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Wildfire fronts at night in mid-wave infrared

Data

Thermal

Surface temperature from thermal infrared, day and night, down to 3.5 m.

3.5 m

  • HotSat3.5 mSatVu
  • KOMPSAT-3A (IR)5.5 mSI Imaging Services
  • SkyBee / HiVE30 m2 satellitesconstellr
Best resolution
3.5 m
Bands
Mid-wave infrared 3–5 µm · long-wave 8.6–11.75 µm
Products
Stills and thermal video; land surface temperature grids
Day / night
Both, night preferred
Status
HotSat-2, SkyBee-1 and SkyBee-2 in service

Emission

Radiance by surface temperature, against the two atmospheric windows. Switch to day to add reflected sunlight.

Mid-wave 3–5 µmLong-wave 8–12 µmWater vapour absorbs10⁻²10⁻¹110¹10²10³10⁴10⁵1234568101214Wavelength, µmRadiance, W·m⁻²·sr⁻¹·µm⁻¹
  • Emitted
  • Reflected sunlight
Surface temperature
Emission peak
Mid-wave : long-wave
Sunlight in mid-wave

Blackbody emission. Reflected sunlight at albedo 0.15, sun 45° above the horizon.

Sensors

Band and ground pixel, commercial and public.

1 m10 m100 m1 km345678910111213Wavelength, µmHotSatSatVu · 3.5 mKOMPSAT-3ASI Imaging Services · 5.5 mHiVEconstellr · 30 mECOSTRESSNASA · 70 mLandsat 8/9 TIRSNASA / USGS · 100 mSentinel-3 SLSTRESA · 1 km
  • Operators we task
  • Public missions

Gallery

Select a frame to open it at full resolution.

Airfield in mid-wave infrared, warm hangars and aprons

Detects

  • Heat loss from roofs and façades, building by building
  • Which plants, stacks and units are running
  • Crop water stress days before it shows in colour
  • Urban heat islands, at street resolution