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firn

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firn

Snow that has lain on the ground for a full calendar year. Firn is common at the tops of mountains; for example, the Alps in Europe. After many years, compaction turns firn into ice and a glacier may form.



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FIRN enabled Walsh to receive post-transplant care by providing funding for temporary housing near UCLA, and Kaiser provided transportation from Walsh's home to UCLA's Westwood campus.
Since snow and ice can serve as natural archives for atmospheric events, one may expect to find chemical evidence of prior years' fire seasons in snowpits, firn, and ultimately ice cores.
About a quarter of that shrinkage, or 7 cm, may have resulted from snow packing down into denser material called firn, says Andrew Shepherd, a glaciologist at the University of Cambridge in England.
 
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