Tootfinder

Is downward conduction possible in turbulent convection driven by internal heating?
Ali Arslan, Giovanni Fantuzzi, John Craske, Andrew Wynn
https://arxiv.org/abs/2402.19240

Is downward conduction possible in turbulent convection driven by internal heating?
Consider an internally heated fluid between parallel plates with fixed thermal fluxes. Can the upward convective heat transport due to turbulence be so effective that the top plate is on average hotter than the bottom one, causing a downward conductive heat flux? For a large class of heat sources that vary in the direction of gravity, we prove that the average temperature difference between the bottom and top plates satisfies $\langle δT \rangle_h \geq σR^{-1/3} - μ$, where $R$ is a `flux' R…

There is nothing more annoying to a data nerd like me than GAPS. No gaps. There must never be gaps!
BCHydro kWh usage in our home since we moved iin in2005... and I have two gaps. It bugs me!
I'm also slightly intrigued by the difference between this March and past March’s. We're very high this year. This is also the first spring in awhile with no solar panels, one was stolen and I disconnected the other.
Also, the weather has been weird. I will find the data and …

The „best“ Podcast in the Universe 1646:

-very short donation list (again) 🤔
-Shitting on @… for his (bad🤔) music taste
-@… is on a downward spiral
-hate listeners are welcome
-Adam does …

30 years ago today (Feb 25, 1994), nine inch nails released the first single from The Downward Spiral, 'March of the Pigs'. I had this record pretty soon after it came out and I played it nonstop. World changing. Step right up.
https://youtu.be/GHPkJkBS1vE?si=QRdLvYV6ihI…

Saddened, but not surprised
https://www.gitclear.com/coding_on_copilot_data_shows_ais_downward_pressure_on_code_quality

Meridional Circulation Streamlined
Deepayan Banik, Kristen Menou
https://arxiv.org/abs/2402.16988 https://arxiv.org/pdf/2402.16988

Meridional Circulation Streamlined
Time-dependent meridional circulation and differential rotation in radiative zones are central open issues in stellar evolution theory. We streamline this challenging problem using the 'downward control principle' of atmospheric science, under a geostrophic f-plane approximation. New insights emerge from this simplified approach, using pressure as the vertical coordinate. We recover the known stellar physics result that the steady-state meridional circulation decays on the length scale (N/f sqr…

Weekend #Plankton #Factoid 🦐🦠
In marine systems where high nutrients lead to #hypoxia (low oxygen), it is commonly thought animals must avoid these zones - wrongly. Many types of

Saddened, but not surprised
https://www.gitclear.com/coding_on_copilot_data_shows_ais_downward_pressure_on_code_quality

Perfect weather for socks and sandals. The perfect feetwear
#FightMe
(pic from yesterday)

Wave Reflection in the Solar Atmosphere
Varun Chaturmutha, Bernhard Fleck, Stuart Jefferies
https://arxiv.org/abs/2403.18988 https://…

Wave Reflection in the Solar Atmosphere
We present evidence supporting wave reflection in the lower solar chromosphere based on helioseismic analysis of multi-height Doppler data. This evidence is derived through a wave propagation model that incorporates both upward- and downward-traveling (reflected) waves. Moreover, we find that the height of the reflecting region varies with magnetic field strengths in a way that suggests a connection with the the plasma $β\sim1$ region. We measure an effective reflection coefficient of $13\,\%$…