Shajedul Karim, Ph.D.

Enthusiastic Researcher of Severe Weather # Ph.D in Atmospheric Science| NCAT

[Shajedul Karim, Ph.D. @shajiddreams]

Our findings shows that UHI modify storm & rainfall patterns. Urban forcing is impactful when the large-scale environment supports convection, but has little effect when conditions are unfavorable, highlighting the conditional role of cities in rainfall. https://t.co/JROO3cGdUJ

[United Nations @UN]

Khalilur Rahman of Bangladesh has been elected President of the General Assembly for its upcoming 81st session.

“I will dedicate myself to rebuilding trust, nurturing consensus, and opening space for good faith negotiations,” he pledged.

https://t.co/Y8uEWxQHSR

[Governor Abigail Spanberger @GovernorVA]

Great news! The Coastal Virginia Offshore Wind project — the largest in the country — is delivering reliable energy to Virginia!⚡️

High utility bills are many families’ top concern. This project will power hundreds of thousands of homes and help provide more affordable energy.

[Matthew Cappucci @MatthewCappucci]

What a HORRIBLE forecast by meteorologists – especially myself.

Not only were we spectacularly wrong – we communicated poorly.

It became apparent last night that some of our initial expectations would prove fallacious.

I'd like to address what went wrong with our forecast:

[Shajedul Karim, Ph.D. @shajiddreams]

@BCBtigers How could this be a brilliant runout???! Should be ashamed of it rather celebrating

[Shajedul Karim, Ph.D. @shajiddreams]

More info: https://t.co/HbqhioVwE5

Contact: Director of SWRC, Dr. Stephen Guimond ([email protected])

#AtmosphericScience #SevereWeather #RadarMeteorology #PhDOpportunity #LES

[Shajedul Karim, Ph.D. @shajiddreams]

Our research group at The Severe Weather Research Center (SWRC) is looking for motivated students interested in Large Eddy Simulations (LES) and radar remote sensing of extreme weather.

Know a qualified student? Please share! (1/2)

More Info, please see the comment section👇

[Governor Abigail Spanberger @GovernorVA]

Ramadan Mubarak to all Virginians beginning their celebrations this evening!

I’m wishing you an easy fast and a peaceful, reflective, and joyful holy month.

[United States Trade Representative @USTradeRep]

The U.S.-Bangladesh Agreement on Reciprocal Trade is creating new opportunities for American farmers and producers, expanding market access on U.S. exports ranging from soybeans and corn to civil aircraft and motor vehicles.

[NBC News @NBCNews]

A Bangladesh war crimes court sentences ousted Prime Minister Sheikh Hasina to death, concluding a monthslong trial that found her guilty of ordering a deadly crackdown on a student-led uprising last year. https://t.co/DEtzHhYaHq

[MyRadar Weather @MyRadarWX]

LOOK AT THESE! You've probably never heard of "mesovortices," but the eyes of major/intensifying hurricanes, like Category 5 Melissa, actually contain addition, smaller whirls a few miles across.

Mesovortices are a few miles across; they form as a way to balance an extreme discontinuity in angular momentum. In the buzzsaw-like eyewall – that ring of winds spiraling around the eye – there's an incredible amount of extreme wind and "angular momentum." But in the eye, there's hardly any – the air is calm.

That means the eyewall "chafes" against the calm eye. Since the atmosphere is a fluid, that chafing pinches off into eddies and vortices.

Think about when you're kayaking or canoeing through a pond. You might notice a few whirlpools shedding off your oar as the moving oar sweeps through the stationary water. A similar premise exists here.

In this case, the atmosphere handles the transition from the eyewall to the eye by having some of the fluid "curl back" on itself, forming 4, 5 to 6 smaller "mesovortices." This eye exhibited a "wavenumber 5" pattern, meaning there were five mesovortices.

The mesovortices often contort the inner edge of the eyewall into a wonky "sawtooth" pattern. That means that, if you stand right near the interface, you'd have about 5 minutes of "in... out... in... out" where, despite being basically in the eye, ebbs of the eyewall could still swing through and bring you a sudden, extreme gust.

Welcome to the magic of fluid dynamics in the atmosphere.

[Noah Bergren @NbergWX]

Major kudos to the brave men and women of the Hurricane Hunters. They risk their lives flying into these high end hurricanes, for meteorological research, analysis, forecasting, and ultimately saving lives.

I love the weather more than anything. But not sure I stomach this. You?

[Shajedul Karim, Ph.D. @shajiddreams]

@sajeebwazed Criminal!!!! who did crimes against humanity in Bangladesh! According to UN, more than 1400 people including children were killed under her leadership during July-August in 2024. She must face trial before saying anything else

[Sam Brandt @sambrandt99]

892 mb at sea level is absurd. You would need to climb to 1.1 km (3600 ft) above sea level to experience the same pressure on a normal day. A slab of air 1.1 km thick was essentially removed from the column above the Melissa’s center.

[Martin Bauer @martinmbauer]

Short explanation of the physics Nobel Prize 2025

In classical mechanics you can know where a particle is and its momentum at the same time. In Quantum mechanics you can't. All information is in the wavefunction. Even if a particle is trapped, part of the wavefunction..

🧵1/7

[The Nobel Prize @NobelPrize]

This year’s chemistry laureate Omar Yaghi was born in Amman, Jordan, in 1965 to parents who were refugees from Palestine. When we spoke to him he shared his story:

“I grew up in a very humble home, we were a dozen of us in one room, sharing it with the cattle that we used to raise. I was born in a family of refugees, and my parents could barely read or write. My father finished sixth grade and my mother couldn’t read or write. It’s quite a journey. Science allows you to do it. Science is the greatest equalising force in the world.

Smart people, talented people, skilled people exist everywhere. That’s why we really should focus on unleashing their potential through providing them with opportunity.”

Today Yaghi shared the 2025 Nobel Prize in Chemistry with Susumu Kitagawa and Richard Robson for their work developing metal–organic frameworks.

Learn more about the prize: https://t.co/4nmszg1ZIR

[Andy Hazelton @AndyHazelton]

Most models are coming into agreement on a notable coastal storm next weekend along the Eastern Seaboard, forced by a strong upper trough. You could maybe make an argument for some subtropical characteristics, but it looks pretty frontal in current modeling. Regardless, this could be a threat for coastal flooding and nasty weather along the East Coast. Something to watch as we go through the week.

[Colin McCarthy @US_Stormwatch]

Unbelievable satellite imagery of the dual tropical cyclones off the East Coast of the US, Major Hurricane Humberto and Imelda.

Imelda’s cloud shield stretches over 1,400 miles, covering nearly the entire East Coast.

[Sam Brandt @sambrandt99]

I'm expecting a fantastic sunset this evening across large swaths of WV, PA, and NY thanks to an expansive cirrus deck from tropical outflow. Get your cameras ready!

[Shajedul Karim, Ph.D. @shajiddreams]

@Cricknight07 WT20 2024
Hairs Rauf vs USS - failed

[Shajedul Karim, Ph.D. @shajiddreams]

@iihtishamm He is the prime example of ruining the game as always he does!!! He should be kicked out from the team