FIGURE 7.5 Location and changes of the Ak-shirak glacier system, 1943-2001. (a) ASTER image for September 14, 2001. (b) Location map. In the other insets the green lines indicate glacier outlines in 1943: (c) decrease in glacier size through climate change and direct anthropogenic impact, (d) decrease in size of a surging glacier and appearance of new glaciers, (e) increase in area of outcrops and in the perimeters of water divides between glaciers, and (f) disappearance of former small glaciers. SOURCE: Khromova et al. (2003). Reprinted with permission from the American Geophysical Union, copyright 2003.

result in major scientific advances in the near future with important ramifications for climate research. As for the other examples of accomplishments listed in this chapter, these measurements and the resulting trend analyses are important indicators of climate change and exemplify the value and importance of long-term data sets for understanding the complex climate system.

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