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precipitation

An image of tea-colored water droplets hanging from a tree branch
Posted inNews

Dirty Trees Shape Earth’s Hydrologic and Carbon Cycles

by C. Hansen 16 December 20206 February 2023

Researchers peer into precipitation partitioning—the process by which plants and the organic matter coating them help shape the hydrologic cycle.

A cloudy mountain scene in southern France
Posted inResearch Spotlights

Regional Sensitivities Strongly Affect Modeled Climate Extremes

by David Shultz 22 September 202022 February 2023

Analysis of temperature and precipitation extremes in two generations of CMIP climate models revealed similarities in regional climate sensitivities, contrasting with divergent global sensitivities.

Photograph of a hailstone 2.5 inches in diameter
Posted inEditors' Vox

Ice from Above: Toward a Better Understanding of Hailstorms

by J. T. Allen, I. M. Giammanco, M. R. Kumjian, H. J. Punge, M. Kunz, Q. Zhang and P. Groenemeijer 11 September 202025 February 2022

Globally relevant and locally devastating, hailstorms produce significant societal impacts; despite this, our understanding of hailstorms and our ability to predict them is still limited.

World map showing the difference of a metric of extreme hot days between two periods
Posted inEditors' Highlights

A New Dataset of Temperature and Precipitation Extremes

by Minghua Zhang 8 September 202013 February 2023

HadEX3 is an updated dataset of gridded temperature and precipitation extremes, that covers the period of 1901 to 2018 and has improved spatio-temporal coverage.

Snout of a mountain glacier with terminal moraine
Posted inNews

Precipitation Plays a Key Role in Glacial Erosion

Javier Barbuzano, Science Writer by Javier Barbuzano 10 March 202024 February 2022

After comparing the climatic conditions at dozens of glaciers worldwide, researchers find that precipitation, not temperature, is the leading environmental factor driving glacial erosion.

Model of cloud development, charge evolution, and cloud-to-ground lightning initiation in Hokuriku winter clouds
Posted inEditors' Highlights

Microphysics and Positive Lightning in Hokuriku Winter Clouds

by Minghua Zhang 27 December 20199 March 2023

The microphysics of the frequent, and frequently positive, lightning of Hokuriku winter clouds was investigated by systematic, in situ observation of individual precipitation particle type and charge.

Satellite image showing a band of clouds stretching across the western Pacific Ocean to California
Posted inNews

Atmospheric Rivers Have Different “Flavors”

by A. Remmel 24 December 201930 January 2024

New research is helping scientists understand why moisture-laden atmospheric rivers of similar intensities have different effects on land.

Charts showing seasonal cycles of events caused by precipitation on snow
Posted inEditors' Highlights

Atmospheric Rivers Trigger Heavy Snowmelt in Western USA

by Valeriy Ivanov 13 December 201930 January 2024

A rare atmospheric phenomenon that transports large quantities of water vapor into the coastal watersheds of the western USA is responsible for up to 10–20% of intense snowmelt events in the region.

An illustration of rainfall estimates from ground-based radar and spaceborne Tropical Rainfall Measuring Mission (TRMM) radar
Posted inEditors' Highlights

Machine Learning Improves Satellite Rainfall Estimates

by Valeriy Ivanov 31 October 201925 July 2022

A new deep learning approach bridges ground rain gauge and radar data with spaceborne radar observations of Tropical Rainfall Measuring Mission to improve precipitation estimation.

Muscovite in polarized light
Posted inNews

Ancient Precipitation Reveals Clues About Mountains and Climate

Katherine Kornei, Science Writer by Katherine Kornei 17 September 20192 March 2023

By studying the chemical signatures of 300-million-year-old precipitation, researchers find evidence that the supercontinent Pangea contained peaks as tall as the European Alps.

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Features from AGU Publications

Research Spotlights

Forty Thousand Cubic Meters of Fresh Water Flow from the Congo into the Atlantic Every Second. A New Study Traces Where It Goes from There.

2 July 20262 July 2026
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Reconnecting to the Lunar Trailblazer with Light 

6 July 20266 July 2026
Editors' Vox

Small-Scale Indian Ocean Dynamics Underpin Marine Ecology and Climate

4 June 20263 June 2026
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