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Characterization of oligomers from methylglyoxal under dark conditions: a pathway to produce secondary organic aerosol through cloud processing during nighttime
oligomers methylglyoxal dark conditions secondary organic aerosol cloud processing nighttime
2010/8/12
Aqueous-phase oligomer formation from methylglyoxal, a major atmospheric photooxidation product, has been investigated in a simulated cloud matrix under dark conditions. The aim of this study was to e...
Cloud condensation nuclei in polluted air and biomass burning smoke near the mega-city Guangzhou, China – Part 1: Size-resolved measurements and implications for the modeling of aerosol particle hygroscopicity and CCN activity
Cloud condensation nuclei polluted air and biomass Size-resolved measurements and implications aerosol particle hygroscopicity CCN activity
2010/8/12
Atmospheric aerosol particles serving as Cloud Condensation Nuclei (CCN) are key elements of the hydrological cycle and climate. We measured and characterized CCN in polluted air and biomass burning s...
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
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...
Synergetic use of millimeter- and centimeter-wavelength radars for retrievals of cloud and rainfall parameters
millimeter- and centimeter-wavelength radars cloud and rainfall parameters
2010/8/12
A remote sensing approach for simultaneous retrievals of cloud and rainfall parameters in the vertical column above the US Department of Energy's (DOE) Climate Research Facility at the Tropical Wester...
Interaction of plasma cloud with external electric field in lower ionosphere
plasma cloud lower ionosphere
2017/3/22
In the auroral lower-E and upper-D region of the
ionosphere, plasma clouds, such as sporadic-E layers and
meteor plasma trails, occur daily. Large-scale electric fields,
created by the magnetospher...
Comprehensively accounting for the effect of giant CCN in cloud activation parameterizations
Comprehensively accounting effect giant CCN cloud activation parameterizations
2010/3/16
Large cloud condensation nuclei (CCN) (e.g., aged dust particles and seasalt) cannot attain their equilibrium size during the typical timescale of cloud droplet activation. Cloud activation parameteri...
Statistical properties of aerosol-cloud-precipitation interactions in South America
Statistical properties aerosol-cloud-precipitation interactions South America
2010/3/16
Given the complex interaction between aerosol, cloud, and atmospheric properties, it is difficult to extract their individual effects to observed rainfall amount. This research uses principle componen...
Spectroscopic Study of ‘CO’ and its Isotopic mm/Submillimeter Lines from Dark Cloud Lynds 183
Radiative transfer—molecular spectral lines—temperature gradient
2010/9/15
We have made spectral line analysis of CO and its isotopic lines from dark cloud Lynds 183 (L183). Our dataset incorporates 12CO(1–– – 0), 13CO(1–– – 0) and 13CO(2–– – 1) lines using NRAO-12m and 12CO...
Evaluation of Arctic cloud products from the EUMETSAT Climate Monitoring Satellite Application Facility based on CALIPSO-CALIOP observations
Arctic cloud products EUMETSAT Climate Monitoring Satellite Application Facility CALIPSO-CALIOP
2010/2/21
The performance of the three cloud products cloud fractional cover, cloud type and cloud top height, derived from NOAA AVHRR data and produced by the EUMETSAT Climate Monitoring Satellite Application ...
During a 4-week run in October–November 2006, a pilot experiment was performed at the CERN Proton Synchrotron in preparation for the Cosmics Leaving OUtdoor Droplets (CLOUD) experiment, whose aim is t...
27-day variation in cloud amount in the Western Pacific warm pool region and relationship to the solar cycle
Western Pacific warm pool region solar cycle
2010/2/21
Although linkages between solar activity and the earth's climate have been suggested and the 11-year cycle in solar activity evident in sunspot numbers is the most examined example of periodicity in p...
Influences of in-cloud aerosol scavenging parameterizations on aerosol concentrations and wet deposition in ECHAM5-HAM
in-cloud aerosol aerosol concentrations ECHAM5-HAM
2010/2/21
A diagnostic cloud nucleation scavenging scheme, which determines stratiform cloud scavenging ratios for both aerosol mass and number distributions, based on cloud droplet, and ice crystal number conc...
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...
Cloud processing of mineral dust: direct comparison of cloud residual and clear sky particles during AMMA aircraft campaign in summer 2006
mineral dust cloud residual AMMA aircraft campaign
2010/2/21
In order to gain insights into the characteristics of the mineral dust particles incorporated in the actual cloud droplets and the related cloud processing, the French ATR-42 research aircraft equippe...
Assessment of Stellar Stratification in Three Young Star Clusters in the Large Magellanic Cloud
Magellanic Clouds galaxies star clusters globular clusters individual NGC 1983,NGC 2002, NGC 2010 Hertzsprung-Russell diagram Methods statistical stellar dynamics
2010/3/8
(abridged) We present a comprehensive study of stellar stratification in young star clusters in the Large Magellanic Cloud (LMC). We apply our recently developed effective radius method for the assess...