Category Archives: Global Change

Environmental change at the global scale over geologic to historical time scales.

Water Knife Action in California

The prequel for Paolo Bacigalupi‘s The Water Knife is now playing out in California’s Central Valley. California’s Water Knives have targeted the Central Valley irrigation districts supplying farmers with water for irrigating crops. The Byron Bethany and West Side Irrigation Districts are … Continue reading

Posted in Global Change

What Happens in California Does Not Stay in California: The “Not-Just-California” Drought

The drought in California is big news these days, prompting the N.Y. Times to run an in-depth series on “The Parched West” and far-reaching effects of California’s lack of water. Also in the news was a March 12, 2015 OP … Continue reading

Posted in Global Change

Season’s Greetings: Carbon Dioxide Seasonality

Over the Thanksgiving holiday I read a very interesting paper in the journal Nature by J.M Gray and six co-authors (citation at end of article). The article was about the seasonal changes in carbon dioxide in the atmosphere. The iconic … Continue reading

Posted in Global Change

Subnormal

November has given us inclement weather across much of the United States. We can use our climate links to visualize how different this weather is from the climate normals I discussed in a previous post. I make those comparisons from … Continue reading

Posted in Global Change

Death by Degrees

A common refrain in the climate change literature, both popular and professional, is the impending doom of human society by human-induced global warming. A temperature threshold is even suggested that will tip the world into “dangerous climate change”: 2°C (3.2°F) … Continue reading

Posted in Global Change

The Goldilocks Effect and Megalopolization: Part II, Losing a Paleoclimate Legacy

While driving along I-15 through the Wasatch Front Megalopolis (see previous post), there are some interesting features. The most obvious is the steep front of the Wasatch Range to the east. This mountain range was uplifted along a large, active … Continue reading

Posted in Global Change

The Goldilocks Effect and Megalopolization: Part I, Modern Climate

I recently drove through the Wasatch Front Urban Corridor (figure below), on my way from western Montana to southern Utah. This roughly 120-mile long corridor is a spectacular example of an emerging megalopolis and the power of humans to modify … Continue reading

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