Assertion: glacier's balance | /r/CapableOf | average −0.48 m/a
Facets:
value: from 1984–2008
type: TEMPORAL
Source sentences:
text: North Cascade glaciers annual balance has averaged −0.48 m/a from 1984–2008, a cumulative thickness loss of over 13 m or 20–40% of their total volume since 1984 due to negative mass balances.