🗞️ Why in News A Down To Earth analysis of satellite data reveals that forest fires in high-elevation areas of the western Himalayas have quadrupled over the past decade — from 514 fires at 2,500 m and above in 2013-14 to 1,988 in 2025-26. Fires are now climbing to elevations previously thought immune, driven by warming temperatures, declining snowfall, and shifting precipitation patterns.

The Upward Shift — Key Data

  • DTE analysed fire trends during the active fire season (November 1 to June 1)
  • Western Himalayas (≥2,500 m): 514 fires (2013-14) → 1,988 fires (2025-26) = 4x increase
  • Historically, most Himalayan fires occurred below 2,000 m — near-surface temperatures higher, more human activity
  • Now fires detected at 2,000 to 4,000 m across the entire Himalayan arc (western to eastern)
  • Central and eastern Himalayas: fires traditionally rare above 2,800-3,000 m; now traced to ~3,000 m
  • High-elevation fires are often “massive or high-energy events” — fuelled by large dry biomass accumulations in areas with limited fire management

Eastern Himalaya Escalation

  • Arunachal Pradesh (Feb 13-19, 2026): recorded nearly 200 times more fire incidents than the same period a year earlier
  • Fires at unusually high elevations forced the Indian Air Force to conduct firefighting operations at ~2,900 m
  • Nagaland: sharp escalation in January-February 2026

Expanding Burn Area

Region Period Data
Western Himalayas 2001-2019 Burned area increased by 73 sq km
Eastern Himalayas 2001-2020 Average annual burn area: over 3,100 sq km

Triggering Factors

1. El Niño Connection
  • El Niño (warm phase of ENSO) brings hotter, drier conditions across India → favourable for fire ignition and spread
  • Peak fire years corresponded with El Niño: 2004, 2006, 2009, 2010, 2012, 2014, 2016
  • Underscores the role of large-scale climatic oscillations in intensifying regional fire activity
2. Himalayan Warming
  • The Himalayan region is warming faster than the rest of India — altering vegetation patterns and drying forest floors
  • Temperature exerts a stronger influence on fire activity than precipitation deficit during the pre-monsoon months (March-May)
3. Declining Snowfall & Western Disturbance Shift
  • High-altitude western Himalayan areas: snowfall has declined in recent winters, making forests increasingly combustible
  • Western disturbances (extratropical storms originating near the Mediterranean) — the primary source of winter precipitation for western Himalayas
  • Their activity has shifted towards spring and summer months — fewer now produce snowfall
  • 2025-26 winter: only a handful of western disturbances resulted in snowfall
4. Rainfall Concentration & Lengthening Fire Season
  • Climate change is concentrating rainfall into the June-September monsoon, while the rest of the year grows drier
  • If monsoon arrives late → forests remain dry during fire season → trees shed more leaves → increased ground biomass = fuel
  • Fire season is lengthening — traditionally March-May, now extending to mid-June as southwest monsoon delays

Ecological Consequences

Forest Composition Change
  • Repeated fires are reshaping ecology of the middle and higher Himalayas
  • Fire-intolerant native species shrinking: rhododendron, Himalayan oak
  • Replaced by fire-tolerant invasives: pines, undergrowth weeds like lantana
  • Forest structure shifting from dense, closed-canopy stands → open woodlands
Soil Degradation & Landslide Risk
  • Fires deplete soil nutrients and moisture while increasing soil acidity
  • Declining fertility and erosion on steep slopes
  • Vegetation loss on Himalayan slopes → triggers landslides during monsoon → affects long-term ecological stability
Emissions Inventory (2001-2020, Himalayan Fires)
  • CO₂ released: average 40.81 teragrams (Tg)/year
  • Carbon monoxide: 2.52 Tg/year
  • Plus substantial quantities of methane, nitrogen oxides, sulphur dioxide, ammonia, and fine particulate matter (PM2.5)
Glacier Melt Acceleration
  • Black carbon from biomass burning settles on Himalayan glaciers (Gangotri, Tapovan) during peak fire season
  • Reduces surface albedo (reflectivity) → accelerates ice melt
  • Creates a dangerous positive feedback loop: warming → fires → black carbon → glacier melt → more warming

