Each month, 12 climate indices form a covariance matrix — a point on SPD(12). When the geodesic distance between consecutive months spikes above 2σ, a regime transition is detected. The globe shows the corresponding SST anomaly pattern.
Colored dots show sea surface temperature anomalies. Red = warmer than the 30-year mean, blue = cooler. During El Niño, the tropical Pacific lights up red; during La Niña, it turns blue.
Curved lines connect climate indices that are strongly correlated. Cyan = positive (move together), red = inverse (one rises, other falls). More arcs = more globally coupled the climate state is.
The Riemannian distance between this month's covariance matrix and last month's on SPD(12). Large jumps mean the statistical relationships between indices changed suddenly — a regime transition.
Live values of 12 NOAA climate indices. Cyan bars = positive anomaly, red bars = negative. Watch Niño3.4 and SOI move in opposite directions — that's the ENSO oscillation.
Click any point to jump the globe to that month. Diamond markers show detected regime transitions. Red dashed line = 2σ threshold.
Mercator projections showing how the SST pattern changed at each detected regime transition. These are the moments where geodesic distance spiked above 2σ.