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Representation of Arctic Mixed-Phase Clouds and the Wegener-Bergeron- Findeisen Process in Climate Models : Perspectives from a Cloud-Resolving Study
Contributor:Fan, J.; Ghan, S.; Ovchinnikov, M.; Liu, Xiaohong; Rasch, P. J.; Korolev, A.
Two types of Arctic mixed-phase clouds observed during the ISDAC and M-PACE field campaigns are simulated using a 3-dimensional cloud-resolving model (CRM) with size-resolved cloud microphysics. The modeled cloud properties ...
Aerosol Effects on Cirrus Through Ice Nucleation in the Community Atmosphere Model CAM5 with a Statistical Cirrus Scheme
Contributor:Wang, Minghuai; Liu, Xiaohong; Zhang, Kai; Comstock, Jennifer M.
A statistical cirrus scheme that tracks ice saturation ratio in the clear-sky and cloudy portion of a grid box separately has been implemented into the Community Atmosphere Model CAM5 to provide a consistent treatment of ...
Coastal Jet Adjustment Near Point Conception, California, with Opposing Wind in the Bight
Contributor:Rahn, David A.; Parish, Thomas R.; Leon, Dave
Typical spring and summer conditions offshore of California consist of strong northerly low-level wind contained within the cool, well-mixed marine boundary layer (MBL) that is separated from the warm and dry free troposphere ...
On the Role of Sloping Terrain in the Forcing of the Great Plains Low-Level Jet
Contributor:Parish, Thomas R.; Oolman, Larry D.
The summertime Great Plains low-level jet (LLJ) has been the subject of numerous investigations during the past several decades. Characteristics of the LLJ include nighttime development of a pronounced wind maximum of ...
Intercomparison of the Cloud Water Phase Among Global Climate Models
Contributor:Komurcu, M.; Storelvmo, T.; Tan, I.; Lohmann, U.; Yun, Y.; Penner, J. E.; Wang, Y.; Liu, Xiaohong; Takemura, T.
Mixed-phase clouds (clouds that consist of both cloud droplets and ice crystals) are frequently present in the Earth's atmosphere and influence the Earth's energy budget through their radiative properties, which are highly ...
Contributions of Clouds, Surface Albedos, and Mixed-Phase Ice Nucleation Schemes to Arctic Radiation Biases in CAM5
Contributor:English, Jason M.; Kay, Jennifer E.; Gettelman, Andrew; Liu, Xiaohong; Wang, Yong; Zhang, Yuying; Chepfer, Helene
The Arctic radiation balance is strongly affected by clouds and surface albedo. Prior work has identified Arctic cloud liquid water path (LWP) and surface radiative flux biases in the Community Atmosphere Model, version 5 ...
Measurement of Cloud Perturbation Pressures Using an Instrumented Aircraft
Contributor:Parish, T. R.; Leon, Dave
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 ...
Droplet Nucleation : Physically-Based Parameterization and Validation
Contributor:Ghan, Steven J.; Abdul-Razzak, Hayder; Nenes, Athanasios; Ming, Yi; Liu, Xiaohong; Ovchinnikov, Mikhail; Shipway, Ben; Meskhidze, Nicholas; Xu, Jun; Shi, Xiangjun
One of the greatest sources of uncertainty in simulations of climate and climate change is the influence of aerosols on the optical properties of clouds. The root of this influence is the droplet nucleation process, which ...
Simulation and Observations of Stratospheric Aerosols from the 2009 Sarychev Volcanic Eruption
Contributor:Kravitz, B.; Robock, A.; Bourassa, A.; Deshler, Terry; Wu, D.; Mattis, I.; Finger, F.; Hoffmann, A.; Ritter, C.; Bitar, L.; Duck, T. J.; Barnes, J. E.
We used a general circulation model of Earth's climate to conduct simulations of the 12-16 June 2009 eruption of Sarychev volcano (48.1°N, 153.2°E). The model simulates the formation and transport of the stratospheric ...