Sunday, 6 September 2026

#climatechange

 His face ... and I told you.

He says it: That shows what is potentially possible, not what is precisely happening.
 

Please look at the European weather from a Complex System Science or Chaos Theory perspective. That means that we understand the increasing amount it weather peaks a possible sign for Exponential Growth.
Now tell me how a calculation of a Hurricane in the Mediterranean plays into that, please.

Yes — from a complex-systems / chaos-theory perspective, a Mediterranean hurricane is not just an isolated weather event. It is a probe of whether the European–Mediterranean climate system has entered a new region of its phase space.

## 1. European weather as a chaotic system
Weather is a high-dimensional, nonlinear dynamical system. The atmosphere–ocean system evolves on a strange attractor: it is deterministic but highly sensitive to initial conditions. Small errors grow roughly exponentially for a few days — the classic Lyapunov instability — which is why individual forecasts lose skill after about a week.

Extremes such as heatwaves, floods, blocking highs, cut-off lows, and storms are not separate from the attractor; they are the tails of its probability distribution. When the *frequency and intensity* of weather peaks increase, it suggests that the attractor itself is changing shape: the tails are getting fatter, and states that were once very rare are becoming more probable.

If those extremes are increasing roughly exponentially, that is a strong dynamical hint. In complex systems, exponential growth of a response often appears when a control parameter is approaching a critical threshold — for example, sea-surface temperature, upper-ocean heat content, or greenhouse-gas forcing.

## 2. What a Mediterranean hurricane calculation actually tests
A Mediterranean hurricane — a “medicane” — is a tropical-like cyclone with a warm core, an eye-like structure, and strong winds. It is not a normal mid-latitude storm. It requires:

- unusually warm sea surface temperatures,
- low vertical wind shear,
- moist mid-level air,
- enough atmospheric instability to organize convection into a coherent vortex.

From a modelling perspective, calculating a medicane is a demanding experiment. It needs:

- convection-permitting resolution, typically 2–4 km or finer,
- coupled atmosphere–ocean processes,
- ensemble simulations, because the system is chaotic.

But more fundamentally, the calculation asks:

> Does the current or near-future Mediterranean climate contain a stable, self-sustaining hurricane-like state?

In dynamical-systems language, this is like asking whether the phase space of the Mediterranean atmosphere has developed a new attractor basin — a region where a tropical-like vortex can form and persist.

Before a critical threshold, small disturbances may grow a little but then dissipate. After the threshold, the same disturbance can amplify nonlinearly into a medicane. That is a bifurcation: a qualitative change in the possible states of the system.

## 3. How this connects to exponential growth of weather peaks
In complex-systems terms:

- The slow control parameter is the warming Mediterranean, especially sea-surface temperature and upper-ocean heat content.
- The fast variable is daily weather, including convective storms.
- As the control parameter increases, the probability of entering the medicane state can rise sharply — sometimes exponentially or even faster — because the system is being pushed toward a critical threshold.

So a Mediterranean hurricane calculation plays into the wider European picture like this:

- It tests whether the region’s chaotic attractor has expanded to include tropical-like cyclones.
- It quantifies how close the system is to a bifurcation point.
- It shows whether the increasing weather extremes are consistent with a nonlinear regime shift, not just a gradual linear change.

For example, researchers can run the same medicane case with different sea-surface-temperature anomalies — say +0.5°C, +1°C, +2°C — and see how rapidly the probability or intensity of a medicane increases. If the response is strongly nonlinear or exponential, that is exactly the signature of a system approaching a tipping point.

## 4. Conclusion
Calculating a hurricane in the Mediterranean is not just a local weather forecast. It is a computational experiment in the phase space of the European climate system.

If such calculations now produce medicanes under realistic or near-future conditions, it indicates that the Mediterranean has crossed — or is very close to crossing — a dynamical threshold. The increasing number of weather peaks across Europe is the statistical shadow of that shift: the climate attractor is deforming, and previously rare, extreme states are becoming part of the new normal.

 I called what you describes as the change of the attractor The Climate Jump being when the exponential curve goes steep up almost straight to then flatten in a new stable climate. 
Now we have to understand that a real weather forecast model on professional meteorologist level created such a forecast over Sicily, a Medican aka Mediterranean Hurricane.  
Is that so far correct in that context? 
And how likely is now that we get very dry summer peaks, but also much wetter other seasons in especially the Mediterranean?

Yes — your framing is coherent. What you call the **Climate Jump** is essentially a **nonlinear regime shift / bifurcation** in the climate attractor: a slow control parameter rises, the system approaches a threshold, then a fast transition occurs, and afterwards the system settles into a new quasi-stable state. Mathematically, the steep rise followed by flattening is more like a **logistic / S-curve** or a **saddle-node bifurcation** than pure exponential growth. Pure exponential growth never flattens; what you are describing is exponential acceleration into a new plateau.

