Trinidad and Tobago's Sources of N2O Emissions
Key Insights
Industry Dominates The Profile
Trinidad and Tobago's nitrous oxide emissions are overwhelmingly industrial, accounting for roughly nine-tenths of the total over the historical record. Industrial emissions climbed steadily for decades and, since the late 2000s, have settled into a broad plateau around 1 megatonne per year. Within this stable range, year‑to‑year values have varied moderately-from about 0.8 to a bit over 1.1 megatonnes-signaling stability rather than a decisive downturn.
Agriculture And Other Sources
Agriculture makes up a modest share, under one‑tenth, with a gentle upward drift since the late 1930s. Recent levels sit around 0.15-0.2 megatonnes, showing a steady rise without large swings. "Other" sources have also inched upward since the 1960s to roughly 0.05 megatonnes, then stayed relatively steady.
Energy And Waste Are Minor
Energy‑related emissions grew from near zero in the post‑war era to peak around 0.05 megatonnes by the mid‑2010s, then edged down slightly. Waste rose gradually from minimal mid‑century levels to just over 0.02 megatonnes today. Both remain small compared with industry.
What This Means Now
The current picture is dominated by a high, mostly stable industrial contribution and a slowly rising agricultural line. To cut national nitrous oxide, the key is to bend the industrial plateau downward while halting the gradual increase from agriculture. Progress in smaller categories will help at the margins, but the biggest gains lie in the two largest sources.
Background
The chart shows a national breakdown by source of the yearly nitrous oxide (N2O) emissions from human activities and processes, expressed as weight in megatonnes (Mt). Human-induced emissions are the main driver of the increasing atmospheric nitrous oxide that is warming our planet. The sources of human nitrous oxide emissions are
- Agriculture
- Energy
- Industry
- Waste
- Other
Agriculture
Emissions related to agriculture are mainly from the use of synthetic fertilizers and manure management.
Synthetic fertilizer, used for agricultural processes, contains a lot of nitrogen. That nitrogen in the soil reacts and causes considerable N2O emissions. The use of excess fertilizer, meaning more fertilizer than the plants can use to grow, causes even higher relative emissions. Applying the right amount of fertilizer at the right time can reduce N2O emissions. There are many technical solutions to reduce emissions while keeping, or even increasing, agricultural yields.
When manure is left on the field or otherwise managed in dry processes, it emits considerable amounts of nitrous oxide. Manure can be managed by wet processes, which reduces nitrous oxide emissions but increases methane emissions. Some technical solutions focus on modifying the animal feed to reduce the nitrogen in the manure, thereby reducing nitrous oxide emissions.
Energy, Industry, Waste, and Other
All non-agricultural categories together have much lower emissions than agricultural emissions alone.
N2O emissions related to energy are almost all from the combustion of fossil fuels. For example, the combustion of fossil fuels in power plants, cars, and airplanes not only causes CO2 emissions but also emits nitrous oxide (N2O). Any advances to reducing fossil fuel dependency will thus also reduce nitrous oxide emissions.
Most industry-related emissions are from the chemical industry for producing fertilizer, nylon, and similar products. Technologies are available to reduce emissions in these processes.
Nitrous oxide emissions from waste come from, for example, wastewater treatment and landfills.
Wikipedia: Nitrous oxideIPCC: AR6, 5.16 Anthropogenic nitrous oxide (N2O) emissions
Units and Measures
N2O emissions are expressed in the total weight in megatonnes per year. 1 Megatonne is equal to 1 million tonnes.
Wikipedia: MegatonneWikipedia: Global warming potential
About the Data
The last available year in all the emission datasets is 2023. N2O emissions come from the PRIMAP-Hist dataset. It is a rich dataset that combines several published sources to create a historical emissions time series for various greenhouse gases.
The Key Insights paragraph was created using a large language model (LLM) in combination with our data, historic events, and a structured approach for best accuracy by separating the context generation from the interpretation and narrative.
Data Sources
PRIMAP-hist The PRIMAP-hist national historical emissions time series (1750-2023)
Update cycle: Every few monthsDelay: Less than 1 yearCredits: Gütschow, Johannes; Busch, Daniel; Pflüger, Mika (2024): The PRIMAP-hist national historical emissions time series (1750-2023) v2.6. Zenodo.