Atlantic Contrail Avoidance Dispatcher

Flight & Weather Profile

Scenario Presets

Airframe & Route

Selected Flight Level FL330

Ambient ISSR Humidity 118% RHi

Core Ambient Temp -54°C

Schmidt-Appleman Threshold

Critical Temp ($T_{crit}$): -48.2°C

Condition: Contrail Persistent

NAT-OTS Flight Level Cross Section (FL310 - FL410) Track Bravo | 5,540 km

Baseline FL370

Dispatched FL330

Ice-Supersaturated Region (ISSR)

Instantaneous vs 100-Yr Warming Forcing Balance Breakeven: 0.40 Years

Climate & Fuel Telemetry

Baseline Contrail

1,840km

FL370 (In ISSR)

Dispatched Contrail

120km

-1,720 km (-93%)

Fuel Penalty

+380kg

+1.12% Total Fuel

Extra CO₂ Burn

+1,200kg

3.16 kg CO₂ / kg fuel

Net Climate Forcing Reduction

87.4%

Avoids 43.2 μW/m² cirrus warming vs 5.4 μW/m² CO₂ addition

Climate Breakeven Horizon

0.40 years

Net positive climate cooling after 4.8 months

Scientific Basis: The Schmidt-Appleman Criterion determines jet exhaust saturation. When relative humidity over ice ($RHi \ge 100\%$) and $T < T_{crit}$, contrails persist and spread into artificial cirrus blankets.