The 2007-2008 International Polar Year (IPY) provides an international framework for improving our understanding of high-latitude climate change and enhancing our skill in predicting world-wide impacts. Recent, well documented observations of the dramatically changing high-latitude components of earth’s cryosphere (e.g., those areas where water is frozen either seasonally or permanently) make IPY science investigations particularly timely and relevant to scientists, policy makers and the general public. Effective IPY investigations require a range of commitments of resources: from providing support to individual field activities, to those which require the international coordination of complex systems and their operations. During IPY, to date considerable progress is being made towards characterisation of key high-latitude processes by means of spaceborne snapshots of the polar regions. A number of ongoing efforts are described below which are designed to coordinate these satellite acquisitions, to help demonstrate the benefits of a cryospheric observing system component, and to develop IPY data legacy comprising critical climate benchmarks.

During the IPY, the USGS will highlight numerous long-term studies of the polar regions on the state of the cryosphere (glaciers, permafrost, sea ice), the impacts of change over the last few decades, the petroleum resource potential of the Arctic, and the consequences of permafrost thawing on the Yukon River watershed in Alaska and Canada. Also, we will produce a high resolution Landsat mosaic image of Antarctica.

Plate tectonics and polar ocean gateways: The keys to understanding long-term global change Water mass exchange between world oceans is of great significance for long-term global climatic change and is controlled by tectonic and sedimentary evolution of oceanic gateways and basins. Reconstructions of the geological history of polar oceanic basins and gateways feed into computer simulations of climate change. PLATES & GATES is an international program focussing on the tectonic and sedimentary formation of those areas of the Arctic and Antarctica which are in particular critical for global change.

ICESTAR & International Heliophysical Year (IHY) - Interhemispheric Conjugacy in Geospace Phenomena and their Heliospheric Drivers High energy particles from space generate the Aurora and illustrate why the polar regions are unique places for space research. Throughout IPY scientists from 22 countries, using instruments on balloons, ships, spacecraft and the ground will investigate how plasma and magnetic fields from the Sun affect near-Earth space and our atmosphere, improving our understanding of the impact of space weather on satellites, ground-based technology, terrestrial weather and climate.

Terrestrial ecosystems in Arctic and Antarctic: effects of UV light, liquefying ice, and ascending temperatures (TARANTELLA)

Predicted changes in climate and ozone concentrations in the Polar Regions make it critically important to understand how changes in key environmental factors influence polar terrestrial ecosystems via the modification of their individual but interconnected components.

Observational and experimental research on the effect of climate change and ozone depletion is affiliated to international research programmes including the EBA, Evolution and Biodiversity in the Antarctic project, SCAR in the Antarctic, and in the Arctic to ITEX, International Tundra Experiment as well as IGBP-GCTE.

TARANTELLA aims to coordinate these studies by focusing on the experimental approach, in both the Arctic, in collaboration with ITEX, and in the Antarctic.

A common methodology is used, the so-called Open-Top Chambers (OTC) or small greenhouses for temperature manipulations; for UV-B field research, UV-B supplementation (lamps) and/or UV-B exclusion (foils), are used to experimentally establish varied UV-B levels.

We will study the responses of the terrestrial, aquatic and glacial communities of organisms, including the microbes, at both poles to global environmental changes. Our key questions include (a) diversity and biogeography, (b) food webs and ecosystem evolution, and (c) links between biological, chemical, and physical processes in icy ecosystems. This is a huge collaboration involving 17 nations and a wide range of field work.

Thermal State of Permafrost Permafrost conditions underlie upwards of 25% of the Earth's land surface. Permafrost temperatures are a function of past and present climates and vary greatly depending on location. Lacking is a comprehensive set of pemafrost measurements against which to assess present and future regional and global changes. Duirng IPY, TSP researchers will obtain a "snapshot" of permafrost temperatures in hundread of borehole throughout the world.

Integrated Data and Information Services IPY projects cover a broad range of physical, life, and social sciences. The data from these projects will be unprecedented in their breadth and diversity and will be the primary legacy of IPY. Data management is the key to preserving and building on that legacy. The IPYDIS is the responsible for managing this immense and diverse volume of data and addressing substantial challenges in the evolution of scientific values, methods, and cooperation.

This project – which involves scientists from two dozen countries – will examine how atmospheric processes in the Southern Hemisphere affect current climate, and provide an important baseline for assessing future climate change. COMPASS will obtain the first circumpolar snapshot of the Southern Hemisphere atmospheric environment – covering physical, chemical and ecological properties – a major observational milestone. Only by harnessing the resources of the global polar community can this multinational project achieve the depth of investigation required to improve knowledge of future climate change and its impacts.

IceCube is a neutrino observatory for astrophysics to be installed at the South Pole over seven austral summers ending in 2011. IceCube will look for extremely high-energy neutrinos coming from the northern sky whose sources are active galactic nuclei, supernova remnents, gamma-ray bursts, and active supernovae. The IceCube In-Ice detector will consist of a minimum of 4800 optical modules deployed on 80 vertical strings buried 1450 to 2450 meters under the surface of the ice, and an IceTop surface air-shower detector array comprised of a minimum of 320 optical modules. By early 2008, one half of the detector, 40 strings with 2400 optical modules, was collecting, storing and analyzing data. Weekly updates during the austral season, November-January, are posted here.

IceCube is an international project sponsored and conducted by the United States and several non-U.S. countries. The United States National Science Foundation supplies funds for the design, development, fabrication, procurement, testing, drilling and operations of the project at the South Pole.