Map of mean sea level (MSL) pressure

Description

The visualization presents a geospatial map of mean sea level (MSL) pressure across the North Atlantic and European region, spanning longitudes from -25°E to 45°E and latitudes from 30°N to 72°N. The data, derived from a numerical weather prediction model run initialized at 12Z on December 2, 2025, and valid for +0 hours, is displayed using filled contours with a 'coolwarm' colormap, where cooler (blue) tones represent lower pressures and warmer (red) tones indicate higher pressures. Black isolines are overlaid at 4 hPa intervals, with labels for clarity. Gaussian smoothing (σ = 1.5 grid points) is applied to reduce noise and enhance pattern visibility. The plot reveals a typical mid-latitude pressure distribution, with a prominent subtropical high-pressure system evident in the southwestern portion of the domain (around 30°N, -25°W), characterized by pressures exceeding 1026 hPa. Pressure gradients suggest a ridge extending northeastward, potentially influencing weather patterns such as clear skies under the high and possible cyclonic activity to the north. This configuration is significant for understanding synoptic-scale atmospheric circulation, forecasting weather events like storms or stable conditions, and validating model performance against observations.

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