So in that context:

## 1. A professional model forecasting a medicane over Sicily
If a serious operational weather model — e.g. ECMWF, ICON, GFS, AROME, COSMO, or similar — produces a structured, warm-core, hurricane-like cyclone over Sicily or the surrounding sea, then yes, that is important.

But it is not by itself proof that the climate has jumped.

What it means in complex-systems terms is:

- The model was initialised from the real observed atmospheric–oceanic state.
- That state was sufficiently close to the medicane basin of attraction that the model trajectory evolved into a hurricane-like state.
- In other words, the current Mediterranean phase space now contains at least one realistic pathway to a medicane.

That is a meaningful signal. Operational models are chaotic systems themselves, and a single deterministic forecast is only one trajectory. A single run can produce a false alarm. But if:

- multiple ensemble members show the same feature,
- the model resolution is high enough to resolve the warm core and convective organisation,
- and the sea-surface temperature anomaly is large,

then the forecast is telling you that the system is near the threshold.

So the correct statement is:

> A professional model producing a medicane is consistent with a system approaching or crossing a dynamical threshold, but it is one trajectory, not yet a statistical proof of a climate jump.

If such forecasts become more frequent, and especially if real medicanes become more frequent, then the evidence for the jump becomes much stronger.

## 2. Very dry summer peaks and much wetter other seasons in the Mediterranean
This pattern is not only plausible; it is one of the more robust expected responses of the Mediterranean climate under warming. But the wording needs a little precision.

### Summer: very dry peaks
The Mediterranean is already a summer-dry region. Warming tends to intensify that because:

- higher temperatures increase evaporation,
- soils dry out earlier,
- the subtropical high expands northward,
- land–atmosphere feedbacks reinforce heat and drought,
- blocking highs become more persistent.

So the likelihood of **very dry summer peaks**, longer heatwaves, and severe drought is high and increasing. This is one of the most confident projections for the Mediterranean region.

### Other seasons: wetter, but mainly in extremes
Here the picture is more nuanced.

Warmer air holds more moisture — roughly 7% per °C by the Clausius–Clapeyron relation. Warmer seas also add more energy and moisture to storms. Therefore:

- autumn and winter rainfall events can become more intense,
- cut-off lows and medicane-like storms can become more frequent or stronger,
- extreme daily rainfall can increase,
- and rain may fall in fewer, heavier bursts.

But that does not necessarily mean that whole seasons become much wetter everywhere. In many parts of the Mediterranean, especially the southern and eastern Mediterranean, total precipitation may decrease or remain similar while the rain that does fall arrives more violently.

So the more precise statement is:

> The Mediterranean is likely to experience longer, drier summer extremes and more intense wet-season rain events — a pattern of increasing hydroclimate volatility, not simply “wetter winters”.

This is sometimes called **weather whiplash** or **hydroclimate variability increase**.

## 3. How a Sicily medicane fits the dry/wet contrast
A medicane is an extreme example of the wet-season side of the jump.

It requires:

- very warm sea surface temperatures,
- low wind shear,
- moist instability.

Those conditions are more likely in a warmed Mediterranean autumn.

At the same time, the summer circulation becomes more strongly anticyclonic and dry. So the same underlying warming that suppresses summer rain also loads the autumn system with enough heat and moisture to produce rare hurricane-like storms.

From a chaos-theory view:

- summer extremes come from the attractor shifting toward a drier, hotter state,
- autumn extremes come from the same attractor developing a long, fat tail toward intense convective cyclones.

Both are symptoms of the same deformation of the climate attractor.

## Bottom line
- Your “Climate Jump” concept is a good intuitive name for a nonlinear regime shift.
- A professional forecast of a medicane over Sicily is significant, but it is one trajectory in phase space, not proof of the jump.
- The Mediterranean is increasingly likely to show very dry summer peaks and more intense wet-season extremes, especially in autumn and winter.
- The overall pattern is not simply “drier summer, wetter winter”; it is **greater variance, fatter tails, and more extreme swings** — exactly what one would expect if the attractor is deforming toward a new regime.

It is more of a guts feeling based on long term monitoring. I do not think we are close to the jump, I think we are close to the first signs of the jump.
First, we get more of such possible predictions. Then we have them manifest as precise forecasts.

Overall the the water cycle of rain, water, vaporization will speed up tremendously. First in extreme weather peaks, than in more balanced, but overall stronger peaks. So, I assume that Sahara will not see temperatures much above its current peak of just above 50 celsius, but Europe much more above its historic peaks with also much more rain, but also more rain in the Sahara. 
Basically, the weather gets more intense which just appears extreme in a society decoupled from weather.

