Community:Email 11sep09

From CedarWiki
Jump to: navigation, search

Subject: 6th IAGA/ICMA/CAWSES workshop on “Long-Term Changes and Trends in the Atmosphere” From: Louise Beierle <louise@ucar.edu> Date: Fri, 11 Sep 2009 11:38:06 -0600 To: cedar_email@hao.ucar.edu

This is a generic mailing to the CEDAR community sent Sept. 11, 2009. Meetings and jobs are listed at http://cedarweb.hao.ucar.edu under 'Community' as 'Calendar of Meetings' and 'CEDAR related opportunities'. CEDAR email messages are under 'Community' as 'CEDAR email Newsletters'. All are in 'Quick Links' on the main page.


Announcement:

The 6th IAGA/ICMA/CAWSES workshop on “Long-Term Changes and Trends in the Atmosphere” (http://www.hao.ucar.edu/TREND2010/index.php) will be held at National Center for Atmospheric Research (NCAR) Center Green Conference Center, Boulder, Colorado, USA, June15-18, 2010, the week before the 2010 CEDAR (Coupling, Energetics, and Dynamics of Atmospheric Regions) workshop, which will also be held in Boulder.

We are glad that this workshop coincides with the 40th year of uninterrupted work of Ray Roble, who has made substantial contributions in the topic which became a major theme of the workshop. It has been 20 years since Roble and Dickson [1989] first concluded that global change will occur in the upper atmosphere as well as in the lower atmosphere as a result of increased greenhouse gas concentrations. Since this workshop will be held at NCAR where Ray has worked for nearly 40 years, a special session will be dedicated to Ray Roble to honor his contribution to this field, featuring a lead presentation given by Ray Roble followed by a few review talks summarizing the advances in this field after the pioneering path shown in 1989.

Long-term changes to Earth's atmosphere are becoming more and more relevant to the future of our world and it is paramount that we quantify and understand changes occurring at all levels within the coupled atmospheric system. The increasing concentration of greenhouse gases, stratospheric ozone depletion, varying solar and geomagnetic activity, secular change of Earth’s magnetic field, and changing dynamics propagating up from the troposphere are some of the possible causes of long-term changes in the stratosphere, mesosphere, thermosphere and ionosphere. The goals of this workshop are to review the current state of knowledge about trends in these atmospheric regions, and to discuss what research is necessary for resolving inconsistencies, reducing uncertainties, and achieving a deeper understanding of middle and upper atmospheric climate change—especially the relative influences of anthropogenic and solar effects.

We welcome papers using all types of observational techniques to determine the long-term changes and trends that have occurred in the past and also to determine the processes behind those changes. We also welcome contributions which consider the availability, quality and acquisition of various data sets which may be exploited for trend studies, and statistical methods for deriving and validating those trends. Interpretation and attribution of observational results depends heavily on theoretical models and numerical simulations of the trends, and presentations dealing with these topics are particularly welcome. While the troposphere is not the main focus of the workshop, it is clear that it has a major role to play in middle and upper atmosphere trends; papers that demonstrate this relevance are also welcome.

http://www.hao.ucar.edu/TREND2010/index.php

Contacts: Jan Lastovicka (jla@ufa.cas.cz)

       Liying Qian (lqian@ucar.edu)
       Rashid Akmaev (rashid.akmaev@noaa.gov)