# TIRS (Landsat 8 Thermal Infrared Sensor)
*sensor . products*

Thermal Infrared Sensor on Landsat 8, built at NASA Goddard, measuring land surface temperature in two thermal infrared bands from 10.6-12.51 um at 100 m native resolution, resampled to 30 m in Landsat products.

## Specifications
- **product status**: operational
- **deployment context**: orbital
- **manufacturer**: nasa
- **sensor**: {"measurement_principle":"passive","spectral_range_nm":{"min":10600,"max":12510},"instrument_family":"passive-optical","gsd_m":{"resampled":30,"native":100},"swath_km":185,"spectral_band_count":2}
- **entity type**: sensor
- **last verified date**: 2026-06-14
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: nasa
- **attributes**: {"kind":"sensor","product_status":"operational","deployment_context":"orbital","manufacturer":"nasa","description":"Thermal Infrared Sensor on Landsat 8, built at NASA Goddard, measuring land surface temperature in two thermal infrared bands from 10.6-12.51 um at 100 m native resolution, resampled to 30 m in Landsat products.","sensor":"{\"measurement_principle\":\"passive\",\"spectral_range_nm\":{\"min\":10600,\"max\":12510},\"instrument_family\":\"passive-optical\",\"gsd_m\":{\"resampled\":30,\"native\":100},\"swath_km\":185,\"spectral_band_count\":2}"}
- **technology**: optical-spectral-sensing
- **relevance**: in-scope

## Editorial
TIRS is the Thermal Infrared Sensor on Landsat 8, built by NASA Goddard Space Flight Center to measure land surface temperature in two thermal infrared bands [^nasa-l8][^usgs-l8]. Its Band 10 range is 10.6 to 11.19 um and Band 11 range is 11.50 to 12.51 um, covering 10.6 to 12.51 um across the two thermal bands [^usgs-bands]. TIRS data are acquired at 100 m native thermal resolution and resampled to 30 m in Landsat products [^nasa-l8][^usgs-bands]. The instrument is used in Landsat Collection 2 Surface Temperature products for land-surface-temperature and emissivity work [^usgs-coll2-st]. Landsat 8 calibration notices record the TIRS stray-light correction and advise against Band 11 split-window use for quantitative retrievals, so quantitative surface-temperature workflows should account for that Band 11 limitation [^usgs-calib]. Landsat 9 TIRS-2 is a distinct later instrument and should not be conflated with Landsat 8 TIRS [^usgs-l8].

## Compositional position
- landsat-8 (missions) --[mission_payloads]--> TIRS (Landsat 8 Thermal Infrared Sensor)

## Sources
- [nasa-l8] | Landsat 8, NASA Science | https://science.nasa.gov/mission/landsat-8/ | tier=agency-doc | accessed=2026-06-14
- [usgs-l8] | Landsat 8, USGS Landsat Missions | https://www.usgs.gov/landsat-missions/landsat-8 | tier=agency-doc | accessed=2026-06-14
- [usgs-bands] | Landsat band designations, USGS FAQ | https://www.usgs.gov/faqs/what-are-band-designations-landsat-satellites | tier=agency-doc | accessed=2026-06-14
- [usgs-calib] | Landsat 8 OLI and TIRS Calibration Notices, USGS | https://www.usgs.gov/landsat-missions/landsat-8-oli-and-tirs-calibration-notices | tier=agency-doc | accessed=2026-06-14
- [usgs-coll2-st] | Landsat Collection 2 Surface Temperature, USGS | https://www.usgs.gov/landsat-missions/landsat-collection-2-surface-temperature | tier=agency-doc | accessed=2026-06-14

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Source: https://eo-atlas.org/products/sensor/landsat-tirs
Maintainer: SpectraWorks B.V. (CC-BY 4.0)