Atmospheric & Meteorological Phenomena

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Abstractions about atmospheric moisture, energy, and wind phenomena — thermodynamic diagrams and indices like the emagram, aridity index, and moist static energy, convective storm features such as dry thunderstorms, gustnadoes, and sting jets — and diagnostic tools like the wind rose.

16 abstractions in this family — domain-specific abstractions that sit near one another in structural-signature space (k-means over structural-signature embeddings). Each is shown with its short description.

• Aridity Index — A declared climatic index that compares long-run water supply with atmospheric or ecological water demand to classify the persistent moisture deficit of a location.
• Climate-Driven Water-Cycle Intensification — The water cycle is essential to life on Earth and plays a large role in the global climate system and ocean circulation.
• Diurnal cycle — A diurnal cycle (or diel cycle) is any pattern that recurs every 24 hours as a result of one full rotation of the planet Earth around its axis.
• Dry Line — A dry line is a moving low-level atmospheric boundary defined by a sharp horizontal moisture contrast between dry and moist air masses, with storm effects conditional on local dynamics.
• Dry thunderstorm — A dry thunderstorm is a thunderstorm that produces thunder and lightning, but where all or most of its precipitation evaporates before reaching the ground.
• Emagram — An emagram is one of four thermodynamic diagrams used to display temperature lapse rate and moisture content profiles in the atmosphere.
• Gustnado — A gustnado is a brief, shallow surface-based vortex which forms within the downburst emanating from a thunderstorm.
• Hydrometeor Loading — Hydrometeor loading is the negative contribution of suspended or falling condensate mass to an air parcel's vertical buoyancy budget.
• Lifting Condensation Level — The level at which an unsaturated air parcel lifted dry adiabatically first reaches saturation with respect to liquid water and becomes able to form cloud droplets.
• Moist static energy — The moist static energy is a thermodynamic variable that describes the state of an air parcel, and is similar to the equivalent potential temperature.
• Moisture advection — The horizontal transport tendency or flux of atmospheric water vapor by the wind, represented locally as −V·∇q (or an equivalent moisture variable) and in budgets through vertically integrated vapor flux and convergence.
• Pulse storm — A pulse storm is a single cell thunderstorm of substantial intensity which only produces severe weather for short periods of time.
• Reference Evapotranspiration Estimation — A weather-based calculation of evapotranspiration rate for a declared well-watered reference surface and period, before crop-specific conversion.
• Sting jet — A sting jet is a narrow, transient and mesoscale airstream that descends from the mid-troposphere to the surface in some extratropical cyclones.
• Sudestada — Sudestada (Southeast blow) is the Argentine and Uruguayan name for a climatic phenomenon common to the Río de la Plata (an estuary formed by the combination of the Uruguay River and the Paraná River on the southeastern coastline of South America) and its surrounding region.
• Wind rose — A wind rose is a diagram used by meteorologists to give a succinct view of how wind speed and direction are typically distributed at a particular location.