You are browsing the archive for atmosphere Archives - GeoSpace.
21 April 2020
South Asia faces increased double-threat of extreme heat, extreme pollution
Extreme heat occurrences worldwide have increased in recent decades, and at the same time, many cities are facing severe air pollution problems, featuring episodes of high particulate matter pollution. This study provides an integrated assessment of human exposure to rare days of both extreme heat and high PM levels.
31 March 2020
Flooding Stunted 2019 Cropland Growing Season, Resulting in More Atmospheric CO2
A new study determines the impact of the severe 2019 floods, and offers scientists a new tool for measuring regional-scale carbon dioxide absorption by plants.
17 September 2019
Scientists identify weather event behind extreme cold in Europe and Asia during February 2018
In the new study, researchers tested their hypothesis that a chain of events in the troposphere caused the sudden stratospheric warming and subsequent splitting of the polar vortex.
26 August 2019
Ship emissions responsible for thousands of premature deaths in China’s Pearl River Delta
Ship emissions caused more than 1,200 ozone-related and 2,500 particulate-related premature deaths in the Pearl River Delta region in 2015, according to new research in the AGU journal GeoHealth. The new study also predicts that implementing new coastal emission controls could reduce mortality due to fine particulates by 30 percent and ozone by 10 percent by 2030.
Climate change is altering winter precipitation across the Northern Hemisphere
A team of scientists has successfully teased out the influence of human-caused climate change on wintertime precipitation over much of the last century, showing that the warming climate is significantly altering wintertime rainfall and snowfall across the Northern Hemisphere.
6 August 2019
How the Pacific Ocean influences long-term drought in the Southwestern U.S.
New research explores what conditions in the ocean and in the atmosphere prolong droughts in the Southwestern U.S. The answer is complex, according to a study published Aug. 6 in the Journal of Geophysical Research: Atmospheres, a journal of the American Geophysical Union.
5 August 2019
Geoengineering versus a volcano
Major volcanic eruptions spew ash particles into the atmosphere, which reflect some of the Sun’s radiation back into space and cool the planet. But could this effect be intentionally recreated to fight climate change? A new paper in the AGU journal Geophysical Research Letters investigates.
24 June 2019
Atmospheric rivers getting warmer along U.S. West Coast
Most of the West Coast of the United States relies on a healthy winter snowpack to provide water through the dry summer months. But when precipitation falls as rain rather than snow, it can diminish summer water supplies, as well as trigger floods and landslides. A new study in AGU’s Journal of Geophysical Research: Atmospheres finds atmospheric rivers –plumes of moisture that deliver much of the west’s precipitation—have gotten warmer over the past 36 years.
15 May 2019
Study: U.S. methane emissions flat since 2006 despite increased oil and gas activity
Natural gas production in the United States has increased 46 percent since 2006, but there has been no significant increase of total US methane emissions and only a modest increase from oil and gas activity, according to a new NOAA study.
8 May 2019
A new view of wintertime air pollution
The processes that create ozone pollution in the summer can also trigger the formation of wintertime air pollution, according to a new study led by CIRES and NOAA researchers. The team’s unexpected finding suggests that in the U.S. West and elsewhere, certain efforts to reduce harmful wintertime air pollution could backfire.
GeoSpace is a blog on Earth and space science, managed by AGU’s Public Information staff. The blog features posts by AGU writers and guest contributors on all sorts of relevant science topics, but with a focus on new research and geo and space sciences-related stories that are currently in the news.