AVHRR-2
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AVHRR
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ESA CCI Snow project website
type: Document
description: No further details.

Metop-A
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NOAA-18
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EARTH SCIENCE>SPECTRAL/ENGINEERING>INFRARED WAVELENGTHS
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in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords

Climate Research Data Package v4.1
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description: No further details.

NOAA-9
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NOAA-16
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https://catalogue.ceda.ac.uk/uuid/b382ebe6679d44b8b0e68ea4ef4b701c
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description: No further details.
title: ESA Land Cover CCI project team; Defourny, P. (2019): ESA Land Cover Climate Change Initiative (Land_Cover_cci): Global Land Cover Maps, Version 2.0.7. Centre for Environmental Data Analysis, 13.04.2021

NOAA-7
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in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms

Karlsson, K.
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description: G., Stengel, M., Meirink, J.F., RiihelÃ¤, A., Trentmann, J., Akkermans, T., Stein, D., Devasthale, A., Eliasson, S., Johansson, E., HÃ¥kansson, N., Solodovnik, I., Benas, N., Clerbaux, N., Selbach, N., SchrÃ¶der, M., Hollmann, R., 2023. CLARA-A3: The third edition of the AVHRR-based CM SAF climate data record on clouds, radiation and surface albedo covering the period 1979 to 2023. Earth Syst. Sci. Data 15, 4901â4926. - No further details.

METOP-C
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TIROS-N
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ESA Snow Climate Change Initiative (Snow_cci): Daily global Snow Cover Fraction - snow on ground (SCFG) from AVHRR (1979 - 2023), version 4.0
type: Dataset
access rights: Public data: access to these data is available to both registered and non-registered users. http://inspire.ec.europa.eu/metadata-codelist/LimitationsOnPublicAccess/noLimitations
description: This dataset contains Daily Snow Cover Fraction (snow on ground) from AVHRR, produced by the Snow project of the ESA Climate Change Initiative programme. Snow cover fraction on ground (SCFG) indicates the area of snow observed from space over land surfaces, in forested areas corrected for the transmissivity of the forest canopy. The SCFG is given in percentage (%) per pixel. The global SCFG product is available at about 5 km pixel size for all land areas, excluding Antarctica and Greenland ice sheets. The coastal zones of Greenland are included.The SCFG time series provides daily products for the period 1979-2023. The product V4.0 is based on EUMETSAT Fundamental Data Record (FDR) medium resolution optical satellite data from the Advanced Very High Resolution Radiometer (AVHRR). Clouds are masked using the CLARA-A3 cloud product. The retrieval method of the snow_cci SCFG product from AVHRR data has been further developed and improved based on the ESA GlobSnow approach described by MetsÃ¤mÃ¤ki et al. (2015) and complemented with a pre-classification module. All cloud free pixels are then used for the snow extent mapping, using spectral bands centred at about 0.63 Âµm and 1.61 Âµm (channel 3a or the reflective part of channel 3b (ref3b)), and an emissive band centred at about 10.8 Âµm. The snow_cci snow cover mapping algorithm is a three-step approach: first, a strict pre-classification is applied to identify all cloud free pixels which are certainly snow free. For all remaining pixels, the snow_cci SCFG retrieval method is applied using dynamic reference reflectance values (snow, forest, ground) temporally and spatially adapted to consider angle dependencies (sun, view). Finally, a post-processing removes erroneous snow pixels caused either by falsely classified clouds in the tropics or by unreliable ref3b values at a global scale. The following auxiliary data sets are used for product generation: i) ESA CCI Land Cover from 2000; water bodies and permanent snow and i…
language: EN
license: LicenseDocument
  label: Under the following licence https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_snow_terms_and_conditions.pdf, appropriate use of these data may fall under any use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
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CatalogRecord
conforms to: https://joinup.ec.europa.eu/release/geodcat-ap/20
modified: 2026-08-05T00:47:14Z

NOAA-10
type: Entity
type: Concept
in scheme: https://earth.esa.int/concepts/concept_scheme/platforms

METOP-A
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms

NOAA-9
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms

METOP-B
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms

ESA CCI Snow key documents
type: Document
description: No further details.

NOAA-6
type: Entity
type: Concept
in scheme: https://earth.esa.int/concepts/concept_scheme/platforms

Devasthale, A. et al. PyGac: An open
type: Document
description: source, community-driven Python interface to preprocess nearly 40-year AVHRR Global Area Coverage (GAC) data record. Quarterly 11, 3â5 (2017). - No further details.

ESA CCI Data Standards
type: Document
description: No further details.

NOAA-17
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms

NOAA-8
type: Entity
type: Concept
in scheme: https://earth.esa.int/concepts/concept_scheme/platforms

Snow CCI ENVEO homepage
type: Document
description: No further details.

ESA Climate Change Initiative website
type: Document
description: No further details.

NOAA-17
type: Entity
type: Concept
in scheme: https://earth.esa.int/concepts/concept_scheme/platforms

Metop-C
type: Entity
type: Concept
in scheme: https://earth.esa.int/concepts/concept_scheme/platforms

NOAA-8
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms

j.rse.2014.09.018
type: Document
description: No further details.
title: MetsÃ¤mÃ¤ki, S., Pulliainen, J., Salminen, M., Luojus, K., Wiesmann, A., Solberg R. and Ripper, E. 2015. Introduction to GlobSnow Snow Extent products with considerations for accuracy assessment. Remote Sensing of Environment, 156, 96â108.

NOAA-11
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Metop-B
type: Entity
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AVHRR
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AVHRR-3
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NOAA-16
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AVHRR-2
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TIROS-N
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments

Hansen, M. C. et al. 2013. âHigh
type: Document
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TIROS-N
type: Concept
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NOAA-10
type: Concept
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Product User Guide
type: Document
description: No further details.

AVHRR-3
type: Entity
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TIROS-N
type: Entity
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NOAA-11
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EARTH SCIENCE>CLIMATE INDICATORS>CRYOSPHERIC INDICATORS>SNOW COVER
type: Concept
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EUMETSAT, 2023b. PyGAC Fundamental Data Record Algorithm Theoretical Basis Document.
type: Document
description: No further details.

NOAA-7
type: Entity
type: Concept
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NOAA-14
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NOAA-12
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NOAA-12
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NOAA-14
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NOAA-6
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tc-15-4261-2021
type: Document
description: 4279. Copernicus Publications - No further details.
title: Wu, Xiaodan; Naegeli, Kathrin; Premier, Valentina; Marin, Carlo; Ma, Dujuan; Wang, Jingping; Wunderle, Stefan (2021). Evaluation of snow extent time series derived from Advanced Very High Resolution Radiometer global area coverage data (1982â2018) in the Hindu Kush Himalayas. The Cryosphere, 15(9), pp. 4261

NOAA-18
type: Entity
type: Concept
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CEDA Data Catalogue Page
type: Document
description: Detail and access information for the resource

Activity
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