Adiabat

About Adiabat

Adiabat is a serious, offline Skew-T log-P workbench for pilots, glider and paraglider crews, storm chasers, and forecast enthusiasts who need to read an atmospheric sounding where there is no signal.

Every number is computed on your device from real parcel theory and bundled reference data. There is no account, no subscription, and no cloud round-trip. Open the app on a plane, in a launch field, or in a dead-zone cove and it works exactly the same.

FULL SKEW-T LOG-P DIAGRAM
• Temperature and dewpoint traces on a proper skewed log-pressure grid
• Dry adiabats, moist (pseudo) adiabats, and mixing-ratio lines
• Lifted-parcel curve with shaded CAPE and CIN areas
• LCL, LFC, and EL levels marked on the diagram
• Wind barbs alongside the profile
• Touch anywhere to read pressure, temperature, and height

PARCEL THEORY DONE RIGHT
• Surface-based, mixed-layer, and most-unstable parcels
• CAPE, CIN, LCL, LFC, EL, and Lifted Index
• Virtual-temperature correction for realistic buoyancy
• RK4 integration of the moist adiabat, not lookup tables

SEVERE-WEATHER INDICES
• 0–1 km and 0–6 km bulk shear
• Storm-relative helicity (0–1 km and 0–3 km)
• Energy-Helicity Index
• 0–3 km, 700–500 hPa, and 850–500 hPa lapse rates
• Precipitable water, freezing level, K-index, Total Totals

INTERACTIVE HODOGRAPH
• Height-coloured wind trace
• Bunkers right- and left-moving storm motion
• 0–6 km mean wind and storm-relative geometry

HAZARD DIAGNOSTICS
• Airframe icing layers in the supercooled saturated range
• Near-saturation cloud layers with estimated coverage
• Plain-language convective summary

GLOBAL STATION DATABASE, BUNDLED
• Tens of thousands of surface and upper-air stations
• The IGRA radiosonde network plus ICAO/IATA airports
• Search by name or code, or find stations near you
• A locator map drawn from bundled coastline data

TERRAIN CROSS-SECTIONS
• Great-circle terrain profiles from a bundled global relief grid
• Reference heights (freezing level, LCL, EL) overlaid
• Preset mountain transects or your own coordinates

REPRESENTATIVE SOUNDINGS, EDIT YOUR OWN
• A set of real observed soundings across convective, tropical, arctic, and maritime regimes
• Build or edit any sounding level by level, entirely offline
• Export an annotated analysis as text

PRIVATE BY DESIGN
Adiabat collects nothing and sends nothing. Location, if you enable it, is used only on the device to find nearby stations and never leaves it.

Note: Adiabat’s diagnostics are advisory and are derived from a single vertical profile. They are educational and planning aids and are not a substitute for official aviation, marine, or severe-weather products.