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Radiosonde stratospheric temperatures at Dumont d'Urville (Antarctica): trends and link with polar stratospheric clouds
Radiosonde stratospheric temperatures Dumont d'Urville (Antarctica) polar stratospheric clouds
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2010/8/12
Temperature profiles measurements are performed daily (00:00 UT) in Dumont d'Urville (66°40' S, 140°01' E) by Météo-France, using standard radiosondes, since the International Geophysical Year in 1957...
Effect of hygroscopic seeding on warm rain clouds – numerical study using a hybrid cloud microphysical model
hygroscopic seeding warm rain clouds numerical study a hybrid cloud microphysical model
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2010/8/12
The effect of hygroscopic seeding on warm rain clouds was examined using a hybrid cloud microphysical model combining a Lagrangian Cloud Condensation Nuclei (CCN) activation model, a semi-Lagrangian d...
Lidar characterization of the Arctic atmosphere during ASTAR 2007: four cases studies of boundary layer, mixed-phase and multi-layer clouds
Lidar characterization the Arctic atmosphere ASTAR 2007 boundary layer mixed-phase multi-layer clouds
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2010/8/12
During the Arctic Study of Tropospheric Aerosol, Clouds and Radiation (ASTAR), which was conducted in Svalbard in March and April 2007, tropospheric Arctic clouds were observed with two ground-based b...
First climatology of polar mesospheric clouds from GOMOS/ENVISAT stellar occultation instrument
polar mesospheric clouds GOMOS/ENVISAT stellar occultation instrument climatology
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2010/8/12
GOMOS (Global Ozone Monitoring by Occultation of Stars), on board the European platform ENVISAT launched in 2002, is a stellar occultation instrument combining four spectrometers and two fast photomet...
The great Indian haze revisited: aerosol distribution effects on microphysical and optical properties of warm clouds over peninsular India
The great Indian haze aerosol distribution effects microphysical optical properties of warm clouds
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2010/9/10
The Indian subcontinent is undergoing a phase of rapid urbanisation. Inevitable fallout of this process is a concomitant increase in air pollution much of which can be attributed to the infamous grea...
The rotational excitation of HCN and HNC by He: New insights on the HCN/HNC abundance ratio in molecular clouds
Molecular data Molecular processes scattering
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2010/3/9
Modeling of molecular emission from interstellar clouds requires the calculation of rates for excitation by collisions with the most abundant species. The present paper focuses on the calculation of r...
Evidence of ice crystals at cloud top of Arctic boundary-layer mixed-phase clouds derived from airborne remote sensing
ice crystals Arctic boundary-layer mixed-phase clouds airborne remote sensing
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2009/12/31
The vertical distribution of ice crystals in Arctic boundary-layer mixed-phase (ABM) clouds was investigated by airborne remote-sensing and in situ measurements during the Arctic Study of Tropospheric...
Response of the Nevzorov hot wire probe in clouds dominated by droplet conditions in the drizzle size range
Nevzorov hot wire probe clouds droplet conditions drizzle size range
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2010/2/8
During the airborne research mission ASTAR 2004 (Arctic Study of Tropospheric Aerosols, Clouds and Radiation) performed over the island of Svalbard in the Arctic a constant-temperature hot-wire Nevzor...
Sensitivity studies of different aerosol indirect effects in mixed-phase clouds
different aerosol indirect effects mixed-phase clouds
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2009/12/3
Aerosols affect the climate system by changing cloud characteristics. Using the global climate model ECHAM5-HAM, we investigate different aerosol effects on mixed-phase clouds: The glaciation effect, ...
Effect of biomass burning on marine stratocumulus clouds off the California coast
biomass burning marine stratocumulus clouds California coast
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2009/12/3
Aerosol-cloud interactions are considered to be one of the most important and least known forcings in the climate system. Biomass burning aerosols are of special interest due to their radiative impact...
Clouds, photolysis and regional tropospheric ozone budgets
Clouds photolysis regional tropospheric ozone budgets
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2009/11/19
We use a three-dimensional chemical transport model to examine the shortwave radiative effects of clouds on the tropospheric ozone budget. In addition to looking at changes in global concentrations as...
Bounded cascade clouds:albedo and effective thickness
Bounded cascade clouds albedo effective thickness
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2009/11/16
If climate models produced clouds having liquid water amounts close to those observed, they would compute a mean albedo that is often much too large, due to the treatment of clouds as plane-parallel. ...
Use of immobile trace elements for the correlation of Telychian bentonites on Saaremaa Island,Estonia,and mapping of volcanic ash clouds
bentonites K-bentonites Telychian correlation isopach schemes East Baltic
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2009/10/21
Thirty suspected altered volcanic ash (bentonite) samples from the Nässumaa-825 and Orissaare-859 sections were analysed by the X-ray fluorescence method. Twenty of these samples revealed chemica...
Microphysical and optical properties of Arctic mixed-phase clouds. The 9 April 2007 case study.
Microphysical optical properties Arctic mixed-phase clouds
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2009/9/14
Airborne measurements in Arctic boundary-layer stratocumulus were carried out near Spitsbergen on 9 April 2007 during the Arctic Study of Tropospheric Aerosol, Clouds and Radiation (ASTAR) campaign. A...
Comparison of a global-climate model simulation to a cloud-system resolving model simulation for long-term thin stratocumulus clouds
global-climate model cloud-system resolving model long-term thin stratocumulus clouds
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2009/9/14
A case of thin, warm marine-boundary-layer (MBL) clouds is simulated by a cloud-system resolving model (CSRM) and is compared to the same case of clouds simulated by a general circulation model (GCM)....