Climate Change USA: Seasons

We’ve been looking at patterns of climate change in the conterminous USA (the “lower 48 states”) recently. Let’s see what’s been happening in the different seasons of the year.

Thank You

It’s easy to think the world is headed for disaster, and we can’t stop it.

An Issue of Survival

Time to Listen

Judith Curry’s Brain goes on Hiatus

As tempting as it is to tell Judith Curry to “Do the math!” — I don’t think she can handle it.

A recent post at WUWT quotes her saying this little gem:

Global Warming USA: Patterns of Drought

A good measure of drought severity is the Palmer Drought Severity Index, also called simply “PDSI.” One thing to keep in mind is that negative numbers indicated drought, the more negative the more severe, while positive numbers indicate wet conditions. Values of -2 or lower indicate moderate drought, -3 and below are severe drought, and -4 or lower marks extreme drought.

Spread the Word

I’d like to remind everyone that kids will be marching on Washington this Saturday, July 21st, to advocate for real action about climate change. Maybe the best thing you can donate to them is publicity. Got a facebook account? Post about it. Do the twitter thing? Tweet it. Do you blog? Blog about these kids. Their website is here.

They’re showing real courage. They’re showing us old-timers what leadership means. Let’s show them that we support them, that we praise them, that we will shout from the rooftops that people should pay attention to them.

And while you’re at it, encourage everyone to vote climate. That’s also the name of an organization, and their website is here.

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Global Temperature Update

NASA’s Goddard Institute for Space Studies (GISS) has published their data for global average temperature anomaly in June of this year. With June included, the latest data look like this:

Global Warming USA: the Long and the Short of it

Since 1895, the conterminous USA (lower 48 states) has warmed significantly:

Night and Day

I read an article yesterday about the impact of global warming of night-time temperatures. They are significant. The article also talked about night temperatures generally warming faster than daytime temperatures. That made me wonder … where and how is this happening in the U.S. — especially in recent decades?

Fortunately, both high and low temperatures are reported for all 344 climate divisions in the lower 48 states of the U.S. I decided to look just at the data since 1985, in order to focus on what’s been happening recently (a bit more than the last three decades). The process is actually pretty simple: for each climate division, I fit a straight line to the post-1985 diurnal temperature range, that being the high temperature minus the low temperature.