1 Background - mountain.PROJECTS

PETRI PELLIKKA AND KARI KAJUUTTI (ED)Engabreen 2001 – specific balance, traditional methodEngabreen 2001 – volume balance, traditional method16001600140014001200120010001000elevation (m a.s.l.)800elevation (m a.s.l.)800600600400400200200-12,0 -10,0 -8,0 -6,0 -4,0 -2,0 0,0 2,0 4,0balance (m w.eqv.)00-40 -30 -20 -10 0 10 20 30 40balance (10 6 m 3 )Net balance Summer balance Winter balanceWinter balance Summer balance Net balanceEngabreen 2002 – specific balance, traditional methodEngabreen 2002 – volume balance, traditional method16001600140014001200120010001000elevation (m a.s.l.)800800elevation (m a.s.l.)6006004004002002000-16,0 -14,0 -12,0 -10,0 -8,0 -6,0 -4,0 -2,0 0,0 2,0 4,0balance (m w.eqv.)-40 -30 -20 -10 0 10 20 30 40balance (10 6 m 3 )0Net balance Summ er balance Winter balanceWinter balance Summer balance Net balanceEngabreen 2003 – specific balance, traditional method1600Engabreen 2003 – volume balance, traditional method16001400140012001200elevation (m a.s.l.)10008006001000800elevation (m a.s.l.)6004004002002000-16 -14 -12 -10 -8 -6 -4 -2 0 2 4balance (m w.eqv.)Net balance Summer balance Winter balance0-40 -30 -20 -10 0 10 20 30 40balance (10 6 m 3 )Winter balance Summer balance Net balanceFigure 5. Mass balance on Engabreen for 2001 (top), 2002 (centre) and 2003(bottom), shown as specific balance on the left, and volume balance on the right.17