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Friday, June 6, 2025

The Stadium Wave - a hypothesized multidecadal climate variability pattern proposed by climate scientist Judith Curry

 The stadium wave refers to a hypothesized multidecadal climate variability pattern proposed by climate scientist Judith Curry and others. It describes a propagating, hemispheric-scale oscillation in climate variables like temperature, sea ice, and atmospheric circulation, primarily in the Northern Hemisphere. The term draws an analogy to a "wave" moving through a stadium crowd, where different regions experience synchronized climate anomalies that shift over time.

Key Features of the Stadium Wave:
  1. Multidecadal Oscillation: The stadium wave operates on a roughly 60- to 80-year cycle, involving a sequence of climate shifts that propagate across various regions and systems.
  2. Interconnected Systems: It involves interactions among major climate systems, such as:
    • Oceanic oscillations: Like the Atlantic Multidecadal Oscillation (AMO), Pacific Decadal Oscillation (PDO), and North Atlantic Oscillation (NAO).
    • Atmospheric patterns: Jet stream behavior and atmospheric pressure systems.
    • Cryosphere: Sea ice extent in the Arctic and Antarctic.
  3. Phased Propagation: The wave manifests as a sequence where anomalies (e.g., warm or cool phases) in one region or system lead or lag those in others, creating a coordinated, wave-like progression. For example, a warm AMO phase might precede changes in Arctic sea ice or Eurasian temperatures.
  4. Natural Variability: The stadium wave emphasizes internal climate variability rather than external forcings (like greenhouse gases or solar activity), though it may interact with them.
Mechanism:
The stadium wave suggests that feedback loops between ocean, atmosphere, and ice create a self-sustaining cycle. For instance:
  • Changes in ocean temperatures (e.g., AMO shifting to a warm phase) influence atmospheric circulation.
  • This alters wind patterns, which affect sea ice distribution.
  • Sea ice changes, in turn, influence ocean heat release, feeding back into the system.
Evidence and Research:
  • The concept was introduced in a 2013 study by Marcia Wyatt and Judith Curry, published in Climate Dynamics. They analyzed historical climate data and identified a signal where anomalies in temperature, sea ice, and other variables appeared to propagate across the Northern Hemisphere in a predictable sequence.
  • The stadium wave is supported by observations of synchronized multidecadal patterns in paleoclimate records, historical temperature data, and climate model simulations, though its exact drivers remain debated.
  • It has been used to explain periods of accelerated warming or cooling, such as the mid-20th century cooling period or the early 21st-century Arctic sea ice decline.
Implications:
  • Climate Prediction: The stadium wave suggests that natural variability could play a significant role in short- to medium-term climate trends, potentially complicating attribution of changes to human activity.
  • Arctic Sea Ice: The wave may contribute to periods of rapid ice loss or recovery, as seen in recent decades.
  • Controversy: Some climate scientists are skeptical, arguing the signal may be an artifact of data analysis or that it’s overshadowed by anthropogenic forcing. Others see it as a useful framework for understanding internal variability.
Limitations:
  • The stadium wave is primarily a descriptive model based on observed correlations, and its mechanistic underpinnings are not fully understood.
  • It focuses on the Northern Hemisphere, with less clarity on its global applicability.
  • Distinguishing the wave’s signal from anthropogenic climate change or other forcings remains challenging.

Thursday, May 29, 2025

Ashli Babbitt still not found

 Update on previous post

Like so many articles, it's not that it wasn't created, edited, made into information, it is that the censors at Wikipedia have a tactic for deleting articles, calling it a redirect. 


When an editor can't just delete, they do a redirect, which deletes the article, but leaves all the edits, so you can actually watch how it works by going back in time.


Tuesday, May 13, 2025

Shallow water waves, deep water waves

 

Shallow water waves are waves that occur in water where the depth is less than about half the wavelength of the wave. In this context, the water depth significantly influences the wave's behavior, causing the wave speed to depend primarily on the depth rather than the wavelength, unlike deep water waves. 

 Of course the term is used on Wikipedia, it's that there is no entry for it.  

And of course there is no explanation of deep water waves.

A deep water wave is a wave that occurs in water where the depth is greater than about half the wavelength of the wave. In this context, the water depth has minimal influence on the wave's behavior, and the wave's characteristics are primarily determined by its wavelength and frequency. 
The entry for "tides" never tells you a tide is a shallow water wave.  Which is just so Wikipedia
A tide can be considered a shallow water wave. Tides are extremely long-wavelength waves driven by the gravitational forces of the moon and sun, and their behavior is influenced by the ocean's depth, which is typically much less than their wavelength (often thousands of kilometers). 

I know full well that if I try to add those entries, and edit the tide article, there will be objections and trouble lol

Which is why I started this blog 

You can quickly find out of something is not found on Wikipedia by doing a Google search.  If there is an article it will show up at the top of the search.

Coastal Wiki has info on shallow water waves, but no article.  I'm not sure if Wikipedia allows another Wiki to be used as a source.