# EUMETSAT IASI Level 2 Temperature and Humidity Profiles
*data products*

## Specifications
- **level**: L2
- **distributor**: eumetsat
- **file format**: EPS native, BUFR
- **access endpoint**: https://user.eumetsat.int/catalogue/EO%3AEUM%3ADAT%3AMETOP%3AEARS-IASI-L2
- **access model**: open
- **licence**: EUMETSAT data access terms
- **cost model summary**: Available through EUMETSAT data services subject to EUMETSAT access terms.
- **primary data portal url**: https://user.eumetsat.int/catalogue/EO%3AEUM%3ADAT%3AMETOP%3AEARS-IASI-L2
- **use cases**: ["Temperature profile retrieval","Humidity profile retrieval","Operational atmospheric sounding","NWP input and monitoring"]
- **practical limitations**: ["IASI is an infrared sounding product, so cloud conditions affect profile retrieval utility.","Profile retrieval combines IASI with microwave sounder measurements for the listed EARS product."]
- **deployment context**: orbital
- **entity type**: data_product
- **last verified date**: 2026-06-14
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: eumetsat
- **attributes**: {"level":"L2","distributor":"eumetsat","file_format":"EPS native, BUFR","access_endpoint":"https://user.eumetsat.int/catalogue/EO%3AEUM%3ADAT%3AMETOP%3AEARS-IASI-L2","access_model":"open","licence":"EUMETSAT data access terms","cost_model_summary":"Available through EUMETSAT data services subject to EUMETSAT access terms.","primary_data_portal_url":"https://user.eumetsat.int/catalogue/EO%3AEUM%3ADAT%3AMETOP%3AEARS-IASI-L2","use_cases":"[\"Temperature profile retrieval\",\"Humidity profile retrieval\",\"Operational atmospheric sounding\",\"NWP input and monitoring\"]","practical_limitations":"[\"IASI is an infrared sounding product, so cloud conditions affect profile retrieval utility.\",\"Profile retrieval combines IASI with microwave sounder measurements for the listed EARS product.\"]","deployment_context":"orbital"}
- **relevance**: in-scope

## Editorial
EUMETSAT IASI Level 2 Temperature and Humidity Profiles are Level 2 atmospheric sounding products distributed by EUMETSAT for Metop IASI profile retrieval use.[^eumetsat-iasi-l2][^eumetsat-iasi-pug] The product provides temperature and humidity profile outputs derived from Metop IASI, AMSU-A, and MHS measurements.[^eumetsat-iasi-l2][^eumetsat-iasi-pug] Access is through EUMETSAT data services under EUMETSAT access terms, with the listed product portal serving the Data Store entry point.[^eumetsat-iasi-l2] The product is available in EPS native and BUFR formats for orbital deployment-context workflows.[^eumetsat-iasi-l2] It fits operational atmospheric sounding, numerical weather prediction input and monitoring, and profile retrieval workflows that can use infrared sounding combined with microwave measurements.[^eumetsat-iasi-l2][^eumetsat-iasi-pug] Practical use depends on retrieval conditions: IASI is an infrared sounding product, so cloud conditions affect profile utility, and the listed EARS product combines IASI with microwave sounder measurements.[^eumetsat-iasi-pug]

## Compositional position
- atmospheric-profiling (topics) --[topic_capabilities]--> EUMETSAT IASI Level 2 Temperature and Humidity Profiles

## Sources
- [eumetsat-iasi-l2] | IASI Level 2 Temperature and Humidity Profiles, EUMETSAT Data Store | https://user.eumetsat.int/catalogue/EO%3AEUM%3ADAT%3AMETOP%3AEARS-IASI-L2 | tier=agency-doc | accessed=2026-06-14
- [eumetsat-iasi-pug] | Product User Guide: IASI level2 TS, T, Q release 1.1 | https://user.eumetsat.int/s3/eup-strapi-media/Product_User_Guide_IASI_level2_TS_T_Q_release_1_1_v2_A_0_d184d4c08b.pdf | tier=agency-doc | accessed=2026-06-14

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Source: https://eo-atlas.org/data_products/eumetsat-iasi-l2-temperature-humidity-profiles
Maintainer: SpectraWorks B.V. (CC-BY 4.0)