Accession Number : ADA543279


Title :   Changes in the Arctic: Background and Issues for Congress


Descriptive Note : Congressional research rept.


Corporate Author : LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE


Personal Author(s) : O'Rourke, Ronald


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA543279


Report Date : 07 APR 2011


Pagination or Media Count : 72


Abstract : The diminishment of Arctic sea ice has led to increased human activities in the Arctic, and has heightened interest in, and concerns about, the region's future. The United States, by virtue of Alaska, is an Arctic country and has substantial interests in the region. On January 12, 2009, the George W. Bush Administration released a presidential directive, called National Security Presidential Directive 66/Homeland Security Presidential Directive 25 (NSPD 66/HSPD 25), establishing a new U.S. policy for the Arctic region. Record low extent of Arctic sea ice in 2007 focused scientific and policy attention on its linkage to global climate change, and to the implications of projected ice-free seasons in the Arctic within decades. The Arctic has been projected by several scientists to be perennially ice-free in the late summer by the late 2030s. The five Arctic coastal states--the United States, Canada, Russia, Norway, and Denmark (of which Greenland is a territory)--are in the process of preparing Arctic territorial claims for submission to the Commission on the Limits of the Continental Shelf. The Russian claim to the enormous underwater Lomonosov Ridge, if accepted, would reportedly grant Russia nearly one-half of the Arctic area. There are also four other unresolved Arctic territorial disputes. The diminishment of Arctic ice could lead in coming years to increased commercial shipping on two trans-Arctic sea routes. Current international guidelines for ships operating in Arctic waters are being updated. Changes to the Arctic brought about by warming temperatures will likely allow more exploration for oil, gas, and minerals. Warming that causes permafrost to melt could pose challenges to onshore exploration activities. Increased oil and gas exploration and tourism (cruise ships) in the Arctic increase the risk of pollution in the region.


Descriptors :   *SEA ICE , *PERMAFROST , *OCEAN ENVIRONMENTS , *ARCTIC REGIONS , NATIONAL SECURITY , RISK , WATER , CANADA , ALASKA , GASES , CONTINENTAL SHELVES , HEATING , MELTING , CLIMATE , RUSSIA , INTERNATIONAL , MERCHANT VESSELS , NORWAY , POLLUTION , SHIPPING , MINERALS , SHORES , GREENLAND , DENMARK , UNITED STATES , GLOBAL , ARCTIC OCEAN , TEMPERATURE , CONGRESS


Subject Categories : SNOW, ICE AND PERMAFROST


Distribution Statement : APPROVED FOR PUBLIC RELEASE