The line that separates these two areas is called the firn limit or snow line.    From Wordnik.com.  [Glacier] Reference

The physics is well known that gases can diffuse through firn.    From Wordnik.com.  [Crowley Unspliced « Climate Audit] Reference

As a response to the comments about our firn densification smoothing study.    From Wordnik.com.  [Reply to von Storch and Zorita « Climate Audit] Reference

The first effect is thermal and gravitational separation of gas in the firn layer.    From Wordnik.com.  [WSJ: House Energy report on the "mutual admiration society" « Climate Audit] Reference

When this process happens year after year, a number of layers of firn can accumulate.    From Wordnik.com.  [Glacier] Reference

There can not be any significant diffusion barriers, such as layers of crust, in the firn.    From Wordnik.com.  [Crowley Unspliced « Climate Audit] Reference

If the névé survives the ablation that occurs during the summer months it is called firn.    From Wordnik.com.  [Glacier] Reference

We are referred to the Indermuhle NATURE article as proof of how firn/air close-off occurs.    From Wordnik.com.  [Reply to von Storch and Zorita « Climate Audit] Reference

This is because isotope diffusion occurs at a faster rate than thermal diffusion in the firn.    From Wordnik.com.  [Survivor Season 8: the Hockey Team – the Mann Overboard Episode « Climate Audit] Reference

I.e., deep glacial ice is assumed to be a geologically closed matrix after it converts from firn ice.    From Wordnik.com.  [Unthreaded #6 « Climate Audit] Reference

By significant, I mean any effect which could change gas concentrations as the gas diffuses through the firn.    From Wordnik.com.  [Crowley Unspliced « Climate Audit] Reference

UNIDENTIFIED MALE: The Web site, again, is www. flcourts.org and the duplicate Web site is www. firn.edu/supct.    From Wordnik.com.  [CNN Transcript - Breaking News: Florida Supreme Court Stays Certification of Florida Presidential Ballots; Counties Counting Overseas Absentee Ballots - November 17, 2000] Reference

Gas age adjustment is described in detail in Karsten 2004 “Chemical and physical analyses of firn and firn air.”.    From Wordnik.com.  [Crowley Unspliced « Climate Audit] Reference

WATERS: The two sites are www. flcourts.org, that's O-R-G; and the second, our duplicate site, is www. firn.edu/supct.    From Wordnik.com.  [CNN Transcript - Special Event: Florida Supreme Court Spokesman Holds News Conference on Timetable for Manual Recounts Ruling - November 21, 2000] Reference

The argon measurement provides a correction for gravitational separation and allows an estimate of the firn thickness.    From Wordnik.com.  [Survivor Season 8: the Hockey Team – the Mann Overboard Episode « Climate Audit] Reference

We need to better understand the realtionship between firn depth, temperature, the role of the convective zone and gas age.    From Wordnik.com.  [Unthreaded #17 « Climate Audit] Reference

Senate banking bill stalls as Republicans stand firn.    From Wordnik.com.  [CourierPostOnline.com - News] Reference

Cut tos (cùm tamen nil nifi conjedurae firn) confiilunt?.    From Wordnik.com.  [Lux in tenebris, hoc est prophetiæ donum quô Deus Ecclesiam Evangelicam, in regno Bohemiæ ...] Reference

There are also two species of firn which are common to this.    From Wordnik.com.  [Original journals of the Lewis and Clark Expedition, 1804-1806] Reference

After two years it enters the transitional stage between snow and firn.    From Wordnik.com.  [NPR Topics: News] Reference

However, the loss of seismic energy in the porous firn is a disadvantage.    From Wordnik.com.  [R&D Mag - News] Reference

I shall distinguish the large and small firn. both species continue green all winter.    From Wordnik.com.  [Original journals of the Lewis and Clark Expedition, 1804-1806] Reference

In good conditions the small snowy face is skiable, but not for us on today's icy firn.    From Wordnik.com.  [- Lou Dawson's Backcountry Skiing Blog] Reference

But the Wilkins is known to have an intense melt season, and has been observed to have water-saturated firn.    From Wordnik.com.  [RealClimate] Reference

We made 5 kinds, hayseed, sweet firn, cornsilk, mullin leeves, and grape vine. my mouth taisted aufuly all nite.    From Wordnik.com.  [The Real Diary of a Real Boy] Reference

It is impoflible to afcertain who were the firn 1 people that fettled at Nola; but its coins prove it to have been at.    From Wordnik.com.  [Travels in the two Sicilies] Reference

It growi about hedges, aiul ii«t to fourteen inches high; the stalk is firn ind slender, and is divided into several hranchei.    From Wordnik.com.  [The Family Herbal,: And of the Drugs which are Produced by Vegetables of Other Countries : with ...] Reference

By measuring the carbon isotopes in the firn air, scientists can pinpoint the source of atmospheric carbon during the millennia.    From Wordnik.com.  [WebWire | Recent Headlines] Reference

We demonstrate that, for most of Antarctica, firn depth changes are of comparable magnitude as observed ice sheet elevation changes.    From Wordnik.com.  [RealClimate] Reference

'firn,' snow stripped of fine crystals and granulated by time and exposure.    From Wordnik.com.  [To the Gold Coast for Gold A Personal Narrative in Two Volumes.—Volume I] Reference

I’m presuming that the top several 10’s of metres is actually firn and not ice.    From Wordnik.com.  [Juckes, Yang, Thompson and PNAS: Guliya « Climate Audit] Reference

The fact that previous layering was preserved means that any possible previous melting didn’t even extend into the firn.    From Wordnik.com.  [Survivor Season 8: the Hockey Team – the Mann Overboard Episode « Climate Audit] Reference

A sudden temperature change at the surface introduces a ’spike’ into the isotope composition of the gas at the base of the firn layer.    From Wordnik.com.  [Survivor Season 8: the Hockey Team – the Mann Overboard Episode « Climate Audit] Reference

Via firn permu fatisi ApudVerJasinierepiilaodttmvJiàfatiirede - riscaitfit. (lomttÌ4m mitarporieonutuif. jtTX.    From Wordnik.com.  [Pedanii Dioscoridis Anazarbei De medica materia libri sex] Reference

That our (hip was twice in danger of being funk; the firn time by a great ftorm, and 'the fecond by ftriking againft a rock.    From Wordnik.com.  [The Works of Dr. Jonathan Swift, Dean of St. Patrick's, Dublin] Reference