Léo Lysandre Tremblay

Humanitarian, Meteorologist
Project Manager at Médecins sans Frontières
Meteorological and Climatic Assistance (MACA)
Malaria Anticipation Project (MAP)

[Doctors Without Borders / Médecins Sans Frontières @MSF_canada]

People in #SouthSudan already struggle to cope with conflict, displacement and a lack of healthcare. Now they are threatened by #ClimateChange too: For the 4th year straight extreme floods are destroying homes, crops and lives. 🇸🇸 can't fix this by itself.

What can be done? 🧵👇

[carol devine @caroldevine]

Cholera is preventable and treatable, global vaccine shortages are not ok and evermore essential this is a climate sensitive disease and many people are already suffering in outbreaks

[Zack Labe @ZLabe]

Temperatures anomalies over the last 9 months in Siberia... it has been an extraordinary year of weather/climate extremes

[Data from JRA-55 reanalysis]

[IRI @climatesociety]

The likelihood of #LaNiña is 90% or higher all the way through winter. #iriforecast

[World Meteorological Organization @WMO]

.@BOM_au and @NOAA both confirm that #LaNiña has formed in the tropical Pacific, with climate models suggesting it's likely to remain until at least the end of 2020.
https://t.co/LspRL8ZK9L
and
https://t.co/mz0Z65zjdH

[Atlantic Council's Climate Resilience Center @ACClimateCenter]

"Unlike severe storms such as Hurricane Maria, the silent scourge of extreme heat can ravage communities without being named or categorized," @SmithsonianMag. #EHRA is changing this by championing the development of a standard to name and rank heat waves. https://t.co/QWBkW5WGus

[Erin Coughlan de Perez @CoughlanClimate]

Awesome article. Really important results - the Red Cross is using GloFAS forecasts, and this would avoid lots of false alarms, esp at long lead-times.

Are the ensemble-reforecast thresholds operational in GloFAS now?
@zservin32 @liz_stephens @FPappenberger @hancloke

[Erin Coughlan de Perez @CoughlanClimate]

We are blind to a potential huge risk - heatwaves in Africa.

Disaster databases are blank, says @FrediOtto, & we need to
1. Record heatwave impacts
2. Develop early warning systems
3. Define heat-health relationships in urban/rural areas of the tropics

https://t.co/vHLWUwmk4B

[François Ruffin @Francois_Ruffin]

Un ciel sans avions, des routes sans camions, des océans sans super-cargos, une vie simple et un commerce local. Voilà la grande trouille du patronat : que nous vivions mieux, que la planète respire.

[Eric Webb @webberweather]

Just to recap my recent tweets & plots regarding this Atlantic Hurricane Season:

-The tropical Atlantic is warm (top 5 warmest on record)

-Wind shear is low (top 5 lowest on record)

-Surface pressures are low (6th lowest on record)

-N Africa is very wet, (possibly record wet)

[Ryan Maue @RyanWeather]

Watching new ECMWF 12z HiRes and then ensembles come in @weathermodels_

A tropical wave will likely have a well defined surface circulation by Saturday morning. Embedded in a favorable moist environment.

Expectation is a powerful hurricane in a week or so.

[Léo Lysandre Tremblay @LeoLysandre]

@CoughlanClimate I wonder if we would see a similar trend on other continents if we had as much historical documentation and a population density as high.

[Léo Lysandre Tremblay @LeoLysandre]

@imranono Congrats Imran! Not a small feat in these times.

[Trish Nayna Schwerdtle @trishnayna]

Proud to publish: 'Calibrating to scale' that adapts the @WHO operational framework for climate-resilient health systems for humanitarian orgs. Concrete real-world examples demonstrate how to mitigate & adapt to deliver sustainable humanitarian healthcare at 1.5+ @MSFAustralia

[Ryan Maue @RyanWeather]

While its possible something may develop outside the tropics again, I'm not seeing anything in the Tropical Atlantic developing in at least the next 10 days.

The actual tropics remain quiet.

[Columbia Climate School @columbiaclimate]

Officially announcing the Columbia Climate School dedicated to addressing the climate crisis and challanges our planet faces with sustainability issues today. It's also the first new school at @Columbia in 25 years!
https://t.co/aYNYNxr9Ds

[Christos Christou @DrChristou]

We’re relieved to know that the 10th deadliest #Ebola outbreak in history is over.

For nearly two years, our teams at @MSF and other partner orgs have been hard at work in #DRCongo to treat patients & support local health facilities.

https://t.co/8hfNnwtsK0

[Erin Coughlan de Perez @CoughlanClimate]

A piercing article about institutionalized racism in the humanitarian sector.

“If international organisations believe in localisation, then it is not a matter of whether it is viable but rather making it happen.” https://t.co/T6aw7f4ITk

[carol devine @caroldevine]

Tomorrow, TV weather forecasters globally will use the #warmingstripes to remind viewers that the planet is still warming. #MetsUnite https://t.co/dTKWSEPecW. Ontario Canada & everywhere needs to decarbonize. We need systemic change & green recovery=pandemic & climate-resilience

[Médecins Sans Frontières (MSF) France @MSF_france]

Le coronavirus a aggravé une situation déjà chaotique pour la population civile libyenne et les #migrants bloqués en #Libye. Sacha Petiot, chef de mission #MSF, revient sur la situation dans le pays. https://t.co/zlFFDv9k80