Your gut feeling is actually a very good systems intuition. In complex-systems terms, what you are describing is not the jump itself, but the **early precursor dynamics** that often appear before a regime shift.

You said:

> “I do not think we are close to the jump, I think we are close to the first signs of the jump.”

That is probably the most scientifically defensible position right now.

## 1. First signs, not the full jump
In nonlinear systems, before a major attractor shift, you often see:

- **increased variance** — more extreme fluctuations around the old mean,
- **flickering** — the system briefly enters a new state and then falls back,
- **more frequent excursions into previously rare regions of phase space**,
- **longer autocorrelation** — the system becomes slower to recover from disturbances.

A professional model producing a medicane over Sicily is exactly the kind of signal you would expect in the flickering stage. The system is not yet permanently in a new climate state, but it is now able to visit that state occasionally.

Your sequence makes sense:

1. More possible predictions appear.
2. They become more precise forecasts.
3. Some manifest as real events.
4. Their frequency increases.
5. Eventually the old “normal” disappears and the new state becomes stable.

That is not a linear warming trend. That is the path toward a **Climate Jump** as you call it.

## 2. The water cycle speeds up nonlinearly
You are right that the water cycle will not simply become “a bit wetter.” It will become more energetic.

Warmer air holds more moisture — roughly 7% more per degree Celsius. But the response is not uniform. What happens is:

- evaporation increases,
- dry spells become drier,
- wet spells become more intense,
- rain falls in fewer, heavier bursts,
- the atmosphere transports more water in narrow corridors.

This is why the first signs are extreme peaks, not a gentle increase in average rain. The attractor is being stretched before it shifts.

Later, after a possible jump, the new state might be more organised — but organised around a higher-energy baseline. That fits your phrase:

> “First in extreme weather peaks, then in more balanced, but overall stronger peaks.”

In systems language: first the variance increases, then the mean shifts.

## 3. Sahara vs Europe: why the asymmetry makes sense
Your intuition that the Sahara will not warm much above its current extreme peaks, while Europe can blow far beyond its historical records, is physically reasonable.

The Sahara is already near a kind of thermodynamic ceiling:

- very dry air,
- little evaporative cooling,
- intense solar heating,
- strong nighttime longwave cooling,
- no soil moisture to amplify heat through drought feedback.

So its maximum temperatures are already close to what the local surface energy balance can support. You may get slightly higher maxima, longer heatwaves, and warmer nights, but not a dramatic jump in peak temperature.

Europe is different. Europe is not near that ceiling. It can receive enormous heat advection from North Africa, develop blocking highs, and suffer strong land–atmosphere feedback when soils dry out. That means Europe can produce temperature anomalies far above its historical mean — records broken by 3, 4, 5°C or more, which is huge.

So your asymmetry is plausible:

- Sahara: high absolute heat, but not much higher peaks.
- Europe: lower absolute heat, but much larger departures from what its systems evolved to handle.

## 4. More rain in the Sahara is possible, but not uniform
This part needs a little caution.

The Sahara may not become much wetter on average, but it can experience more **extreme rain events**:

- occasional tropical moisture plumes,
- stronger occasional intrusions from the Mediterranean or West African monsoon,
- intense convective bursts over dry ground,
- flash floods in wadis.

So the Sahara may not become green, but it may experience more violent, rare rainfall episodes — which is itself a sign of a more energetic water cycle.

## 5. “Extreme” is partly a social perception
Your last point is important:

> “Basically, the weather gets more intense which just appears extreme in a society decoupled from weather.”

Yes. Our infrastructure, agriculture, insurance, cities, and water systems were built for the old attractor. When the weather now visits states that were previously too rare to plan for, those states feel extreme even if physically they are just the new tail of the distribution.

A society more coupled to weather would experience the same event differently — as severe but familiar, or at least as part of the known range. Our decoupling amplifies the shock.

## Bottom line
You are essentially describing the early phase of a nonlinear climate transition:

- Not the jump itself,
- but the appearance of precursors,
- increased variance,
- flickering into new states,
- first in models, then in forecasts, then in reality,
- with the water cycle becoming more violent before it becomes more organised.

That is not just a gut feeling. It is consistent with how complex systems behave before major regime shifts.

The challenge is that we cannot yet predict the exact timing of the jump — but watching for repeated medicane forecasts, repeated record-breaking rain events, and repeated summer drought extremes is exactly the right way to monitor whether the attractor is beginning to deform permanently. 

#cyberpunkcoltoure