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Paul Macdonald

@paulmac.bsky.social

1.5K followers 3.4K following 15K posts

Fighting for climate action, and challenging anti-science propaganda, disinformation, and misinformation.

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Paul Macdonald @paulmac.bsky.social · Nov 15

A few years ago, prior to Australia’s ‘Black Summer’, I began capturing extreme events as I became aware of them escalating to a frequency of becoming annual events - some type of disaster of unprecedented scale occurring somewhere where such an event was previously unheard of. 🧵

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Paul Macdonald @paulmac.bsky.social · 1h

#Precpitation
#AnthropogenicGlobalWarming

Paul Macdonald @paulmac.bsky.social · 2h

#Precpitation
#AnthropogenicGlobalWarming

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Paul Macdonald @paulmac.bsky.social · 15h

x.com/volcaholic1/...

#Landslides
#Precipitation
#AnthropogenicGlobalWarming

Paul Macdonald @paulmac.bsky.social · 15h

www.facebook.com/share/r/1BsY...

#Landslides
#Precipitation
#AnthropogenicGlobalWarming

1 1

Paul Macdonald @paulmac.bsky.social · 21h

polarportal.dk/en/sea-ice-a...

#Cryosphere
#Arctic
#SeaIce
#SeaIceVolume
#AnthropogenicGlobalWarming

Paul Macdonald @paulmac.bsky.social · 21h

bsky.app/profile/zack...

#Cryosphere
#Arctic
#SeaIce
#AnthropogenicGlobalWarming

Zack Labe @zacklabe.com · 1d

September #Arctic sea ice extent since the year 1850 - comparison now updated through 2025

I have a couple of other sea ice reconstructions on my website too: zacklabe.com/arctic-sea-i...

Line graph time series of September Arctic sea ice extent for every year from 1850 through 2025. Two datasets are compared in this time series. The Walsh et al. 2019 reconstruction is shown with a solid blue line. The NSIDC Sea Ice Index v3 is shown with a dashed red line only for the satellite era. There is large interannual variability and a long-term decreasing trend over the last few decades.

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Paul Macdonald @paulmac.bsky.social · 21h

www.facebook.com/share/v/1BSW...

#PolarVortex
#Jetstream
#SuddenStratosphericWarming
#AnthropogenicGlobalWarming

Paul Macdonald @paulmac.bsky.social · 21h

www.facebook.com/share/v/1BSW...

#PolarVortex
#Jetstream
#SuddenStratosphericWarming
#AnthropogenicGlobalWarming

Paul Macdonald @paulmac.bsky.social · 1d

x.com/weathermonit...

#Precipitation
#Floods
#AnthropogenicGlobalWarming

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Paul Macdonald @paulmac.bsky.social · 1d

x.com/weathermonit...

#Precipitation
#Floods
#AnthropogenicGlobalWarming

Paul Macdonald @paulmac.bsky.social · 1d

x.com/volcaholic1/...

#Precipitation
#Floods
#AnthropogenicGlobalWarming

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Paul Macdonald @paulmac.bsky.social · 1d

x.com/volcaholic1/...

#Precipitation
#Floods
#AnthropogenicGlobalWarming

Paul Macdonald @paulmac.bsky.social · 1d

www.euronews.com/green/2025/1...

#CostOfInaction
#ExtremeWeather
#AnthropogenicGlobalWarming

Cost of Europe's extreme weather has doubled this decade

Europe is being forced to foot an ever-growing bill as damage from weather and climate-related extremes exceeded €44.5 billion in recent years.

www.euronews.com

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Paul Macdonald @paulmac.bsky.social · 1d

bsky.app/profile/extr...

#ExtremeHeat
#RecordHeat
#AnthropogenicGlobalWarming

Extreme Temperatures Around the World @extremetemps.bsky.social · 1d

ANOTHER 38c day in CHINA

Brutal heat day and night continues in this insanely hot October,a month which is rewriting history.
Next days temperatures will increase even further, breaking dozens/hundreds of records again with peaks close to 40C.

