Observer Review

The Observer Review is a monthly publication that discusses the main scientific findings surrounding space weather.

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A long meteorological record from Japan ties the chain together: solar forcing shapes low frequency atmospheric patterns, those patterns favor deep cyclones, and those cyclones can act as triggers for earthquakes in already stressed crust. Weather as a lever.

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Separate studies on Peru and Haiti show a different kind of pre earthquake signal. Total electron content drops, wave like disturbances appear in the ionosphere, and matching anomalies show up at conjugate magnetic points days to hours before rupture.

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In Central Asia, a stalagmite record from Talisman Cave shows that multidecadal wet and dry cycles track solar activity and North Atlantic patterns. When the Sun dims a little and the westerlies shift, rivers shrink, grasslands retreat, and societies adapt.

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Read more at https://t.co/c6hxmp48wJ

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Tibet tells a different Sun story. From 1978 to 2018, temperatures on the plateau pulse in rhythm with sunspot cycles. The cold season swings hardest, suggesting that thin air and snowpack make this region especially sensitive to small changes in solar input.

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Read more at https://t.co/c6hxmp48wJ

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A clinical study of patients with autonomic nervous system disorders shows that during strong geomagnetic storms, their heart rate variability drops and estimated stroke risk rises. The body feels the storm.

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One detail from the displacement paper: there is a consistent two to three month lag between peaks in solar activity and spikes in weather driven movement. The Sun flickers, the atmosphere rearranges, and only after that do people begin to move.

https://t.co/c6hxmp48wJ

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Between 2008 and 2023, Southern Europe saw over 830,000 internal displacements from natural hazards. Two standout years, 2014 and 2023, sit inside high solar activity phases. Balkan floods, Greek fires, Italian and Spanish storms all line up with the cycle
https://t.co/c6hxmp48wJ

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New research from Southern Europe finds a clear signal: weather-related displacement rises during periods of heightened solar activity. When the Sun becomes restless, storms, floods, and fire weather do too. And people move.

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A sneak peek into our September Issue. 👀

It will be sent out this afternoon to all OR Members.

What articles are capturing your eye the most?

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Our September Issue is coming out TODAY!

Sign up and reiceve your first month free: https://t.co/IhTHc4KXK2

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Available at https://t.co/eHXvRAoV89

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Just Released! Our Observer Review Special Issue.

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Stealthy volcanoes like Merapi, Stromboli, and Popocatépetl can erupt silently due to warm, flexible rock that hides warning signs. Researchers now know that chamber size, magma flow rate, and temperature all help these eruptions sneak past detection.

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Some volcanoes erupt with almost no warning. A new study reveals why: small amounts of magma in small, pre-warmed chambers can trigger "stealth eruptions" without ground shaking or seismic alerts. Mount Veniaminof in Alaska is a textbook example. 🌋

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In a study discussed in our July Issue, it shows solar-driven relativistic electron precipitation (REP) boosts NOx & HOx in the upper atmosphere, slashing ozone by up to 17%—and not just in winter.

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Did you know?

Blue auroras are rare and are tied to molecular nitrogen and typically require direct overhead viewing.

Far from the usual green we see!

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A blue aurora was seen over central France on the night of Sept 24–25, 2023, a phenomenon usually reserved for the Arctic. Captured at 48.3°N near Chartres, the vivid blue glow appeared without the usual green

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Geomagnetic jerks are normal. But in a time of magnetic pole drift, they're not just routine, they're warnings.

The 2024 pulse was minor.

The next one is due in 2027–2028, right as the sun enters solar minimum.