An economic event, not only an environmental one
Warming is already changing what land produces, what infrastructure costs to keep running, and what governments spend after each disaster.
Drought and fire cut harvests and close airports; floods take out roads, irrigation and housing; heat lowers labour productivity and raises power demand at the same time. Each event travels beyond the place it strikes — through supply chains, insurance, public budgets and the cost of capital. For a tropical archipelago with a large agricultural workforce and long coastlines, exposure is structural rather than occasional.
Two kinds of risk follow. Physical risk is the damage itself, acute and chronic. Transition risk is the repricing that comes with the response: carbon costs, disclosure requirements, border measures, and assets that lose value before the end of their design life.
What the impacts look like
The damage arrives through a small number of repeating channels, and each one has a price.
Agriculture takes the first hit: shifted rainfall and longer dry spells lower yields of rice, palm and coffee, while fire in drained peat destroys standing crops and closes airports and schools for weeks. Water follows — reservoirs and irrigation systems designed for a former rainfall pattern now swing between shortage and flood, and cities on subsiding coasts face saline intrusion into their supply.
Infrastructure and public budgets absorb the rest. Floods and landslides take out roads, bridges and housing, and reconstruction competes with planned development spending. Heat lowers outdoor labour productivity and raises electricity demand at the same time as it constrains generation. Health costs rise with haze and heat exposure. Coastal communities and small-island districts carry the sharpest concentration of these effects, and they are the least able to finance recovery.
The international framework
Two instruments set the terms under which every country now acts: the UNFCCC and the Paris Agreement.
The UN Framework Convention on Climate Change, agreed in 1992, established the objective of stabilizing greenhouse gas concentrations at a level that avoids dangerous interference with the climate system, and the principle that countries act according to common but differentiated responsibilities and respective capabilities. It created the machinery — annual conferences of the parties, national inventories, reporting — but not binding reduction levels.
The Paris Agreement, adopted in 2015, supplied the goal and the mechanism. It holds warming well below 2°C above pre-industrial levels and pursues 1.5°C, and it works from the bottom up: each country submits a Nationally Determined Contribution, revisits it every five years, and is expected to raise ambition with each cycle. A global stocktake measures collective progress against the temperature goal, and the reporting framework makes each country’s performance comparable.
Article 6 of the Agreement allows countries to cooperate on mitigation and to transfer emission reduction outcomes between them, provided the accounting avoids double counting. That provision is the legal basis on which national carbon markets, crediting mechanisms and the current generation of transaction rules are being built — and the reason carbon has become a tradable asset with a regulatory history rather than a voluntary gesture.
Why ambition has to rise
The gap between current pledges and the Paris temperature goal is a quantity of emissions, and it has a date attached to it.
Holding 1.5°C requires deep cuts this decade, not only mid-century targets. Every year of delay narrows the remaining budget, raises the rate of reduction needed later, and increases reliance on removals that are neither cheap nor proven at scale. Delay also builds new long-lived, high-emitting assets whose retirement then has to be financed.
For Indonesia the two largest levers are the power system and land use. Coal dominates generation and captive industrial power; deforestation, peat degradation and fire dominate land-based emissions. Both are also where the co-benefits sit: cleaner air, more resilient water supply, and rural income that does not depend on clearing.