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Visualizzazione post con etichetta climate. Mostra tutti i post
Visualizzazione post con etichetta climate. Mostra tutti i post

sabato 5 agosto 2023

# gst: tipping in a low-dimensional model of a (tropical) cyclone.


 <<Tipping is the rapid, and often irreversible, change in the state of a system [Ashwin P. et al (2017)] >> 

AA << present a case study of both rate and noise-induced tipping between the stable states, relating to the destabilization or formation of a tropical cyclone. While the stochastic system exhibits transitions both to and from the non-storm state, noise-induced tipping is more likely to form a storm, whereas rate-induced tipping is more likely to be the way a storm is destabilized, and in fact, rate-induced tipping can never lead to the formation of a storm when acting alone. For rate-induced tipping acting as a destabilizer of the storm, a striking result is that both wind shear and maximal potential velocity have to increase, at a substantial rate, in order to effect tipping away from the active hurricane state. For storm formation through noise-induced tipping, (AA) identify a specific direction along which the non-storm state is most likely to get activated. >> 

Katherine Slyman, John A. Gemmer, et al. Tipping in a Low-Dimensional Model of a Tropical Cyclone. arXiv: 2307.15583v1 [math.DS]. Jul 28, 2023.
 
Also: vortex, instability, noise, in https://www.inkgmr.net/kwrds.html

Keywords: gst, climate, storm, cyclone, vortex, noise, tipping, noise-induced tipping



mercoledì 20 maggio 2020

# gst: as a Lorenz's butterfly, even small disturbances can trigger catastrophic storms

<< meteorologists still have questions about how hurricanes develop. Now, Florida State University researchers have found that even the smallest changes in atmospheric conditions could trigger a hurricane, >>

Researchers find even small disturbances can trigger catastrophic storms. Florida State University. May 13, 2020.


Jacob D. Carstens,  Allison A. Wing. Tropical Cyclogenesis From Self‐Aggregated Convection in Numerical Simulations of Rotating Radiative‐Convective Equilibrium. Journal of Advances in Modeling Earth Systems. Vol 12, Issue 5. doi: 10.1029/ 2019MS002020. Apr 24, 2020.


Also

Edward Lorenz. Deterministic nonperiodic flow. Journal of Atmospheric Sciences. Vol.20 130—141. 1963. in:  Lynn M. Resler. Edward N Lorenz’s 1963 paper, “Deterministic nonperiodic flow”, in Journal of the Atmospheric Sciences, Vol 20, pages 130–141: Its history and relevance to physical geography. Progress in Physical Geography: Earth and Environment. Vol 40 issue 1,  175-180. doi: 10.1177/ 0309133315623099. Jan 21, 2016. 


giovedì 20 febbraio 2020

# life: the fate of humans and insects intertwine

<< The fate of humans and insects intertwine, especially through the medium of plants. >>

Michael J.Samways, Philip S.Barton, et al. Solutions for humanity on how to conserve insects. Biological Conservation. Volume 242, 108427,  Review. Feb 9, 2020.

https://www.sciencedirect.com/science/article/pii/S0006320719317793

Damian Carrington. Fates of humans and insects intertwined, warn scientists. Experts call for solutions to be enforced immediately to halt global population collapses. Feb 20, 2020.

https://www.theguardian.com/environment/2020/feb/20/fates-humans-insects-intertwined-scientists-population-collapse

Also

the beetle Carabaeus lamarcki, dancer and sky analyzer.  May 14, 2016.

https://flashontrack.blogspot.com/2016/05/s-behav-beetle-carabaeus-lamarcki.html