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Robert Rohde @RARohde
, 5 tweets, 3 min read Read on Twitter
This year, like 2017, California has had an unusually hot & dry fire season. Most of the largest and most destructive wildfires in CA history have happened under such conditions. Climate change is making this situation worse.

#CaliforniaFires #ClimateChange
I also created an animated version which helps to emphasize how weather conditions during California's fire season have evolved over time. #CaliforniaFires #ClimateChange
Weather data for these images is taken from @NOAA's Climate at a Glance Data Explorer, e.g. ncdc.noaa.gov/cag/statewide/….

Information on the ranking of wildfires comes from @CAL_FIRE.
While I have everyone's attention, it is also worth remembering that hundreds of thousands have been temporarily displaced by the CA fires and tens of thousands have lost their homes.

The @nytimes has a page recommending charities that are trying to help: nytimes.com/2018/11/11/us/…
Many people have asked if they can use this material in other places. The answer is always yes. Please share it widely.

If you want it, the original animation file can be downloaded here: berkeleyearth.lbl.gov/downloads/Cali…
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More from @RARohde see all

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At the end of another year, I am going to take a moment to again reflect on my 10 most popular (i.e. retweeted) tweets of 2018.

#1 and my most popular tweet ever was an animation helping to connect California wildfires to climate change:
My 2nd most retweeted tweet of 2018 was a map from Climate Reanalyzer showing an exceptional surge of warmth that had brought above freezing air to the North Pole in the middle of Arctic winter, more than 30C warmer than normal for that time of year:
My 3rd most retweeted tweet of 2018 was my animated map showing Berkeley Earth's history of climate change from 1850 to 2017:
Read 13 tweets
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1/ In the reporting on the National Climate Assessment, some articles (such as this by @CNN) have focused on the far end of the risk distribution and say that "the economy could lose ... more than 10% of its GDP" by 2100.

I'd like to push back a little.

edition.cnn.com/2018/11/23/hea…
2/ The "10% of GDP" claim comes from this figure in Chapter 29: nca2018.globalchange.gov/chapter/29/

It compares the increase in global mean temperature to the projected US economic losses at 2100.
3/ So yes, the top end of the figure does exceed 10%.

However, the high estimate comes from RCP8.5 (red dots), an emissions scenario which assumes extremely aggressive growth of CO2 emissions.

While possible, I certainly wouldn't regard RCP8.5 as a likely future.
Read 12 tweets
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THREAD) Recently, @KHayhoe created a list of scientists who do climate on twitter, now with >1800 members:

twitter.com/KHayhoe/lists/…

Previously, I extracted the 50 most followed scientists:

twitter.com/RARohde/lists/…

Now, I decided to explore who these top scientists follow.
Before continuing, I should mention that in a previous thread I looked at some of the statistics of the scientists who do climate on twitter:

The top 50 scientists in climate have collectively chosen 135k accounts to follow (94k unique).

These scientists range from following only 50 accounts (@dan_kammen needs more friends?) to 22,301 accounts (@SaleemulHuq likes everyone?) with a median of 1,468 followed accounts.
Read 12 tweets

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I was in my last year of high school in '97 and the Howard Government was campaigning and lobbying world leaders against an emerging climate change deal, as revealed by the 96/97 cabinet papers naa.gov.au/collection/exp…
Cabinet submissions and decisions on #climate change in the first 18 months of the Howard Govt are notable for not mentioning the impacts or consequences of climate change at all....
The motivation that kept Oz reluctantly involved in the Berlin Mandate negotiations that led to the adoption of the Kyoto Protocol was international ostracism and the fear of trade sanctions if it was recalcitrant
Read 7 tweets
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Just returned from Bangkok, where nations made little progress towards finalising the Paris agreement on climate change that aims to limit global temperature rises over the next 80 years.

It was my first @UN #climate change rodeo and there were a few things I wasn't aware of
Under Paris, countries agreed to a fairly detailed set of promises to keep global temperature rises under 2C by 2100.

It was the first time all nations - both developed and developing economies - signed up to the same set of climate rules. But they weren't binding
Parties gave themselves in effect 3 years to come up with a text agreed by everyone, ratified, and translated into national law on a state-by-state basis. The idea is the accord isn't legally binding, but the rulebook it provides could be on a national level
Read 23 tweets
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(1) The loss by fire of Brazil's National Museum brought to mind the two Getty Center sites in Los Angeles, and other priceless treasure houses around the world.

Politics is central to this issue.

Photo: People gathering around the burnt out museum today in a kind of embrace.
(2) People are constantly telling me that politics doesn't matter, that it's pointless, that they don't need to form a view and act on it.

What a cop out.
(3) You are, of course, free to ignore politics as much as you wish. That's WHY millions have fought and died for the sake of liberty and freedom.

But for most people, if you ignore local, state, national, or international politics, then you're not being part of the solution.
Read 42 tweets
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THREAD: @SecretaryZinke says "hot and dry weather" and "the fuels that overload our forests" are to blame for the #wildfires raging in California and the West. He got a couple things wrong. usatoday.com/story/opinion/… /1
Scientists have known for over a decade that higher temperatures are making wildfires worse. Fire season is longer, and fires are more intense now. science.sciencemag.org/content/313/57… /2
And what's causing those high temperatures? Higher CO2 emissions. And what's causing that? The burning of fossil fuels. /3 ipcc.ch/report/graphic…
Read 11 tweets
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Late last night veteran #climate journalist @Revkin asked some sharp questions about @Sierra_Magazine’s “The Case for Climate Reparations,” spurred by an appreciative post from NYC Chief Resilience Officer @dzarrilli. Here’s my response …
My essay is only concerned with climate change-related damages in the US spurred, as I argue, by US actors like the oil majors. I could’ve written about Peruvian villagers suing a German energy giant & melting glaciers in the Andes, but that’s beyond the scope of my article.
So I had to identify extreme weather events in the US. As NOAA has reported, 2017 was the most destructive year on record for “natural” disasters. See this tracker ncdc.noaa.gov/billions/summa…
Read 21 tweets
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THE TRUE ORIGIN OF RESTAURANTS
Thread

Centuries ago, like now, there were hostels, posadas or taverns where food was served in exchange for money, as in a thermopolium in Rome (snack-bar) where we, readers of @LRB @TwitterBooks @nytimes @NewYorker @washingtonpost, would often go
After the #fall of the #Roman #Empire in these businesses food was served in shared tables and consisted of a fixed menu, according to what was already prepared. Even the nobility, like celebrities today, would frequent when traveling.
But, when did the concept and business of restaurants truly begin?
It began with Paracelsus (1493-1541), a brilliant Swiss physician who modernized medicine with rational clinical judgment and changed the way we eat in the #Western #world.
Read 29 tweets

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