Via its role in aerosol formation, cosmic ray may affect the global cloudiness and hence climate. Here we show that an increase in cosmic ray fluxes may lead to an increase in particle production in the lower troposphere but a decrease in particle production in the upper troposphere. In addition to the reported positive correlation between cosmic ray variations and low cloudiness, our analysis ...

Oceanic cloudiness, precipitation, and sea-surface temperature (SST) are important and related climate fields. Here development of a new historical analysis of total cloudiness over the oceans is described. Some joint evaluation of cloudiness, SST, and precipitation is done to help to give an overall picture of how these variables change and interact on regional to global scales since 1900. Int...

www.sciencemag.org (this information is current as of February 16, 2007 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/314/5804/1419 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/1131779/DC1 can be found a...

The interactions between the semi-annual oscillation (SAO), near-surface wind speed and cloudiness at seven Antarctic stations are described, as is how near-surface temperature is affected. A firmly established half-yearly wave, in both the mean annual cycle of wind speed and of cloudiness, was found at two stations with limited local disturbances: Halley and Faraday. Following a significant we...

The goal of this project is to increase our understanding of the modification of complex atmospheric dynamics, cloudiness, and fog due to the interaction of the air, sea, and land in a coastal region. This increased understanding will lead to improvements in parameterizations of turbulence, cloudiness, and fog. In general, it will improve the episodic and seasonal forecasting of coastal weather...