You’ve got some data and think a Pearson type III distribution might fit it nicely, but how do you go about choosing the parameters? The obvious way — using the mean, standard deviation and skewness of the sample — is much frowned upon. That’s because it can give a biased fit, although in the real world it often performs well, as we’ll see. . . . → Read More: Fitting the Pearson type 3
We did type III, so what about the Pearson type IV probability distribution? One author calls the type IV a Cinderella distribution¹ — it’s a beautiful thing, but completely lost to most. . . . → Read More: Pearson type 4 in Excel
We’ve updated sea ice, so it’s time to have another look at the global temperature series I last updated nearly a year ago. Here’s the instrumental averages with another year on the traces. Ho-hum … still shooting up; still on track
. . . → Read More: More paint drying
Here are all those charts updated and collated for you… . . . → Read More: Season 2014 roundup
Another arctic melt season is over, so it’s time to check progress. This year it’s more good news. The recovery over the last couple of years has continued, though it remains but a bump in a long term decline.
. . . → Read More: Arctic sea ice update
Fareweel to a’ our Scottish fame, Fareweel our ancient glory;
. . . → Read More: Err … what he said.
Click refresh on your browser to see the latest plots.
Ok, time to call it. There’s now no realistic chance that the 168.5 cm peak snow depth recorded on 24 July will be exceeded. That’s as measured by Snowy Hydro Limited at Spencers Creek, midway between Perisher Valley and Thredbo, NSW, Australia, at around 1830 m elevation.
. . . → Read More: Season 2014 peak depth
Another little event is showing this week, with maybe some actual snow this time. Needed.
He died high on the west ridge of Everest, 30 years ago next month. Fred touched all kinds of people in surprising ways that I’ve gradually discovered over the years. My guide, my inspiration, my rock in a scary world … but not just mine. . . . → Read More: Fred
August has been ridiculously slow, but with the change of month we seem to be slipping straight back into a standard 7-10 day winter pattern. There’s now a pretty clear repeat event to next week’s, due late in the week following
. . . → Read More: 10-12 September