Global Change: Industrial Revolution and Greenhouse Gas Emissions

Flashcards providing definitions of key terminology, historical phases, energy consumption figures, greenhouse gas trends, and multi-variable indicators from the lecture on the Industrial Revolution and Global Change.

Industrial Revolution

The historical era beginning in the 18th century during which Western cultures transitioned away from a solely agrarian society to one based on industry and machinery, accompanied by technological, socioeconomic, and cultural changes.

Spread of the Industrial Revolution

The geographic progression of industrialization that originated in England in the 1840s and gradually swept eastward across Continental Europe and into the United States through the 1880s.

The "Big Three" Energy Sources

Coal, oil, and natural gas; the primary fossil fuels that superseded biomass burning following the Industrial Revolution.

Industry 1.0 (Mechanization)

The first phase of the Industrial Revolution (late 18th to early 19th century) defined by steam engines, mechanical production, substitution, and the development of industrial cities.

Industry 2.0 (Mass Production)

The second phase of the Industrial Revolution (late 19th to mid-20th century) driven by electricity, division of labor, scale economies, and industrial regions.

Industry 3.0 (Automation)

The industrial phase occurring in the second half of the 20th century that introduced electronics and information technologies, focusing on input costs and global production networks.

Industry 4.0 (Robotization)

The contemporary phase of the Industrial Revolution in the early 21st century characterized by cyber-physical systems, added value, and global value chains.

Quad

A unit of energy equal to $10^{15}\text{ BTU}$ or $2.93 \times 10^{11}\,\text{kWh}$, commonly used to quantify large-scale national energy consumption.

British Thermal Unit (BTU)

A unit of energy defined as the amount of heat required to raise the temperature of 1 pound of water by $1^\circ\text{F}$.

Rejected Energy

Energy lost or wasted through inefficiencies without providing useful work, making up $66\%$ ($62.27\,\text{Quads}$ out of $94.6\,\text{Quads}$) of total energy consumption in the United States and $58\%$ in Iowa in 2024.

IPCC Statement on Human Influence (AR6 WGI A.1)

The scientific finding that human activities have unequivocally warmed the atmosphere, ocean, and land, driving rapid and widespread changes in the cryosphere and biosphere.

Global Land and Ocean Carbon Uptake

Natural carbon sinks on land and in oceans that have continuously absorbed a near-constant proportion of roughly $56\%$ of human-caused $CO_2$ emissions annually over the past six decades.

Global Fossil $CO_2$ Emissions Shocks

Sharp historical declines in annual global fossil fuel emissions linked to geopolitical and economic crises, notably the First and Second Oil Crises, the Dissolution of the Soviet Union ($-3.1\%$), the Global Financial Crisis ($-1.4\%$), and the COVID-19 pandemic ($-5.2\%$).

Top Six $CO_2$ Emitters (2021)

The six nations and regions responsible for $67\%$ of all global emissions in 2021: China ($31\%$), the United States ($14\%$), the European Union ($8\%$), India ($7\%$), Russia ($5\%$), and Japan ($3\%$).

Cumulative Historical Fossil $CO_2$ Emissions

The total accumulation of fossil $CO_2$ released into the atmosphere since 1850, led by the United States and the European Union, illustrating that atmospheric concentrations reflect cumulative historical burning rather than present-day output alone.

Per Capita Fossil $CO_2$ Emissions

The average mass of emissions generated per person annually, led historically by the United States ($14.9\,\text{tonnes/person}$ in 2021), followed by Russia ($12.1$), Japan ($8.6$), China ($8.0$), the EU27 ($6.3$), the world average ($4.7$), and India ($1.9$).

Atmospheric Carbon Dioxide ($CO_2$) Concentration

The mole fraction of carbon dioxide in the atmosphere, which reached an annual average of $410\,\text{ppm}$ in IPCC AR6 and increased to $429.12\,\text{ppm}$ by July 2026 at Mauna Loa Observatory.

Atmospheric Methane ($CH_4$) Concentration

The global monthly mean mole fraction of methane, reported at $1866\,\text{ppb}$ in IPCC AR6 and rising to $1937.59\,\text{ppb}$ by April 2026.

Atmospheric Nitrous Oxide ($N_2O$) Concentration

The global monthly mean mole fraction of nitrous oxide, reported at $332\,\text{ppb}$ in IPCC AR6 and increasing to $339.78\,\text{ppb}$ by April 2026.

Empirical Indicators of Climate Change (1880–2021)

Observations documenting widespread human-driven climate changes, including increasing trends in surface temperatures, ocean heat content, greenhouse gas levels, sea level, and humidity, matched with decreasing trends in sea ice extent, ocean pH, stratospheric temperature, and glacier/ice sheet mass balances.