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CLOUD discovers new way by which aerosols rapidly form and grow at high altitude（图）
CLOUD 气溶胶 高海拔地区 快速形成
2023/5/26
Aerosol particles can form and grow in Earth’s upper troposphere in an unexpected way, reports the CLOUD collaboration in a paper1 published today in Nature.
Wildfires may have larger effects on cloud formation and climate change than thought（图）
Wildfires effects cloud formation climate change thought
2021/3/19
As the frequency and size of wildfires continue to increase worldwide, new research by Carnegie Mellon University scientists shows that the chemical aging of the particles emitted by these f...
Scientists demonstrate that cloud seeding can generate snowfall（图）
Scientists cloud seeding snowfall
2020/2/28
Scientists have successfully used a combination of radars and snow gauges to measure the impact of cloud seeding on snowfall. The new research addresses decades of speculation about the effectiveness ...
Mega-cloud from Canadian wildfires will help model impacts of nuclear war（图）
Mega-cloud Canadian wildfires model impacts nuclear war
2019/10/21
Extreme wildfires in British Columbia, Canada, pumped so much smoke into the upper atmosphere in August 2017 that an enormous cloud circled most of the Northern Hemisphere – a finding reported in the ...
Cloud Seeding For Snow：Does It Work?Scientists Report First Quantifiable Observations（图）
Cloud Seeding For Snow Scientists Report First Quantifiable Observations
2018/2/1
For the first time, scientists have obtained direct, quantifiable observations of cloud seeding for increased snowfall -- from the growth of ice crystals, through the processes that occur in clouds, t...
Atmospheric scientists wrap up winter cloud-seeding project in southwestern Idaho
Atmospheric scientists wrap up winter cloud-seeding project southwestern Idaho
2017/4/27
Can cloud seeding -- dispersing particles into the air with the aim of increasing precipitation -- increase snowfall?This winter, a team of researchers funded by the National Science Foundation (NSF) ...
Atmospheric scientists take to the skies to test cloud seeding for snow
Atmospheric scientists the skies test cloud seeding snow
2017/2/16
Can cloud seeding -- dispersing particles into the air with the aim of increasing precipitation -- increase snowfall? This week, a team of researchers began a cloud-seeding project in southwestern Ida...
《Atmospheric Science - An Introductory Survey: Chapter 6 Cloud Microphysics》
Atmospheric Science An Introductory Survey: Chapter 6 Cloud Microphysics
2014/8/27
Raindrops and snowflakes are among the smallest meteorological en-tities observable without special equipment. Yet from the perspec-tive of cloud microphysics, the particles commonly encountered in
p...
Researchers show emissions from forests influence very first stage of cloud formation
emissions from forests influence first stage cloud formation
2014/6/12
PITTSBURGH—Clouds play a critical role in Earth's climate. Clouds also are the largest source of uncertainty in present climate models, according to the latest report of the Intergovernmental Panel on...
The University of Queensland scientists warn world's cloud forests are at risk of destruction
climate change habitat destruction
2014/7/17
Many of the world's most rare and rich forests, the tropical montane cloud forests, could be all-but obliterated by 2080.
Response of Cloud Condensation Nuclei (> 50 nm) to changes in ion-nucleation
Response Cloud Condensation Nuclei changes ion-nucleation
2012/2/28
In experiments where ultraviolet light produces aerosols from trace amounts of ozone, sulphur dioxide, and water vapour, the number of additional small particles produced by ionization by gamma source...
A global survey of aerosol-liquid water cloud overlap based on four years of CALIPSO-CALIOP data
aerosol-liquid water cloud CALIPSO-CALIOP data
2011/2/25
Simulating the radiative impacts of aerosols located above liquid water clouds presents a significant challenge. In particular, absorbing aerosols, such as smoke, may have significant impact in such s...
Influence of convection and aerosol pollution on ice cloud particle effective radius
convection and aerosol pollution ice cloud particle radius
2011/1/20
Satellite observations show that ice cloud effective radius (re) increases with ice water content (IWC) but decreases with aerosol optical thickness (AOT). Using least-squares fitting to the observed ...
Global analysis of cloud field coverage and radiative properties, using morphological methods and MODIS observations
cloud field coverage radiative properties morphological methods MODIS observations
2011/1/19
The recently recognized continuous transition zone between detectable clouds and cloud-free atmosphere ("the twilight zone") is affected by undetectable clouds and humidified aerosol. In this study, w...
On average, airborne aerosol particles cool the Earth's surface directly by absorbing and scattering sunlight and indirectly by influencing cloud reflectivity, life time, thickness or extent. Here we ...