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rain

A river in southern Siberia flows between rocky banks toward mountains in the distance.
Posted inResearch Spotlights

High Mountain Rain Has Scientists Rethinking River Basics

by David Shultz 27 January 202227 January 2022

Rainfall varies with elevation, and such precipitation gradients can have profound and often counterintuitive effects on topography.

The Atacama Desert, Chile
Posted inResearch Spotlights

Understanding Rare Rain Events in the Driest Desert on Earth

by Emily Cerf 18 January 202218 January 2022

A new study reveals the atmospheric paths of storm events that can deliver a decade’s worth of rain in a few hours to the Atacama Desert.

A person carrying an umbrella walks through a rainstorm.
Posted inNews

Rainy Days Dampen Economic Growth

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 12 January 202213 January 2022

Research reveals the connection between a country’s day-to-day weather and its production.

Overhead image from rescue helicopter of damage in the path of a debris flow at the base of burned hills in Montecito, Calif.
Posted inNews

No Relief from Rain: Climate Change Fuels Compound Disasters

by Leah Campbell 17 December 202117 December 2021

Climate change is increasing the risk of fire-rain events, raising mudslide concerns in fire-prone communities.

Set of four maps showing condensed water path, frozen moist static energy anomaly, longwave heating anomaly, and shortwave heating anomaly from the 300 K sea surface temperature simulation at day 100.
Posted inEditors' Highlights

Importance of High Clouds and Moisture in Rainstorm Aggregation

by Jiwen Fan 21 October 202113 March 2023

A study of the impacts of radiative interactions with different cloud types on aggregation of rainstorms finds that interactions with high-clouds and water vapor are key.

Two maps of the tropical Pacific Ocean showing difference in precipitation between a control model and observations (top panel) and a model with elevated Central American orography (bottom panel).
Posted inEditors' Highlights

Raising Central American Orography Improves Climate Simulation

by Sarah Kang 9 June 20218 March 2022

Elevation of Central American orography significantly reduces the pervasive tropical rainfall bias by blocking the easterlies and consequently warming the northeastern tropical Pacific.

Pacific Ocean off the coast of Nuquí, Chocó, Colombia
Posted inNews

Climate Clues from One of the Rainiest Places on Earth

by Andrew J. Wight 7 June 20218 March 2022

One of the world’s rainiest places lies off Colombia’s Pacific coast. New field research sheds light on the Chocó low-level jet, a phenomenon responsible for the region’s precipitation.

Top figure shows tracking of mesoscale convective systems globally at hourly and 10-km resolution; bottom figure is a world map showing amount of rainfall that MCSs account for.
Posted inEditors' Highlights

New Global Mesoscale Convective System Tracking Database

by C. Zhang 6 May 20213 February 2022

A 20-year high-resolution global mesoscale convective system tracking database reveals the characteristics of mesoscale convective systems and their significant contributions to global rainfall.

People stand atop debris from a huge slump landslide in Uganda.
Posted inNews

Landslides Mar the “Pearl of Africa”

by H. Mafaranga 19 April 20212 August 2022

Behind Uganda’s lavish beauty, climate change has taken its toll: Death, destroyed properties, and displaced communities increase as above-normal rainfall floods the country.

Extreme rainfall is more likely to occur in the United States as temperatures rise.
Posted inResearch Spotlights

Extreme Rainfall Statistics May Shift as U.S. Climate Warms

Sarah Stanley, Science Writer by Sarah Stanley 12 April 202118 February 2022

Precipitation data and high-resolution modeling suggest that extreme rainfall events under a changing climate will be shorter, more intense, and more widely spread out.

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