Press Releases Changing Earth Day Press Release or download: English Espanol Spanish Francais French ?????

Press Releases Changing Earth Day Press Release or download: English Espanol Spanish Francais French ?????

Norway has developed a set of Visual Profile Elements for IPY. These include images, collages, fonts, colour schemes, textual graphics, and style manuals. The 'International Polar Year 2007-2008' text at the top of this and every other page of this web site comes from the Norwegian products; several other national IPY web sites use the same textual elements. We use other Norwegian-designed elements in our printed materials, and I use the textual elements, images, fonts and colour maps in all my presentations. We do not insist on the use of these elements, or declare them as the IPY standard. Instead, we feel very pleased to offer them for use by IPY participants, secretariats, and national organisations. Norway makes them available at no cost to the user. IPY IPO thanks the Norwe...

Below is a list of Press officers responsible for launch events around the world. This is also available as a PDF of press_officers. Please also consult National IPY Committees for information on national events. ICSU: {encode=" This e-mail address is being protected from spambots. You need JavaScript enabled to view it " title="Carthage Smith"}, ICSU Paris WMO: {encode=" This e-mail address is being protected from spambots. You need JavaScript enabled to view it " title="Paul Garwood"}, WMO Australia: {encode=" This e-mail address is being protected from spambots. You need JavaScript enabled to view it " title="Sally Chambers"}, Government Antarctic Division Canada: {encode=" This e-mail address is being protected from spambots. You need JavaScript enabled to view it " title="Karen Edwards"}, Canadian IPY secret...

The Arctic sea ice cover is undergoing significant climate-induced changes, resulting in a reduction in ice extent and a net thinning of the sea ice cover. During IPY researchers from 10 nations will be studying the properties and processes that govern this sea ice cover and exploring its role as an indicator and amplifier of climate change. Numerous techniques will be brought to bear on this task, including expeditions, satellite remote sensing, autonomous rovers, buoys, ocean moorings, and numerical models.

During glacial periods ice sheets move faster along so called ‘ice streams’. Ice streams leave footprints on the seafloor when the ice is grounded below the sealevel. This project aims at developing new models of fast ice flow in ice-streams based on analyses of the geological record of past ice-streams.

Recent changes in surface elevation and discharge speed in outlet glacier systems along the margins of the Greenland Ice Sheet have provided examples of dramatic localized shifts in the balance of ice discharge, surface melt, and accumulation. These rapid changes are in sharp contrast to relatively slow variations in surface elevation in the interior, which have been tied to accumulation and firn compaction variations on a decadal timescale. The challenge of documenting and attempting to understand the processes involved has motivated a large collection of proposed research projects aimed at this problem. These range from expansions of ongoing efforts to new projects, and from individual investigators to consortia from a number of nations. They utilize a range of observational and modeling techniques and exploit evolving capabilities in atmospheric modeling, remote sensing for measurement of ice motion and surface conditions, and surface-based and aircraft-based measurement techniques.

The salt content of sea ice is a major control on many climatically and biologically relevant processes (e.g., summer melting rates and surface albedo, the equilibrium thickness of multi-year ice, the formation of the brine channels that harbor microbial life in sea ice, the regulation of carbon fluxes between the atmosphere and ocean by maintaining brine network connectivity, the sea ice mechanical strength and, radiation scattering within the ice). In this project, we will study heat and brine fluxes through sea ice; two processes that are crucial for a better understanding of ice growth and melt dynamics.

This project links together multidisciplinary interests in the region of West Antarctica where the ice sheet discharges into the Amundsen Sea. It is one of the most active ice sheet areas, is already contributing a significant fraction of the increasing sea level, and holds the potential to dwarf other sea level contributions in the future. Aside from routine satellite coverage that monitor elevation and surface features, information about the area is limited. Our project will greatly advance our knowledge of ice dynamics of the area, the basal conditions, sub-shelf oceanic interactions, atmospheric transport of incoming snow, and historical record of ice extent. These studies will be conducted with the direct intention of supplying the involved modeling experts with necessary data to construct, initialize and validate advanced full-stress tensor models of ice flow.