Unprecedented wildfire activity across the Indonesian archipelago is threatening to push national carbon emissions to levels not seen in over a decade. Data released by the Global Fire Emissions Database (GFED) indicates that as of September 7, 2026, active fires across Indonesia have released approximately 76 million tonnes of carbon (MtC) into the atmosphere. This surge puts the 2026 fire season on a trajectory dangerously similar to the catastrophic 2015 crisis, during which 2.6 million hectares of forest and peatland burned, generating an astonishing 333 MtC in total emissions.
Driven by a powerful, multi-year El Niño climate cycle that began in June 2026 and is projected to extend into 2027, the fires are severely exacerbated by decades of intensive land drainage, agricultural expansion, and deforestation. While historically concentrated in Sumatra and Kalimantan, the 2026 burn pattern reveals a troubling geographical shift. The eastern province of Papua—home to some of the world’s most pristine tropical rainforests and carbon-dense peat soils—is experiencing record-breaking fire intensity.
Environmental scientists and atmospheric monitoring bodies warn that without immediate intervention, rain pattern reversals, and systemic peatland rewetting, the ongoing fires could trigger a ecological disaster with severe regional public health consequences and global climate feedback implications.
INDONESIAN FIRE EMISSIONS TRAJECTORY (MtC)
===================================================================================
1997 Peak | ################################################## 800+ MtC
2015 Disastrous | ##################### 333 MtC
2000-2026 Average | ##### 85 MtC
2026 (YTD Sept 7) | #### 76 MtC [On track to match 2015]
===================================================================================
Detailed Chronology: From Legacy Crises to the 2026 Surge
Indonesia’s struggle with landscape-scale fires is deeply intertwined with its economic development trajectory and periodic ocean-atmosphere climate shifts. Understanding the current 2026 escalation requires examining the landmark fire events of recent decades.
CHRONOLOGY OF INDONESIA'S WILDFIRE CRISES & POLICY RESPONSES
1997-1998 2015 2016-2021 2025 2026
+----------------------+----------------------+----------------------+----------------------+----------------------+
| Historic High | Modern Benchmark | Policy Reform Era | Deregulation Risk | Current Emergency |
| • 800+ MtC emitted | • 333 MtC emitted | • BRG established | • BRGM dissolved | • Strong El Niño |
| • 13-40% of global | • Exceeded total EU | • Moratorium on | • Oversight | • 76 MtC by Sept 7 |
| fossil emissions | annual emissions | forest conversion | decentralized | • Shift to Papua |
| • Widespread haze | • 100k+ deaths | • Peat restoration | • Vulnerability rises| • Threat to hit 2015 |
+----------------------+----------------------+----------------------+----------------------+----------------------+
The 1997–1998 Landmark Catastrophe
The benchmark for Indonesian fire destruction occurred during the extreme El Niño of 1997–1998. Peer-reviewed studies estimated that the fires generated carbon emissions equivalent to 13% to 40% of total global fossil fuel emissions that year. The resulting haze crippled transportation, tourism, and public health across Southeast Asia, establishing Indonesian peatland fires as an environmental issue of planetary significance.
The 2015 Regional Crisis
In 2015, another powerful El Niño struck the region, drying out vast swathes of degraded peatlands that had been drained for oil palm and timber concessions. Over the course of several months, the fires emitted more carbon dioxide on a daily basis than the entire U.S. economy during peak burn periods. Total seasonal emissions surpassed the annual fossil-fuel emissions of the European Union, while toxic particulate haze (PM2.5) blanketed Indonesia, Singapore, Malaysia, and southern Thailand. Epidemiological models later linked the 2015 haze to more than 100,000 premature deaths across Southeast Asia.
Post-2015 Policy Reforms and Relative Reprieve
In response to global outcry and domestic public health emergencies, the Indonesian government enacted significant regulatory reforms:
2011–2019 Moratoriums: Permanent bans were placed on issuing new primary forest and peatland development licenses.
2016 Peatland Restoration Agency (BRG): Established to rewet and restore 2 million hectares of degraded peatland. In 2021, its scope was expanded to include mangroves (BRGM).
Targeted Interventions: Canal blocking and community fire-fighting squads (Manggala Agni) successfully curtailed fire spread during the moderate El Niño of 2019.
The 2025 Institutional Shift
In late 2025, the dedicated federal agency responsible for peatland and mangrove restoration was dissolved, with its functions redistributed among regional authorities and broader environmental ministries. Critics warned that this institutional restructuring weakened central oversight just as long-range climate models began forecasting a powerful new El Niño event for 2026.
