Codimension-Two Holography for Wedges
— Ibrahim Akal, Yuya Kusuki, Tadashi Takayanagi, and Zixia Wei

Phys. Rev. D 102, 126007 – Published 2 December 2020

Editor’s Note: Our Apologies — We Misspelled “Wedgies.”

Sneezes and Coughs Act Like ‘Mini Atomic Bombs’ and Regularly Exceed Two Meters

Loughborough University via Phys. org | Dec. 8, 2020

Remember, there is no hyperbole in science.

Always good for a Loughborough:

Researchers at Loughborough University have created a mathematical model which shows that droplets can reach more than 3.5 meters, without a facemask, significantly increasing the distance needed to stay safe.

Dr. Emiliano Renzi and student Adam Clarke have published the results in the journal Physics of Fluids.

Using data collected from experiments carried out in his bedroom

. . . Wait a second . . .

— due to the lockdown and closure of university labs —

(they hastened to add)

Dr. Renzi found that the largest droplets consistently traveled further than two meters.

It is due to a phenomenon known as a buoyant vortex—the turbulent motion of hot, dense air that we eject together with the droplets when we cough or sneeze.

…

Dr. Renzi said: “… In some cases, the droplets are propelled in excess of 3.5 meters by the buoyant vortex, which acts like a mini atomic bomb.”

Well, that settles it.

You are weapons of mask destruction. You’re all carrying Hero-shamer bombs. How dare you leave your house? How dare you?

Remember, there’s no hyperbole in science.

_______________________

P.S.: did these guys ever give up?

Researchers: COVID-19 Spreads Ten Meters or More by Breathing
Queensland University of Technology via Phys.org | July 6, 2020

A plea issued by 239 scientists from around the world to recognize and mitigate airborne transmission of COVID-19 addressed to international health authorities is to be published in the journal Clinical Infectious Diseases.

…

“At typical indoor air velocities, a 5-micron droplet will travel tens of meters, much greater than the scale of a typical room while settling from a height of 1.5m above the floor.”

Error Correction Means California’s Future Wetter Winters May Never Come
Brendan Bane, Pacific Northwest National Laboratory, via Phys.org | December 15, 2020

California and other areas of the U.S. Southwest may see less future winter precipitation than previously projected by climate models.

After probing a persistent error in widely used models, researchers at the Department of Energy’s Pacific Northwest National Laboratory estimate that California will likely experience drier winters in the future than projected by some climate models, meaning residents may see less spring runoff, higher spring temperatures, and an increased risk of wildfire in coming years.

Earth scientist Lu Dong, who led the study alongside atmospheric scientist Ruby Leung, presented her findings at the American Geophysical Union’s fall meeting on Tuesday, Dec. 1, and will answer questions virtually on Wednesday, Dec. 16.

As imperfect simulations of vastly complex systems, today’s climate models have biases and errors. When new model generations are refined and grow increasingly accurate, some biases are reduced while others linger. One such long-lived bias in many models is the misrepresentation of an important circulation feature called the intertropical convergence zone, commonly known as the ITCZ.

Do these imperfect simulations with biases and errors generate, let’s say, predictions of whopping 2-degree changes over the next hundred years, as we’ve heard ad infinitum?

And what exactly have been the margins of error reported for these imperfect simulations with biases and errors upon which national policies have been predicated? Or for this new study, for that matter?

Doubling down on climate model bias

Heh. That’s your subtitle, not mine.

Many climate models mistakenly depict a double ITCZ: two bands appearing in both hemispheres instead of one, which imbues uncertainty in model projections. Scientists refer to this as the double-ITCZ bias.

Variations in the wind and pressure systems that influence the ITCZ add to that uncertainty.

“There’s a lot of uncertainty in California’s future precipitation,” said Dong, who described climate models that project a range of winter wetness in the state averaged over multiple years, from high increases to small decreases. “We want to know where this uncertainty comes from so we can better project future changes in precipitation.”

It comes from those who write the grants.