Glacier Mass Balance and Regime: Data of Measurements and ...

7895 km 2 , in 1958), Barnes Ice Cap (area 3090 km 2 , in 1962-64), Vavilova Ice Cap (area 1817 km 21974-81, 1986-88), Columbia Glacier (area 1090 km 2 , 1978) and others.The aggregate area of small glaciers covered by mass-balance measurements reached about 3000km 2 at the end of 1950s and averaged 5725 km 2 for the 1961-1998 period, which is about 0.8-0.9% ofthe area of all small glaciers on Earth estimated by Meier and Bahr (1996). Because the fraction ofmeasured glaciers is very small and possibly biased to the direction of relatively small maritime glaciers,it is difficult to extrapolate the glacier regime data to the global scale.long-term records, area, km^22308230623042302s, long-terms, all glaciers900080007000600050004000all records, area, km^22300300022981960196219641966196819701972197419761978198019821984198619881990199219941996199820002000yearsFig.3.2. Area of glaciers where mass-balance measurements were carried out showing all recordsincluding those with large annual variability, and calculated for the 44 glaciers having long-term massbalancerecords.There are two main reasons for the change in apparent glacier area over the last 50 years. Thefirst is due to new glacier inventories having been published. The second is the change in glacier area48