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In way of a disclaimer, most of my posts above are based on over 40 years of teaching geology, hydrology, meteorology, and climatology courses at universities. For Skiguy, my personal best carbon footprint reduction efforts have been not having any kids and grandkids (Sierra should approve...

Air pockets in a snowpack become sealed gas bubbles preserved in glacial ice during metamorphism. The gas bubbles can then be analyzed with a GC-MS (gas chromatograph - mass spectrometer) to determine the concentrations of various trace atmospheric gases like CO2 and methane along with a variety...

A record-breaking average global temperature for 2024 is all the more remarkable because the year has been influenced by La Niña rather than by El Niño, so greenhouse gas emissions are now more than offsetting another cyclic natural climate variable besides the orbitally-forced cycles noted earlier.

I do not see any cherry-picking of ice core records posted in this thread, as nearly all ice core records show the anomalous increase in atmospheric CO2 to around 420 ppm over the past few decades. An ice core that does not show the dramatic recent increase in CO2 is one that I helped collect at...

The EPICA ice core in Antarctica extends the temperature and CO2 records showing the same sawtooth pattern in the figure above back to about 800,000 years BP and the Russians are drilling a site in Antarctica that could push the record back to over 1,000,000 years BP, which may shed some light...

Comparing human evolution to 3.8 billion-year-old, single-cell life forms on Earth in the context of atmospheric CO2 seems bizarre to me. Homohabilis, our Homosapien’s ancestors, made their appearance about 2.8 million years ago, about the same time that the Cenozoic Ice Ages began when...

Not sure when Carter Notch hut got its first propane refrigerator, but it was after 1968 when we were still using the ice cave below Wildcat A for storing our perishables, which included crates of fresh eggs (144 count), pounds and pounds of bacon, and frozen OJ, all packed in from the cold...

Thanks for posting this very fine science video, Like NH Chris’s and Lone Stranger’s examples, I have watched the temperature drop over 10 degrees F on my vehicle’s thermistor when driving north on Rte 115 through the broad lowlands of Jefferson and then climb back up over 10 degrees F when...

Looks like Left Gully, but most of video footage appears to be from the avy last spring, as the terrain is steep, whereas Pat Scanlon’s audio mentions that the recent avy was on low angle terrain.

There was (is?) a metal sign on the walkway to Glen Ellis Falls with erroneous text (ex., the last glaciation was over 30,000 years ago and the falls drop into a cirque). A couple of us asked the USFS if we might have that metal sign as a memento in return for providing correct information for...

Essentially same information in November 11, 2024, thread started by NHChris. Maybe post new link there rather th an starting a new thread? Just a suggestion.

You will not have any problem finding the hairpin turn up the slope at the base now if there is any snow on ground as the route to Hale is very popular, even more so in winter once Zealand Road is closed, and also part of a 20+-mile loop over Zealand and the Twins that is also becoming popular...

I quit using the wrist loops on ski poles and trekking poles decades ago for that very reason, with a dislocated shoulder being my largest concern. I think that most b/c ski instructors insist that their clients not use wrist loops on descent. Wrist loops definitely help add power for...

Climate carnage already has begun, decades ago.

Tom Patey wrote about an attempt of the Eiger North Face (“of course”) with Don Whillans when Tom came across a boot frozen into the ice. When Tom yelled down to Don about his find, Whillans yelled back up “check to see if there is a foot in it!”). Recall the recent thread about the finding of...

Before trekking poles became a thing, I began hiking with ski poles as a teenager in the 1960s as that is what all the cool kids at John Caldwell’s Putney Ski School in Vermont were doing for offseason dry-land training. Like Sierra, I was mocked by other hikers on an early climbing trip in...

If you wish to view the terrain during winter conditions, google Steve Smith’s Mountain Wanderer blog for Coppermine Brook slide, March 13, 2023, the day that he visited. Steve encountered three b/c skiers dropping the steep, snow-plastered ledges, and as usual his blog post is loaded with lots...

There are lots of cool innovative, hand-made instruments on the bump north of LOC hut, including a cloud water collector, which provided cutting-edge data in 2023 on particulate matter from the Canadian wildfires. There is also an instrument with a glass cover for measuring CO2 created by plant...

The east side Mesonet stations are along the Auto Road that the MWO uses weekly year-round for accessing the summit. The stations are expensive, and only recently has the MWO been obtaining better financial support than jn the past. Will be very interesting to compare the two Mesonet datasets...

From Gilfud, Cow Hampsha!