Way Forward

Prevention Over Suppression
  • Himalaya’s rugged terrain makes active fire suppression extremely difficult — prevention is critical
  • Satellite imagery can identify areas with heavy fuel loads before the fire season
  • Create fuel breaks, thin ground vegetation, remove accumulated litter (especially chir pine needles)
Community-Based Approaches
  • Combine technological tools with indigenous knowledge and community participation
  • Strengthen the Van Panchayat system — village-based forest governance institutions (especially in Uttarakhand)
  • Could reduce fire risk while providing livelihoods (controlled burning, fuel removal as employment)

Critical Evaluation for UPSC Mains

Inter-linkages
  • Climate change → fire → biodiversity loss → soil degradation → landslides → livelihood destruction — a cascading chain
  • Water security: Himalayan glaciers (fed by snowfall, degraded by black carbon) supply rivers for ~1.65 billion people
  • Carbon feedback: Forest fires release CO₂ → further warming → more fires → forests shift from carbon sink to carbon source (parallels the Amazon reversal documented in SOE 2026)
  • Van Panchayat connection: DTE March also covers the regressive Van Panchayat amendments in Uttarakhand (see Chapter 11) — weakening these institutions while fires escalate is dangerously counterproductive
Policy Gaps
  • India has no dedicated mountain fire policy — forest fire management is generic, not altitude-sensitive
  • National Action Plan on Forest Fires (2018) exists but implementation is weak — focus on plains and lower hills
  • Need: elevation-specific fire risk zoning, early warning systems integrated with western disturbance forecasts, and dedicated high-altitude fire response teams

UPSC Angle

  • Prelims: Western disturbances, El Niño/ENSO, MODIS/VIIRS satellite fire monitoring, Van Panchayat, black carbon, albedo effect, chir pine
  • Mains GS-1: Physical geography — Himalayan climate, western disturbances, glaciology, geomorphology (landslides)
  • Mains GS-3: Environment — forest fires, climate change impacts, biodiversity loss, disaster management, carbon emissions
  • Essay: “When mountains burn — the forgotten fire crisis of the Himalayas”

📌 Facts Corner — Knowledgepedia

Himalayan Fire Data (DTE Satellite Analysis):

  • Western Himalayas fires at ≥2,500 m: 514 (2013-14) → 1,988 (2025-26) = 4x increase
  • Active fire season: November 1 to June 1
  • Fire season lengthening: March-May → extending to mid-June
  • Arunachal Pradesh (Feb 13-19, 2026): 200x more fires than same period previous year
  • IAF firefighting operations at ~2,900 m elevation

Burn Area:

  • Western Himalayas: increased by 73 sq km (2001-2019)
  • Eastern Himalayas: average annual burn area >3,100 sq km (2001-2020)

Emissions (Himalayan Fires, 2001-2020 average):

  • CO₂: 40.81 Tg/year
  • CO: 2.52 Tg/year
  • Plus methane, NOx, SO₂, ammonia, PM2.5

Climate Drivers:

  • El Niño years = peak fire years (2004, 2006, 2009, 2010, 2012, 2014, 2016)
  • Himalayas warming faster than rest of India
  • Western disturbances shifting to spring/summer; fewer producing snowfall
  • Rainfall concentrating in June-September monsoon

Ecological Impact:

  • Fire-intolerant species declining: rhododendron, Himalayan oak
  • Fire-tolerant invasives spreading: pines, lantana
  • Dense canopy → open woodland transition
  • Black carbon on glaciers (Gangotri, Tapovan) → albedo reduction → accelerated melt

Key Experts Cited:

  • Somnath Bar — postdoctoral fellow, University of California, Irvine
  • Vishwambhar Prasad Sati — professor of geography, Mizoram University, Aizawl

Other Relevant Facts:

  • National Action Plan on Forest Fires: launched 2018
  • Van Panchayats: community forest governance (Uttarakhand); under threat from PVN 2024 amendments
  • Chir pine (Pinus roxburghii): needles are highly flammable ground fuel — major fire accelerant
  • India’s forest fire prone area: ~36% of total forest cover (FSI estimate)
  • Himalayan glaciers supply water to ~1.65 billion people across South Asia

Sources: Down to Earth, Natural Hazards journal, GIScience and Remote Sensing