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How Ice In Clouds Is Born（图）
Ice Clouds Born
2017/11/24
Something almost magical happens when you put a tray full of sloshing, liquid water into a freezer and it comes out later as a rigid, solid crystal of ice. Chemists at the University of Utah have pull...
The ice nucleation ability of one of the most abundant types of fungal spores found in the atmosphere
the most abundant types fungal spores the atmosphere
2011/2/25
Recent atmospheric measurements show that biological particles are a potentially important class of ice nuclei. Types of biological particles that may be good ice nuclei include bacteria, pollen and f...
Results from the University of Toronto continuous flow diffusion chamber at ICIS 2007: instrument intercomparison and ice onsets for different aerosol types
the University of Toronto flow diffusion chamber ICIS 2007 ice onsets different aerosol types
2011/1/18
The University of Toronto continuous flow diffusion chamber (UT-CFDC) was used to study heterogeneous ice nucleation at the International Workshop on Comparing Ice Nucleation Measuring Systems (ICIS 2...
Irreversible loss of ice nucleation active sites in mineral dust particles caused by sulphuric acid condensation
ice nucleation active sites mineral dust particles sulphuric acid condensation
2010/12/20
During the FROST-2 (FReezing Of duST) measurement campaign conducted at the Leipzig Aerosol Cloud Interaction Simulator (LACIS), we investigated changes in the ice nucleation properties of 300 nm Ariz...
Chemical composition of ambient aerosol, ice residues and cloud droplet residues in mixed-phase clouds: single particle analysis during the Cloud and Aerosol Characterization Experiment (CLACE 6)
ambient aerosol ice residues cloud droplet residues the Cloud and Aerosol Characterization Experiment
2010/9/14
The mass spectra were binned in classes, based on the combination of dominating substances, such as mineral dust, sulfate, potassium and elemental carbon or organic material. The derived chemical info...
High variability of the heterogeneous ice nucleation potential of oxalic acid dihydrate and sodium oxalate
the heterogeneous ice nucleation oxalic acid dihydrate sodium oxalate
2010/8/25
The heterogeneous ice nucleation potential of airborne oxalic acid dihydrate and sodium oxalate particles in the deposition and condensation mode has been investigated by controlled expansion cooling ...
Probabilistic description of ice-supersaturated layers in low resolution profiles of relative humidity
ice-supersaturated layers low resolution profiles relative humidity
2010/8/16
This paper uses radiosonde launches made by the UK Meteorological Office, from the British Isles, Gibraltar, St. Helena and the Falkland Islands between January 2002 and December 2006, to investigate ...
Modelling the reversible uptake of chemical species in the gas phase by ice particles formed in a convective cloud
chemical species the gas phase ice particles a convective cloud
2010/8/13
The present paper is a preliminary study preparing the introduction of reversible trace gas uptake by ice particles into a 3-D cloud resolving model. For this a 3-D simulation of a tropical deep conve...
Black carbon aerosols and the third polar ice cap
Black carbon aerosols the third polar ice cap
2010/8/13
Recent thinning of glaciers over the Himalayas (sometimes referred to as the third polar region) have raised concern on future water supplies since these glaciers supply water to large river systems t...
Depositional ice nucleation on solid ammonium sulfate and glutaric acid particles
Depositional ice nucleation solid ammonium sulfate glutaric acid particles
2010/3/16
Heterogeneous ice nucleation on solid ammonium sulfate and glutaric acid particles was studied using optical microscopy and Raman spectroscopy. Optical microscopy was used to detect selective nucleati...
An aerosol chamber investigation of the heterogeneous ice nucleating potential of refractory nanoparticles
aerosol chamber heterogeneous ice nucleating potential refractory nanoparticles
2010/2/21
All samples were observed to initiate ice formation via the deposition mode at threshold ice super-saturations (RHithresh) ranging from 105% to 140% for temperatures below 220 K. Approximately 10% of ...
Numerical simulations of contrail-to-cirrus transition – Part 2: Impact of initial ice crystal number, radiation, stratification, secondary nucleation and layer depth
contrail-to-cirrus transition initial ice crystal number secondary nucleation layer depth
2010/2/21
Simulations of contrail-to-cirrus transition were performed with an LES model. In Part 1 the impact of relative humidity, temperature and vertical wind shear was explored in a detailed parametric stud...
Ice nucleation and cloud microphysical properties in tropical tropopause layer cirrus
Ice nucleation cloud microphysical properties tropical tropopause layer cirrus
2010/2/21
In past modeling studies, it has generally been assumed that the predominant mechanism for nucleation of ice in the uppermost troposphere is homogeneous freezing of aqueous aerosols. However, recent i...
The effect of Arctic sea-ice extent on the absorbed（net）solar flux at the surface, based on ISCCP-D2 cloud data for 1983–2007
Arctic sea-ice absorbed solar flux ISCCP-D2 cloud data
2010/2/1
We estimate the effect of the Arctic sea ice on the absorbed (net) solar flux using a radiative transfer model. Ice and cloud input data to the model come from satellite observations, processed by the...
Trend in ice moistening the stratosphere – constraints from isotope data of water and methane
ice moistening isotope data water methane
2010/1/18
Water plays a major role in the chemistry and radiative budget of the stratosphere. Air enters the stratosphere predominantly in the tropics, where the very low temperatures around the tropopause cons...