures a series of earthquakes and aftershocks that shook the Ridgecrest area in Southern California in 2019.
Posted inResearch Spotlights

Fiber-Optic Cables Can Produce High-Resolution Underground Maps

by Jack Lee 15 February 202216 February 2022

Telecom fiber repurposed as distributed acoustic sensing arrays can image near-surface structure and potentially improve seismic hazard mapping in urban areas.

Three panels showing the difference between experiments that include Aeolus winds assimilation and those that do not.
Posted inEditors' Highlights

Impact of Assimilating Aeolus Winds on Kelvin Waves

by Suzana Camargo 11 February 202215 March 2022

Assimilation of Aeolus winds in the ECMWF analyses and forecasts improves the Kelvin Waves representation and forecasts in the tropical tropopause layer.

Two charts comparing saturated hydraulic conductivity as function of clay content for temperate and tropical environments.
Posted inEditors' Highlights

Not All Clays are Made Equal – and it Matters for Hydrology

by Valeriy Ivanov 10 February 202215 March 2022

Soil clay content is an important characteristic that affects many hydraulic and mechanical properties of soil; clay mineral type is important for their prediction.

Figure 4 from the paper
Posted inEditors' Highlights

El Niño-Southern Oscillation and Radiation Two-Way Coupling

by Suzana Camargo 9 February 202215 March 2022

Changes in sea surface temperature during ENSO events and radiation are related, suggesting a two-way coupling between sea surface temperature and radiation in coupled climate variability.

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