# Total Anthropogenic and Natural emissions mapping SpectrOmeter-3 (TANSO-3)
*sensor . products*

Grating imaging spectrometer carried by GOSAT-GW for CO2, CH4 and NO2 observations in wide and focus modes.

## Specifications
- **product status**: operational
- **deployment context**: orbital
- **manufacturer**: mitsubishi-electric
- **sensor**: {"instrument_family":"passive-optical","measurement_principle":"passive","spectral_range_nm":{"min":450,"max":1610},"spectral_band_count":3,"gsd_m":{"native":10000},"swath_km":911,"notes":"TANSO-3 uses bands around 0.45, 0.76 and 1.61 micrometres; wide mode provides 10 km mapping and focus mode provides targeted observations at 1-3 km scale."}
- **entity type**: sensor
- **last verified date**: 2026-06-16
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: mitsubishi-electric
- **attributes**: {"kind":"sensor","product_status":"operational","deployment_context":"orbital","manufacturer":"mitsubishi-electric","description":"Grating imaging spectrometer carried by GOSAT-GW for CO2, CH4 and NO2 observations in wide and focus modes.","sensor":"{\"instrument_family\":\"passive-optical\",\"measurement_principle\":\"passive\",\"spectral_range_nm\":{\"min\":450,\"max\":1610},\"spectral_band_count\":3,\"gsd_m\":{\"native\":10000},\"swath_km\":911,\"notes\":\"TANSO-3 uses bands around 0.45, 0.76 and 1.61 micrometres; wide mode provides 10 km mapping and focus mode provides targeted observations at 1-3 km scale.\"}"}
- **relevance**: in-scope

## Editorial
Total Anthropogenic and Natural emissions mapping SpectrOmeter-3 (TANSO-3) is the passive optical grating imaging spectrometer carried by GOSAT-GW for greenhouse-gas and air-pollutant observation. [^jaxa-gosat-gw] [^gosat-gw-paper] It observes three spectral bands around 0.45 um, 0.76 um and 1.61 um, supporting CO2, CH4 and NO2 retrievals. [^gosat-gw-paper] Standard Level 2 products are planned for XCO2, XCH4, SIF and NO2, with standard Level 1 and Level 2 products planned for free availability. [^nies-gosat-gw] Wide Mode provides 10 km footprints across a 911 km swath and is designed to produce globally covered maps within 3 days. [^gosat-gw-paper] Focus Mode trades coverage for targeted high-spatial-resolution snapshots, with 1-3 km footprints over an approximately 90 km target area. [^gosat-gw-paper] TANSO-3 has demonstrated short-wave-infrared absorption screening and tropospheric NO2 column retrieval on GOSAT-GW, linking greenhouse-gas mapping with air-pollution observation in the same instrument. [^gosat-gw-paper]

## Compositional position
- gosat-gw (missions) --[mission_payloads]--> Total Anthropogenic and Natural emissions mapping SpectrOmeter-3 (TANSO-3)

## Sources
- [gosat-gw-paper] | The greenhouse gas observation mission with GOSAT-GW | https://link.springer.com/article/10.1186/s40645-025-00684-9 | tier=peer-reviewed | accessed=2026-06-16
- [nies-gosat-gw] | GOSAT-GW Project: greenhouse gas observation and data products, NIES | https://gosat-gw.nies.go.jp/en/gosat-gw02.html | tier=agency-doc | accessed=2026-06-16
- [jaxa-gosat-gw] | IBUKI GW (GOSAT-GW), JAXA Satellite Navigator | https://www.satnavi.jaxa.jp/files/project/gosat-gw/en/ | tier=agency-doc | accessed=2026-06-16

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Source: https://eo-atlas.org/products/sensor/tanso-3
Maintainer: SpectraWorks B.V. (CC-BY 4.0)