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Jeff Berardelli Profile picture
@WeatherProf
Jun 20, 2023 • 10 tweets • 5 min read • Read on X
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In 2018 #ShowYourStripes began as 100s of meteorologists around the globe like @BernWoodsPlacky sported @ed_hawkins genius Warming Stripes visual to promote climate change awareness. This Wednesday June 21st is the 5th year!! Please join us by downloading your stripes 1/ Image
You can download global and regional stripes here: showyourstripes.info 2/
And you can download local US stripes here: climatecentral.org/graphic/show-y…
Since 2018 Warming Stripes have become the international symbol of climate change... Art installations, billboards, rock bands, sports teams etc... 4/ Image
US House of Reps climate committee 5/ Image
The front cover of Greta's book 6/ Image
Inspired tons of other designs including Future Choices... 7/ Image
Recently the LA Times made stripes for the drought 8/ Image
They have even reached the highest power on Earth!!
So on Wednesday #ShowYourStripes to help educate the masses on our warming Planet. 9/ Image
And join me, @ed_hawkins and @BernWoodsPlacky Tuesday (today) at Noon Eastern US time for special LIVE Climate Classroom discussion on #ShowYourStripes day. Watch here: wfla.com/wflanow/ or on FB here: facebook.com/WFLANewsChanne… Image

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More from @WeatherProf

Jeff Berardelli Profile picture
Jun 14
As you may suspect both the dewpoint in FL (surface moisture) and more importantly the precipitable water (total column moisture) in June have been trending up.
For every 1F increase in temperature, the column can hold 4% more moisture. We have warmed ~3F since pre-industrial 1/
Image
Wow now have the capacity for ~12% more moisture. Thus the capacity to fuel more frequent/intense rain. In some cases more moisture means more instability, thus stronger storms & rain rates. Per @MWehner2005 CC spiked Harvey by up to 38%, w/ CC's share of the damage $13B 2/ Image
@MWehner2005 The Gulf is record warm because: the baseline has been warmed by climate change - and- the historic heat dome over Mexico & the Gulf which made for hot/ cloud free weather. The Gulf is a big player in dewpoint and also rainfall rates, a likely contrubuter to FL's extreme rains 3/ Image
Read 4 tweets
Jeff Berardelli Profile picture
Jun 7
25,000 years ago this is how Florida’s coastline looked. Sea level was 427 ft lower with all the water locked up in miles-thick ice at the peak of the last ice age. If you lived in Tampa you’d needed to walk 100 miles W to go to the beach. Follow along on this very educational🧵
Image
This is what it looked like at the last glacial maximum. Ice spread all the way down to NYC and Chicago. If you go to Central Park in NYC you can see the edge of where they ended, there are huge boulders there. These ice ages have occurred every ~100K years recently. Here’s why… Image
Earth’s tilt, orbit and wobble change on the order of 10s of 1000s of yrs. Milankovitch Cycles. This changes amount of solar radiation received and where the sunlight hits, gradually changing Earth’s avg temp over 1000s of years, leading to ice ages and warm periods. Here’s… Image
Read 8 tweets
Jeff Berardelli Profile picture
Jun 6
This image is astonishing for both the message it communicates and for its sci comm value. Incredible work by team @CopernicusEU
It shows global ocean temps for each year since 1940. The alarming, yet brilliant part is the pink shading which highlights the 2023-2024 jump 1/
Image
From 2023-2024 all areas in deep red were record warm. A huge area.
In May 2024 that record hot area was ~25%, so 1/4 of our planet. Huge amount. 2/ Image
The avg global temp of the past 12 months was 1.63 above pre-industrial levels (~3 degrees F).
IPCC says this warming is 100% due to humans unequivocally.
While this spike above the Paris goal of 1.5C maybe be temporary (that is to be seen), we are super close to exceeding it 3/ Image
Read 5 tweets
Jeff Berardelli Profile picture
May 29
Putting aside the Gulf Loop Current, speaking more generally about warming water, in a perfect environment (moist, low shear) for every 3F of sea sfc warming, a strong hurricane’s wind speeds can inc. 20%. So a 150 mph storm, can grow to 180mph storm, and damage pot. ⬆️ 67% 1/
Sea sfc temps across the Gulf & Carib are ~3F warmer than a few decades ago. That’s one reason we should care about a warming world.
The example I use is based on an already strong hurricane in a nurturing environment, but it can happen. Source for calc: michaelmann.net/sites/default/…
Notice the destructive potential increases exponentially as winds increase. According to Mann’s paper a 1C boost yields 12% wind boost and 40% potential damage boost.
A strong storm one category more intense (all other things being equal) can more than double the damage. 3/
Read 4 tweets
Jeff Berardelli Profile picture
Apr 26
“The climate always changes”… that’s true. Over tens of thousands of years Earth’s tilt changes a bit and so does Earth’s orbit around the sun… sometimes closer to a circle, sometimes an ellipse. This changes the amount of sunlight Earth receives and thus Earth’s avg temp 🧵 1/
As a result of orbital changes, every ~100,000 years the Earth sees an ice age. In between - where we are now - are warm periods called interglacials. Notice the difference is only 10 degrees F!
Those changes are natural and generally gradual.
But a century ago that changed 2/ Image
Global average temps have been fairly stable over the past 10K years, with some regional cool and warm periods. But in the past several decades temps spiked (red on right) at a rate >10X the natural rate of anything we’ve seen in millions of years. 3/ Image
Read 4 tweets
Jeff Berardelli Profile picture
Feb 20
The science behind this weekend’s 265 mph jet stream! A trans Atlantic flight reached an astonishing 835 mph. So Lets talk about meteorology, how climate change factors in and not breaking the sound barrier… 🧵 1/
The reason: two jets converge into 1 over the US and a sharp contrast of frigid vs warm air enhance the wind.
The result: a 265 mph upper level jet helps boost a Newark to Lisbon flight to peak speed of 835 mph reaching Lisbon in 5:44…. About an hour faster than normal! 2/ Image
Odd that this story has repeat a few times in the last few years, record flight speeds? Climate change? Recent paper found that for every +1C in temp = 2% inc. in jetstream speed (plus 2.5X for fastest winds). We are at +2C now so that’s 10% boost. Roughly 240 becomes 275 mph 3/ Image
Read 6 tweets

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