Flight: TU-Chalmers 🇸🇪

Calculate passenger flight emissions with the TU-Chalmers methodology from Chalmers University of Technology, which accounts for booking class, scheduled or charter flights and the use of biofuels.

type flightmethodology TU-CHALMERSTravel and Climate methodology report, version 4.1Supports audit mode

The TU-Chalmers methodology comes from research at Chalmers University of Technology in Sweden and focuses on improving the precision of greenhouse gas (GHG) calculations for air travel. It considers class-specific emissions, reflecting differences in space usage and the associated fuel allocation, and supports assessments of flights that use biofuels.

Sample requests

Send a quote while the traveller is still choosing a flight, then repeat the call with audit set to true once the booking is final. The body is otherwise identical.

{
  "expand": ["items"],
  "items": [{
    "audit": false,
    "type": "flight",
    "methodology": "TU-CHALMERS",
    "external_reference": "test_1",
    "number_of_travelers": 1,
    "origin": "FRA",
    "destination": "JFK",
    "booking_class": "premium_economy",
    "plane_type": "scheduled",
    "biofuel": true
  }]
}

audit_for is optional

Pass the ID of an auditable entity when you calculate on behalf of that entity. Otherwise, leave it out.

Defaults

When a field is missing, SQUAKE fills it in before calculating.

Field	Default	Applies when
`plane_type`	`scheduled`	No `plane_type` is sent
`biofuel`	`false`	No `biofuel` is sent

Request fields

typestringrequired

flight

methodologystringrequired

TU-CHALMERS

originstring

IATA/ICAO airport code (MUC), UN/LOCODE for other locations (DEHAM), or latitude and longitude (+40.712,-74.006). For multi-leg trips, use routing instead.

destinationstring

Same formats as origin.

routingstring

Hyphen-separated airports for multi-leg itineraries, instead of origin and destination. See Flight: Routing (multi-leg).

distance_in_kmnumber

Overrides origin and destination. Without it, SQUAKE resolves the distance from them. With routing, it isn't used as the routed total.

booking_classenum

economy, premium_economy, business or first. Affects emissions through the space and resources allocated per passenger.

plane_typeenum

"scheduled" or "charter". Defaults to "scheduled".

biofuelboolean

Whether the flight used biofuel. Defaults to false.

number_of_travelersinteger

Minimum 1. Defaults to 1.

external_referencestring

Your identifier for the item, up to 128 characters, so you can link results to requests when you send several items.

auditboolean

Set to true to create immutable audit records for finalised calculations. Must be enabled for your account.

See every field of POST /v2/calculations in the API reference

Sample response

200 OKapplication/json

{
  "carbon_quantity": 632000,
  "carbon_unit": "gram",
  "items": [{
    "carbon_quantity": 632000,
    "carbon_unit": "gram",
    "external_reference": "test_1",
    "type": "flight",
    "methodology": "TU-CHALMERS",
    "distance": 6320.0,
    "distance_unit": "kilometer"
  }]
}

Bibliography

Methodology Report for Travel and Climate, version 4.1. Chalmers University of Technology. Read the PDF.

Flight: TU-Chalmers 🇸🇪

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Sample requests

Defaults

Request fields

Sample response

Bibliography