 | United States. Congress. House. Committee on Science - 2001 - 176 pages
...river ice cover in the mid- and high latitudes of the Northern Hemisphere, over the 20th century. • There has been a widespread retreat of mountain glaciers in non-polar regions during the 20th century. • Northern Hemisphere spring and summer sea-ice extent has decreased by... | |
 | William H. Calvin - 2003 - 350 pages
...river-ice cover in the mid- and highlatitudes of the Northern Hemisphere, over the twentieth century. • There has been a widespread retreat of mountain glaciers in nonpolar regions during the twentieth century. • Northern Hemisphere spring and summer sea-ice extent has decreased... | |
 | V. Subramanian - 2002 - 258 pages
...river ice cover in the mid- and high-latitudes of the Northern Hemisphere, over the 20th century. • There has been a widespread retreat of mountain glaciers in non-polar regions during the 20th century. 5. Global average sea level has risen and ocean heat content has increased... | |
 | Daniel A. Vallero - 2006 - 596 pages
...ice cover in the mid- and high latitudes of the Northern Hemisphere, over the twentieth century. • There has been a widespread retreat of mountain glaciers in nonpolar regions during the twentieth century. • Northern Hemisphere spring and summer sea-ice extent has decreased... | |
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... likely to have been a reduction of about two weeks in the annual duration of lake and river ice cover in the mid- and high latitudes of the northern hemisphere, over the 20th century. 