搜索结果: 1-14 共查到“理学 cirrus cloud”相关记录14条 . 查询时间(0.069 秒)
A flexible three-dimensional stratocumulus, cumulus and cirrus cloud generator (3DCLOUD) based on drastically simplified atmospheric equations and the Fourier transform framework
A flexible three-dimensional stratocumulus cumulus cirrus cloud generator drastically simplified atmospheric equations Fourier transform framework
2014/12/19
The 3DCLOUD algorithm for generating stochastic three-dimensional (3-D) cloud fields is described in this paper. The generated outputs are 3-D optical depth (τ) for stratocumulus and cumulus fields an...
GEWEX Cloud System Study (GCSS) cirrus cloud working group: development of an observation-based case study for model evaluation
GEWEX Cloud System Study cirrus cloud working group observation-based case study model evaluation
2014/12/10
The GCSS working group on cirrus focuses on an inter-comparison of model simulations ranging from very detailed microphysical and dynamical models through to general circulation models (GCMs). The pas...
Cirrus clouds in a global climate model with a statistical cirrus cloud scheme
Cirrus clouds a global climate model a statistical cirrus cloud scheme
2010/8/13
A statistical cirrus cloud scheme that accounts for mesoscale temperature perturbations is implemented in a coupled aerosol and atmospheric circulation model to better represent both subgrid-scale sup...
UV Raman lidar measurements of relative humidity for the characterization of cirrus cloud microphysical properties
UV Raman lidar measurements relative humidity cirrus cloud microphysical properties
2009/12/3
Raman lidar measurements performed in Potenza by the Raman lidar system BASIL in the presence of cirrus clouds are discussed. Measurements were performed on 6 September 2004 in the frame of the Italia...
Ice supersaturations and cirrus cloud crystal numbers
Ice supersaturations cirrus cloud crystal numbers
2009/6/16
Upper tropospheric observations outside and inside of cirrus clouds indicate water vapour mixing ratios sometimes exceeding water saturation. Relative humidities over ice (RHice) of up to and more tha...
Parameterizing the competition between homogeneous and heterogeneous freezing in cirrus cloud formation – monodisperse ice nuclei
homogeneous and heterogeneous freezing cirrus cloud formation monodisperse ice nuclei
2009/3/12
We present a parameterization of cirrus cloud formation that computes the ice crystal number and size distribution under the presence of homogeneous and heterogeneous freezing. The parameterization is...
Cirrus cloud occurrence as function of ambient relative humidity: a comparison of observations obtained during the INCA experiment
Cirrus cloud occurrence ambient relative humidity INCA experiment
2009/3/11
Based on in-situ observations performed during the Interhemispheric differences in cirrus properties from anthropogenic emissions (INCA) experiment, we introduce and discuss the cloud presence fractio...
Freezing thresholds and cirrus cloud formation mechanisms inferred from in situ measurements of relative humidity
Freezing thresholds cirrus cloud formation mechanisms humidity
2009/3/11
Factors controlling the microphysical link between distributions of relative humidity above ice saturation in the upper troposphere and lowermost stratosphere and cirrus clouds are examined with the h...
This work examines changes in cirrus cloud cover (CCC) in possible association with aviation activities at congested air corridors. The analysis is based on the latest version of the International Sat...
The roles of dynamical variability and aerosols in cirrus cloud formation
dynamical variability aerosols cirrus cloud formation
2009/3/11
The probability of occurrence of ice crystal number densities in young cirrus clouds is examined based on airborne measurements. The observations have been carried out at midlatitudes in both hemisphe...
The potential of polarization measurements from space at mm and sub-mm wavelengths for determining cirrus cloud parameters
polarization measurements mm and sub-mm wavelengths cirrus cloud parameters
2009/3/10
The millimeter and sub-millimeter waves have been attracting a lot of attention recently in the cloud remote sensing community. This is largely because of their potential use in measuring cirrus cloud...
Is there a trend in cirrus cloud cover due to aircraft traffic?
Is there a trend in cirrus cloud cover due to aircraft traffic?
2009/2/16
Trends in cirrus cloud cover have been estimated based on 16 years of data from ISCCP (International Satellite Cloud Climatology Project). The results have been spatially correlated with aircraft dens...
Insights into the role of soot aerosols in cirrus cloud formation
soot aerosols cirrus cloud formation
2008/12/17
Cirrus cloud formation is believed to be dominated by homogeneous freezing of supercooled liquid aerosols in many instances. Heterogeneous ice nuclei such as mineral dust, metallic, and soot particles...
A study on natural and manmade global interannual fluctuations of cirrus cloud cover for the period 1984–2004
global interannual fluctuation cirrus cloud cover
2008/12/10
The seasonal variability and the interannual variance explained by ENSO and NAO to cirrus cloud cover (CCC) are examined during the twenty-year period 1984–2004. CCC was found to be significantly cor...