Geophysical Research Letters Archives - Page 17 of 60

Observation of Shear Wave Anisotropy in the Earth’s Inner Core

by Daoyuan Sun 5 January 20228 July 2024

Coda-correlation wavefields reveal direction-dependent inner-core shear-wave speed, ~5 s faster in directions oblique to the Earth’s rotation axis than directions parallel to the equatorial plane.

Four plots showing overshooting top density within six times of the radius of maximum wind as a function of normalized radius for different typhoons going through rapid intensification by day and night separated in groups based on typhoon intensity.

Editors' Highlights

Clouds Overshooting Tops and Typhoon Intensity

by Suzana Camargo 17 December 202113 April 2022

An examination of the relationship between the diurnal variation of cloud overshooting tops density and typhoon intensity in 45 typhoons, using the Himawari-8 Satellite.

Map showing 36-hour track forecast for Typhoon Maria and chart showing track errors for different experiments.

Editors' Highlights

Impact of Geostationary Sounder on Typhoon Forecasts

by Suzana Camargo 24 November 202126 April 2022

An analysis of the impact of targeted observations from the Geostationary Interferometric Infrared Sounder at high-temporal resolution on forecasts for Typhoon Maria in 2018.

The meeting point of the Pacific Ocean and the Tasman Sea

Research Spotlights

Current History: Exploring the Past of the Tasman Leakage

by Elizabeth Thompson 17 November 20211 February 2022

A new study sheds light on an important Pacific-to-Atlantic connecting current, including the global changes that led to its flowing that ushered in near-modern ocean circulation.

Plot showing spectrum of emission temperature with varying surface temperature.

Editors' Highlights

Simpson’s Law Role and Water Vapor Feedbacks

by Suzana Camargo 9 November 202119 October 2022

The choice of a fixed relative humidity leads to a simpler picture of climate feedbacks than fixing absolute humidity.

An image of Germany’s highest peak, Zugspitze.

Research Spotlights

Seismology: A Promising Tool for Monitoring Permafrost

by Terri Cook 4 November 20215 August 2024

Passive seismic data from a station atop Germany’s highest peak reveal a 15-year record of permafrost degradation, suggesting that this technique could be used for long-term environmental monitoring.

Two plots showing that Delhi may experience two fewer days of pollution-favorable weather pattern and seven more days of clean-favorable weather pattern in 2070–2099.

Editors' Highlights

Reduced Winter PM2.5 in Northern India Under Global Warming

by Bin Zhao 29 October 202119 October 2022

Global warming is projected to alleviate PM2.5 pollution in Delhi by decreasing pollution-favorable weather days and increasing clean-favorable weather days.

Two world maps showing global sea-level rates computed from satellite data.

Editors' Highlights

ICESat-2 Adds Estimates of Sea Level Trends to Accomplishments

by Kathleen A. Donohue 27 October 202119 October 2022

The high spatial resolution and high orbit of ICESat-2 make it suited for measuring sea level close to the coast and in the polar regions, filling a gap in our sea level observational system.