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Simulation of trace gas redistribution by convective clouds - Liquid phase processes
Simulation of trace gas convective clouds - Liquid phase processes
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2009/3/12
A two-dimensional dynamic cloud model with detailed microphysics and a spectral treatment of gas scavenging was used to simulate trace gas vertical redistribution in precipitating continental and mar...
Redistribution of trace gases by convective clouds - mixed-phase processes
trace gases convective clouds mixed-phase processes
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2009/3/12
The efficiency of gas transport to the free and upper troposphere in convective clouds is investigated in an axisymmetric dynamic cloud model with detailed microphysics. In particular, we examine the ...
Properties of subvisible cirrus clouds formed by homogeneous freezing
subvisible cirrus clouds homogeneous freezing
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2009/3/12
Number concentrations and mean sizes of ice crystals and derived microphysical and optical properties of subvisible cirrus clouds (SVCs) formed by homogeneous freezing of supercooled aerosols are inve...
NAT-rock formation by mother clouds: a microphysical model study
NAT-rock formation mother clouds microphysical model
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2009/3/12
Polar stratospheric clouds (PSCs) of type 1a or 1a-enh containing high number densities of nitric acid trihydrate (NAT) particles, can act as mother clouds for extremely large NAT particles, termed NA...
First observations of noctilucent clouds by lidar at Svalbard，78°N
noctilucent clouds lidar Svalbard
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2009/3/11
In summer 2001 a potassium lidar was installed near Longyearbyen (78° N) on the north polar island of Spitsbergen which is part of the archipelago Svalbard. At the same place a series of meteorologica...
Ultrathin Tropical Tropopause Clouds（UTTCs）：II. Stabilization mechanisms
Ultrathin Tropical Tropopause Clouds UTTCs Stabilization mechanisms
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2009/3/11
Mechanisms by which subvisible cirrus clouds (SVCs) might contribute to dehydration close to the tropical tropopause are not well understood. Recently Ultrathin Tropical Tropopause Clouds (UTTCs) with...
Ultrathin Tropical Tropopause Clouds（UTTCs）：I. Cloud morphology and occurrence
Ultrathin Tropical Tropopause Clouds UTTCs Cloud morphology
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2009/3/11
Subvisible cirrus clouds (SVCs) may contribute to dehydration close to the tropical tropopause. The higher and colder SVCs and the larger their ice crystals, the more likely they represent the last ef...
Ice condensation on sulfuric acid tetrahydrate: Implications for polar stratospheric ice clouds
Ice condensation sulfuric acid tetrahydrate polar stratospheric ice clouds
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2009/3/11
The mechanism of ice nucleation to form Type 2 PSCs is important for controlling the ice particle size and hence the possible dehydration in the polar winter stratosphere. This paper probes heterogene...
A condensed-mass advection based model for the simulation of liquid polar stratospheric clouds
condensed-mass advection based model liquid polar stratospheric clouds
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2009/3/10
We present a condensed-mass advection based model (MADVEC) designed to simulate the condensation/evaporation of liquid polar stratospheric cloud (PSC) particles. A (Eulerian-in-radius) discretization ...
Noctilucent clouds and the mesospheric water vapour: the past decade
Noctilucent clouds mesospheric water vapour
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2009/3/10
The topic of this paper is the sensitivity of the brightness of noctilucent clouds (NLC) on the ambient water vapour mixing ratio f(H2O). Firstly, we use state-of-the-art models of NLC layer formation...
The influence of organic compounds on the development of precipitation acidity in maritime clouds
organic compounds precipitation acidity maritime clouds
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2009/3/2
In order to estimate the anthropogenic influence of gas and aerosol emissions from the Petroleum Industry in maritime zones with clouds of small vertical extent, a numerical 1-D Eulerian cloud-chemica...
On the distribution of relative humidity in cirrus clouds
relative humidity cirrus clouds
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2009/2/25
We have analysed relative humidity statistics from measurements in cirrus clouds taken unintentionally during the Measurement of OZone by Airbus In-service airCraft project (MOZAIC). The shapes of the...
The vertical distribution of aerosols, Saharan dust and cirrus clouds in Rome (Italy) in the year 2001
aerosols Saharan dust cirrus clouds Rome
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2009/2/23
A set of 813 lidar profiles of tropospheric aerosol and cirrus clouds extinction and depolarization observed in Rome, Italy, between February 2001 and February 2002 is analyzed and discussed. The year...
The role of transition metal ions on HOx radicals in clouds: a numerical evaluation of its impact on multiphase chemistry
transition metal ions HOx radicals clouds multiphase chemistry
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2009/2/20
A new modelling study of the role of transition metal ions on cloud chemistry has been performed. Developments of the Model of Multiphase Cloud Chemistry (M2C2; Leriche et al., 2001) are described, in...
SEMANTIC FEATURE BASED REGISTRATION OF TERRESTRIAL POINT CLOUDS
Registration Terrestrial laser scanning Feature extraction
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2016/2/29
As an active remote sensing technique, Terrestrial Laser Scanning (TLS) is popular for constructing detailed 3D models of complex
objects. To create a complete 3D scene, TLS point clouds scanned fro...