Speed blogging #cawater #climate_change

(TM David Zetland)

The late Pete Seeger sang about water, especially the Hudson River he fought for.

Have trouble understanding California’s water system? Even if you’ve lived in the state all your life? One of the foremost experts on the subject, Jay Lund, explains it all for you in one map.

All dry on the Western Front: Compare last year’s California snowpack with this year’s, in satellite images. Click on “View Image Comparison” to get a side-by-side view with a sliding divider.

Whether or not this is evidence of climate change, the long-term warming trend was sustained in 2013. Read more in NCDC’s Global Climate Report.

Climate scientists are 95 percent certain global warming is happening and human actions are largely the cause. AP science writer Seth Borenstein explains what 95% certainty of warming means to scientists.

President Obama said it Tuesday night:

But the debate is settled. Climate change is a fact. And when our children’s children look us in the eye and ask if we did all we could to leave them a safer, more stable world, with new sources of energy, I want us to be able to say yes, we did.

You might be inclined to argue, but these three arguments have been discredited:

“The warming is just part of a natural cycle.”

“We’ve been warming up since the last ice age.”

“To think humanity can influence the climate is pure arrogance.”

The Los Angeles Times’ letters page editor has no time for climate change denial:

Saying “there’s no sign humans have caused climate change” is not stating an opinion, it’s asserting a factual inaccuracy.

Such errors of fact won’t make it on the LAT’s letters page.

Lest you think that global warming was happening, but has leveled off since 1998: no, it hasn’t and here’s why.

One group that has a monetary stake in the matter is the reinsurance industry. If they bet that the climate will go on as usual and that there will be no more than the usual number of extreme events — and that turns out to be wrong — it could cost them tens of billions of dollars per year. There are no climate change deniers to be found in the reinsurance business.

Finally, if the West Virginia chemical spill were terrorism