The 2026 Surge
June 2026: The U.S. National Oceanic and Atmospheric Administration (NOAA) and global meteorological bodies officially declared the onset of a strong El Niño event.
July–August 2026: Temperatures across Sumatra, Kalimantan, and Papua rose significantly above long-term averages. Water tables in drained peatlands dropped below critical management thresholds.
Early September 2026: GFED data confirmed that cumulative daily fire emissions reached 76 MtC by September 7, closely mimicking the upward trajectory recorded during the opening weeks of the catastrophic 2015 fire season.
Supporting Context & Metrics: Biogeochemistry, Emissions, and Public Health
The drivers of Indonesia’s fire emergency involve a complex interplay between climate drivers, soil chemistry, and land-use economics.
Unlike surface forest fires in temperate zones, which burn foliage and live vegetation, Indonesian fires predominantly burn peat—accumulated layers of partially decomposed organic plant matter built up over thousands of years in swampy conditions.
Carbon Storage Density: Tropical peatlands store up to 10 times more carbon per hectare than tropical rainforests on mineral soils.
Subterranean Smoldering: When canals are dug to drain peat swamps for agriculture, the peat dries out and becomes highly combustible fuel. Once ignited, peat burns in a slow, flameless subterranean smoldering process that can extend meters underground.
Extinction Resistance: Surface rain or conventional firefighting rarely extinguishes subterranean peat fires; they continue burning until water tables fully recharge during seasonal monsoons.
Fire Metrics and Carbon Tracking (2000–2026)
Comparative emissions metrics highlight the severity of the 2026 fire season relative to historical benchmarks:
Year
Primary Climate Driver
Estimated Burned Area (Hectares)
Total Carbon Emissions (MtC)
Primary Fire Locations
1997
Very Strong El Niño
~4,500,000
~800+
Sumatra, Kalimantan
2006
Moderate El Niño
~1,800,000
~190
Sumatra, Kalimantan
2015
Very Strong El Niño
~2,600,000
333
Sumatra, Kalimantan, Papua
2019
Weak/Moderate El Niño
~1,600,000
~120
Sumatra, Kalimantan
2026 (YTD Sept 7)
Strong El Niño
In Progress
76(Tracking ~330 total)
Papua, Kalimantan, Sumatra
(Data Sources: Global Fire Emissions Database; Field et al.; Van der Werf et al.; Chen et al.)
The toxic smoke produced by peat fires consists of a hazardous mixture of carbon monoxide, methane, volatile organic compounds (VOCs), and fine particulate matter ($PM_2.5$).
Transboundary Haze: Wind patterns during the dry season transport smoke plumes across the Malacca Strait, causing transboundary haze outbreaks that shut down schools, airports, and industrial activity in neighboring countries.
Long-Term Health Toll: Chronic exposure to heavy peat smoke leads to acute respiratory infections (ARI), cardiovascular stress, permanent lung damage, and increased infant mortality across vulnerable populations.
Official Statements and Expert Analysis
Leading atmospheric scientists, conservation specialists, and policy analysts have weighed in on the accelerating 2026 crisis, raising concerns about both the natural climate drivers and structural governance gaps.
The Climate Perspective
Dr. Mark Parrington, Senior Scientist at the European Centre for Medium-Range Weather Forecasts (ECMWF) Copernicus Climate Change Service, emphasizes the unusual intensity of the dry season activity:
"From August until the end of October into November is the standard dry season in Indonesia. We do normally see fire activity around this time of year, but nowhere near the scale that we’ve seen this year, or indeed during any of the previous severe El Niño years. The satellite data clearly indicates a marked escalation in thermal anomalies and aerosol optical depth."
The Vulnerability of Degraded Peatlands
Dr. Nisa Novita, Strategic Lead for Peatland at the environmental NGO Yayasan Konservasi Alam Nusantara (YKAN), highlights that while El Niño sets the meteorological conditions, human modification of the landscape provides the fuel:
"El Niño does not directly cause most fires, but acts as a major amplifier by creating hotter and drier conditions, making fires easier to ignite, spread faster, and much harder to control.
"When peatlands are degraded and drained due to canal development for industrial agriculture, the water table drops dramatically, making the peat dry and highly flammable, especially during El Niño events. Unlike dry forest ecosystems, peat fires smolder underground—the soil itself becomes readily available, dense fuel.
