The Cascade Snowpack - a numbers game

| No Comments
A case of bad science getting publicized. From the Seattle Times:
How one number touched off big climate-change fight at UW
The number is eye-popping, and it was repeated so often it became gospel.

The snowpack in the Cascades, it was said, shrank by 50 percent in the last half-century. It's been presented as glaring evidence of the cost exacted by global warming � the drying up of a vital water source.

That statistic has been repeated in a government report, on environmental-advocacy Web sites and in media coverage. Seattle Mayor Greg Nickels recently mentioned it in a guest column in The Seattle Times.

Here's the problem: The number is dead wrong.

The debunking of this statistic, and the question of just how much the state's snowpack shrank, is stirring up a heated debate among the region's climate scientists.

On Monday, it escalated further when University of Washington researcher and State Climatologist Philip Mote stripped a colleague of his title as associate state climatologist, triggering concerns that scientific dissent is being quashed. Losing the title doesn't affect the man's employment at the UW.

The affair might be dismissed as a tempest in an ivory-tower teapot. But it comes at a time when the science of climate change is getting more attention from policy-makers and the public.
And some different numbers:
On one side, Mass, who is working with Albright, said they see only a small downward trend in Cascade Mountain snowpacks, perhaps 10 to 15 percent since the 1940s. The measurement can be exaggerated by starting during a time of high snowfall, in 1950, and ending at a time of low snowfall in the mid-1990s, Mass said. But snowfall has increased again in recent years, and there is little overall change in snowpack in the past 30 years, Mass said.
And:
In late February, professor Dennis Hartmann, chair of the UW Atmospheric Sciences Department, stepped in to referee. After a meeting with the researchers, Hartmann issued a statement saying that snowpack appears to have dropped 30 percent, and that warming in the future will likely affect snowpack, particularly at lower elevations.
Even the worst-case examples are still 20% less than the 50% initially quoted. Reminds me of Otto von Bismarck's famous aphorism: Laws are like sausages, it is better not to see them being made. We need to include Climate Science in that list...

Leave a comment

October 2022

Sun Mon Tue Wed Thu Fri Sat
            1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31          

Environment and Climate
AccuWeather
Cliff Mass Weather Blog
Climate Depot
Ice Age Now
ICECAP
Jennifer Marohasy
Solar Cycle 24
Space Weather
Watts Up With That?


Science and Medicine
Junk Science
Life in the Fast Lane
Luboš Motl
Medgadget
Next Big Future
PhysOrg.com


Geek Stuff
Ars Technica
Boing Boing
Don Lancaster's Guru's Lair
Evil Mad Scientist Laboratories
FAIL Blog
Hack a Day
Kevin Kelly - Cool Tools
Neatorama
Slashdot: News for nerds
The Register
The Daily WTF


Comics
Achewood
The Argyle Sweater
Chip Bok
Broadside Cartoons
Day by Day
Dilbert
Medium Large
Michael Ramirez
Prickly City
Tundra
User Friendly
Vexarr
What The Duck
Wondermark
xkcd


NO WAI! WTF?¿?¿
Awkward Family Photos
Cake Wrecks
Not Always Right
Sober in a Nightclub
You Drive What?


Business and Economics
The Austrian Economists
Carpe Diem
Coyote Blog


Photography and Art
Digital Photography Review
DIYPhotography
James Gurney
Joe McNally's Blog
PetaPixel
photo.net
Shorpy
Strobist
The Online Photographer


Blogrolling
A Western Heart
AMCGLTD.COM
American Digest
The AnarchAngel
Anti-Idiotarian Rottweiler
Babalu Blog
Belmont Club
Bayou Renaissance Man
Classical Values
Cobb
Cold Fury
David Limbaugh
Defense Technology
Doug Ross @ Journal
Grouchy Old Cripple
Instapundit
iowahawk
Irons in the Fire
James Lileks
Lowering the Bar
Maggie's Farm
Marginal Revolution
Michael J. Totten
Mostly Cajun
Neanderpundit
neo-neocon
Power Line
ProfessorBainbridge.com
Questions and Observations
Rachel Lucas
Roger L. Simon
Samizdata.net
Sense of Events
Sound Politics
The Strata-Sphere
The Smallest Minority
The Volokh Conspiracy
Tim Blair
Velociworld
Weasel Zippers
WILLisms.com
Wizbang


Gone but not Forgotten...
A Coyote at the Dog Show
Bad Eagle
Steven DenBeste
democrats give conservatives indigestion
Allah
BigPictureSmallOffice
Cox and Forkum
The Diplomad
Priorities & Frivolities
Gut Rumbles
Mean Mr. Mustard 2.0
MegaPundit
Masamune
Neptunus Lex
Other Side of Kim
Publicola
Ramblings' Journal
Sgt. Stryker
shining full plate and a good broadsword
A Physicist's Perspective
The Daily Demarche
Wayne's Online Newsletter

About this Entry

This page contains a single entry by DaveH published on March 17, 2007 4:42 PM.

Self defense - plant department was the previous entry in this blog.

Elton John's travel problems is the next entry in this blog.

Find recent content on the main index or look in the archives to find all content.

Monthly Archives

Pages

OpenID accepted here Learn more about OpenID
Powered by Movable Type 5.2.9