Now showing items 1-10 of 20
Aerosol Property Variations Over Global Oceans as Observed by the A-train Satellites
Contributor:Luo, Tao; Yuan, Renmin; Wang, Zhien; Zhanga, Damao
Satellite observations show large marine aerosol property variations over global oceans. With new A-train satellite measurements, this study explores processes controlling these aerosol variations. Results show that marine ...
Relationships of Biomass-Burning Aerosols to Ice in Orographic Wave Clouds
Contributor:Twohy, C. H.; DeMott, P. J.; Pratt, K. A.; Subramanian, R.; Kok, G. L.; Murphy, Shane; Lersch, T.; Heymsfield, A. J.; Wang, Zhien; Prather, K. A.; Seinfeld, J. H.
Ice concentrations in orographic wave clouds at temperatures between -24° and -29°C were shown to be related to aerosol characteristics in nearby clear air during five research flights over the Rocky Mountains. When clouds ...
Comparison of Arctic Clouds Between European Center for Medium-Range Weather Forecasts Simulations and Atmospheric Radiation Measurement Climate Research Facility Long-Term Observations at the North Slope of Alaska Barrow Site
Contributor:Zhao, Ming; Wang, Zhien
This study evaluated the European Center for Medium-Range Weather Forecasts (ECMWF) model-simulated clouds and boundary layer (BL) properties based upon Atmospheric Radiation Measurement Climate Research Facility observations ...
Three-Dimensional Structure of Transatlantic African Dust Transport : A New Perspective from CALIPSO LiDAR Measurements, The
Contributor:Liu, Dong; Wang, Yingjian; Wang, Zhien; Zhou, Jun
The lack of information on the vertical distribution of dust, in turn, results in large uncertainties when attempting to evaluate the impacts of dust on climate processes. We analyzed over two years of LIDAR measurements ...
African Dust Impacts on Mixed-Phase and Warm Stratiform Clouds Observed from CALIPSO and CloudSat Measurements
Contributor:Zhanga, Damao; Wang, Zhien; Heymsfield, Andrew; Luo, Tao
Impacts of African dust particles on mixed-phase and warm stratiform clouds are investigated using four years of collocated CALIPSO and CloudSat measurements. The results show that dust could enhance ice particle concentrations ...
Dryline in Southeast Wyoming. Part II : Airborne In Situ and Raman LiDAR Observations, A
Contributor:Bergmaier, Philip T.; Geerts, Bart; Wang, Zhien; Liu, Bo; Campbell, Patrick C.
Part I of this study describes the mesoscale structure of a dryline over southeastern Wyoming. This dryline formed just east of the western rim of the high plains on 22 June 2010 and became more defined as it progressed ...
Ice Concentration Retrieval in Stratiform Mixed-Phase Clouds Using Cloud Radar Reflectivity Measurements and 1-D Ice-Growth Model Simulations
Contributor:Wang, Zhien; Heymsfield, Andrew J.; Field, Paul R.; Bailey, Matt; Rogers, Dave; Stith, Jeffrey; Twohy, Cynthia; Haimov, Samuel
Lenticular wave clouds are used as a natural laboratory to estimate the linear and mass growth rates of ice particles at temperatures from -20° to -32°C and to characterize the apparent rate of ice nucleation at water ...
Global View of Midlevel Liquid-Layer Topped Stratiform Cloud Distribution and Phase Partition from CALIPSO and CloudSat Measurements, A
Contributor:Zhang, Damao; Wang, Zhien; Liu, Dong
The first 2 year measurements from Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) lidar and CloudSat radar were analyzed to study the distribution and phase partition of midlevel liquid-layer ...
On Factors Controlling Marine Boundary Layer Aerosol Optical Depth
Contributor:Luo, Tao; Yuan, Renmin; Wang, Zhien
Sea spray aerosol is one of the largest natural contributors to the global aerosol loading and thus plays an important role in the global radiative budget through both direct and indirect effects. Previous studies have ...
Contrails of Small and Very Large Optical Depth
Contributor:Atlas, David; Wang, Zhien
This work deals with two kinds of contrails. The first comprises a large number of optically thin contrails near the tropopause. They are mapped geographically using a lidar to obtain their height and a camera to obtain ...