Featured Pathways

More pathways

The Science of Climate Change

Climate change is no longer a distant threat or just a possibility, it is now a reality for all of us. In this pathway, Kevin Trenberth, a renowned climatologist, delves into the science behind climate change. He first introduces the climate system, its main components and forces.

Tackling the Plastic Crisis

Plastic pollution is by far the biggest threat to our oceans and this remains an incredibly tough problem to solve. Plastic credits could potentially serve as one of the much needed solutions for this crisis.

More pathways

Ready to get started?

PLANS & MEMBERSHIP

Our Platform

Expert led content

+1,000 expert presented, on-demand video modules

Learning analytics

Keep track of learning progress with our comprehensive data

Interactive learning

Engage with our video hotspots and knowledge check-ins

Testing & certification

Gain CPD / CPE credits and professional certification

Managed learning

Build, scale and manage your organisation’s learning

Integrations

Connect Sustainability Unlocked to your current platform

Featured Content

More featured content

The Scale of the Net Zero Challenge

The price of meeting net zero is estimated to be between $100-150 trillion over the next 30 years. Regardless of this cost, we need to reach net zero before climate change does irreversible damage to the environment and the economy.

ESG, Sustainability and Impact Jargon Buster

ESG, sustainability, impact… they all just mean green, right? Not quite. Despite being used often interchangeably, there are distinct differences between these terms.

More featured content

Ready to get started?

Featured Pathways

More pathways

The Science of Climate Change

Climate change is no longer a distant threat or just a possibility, it is now a reality for all of us. In this pathway, Kevin Trenberth, a renowned climatologist, delves into the science behind climate change. He first introduces the climate system, its main components and forces.

Tackling the Plastic Crisis

Plastic pollution is by far the biggest threat to our oceans and this remains an incredibly tough problem to solve. Plastic credits could potentially serve as one of the much needed solutions for this crisis.

More pathways

Ready to get started?

PLANS & MEMBERSHIP

Our Platform

Expert led content

+1,000 expert presented, on-demand video modules

Learning analytics

Keep track of learning progress with our comprehensive data

Interactive learning

Engage with our video hotspots and knowledge check-ins

Testing & certification

Gain CPD / CPE credits and professional certification

Managed learning

Build, scale and manage your organisation’s learning

Integrations

Connect Sustainability Unlocked to your current platform

Featured Content

More featured content

The Scale of the Net Zero Challenge

The price of meeting net zero is estimated to be between $100-150 trillion over the next 30 years. Regardless of this cost, we need to reach net zero before climate change does irreversible damage to the environment and the economy.

ESG, Sustainability and Impact Jargon Buster

ESG, sustainability, impact… they all just mean green, right? Not quite. Despite being used often interchangeably, there are distinct differences between these terms.

More featured content

Ready to get started?

Ready to get started?

Introduction to Greenhouse Gas Emissions

Introduction to Greenhouse Gas Emissions

Gordon Rowan

20 years: Origination and Credit Structuring

In this video, Gordon introduces the Keeling curve, the concentration of carbon in the atmosphere, and the idea that market-based tools such as cap and trade can help us to reorganise our economies to reduce the amount of CO2 being emitted into the atmosphere.

In this video, Gordon introduces the Keeling curve, the concentration of carbon in the atmosphere, and the idea that market-based tools such as cap and trade can help us to reorganise our economies to reduce the amount of CO2 being emitted into the atmosphere.

Speak to an expert

Speak to an expert today to access this and all of the content on our platform.

Introduction to Greenhouse Gas Emissions

7 mins 25 secs

Overview

By absorbing solar energy and reducing the speed at which it escapes into space, greenhouse gases warm the Earth by insulating it like a blanket. The warming of the Earth is influenced differently by various GHGs. The Global Warming Potential is a metric used to compare GHGs to the amount of energy that one tonne of CO2 will absorb over a century ("GWP"). Although CO2 has a GWP of 1 by definition, it can linger in the atmosphere for a much longer period of time than 100 years. The worst are chlorofluorocarbons (CFCs) and their relatives, whose GWPs are thousands or tens of thousands of times more than CO2 equivalent. This is due to the fact that they significantly capture more heat than CO2 for a given mass.

Key learning objectives:

  • Understand what a concentration of 416 ppm mean

  • Understand the concept of greenhouse gases

  • Understand the government's initiatives to reduce carbon emissions

Speak to an expert

Speak to an expert today to access this and all of the content on our platform.

Summary

​​What does a concentration of 416 ppm mean?

When measuring gases (like carbon dioxide), the term "concentration" is used to describe the proportion of a gas by volume in the air. One part per million (by volume) is equal to one volume of a given gas in a million volumes of air:

So, here it’s:    416 / 1,000,000

How greenhouse gases warm the earth

  • Absorbing energy from the sun
  • Slowing the rate at which the energy escapes to space

What are the ways in which greenhouse gases differ from each other?

The two main ways in which these gases differ from each other are their ability to:

  • Absorb energy (radiative efficiency)
  • How long they stay in the atmosphere (lifetime)

How long do greenhouse gases stay in the air?

CO2 gas can actually stay in the atmosphere for thousands of years rather than 100 years

  • Methane gas has a GWP of 28 to 36 times that of the CO2 equivalent. This is because methane absorbs much more energy than CO2 - but lasts about 10 years in the atmosphere.

  • Nitrous Oxide has a GWP of 265- 298 times the CO2 equivalent and remains in the atmosphere for more than 100 years on average.

  • The three main categories of Chlorofluorocarbons and their cousins are the worst - with GWPs thousands or tens of thousands of times the CO2 equivalent. This is because for a given mass, they trap substantially more heat than CO2.

Speak to an expert

Speak to an expert today to access this and all of the content on our platform.

Gordon Rowan

Gordon Rowan

Gordon Rowan is Director of Origination and Credit Structuring at Alpha Real Capital LLP where he sits in the Alternative Credit Strategies and Long Income teams. Previously he was Head of Structured and Sustainable Finance at Respira International, which trades and invests in voluntary carbon from natural capital projects, founder of Walbrook Capital Partners and a Director at Ambac Assurance UK. He has guest lectured at Bayes Business School and University College London, where he is an Honorary Research Associate at the Bartlett School of Sustainable Construction. Gordon was educated at Trinity College Dublin, University College Dublin and the UCD Michael Smurfit Graduate School of Business.

There are no available videos from "Gordon Rowan"