搜索结果: 1-15 共查到“大气物理学 CLOUD”相关记录120条 . 查询时间(0.093 秒)
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) ...
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...
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...
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...
Cloud thermodynamic phase inferred from merged POLDER and MODIS data
Cloud thermodynamic phase merged POLDER and MODIS data
2010/12/28
The global spatial and diurnal distribution of cloud properties is a key issue for understanding the hydrological cycle, and critical for advancing efforts to improve numerical weather models and gene...
Aerosol-cloud interaction determined by both in situ and satellite data over a northern high-latitude site
Aerosol-cloud interaction in situ and satellite data a northern high-latitude site
2010/11/30
The first aerosol indirect effect over a clean, northern high-latitude site was investigated by determining the aerosol cloud interaction (ACI) using three different approaches; ground-based in situ m...
Cosmic rays linked to rapid mid-latitude cloud changes
Cosmic rays rapid mid-latitude cloud changes
2010/11/30
The effect of the Galactic Cosmic Ray (GCR) flux on Earth's climate is highly uncertain. Using a novel sampling approach based around observing periods of significant cloud changes, a statistically ro...
Evaluation of stratocumulus cloud prediction in the Met Office forecast model during VOCALS-REx
stratocumulus cloud prediction the Met Office forecast model VOCALS-REx
2010/11/30
Observations in the subtropical southeast Pacific obtained during the VOCALS-REx field experiment are used to evaluate the representation of stratocumulus cloud in the Met Office forecast model and to...
Aerosol effects on ice clouds: can the traditional concept of aerosol indirect effects be applied to aerosol-cloud interactions in cirrus clouds?
Aerosol effects ice clouds aerosol indirect effects aerosol-cloud interactions cirrus clouds
2010/11/29
Cirrus clouds cover approximately 20–25% of the globe and thus play an important role in the Earth's radiation budget. Therefore the effect of aerosols on cirrus clouds can have a substantial impact o...
Novel method of generation of Ca(HCO3)2 and CaCO3 aerosols and first determination of hygroscopic and cloud condensation nuclei activation properties
Ca(HCO3)2 and CaCO3 aerosols hygroscopic and cloud condensation nuclei activation properties
2010/9/21
Atmospheric mineral aerosols contain CaCO3 as a reactive component. A novel method to produce CaCO3 aerosol was developed by spraying Ca(HCO3)2 solution, which was generated from a CaCO3 suspension an...
Intercomparison of aerosol-cloud-precipitation interactions in stratiform orographic mixed-phase clouds
aerosol-cloud-precipitation stratiform orographic mixed-phase clouds
2010/9/14
This study presents results from a model intercomparison of 2-D simulations of aerosol-cloud-precipitation interactions in stratiform orographic mixed-phase clouds. The sensitivity of orographic preci...
Two-moment bulk stratiform cloud microphysics in the GFDL AM3 GCM: description, evaluation, and sensitivity tests
Two-moment bulk stratiform cloud microphysics the GFDL AM3 GCM sensitivity tests
2010/9/14
A new stratiform cloud scheme including a two-moment bulk microphysics module, a cloud cover parameterization allowing ice supersaturation, and an ice nucleation parameterization has been implemented ...
Updraft and downdraft characterization with Doppler lidar: cloud-free versus cumuli-topped mixed layer
Doppler lidar cloud-free versus cumuli-topped mixed layer
2010/8/25
For the first time, a comprehensive, height-resolved Doppler lidar study of updrafts and downdrafts in the mixing layer is presented. The Doppler lidar measurements were performed at Leipzig, Germany,...
Black carbon semi-direct effects on cloud cover: review and synthesis
Black carbon semi-direct effects cloud cover
2010/8/25
Absorbing aerosols (AAs) such as black carbon (BC) or dust absorb incoming solar radiation, perturb the temperature structure of the atmosphere, and influence cloud cover. Previous studies have descri...