From 28583d510fcf278d65f23395fdfa4c83bf0e884d Mon Sep 17 00:00:00 2001 From: Wookey Date: Wed, 26 Jun 2024 03:03:41 +0100 Subject: [PATCH] Document carbon accounting policy and process Link from Treasuring doc --- handbook/emissions.html | 92 ++++++++++++++++++++++++++++++++++++++++- handbook/treasurer.html | 2 + 2 files changed, 93 insertions(+), 1 deletion(-) diff --git a/handbook/emissions.html b/handbook/emissions.html index fa8baaf26..83b203d09 100644 --- a/handbook/emissions.html +++ b/handbook/emissions.html @@ -14,8 +14,98 @@

Expo Carbon Accounting Policy

Introduction

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Expo decided that from 2022 expo travel emissions would be calculated and offset, correspondly appearing on expo member's bills. There are a lot of wrinkles to the application of this policy, and how it is done is likely to evolve. This documents describes current policy and procedure so tha twhoever is responsible this year can implement it.

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Climate change is a big deal, and caving expeditions can have significant emissions. These were just ignored for a very long time, but following a report to the GPF in 2020 (by Wookey and Mike Butcher) expo decided (starting in 2022) to calculate emissions for the expedition and implement compulsory offsetting for attendees, as a first step to taking emissions seriously.

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Offsetting does not reduce emissions but is arguably better than nothing. The Loser expo is intrinsically relatively low-carbon (for Europeans), because caving expedition emissions are dominated by travel, and we encourage members to travel by low carbon means as much as possible. By accounting for (CO2e) emissions and charging a suitable carbon price to members it helps people to consider the full cost of their travel. + +

There are a lot of wrinkles to the application of this policy, and how it is done is likely to evolve. This page describes current policy and procedure so that whoever is responsible this year can implement it.

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Expo 2022 carbon offsetting methods

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Car calculations

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Data needed from drivers:

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Per person and per journey CO2 (kg) =

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Fuel usage (l) * fuel CO2 emissions factor (kg/l) / no. of people in car

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(CO2 emissions per litre of EU fuel: diesel = 2.617 Kg/l, petrol = 2.329 Kg/l, taken from https://www.forestresearch.gov.uk/tools-and-resources/fthr/biomass-energy-resources/reference-biomass/facts-figures/carbon-emissions-of-different-fuels/ + )

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Ferries/chunnel not accounted initially due to lack of data. See if that has changed. DFDS now (2024) have their own carbon insetting program - ask if ticket-buyers used that, to avoid double-counting.

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Additional points from 2022 experience:

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Train calculations

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Data needed:

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Methodology:

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  1. Input journey into http://ecopassenger.org/bin/query.exe/en?L=vs_uic +
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  2. Take the CO2 emissions, assuming an average load factor (normally crowded)
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Plane calculations

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Data needed:

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Methodology:

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  1. Input journey into: https://www.atmosfair.de/en/offset/flight/ +
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Bus calculations

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Data needed:

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Methodology:

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  1. Input journey into: https://scif.org.uk/web/carbon-calculator/, selecting 'bus' as travel mode
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Gear calulations

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These have not been done so far, and are hard to calculate as most manufacturers do not yet provied LCAs for their stuff, and we don't track purchase weights, but an estimate could be made from the gear/shopping lists and existing materials sources given sufficient enthusiasm.

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Sources:

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Carbon offsetting

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Sum everyone’s CO2 emissions. Input expedition’s total kg CO2 and pay at https://www.atmosfair.de/en/offset/ +

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For Bank of Expo

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Calculate every individual’s contribution to the overall expedition CO2 emissions: Individual’s CO2 (kg)/ expo’s total CO2 (kg)

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Multiply their proportion by the total sum amount paid for offsetting. Add individual costs to BoE.

diff --git a/handbook/treasurer.html b/handbook/treasurer.html index b9cc9992c..baf582983 100644 --- a/handbook/treasurer.html +++ b/handbook/treasurer.html @@ -31,7 +31,9 @@
  • Timetable of events
  • Other Tips
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  • Part 3: Travel costs
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  • Part 4: Carbon accounting procedure
  • Summary