Map credit:Jim Jiang

Paul Macdonald @paulmac.bsky.social · 1d

bsky.app/profile/extr...

#ExtremeHeat
#RecordHeat
#AnthropogenicGlobalWarming

Extreme Temperatures Around the World @extremetemps.bsky.social · 1d

EXTRAORDINARY HEAT IN JAPAN: 35C!
This is the most extreme event in Japanese history.
October records pulverized (see list below).

Also incredible hot nights with Mins up to 28C (above July average):
28.0 Izena
26.2 Yakushima

Much hotter next week!

Paul Macdonald @paulmac.bsky.social · 1d

bsky.app/profile/fire...

#OceanHeat
#Acidification
#Hypoxia
#DeadZones
#BiodiversityLoss
#ExtremeWeather
#AnthropogenicGlobalWarming

The Final Report @firehorse249791.bsky.social · 1d

'One of the most intense marine heatwaves on Earth has developed off the coasts of China and South Korea, where ocean temperatures are up to 5°C (9°F) above normal.

NOAA has classified this event as a Category 4 (extreme) marine heatwave.'

via Colin McCarthy [X]

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Paul Macdonald @paulmac.bsky.social · 2d

For more details and videos of extreme climate and weather events, go to:
x.com/weathermonit...
x.com/volcaholic1
x.com/arab_storms
bsky.app/profile/fire...

#Precpitation
#AnthropogenicGlobalWarming

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Paul Macdonald @paulmac.bsky.social · 2d

x.com/volcaholic1/...

#Landslides
#Precipitation
#AnthropogenicGlobalWarming

1 1

Paul Macdonald @paulmac.bsky.social · 2d

mainichi.jp/english/arti...

#Precipitation
#Storms
#AnthropogenicGlobalWarming

Tokyo's Izu islands see record rainfall as strong typhoon passes - The Mainichi

TOKYO (Kyodo) -- A special heavy rain warning was temporarily issued for the Izu island chain south of Tokyo on Thursday, as a strong typhoon passed n

mainichi.jp

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Paul Macdonald @paulmac.bsky.social · 2d

mainichi.jp/english/arti...

#Storms
#Precipitation
#AnthropogenicGlobalWarming

Tokyo's Izu islands see record rainfall as strong typhoon passes - The Mainichi

TOKYO (Kyodo) -- A special heavy rain warning was temporarily issued for the Izu island chain south of Tokyo on Thursday, as a strong typhoon passed n

mainichi.jp

Paul Macdonald @paulmac.bsky.social · 2d

bsky.app/profile/extr...

#ExtremeHeat
#RecordHeat
#AnthropogenicGlobalWarming

Extreme Temperatures Around the World @extremetemps.bsky.social · 2d

44.2C today in Culiacan Int. Airport is also its

HOTTEST DAY IN HISTORY for any month

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Paul Macdonald @paulmac.bsky.social · 2d

bsky.app/profile/extr...

#ExtremeHeat
#RecordHeat
#AnthropogenicGlobalWarming

Extreme Temperatures Around the World @extremetemps.bsky.social · 2d

HISTORIC HEAT IN MEXICO

Brutal heat today with 44.2C at Culiacan,
Hottest October day in history

(world hottest place today)

Since July, the North Pacific Mexico has been breaking record no-stop ,continuosly.

More records tomorrow

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Paul Macdonald @paulmac.bsky.social · 2d

www.facebook.com/share/r/1CNc...

#Lightning
#AnthropogenicGlobalWarming

Paul Macdonald @paulmac.bsky.social · 2d

The ocean surrounding New Zealand is warming approximately 34% more rapidly than the global average.

environment.govt.nz/publications...

Our Marine Environment 2025

environment.govt.nz

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Paul Macdonald @paulmac.bsky.social · 2d

environment.govt.nz/assets/publi...

#OceanHeat
#Acidification
#Hypoxia
#DeadZones
#BiodiversityLoss
#Extinction
#ExtremeWeather
#AnthropogenicGlobalWarming