"We have learned and improved governance over the past decade. But the ultimate question remains: is it enough? Or are we still fundamentally underestimating the risk that degraded peatlands pose when hit by another powerful El Niño?"
PEATLAND RESTORATION vs DEGRADATION IMPACT
DEGRADED PEATLAND RESTORED PEATLAND
+--------------------------+ +--------------------------+
| Deep Drainage Canals | | Dams / Canal Blocking |
| Low Water Table | | High Water Table |
| Dry Organic Topsoil | | Moist Organic Layer |
| High Fire Risk | | Low Fire Vulnerability |
| Smoldering Combustion | | Natural Carbon Sink |
+--------------------------+ +--------------------------+
│ │
▼ ▼
[ Continuous Carbon Source ] [ Protected Carbon Store ]
Shift to New Frontiers: The Papua Emergency
Dr. Guido van der Werf, leading climate scientist at Wageningen University in the Netherlands and co-creator of the Global Fire Emissions Database, points out that geographic shifts in fire patterns reveal regional policy gaps:
"The fire emissions data shows we are more or less on track to match the emissions profile of 2015. I had hoped that this year Indonesia would be relatively quiet, even with a big El Niño, given the regulatory reforms enacted after 2015. You could argue that if those regulations had fully worked, this wouldn’t be a massive fire season despite the drought.
"This relative stability may be holding in parts of Sumatra, which has seen a comparatively quiet fire season so far. But that is definitely not the case in other regions. Eastern provinces like Papua, as well as neighboring Papua New Guinea, are the new frontiers. They are basically undergoing the same intensive land-use transformations and fire pressures that Sumatra went through twenty years ago."
Future Outlook: Ecological Tipping Points and Strategic Imperatives
As the 2026 El Niño event persists toward late 2026 and early 2027, the regional trajectory depends on meteorological conditions and immediate emergency responses.
SCENARIO ANALYSIS: INDONESIA WILDFIRE OUTCOMES (2026-2027)
[ 2026 EL NIÑO PERSISTS ]
│
┌────────────────────────┴────────────────────────┐
▼ ▼
[ SCENARIO A: WORST CASE ] [ SCENARIO B: MANAGED IMPACT ]
• Fires extend through Nov 2026 • Early monsoon onset (Late Oct)
• Weak enforcement in Papua • Emergency canal blocking deployed
• Dissolution of oversight holds • Direct fire suppression in high-risk zones
• Total Emissions > 330 MtC • Total Emissions capped < 150 MtC
• Severe regional health crisis • Contained transboundary haze
Short-Term Risks (Late 2026 – Early 2027)
Extended Dry Season: If the Pacific ocean warming trends continue at their current pace, the traditional end-of-year monsoon rains across southern and eastern Indonesia may be delayed into late November or December.
Subterranean Holdover Fires: Smoldering subterranean fires could persist beneath the surface during brief rains, re-emerging as open blazes as soon as dry spells return.
Severe Transboundary Haze: Major urban centers across Southeast Asia face elevated risks of severe air quality deterioration, threatening economic productivity and healthcare systems.
Long-Term Climate Implications
Tipping Point for Tropical Peatlands: Repeated burning cycles permanently degrade peat swamp ecosystems, converting rich biodiversity hotspots into barren scrubland dominated by fire-prone invasive grasses.
Feedback Loops in the Global Carbon Budget: If Indonesia’s land-use sector reverts to emitting hundreds of millions of tonnes of carbon during El Niño cycles, it risks offsetting global industrial emission reductions and threatening international climate goals under the Paris Agreement.
Key Strategic Imperatives
To break the cycle of recurring fire emergencies, international climate policy experts and conservation groups recommend several urgent priorities:
Re-establishing Specialized Federal Oversight: Restoring strong, centralized authority dedicated exclusively to peatland and mangrove rewetting, canal-blocking enforcement, and monitoring.
Extending Protections to Papua: Implementing immediate moratoriums on land conversion concessions across Papua to prevent the province from repeating the deforestation and fire trajectories seen in Sumatra and Kalimantan.
Institutionalizing Carbon Market Financing: Leveraging high-integrity carbon credits and international loss-and-damage climate finance to fund long-term rewetting and conservation efforts managed by local and Indigenous communities.
Enhanced Real-Time Monitoring: Utilizing high-resolution satellite imagery and thermal sensors to identify subterranean ignition points early, allowing rapid ground response teams to extinguish smoldering fires before they expand into uncontrollable blazes.
