We know that the Arctic exerts a critical influence on the Earth's climate and has done so for millions of years. Locked in Arctic ice and sediments are vital records of what the Earth's environment was like in the past. To more accurately predict the future of the Earth's climate, we need to know more about the extremes. Finding out how hot and how cold the Earth was in the past, and how much, as well as how little of it was covered by ice are key questions that APEX hopes to help answer.

The overall goal of this initiative is to advance our knowledge of climate warming in the Arctic, by studying past climate change. We will focus mainly on the ocean circulation and climate of the NW Eurasian continental margin. The present climate in the Arctic shows signs of rapid change with decreasing sea ice cover and increasing temperature of the Atlantic Water. The implications of this warming are highly uncertain, as modelling experiments projecting temperatures for the next 100 years show a largescatter at high northern latitudes.

The Circumpolar Flaw Lead (CFL) System Study is a major international effort under Canadian leadership that aims at understanding how changes in the physical system affect biological processes, towards a better understanding of the potential effects of climate change. The CFL project is part of the PAN-AME cluster.

The project HERMES is designed to gain new insights into the biodiversity, structure, function and dynamics of ecosystems along Europe's deep-ocean margin to underpin the future development of a comprehensive European Ocean and Seas Integrated Governance Policy. It represents the first major attempt to understand European deep-water ecosystems and their environment in an integrated way (geosphere, hydrosphere, biosphere of a pan-European range). HERMES aims to compare and contrast selected environments around the European margin from high northern latitudes (focus of this IPY proposal) to the Black Sea.

The SCAR-programme EBA (2004-13) will address the impacts of climate change on species biodiversity, evolutionary adaptations and depletion of marine fisheries on community dynamics in the Southern Ocean. A better understanding of the effect of such changes will be obtained by investigating the acclimatory responses to high latitudes. It will contribute to development of a baseline understanding of sensitive ecosystems.

Polar Heritage - once lost, it can never be regained. Protection and preservation of early scientific bases in polar regions. A multidisciplinary and international conference with presentations focussed on technical and administrative issues associated with the protection and preservation of historic scientific bases and in "Historic polar resources are disappearing! Once lost, it can never be regained. Protection and preservation of early scientific bases in polar regions. The age of discovery in polar regions also brought scientific research and soon the first non-indigenous structures were built. Regretably some of these historic sites have already been lost and more are under threat. The International Polar Heritage Committee IPY conference in Barrow Alaska, the site of one the first IPY scientific stations will assemble organisations and individuals working to protect these sites so they can share their expertise and experience to preserve them. "

Northern High Latitude Climate variability during the past 2000 years:implications for human settlement. "NORCLIM investigates how natural climate change over the past two millenia has affected human presence in the Arctic. Examples are the timing of Viking settlement on the Faroer, Iceland, Greenland and Newfoundland and the shift in whaling activities from Spitsbergen to Davis Strait during the Little Ice Age. To achieve the NORCLIM goals, geologists, climatologists and archeologists from seven counties will carry out marine and terrestrial fieldwork on key locations along a Newfoundland-Spitsbergen transect.

Understanding the state of the cryosphere, and its associated past, present and future variability, is essential to understanding physical and biogeochemical interactions between the oceanic, atmospheric, terrestrial, social, cultural, and economic systems. This project will provide a framework for assessing the state of cryosphere. It will establish links with IPY projects involved in monitoring, assessing, and understanding the global cryosphere, and with projects involved in socioeconomic and cultural issues.

The Impacts of Oil and Gas Activity on Peoples in the Arctic Using a Multiple Securities Perspective From 2007-2010 a broad-based group of students and researchers from diverse backgrounds (political science to ecology) will take a human security approach to studying how oil and gas development will affect Arctic communities in Norway, Russia and Canada. By making human security central, we expect to connect Arctic peoples, researchers and policy makers in ways that will result in genuine listening and interaction among the groups.

ArcticWOLVES is an international initiative developed for the International Polar Year (IPY) 2007-2008. The project will build a network of circumpolar wildlife observatories in order to assess the current state of arctic terrestrial food webs over a large geographical range. The network will provide baseline information to evaluate current and future population trends for a large number of species at several locations using standard protocols. Another aim of the project is to determine the relative importance of bottom-up (resources) and top-down (predators) forces in structuring arctic food webs, and how climate affects these trophic linkages.