# Sea Surface Temperature Monitor
*sensor . products*

Sea-surface temperature thermal payload flown on EOS-06 / Oceansat-3.

## Specifications
- **product status**: operational
- **deployment context**: orbital
- **manufacturer**: isro
- **sensor**: {"instrument_family":"passive-optical","measurement_principle":"passive","spec_disclosure":"undisclosed"}
- **entity type**: sensor
- **last verified date**: 2026-06-16
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: isro
- **attributes**: {"kind":"sensor","product_status":"operational","deployment_context":"orbital","manufacturer":"isro","description":"Sea-surface temperature thermal payload flown on EOS-06 / Oceansat-3.","sensor":"{\"instrument_family\":\"passive-optical\",\"measurement_principle\":\"passive\",\"spec_disclosure\":\"undisclosed\"}"}
- **relevance**: in-scope

## Editorial
Sea Surface Temperature Monitor is the SSTM payload on EOS-06 / Oceansat-3 [^isro-eos-06][^mosdac-oceansat3]. It is a two-channel thermal infrared radiometer for sea-surface temperature, with bands at 10.75-11.25 um and 11.75-12.25 um [^wmo-sstm]. The instrument has a 1.08 km ground sample distance and 1440 km swath for the sea-surface-temperature measurement design [^wmo-sstm]. It is not in operation at present because of a scan-mechanism technical problem [^mosdac-oceansat3]. The operational caveat matters for data-continuity assessment because the design supports thermal sea-surface-temperature retrieval, while current operation is unavailable [^mosdac-oceansat3][^wmo-sstm].

## Compositional position
- oceansat-3 (missions) --[mission_payloads]--> Sea Surface Temperature Monitor

## Sources
- [isro-eos-06] | EOS-06 mission page, ISRO | https://www.isro.gov.in/EOS_06.html | tier=agency-doc | accessed=2026-06-16
- [mosdac-oceansat3] | MOSDAC Oceansat-3 introduction | https://www.mosdac.gov.in/oceansat-3-introduction | tier=agency-doc | accessed=2026-06-16
- [wmo-sstm] | WMO OSCAR instrument record: SSTM | https://space.oscar.wmo.int/instruments/view/sstm | tier=community | accessed=2026-06-16

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