AGU Advances

A cross-disciplinary, gold open-access journal publishing full length, high-impact research articles across all of the Earth and space sciences. Submit your research.

Volume 3 Issue 2 | May 2022

FROM THE EDITOR IN CHIEF

With the rapid expansion of current earth observations, an increasing share of scientific publications use open data that are beyond the resources of the authors themselves to collect. This issue of AGU Advances is no exception, with most papers synthesizing observations made using different platforms or networks for different purposes: to detect a reduction in ozone during the pandemic (Chang et al.), to study processes related to ice formation in clouds (Atlas et al., Zhu et al.), or to derive characteristics of very low frequency earthquakes (Fan et al.). Of course, original geochemical analyses on rare samples like the ancient zircons reported by Drabon et al. remain fundamental for exploring earth history before the satellite age. However, for the ever-expanding earth observations in the Anthropocene, the challenge is not only to secure the repositories and people who provide, check and curate data, but to find ways to recognize their essential contributions to science. —Susan Trumbore, Editor in Chief

EDITORIAL

Thank You to Our 2021 Peer Reviewers

The editorial board of AGU Advances thanks the individuals who reviewed for the journal in 2021. Trumbore et al.

RESEARCH ARTICLES

Air Pollution Was Reduced During the COVID-19 Pandemic

A decrease in emissions of ozone precursor gases during the COVID-19 economic downturn likely explains the unusual reduction in ozone concentrations observed during the spring and summer of 2020. Chang et al.

Ice Begets Ice in the Clouds of the Southern Ocean

Poorly understood ice multiplication processes, not aerosols, may determine the microphysical properties of climatologically important clouds over the Southern Ocean. Atlas et al.; Viewpoint by Hoose

Continent-Scale Detection of Triggered Low Frequency Earthquakes

Very low frequency events in the gap zone of Cascadia illustrate how stress evolves on megathrusts, advancing our understanding of rupture dynamics. Fan et al.

Less Air Travel May Partially Contribute to Global Warming

Decrease in aircraft soot emission, as shown by COVID-19 lockdown, leads to a significant increase in ice crystal number in cirrus clouds, and results in a small global positive radiative effect. Zhu et al.

Zircons and Plate Tectonics

New data on ancient zircons points to a transition from stagnant lid to subduction style tectonics at 3.6 Ga ago. Drabon et al.

Community Science

Carson et al. (2022) "outline a strategy developed collaboratively by community engagement personnel from the four recently established U.S. Centers for Oceans and Human Health. [It] supports researchers in defining approaches to community engagement, and in coordinating partners, purpose, activities, and approaches intentionally in their work with communities." — Community Science

Paleoclimatology with Tree Rings

Volcanoes, heat waves, and tree rings – getting the seasonal story straight – new work from Edwards et al. (2022) finds that volcanic fog lowered summer tree ring density in 1783 despite the heat. —Sarah Feakins, Paleoceanography and Paleoclimatology

Magnetic Minerals

Roberts et al. (2021) present the most comprehensive available magnetic domain state and anisotropy study for synthetic and natural hematite from first-order reversal curve diagrams. —Agnes Kontny, Journal for Geophysical Research: Solid Earth

FEATURED AGU BOOK

The Congo is the world's second largest river basin and home to 120 million people. Understanding the cycling of water, sediments, and nutrients is important as the region faces climatic and anthropogenic change. Featuring contributions from experts in the region and their international collaborators, Congo Basin Hydrology, Climate, and Biogeochemistry: A Foundation for the Future explores variations in and influences on rainfall, hydrology and hydraulics, and sediment and carbon dynamics. This book is available in English and in French.

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