European Space Agency (ESA) GlobSnow L3B mean STD of 7 day running mean Snow Water Equivalent (SWE) Estimates (1979-2013)

The ESA funded GlobSnow project produced snow water equivalent (SWE) 7-day estimates and standard errors for the Northern Hemisphere for the years 1979-2013.

SWE describes the amount of liquid water in the snow pack that would be formed if the snow pack was completely melted. Weekly Aggregated Snow Water Equivalent (Weekly L3B SWE) were calculated for each day based on a 7-day sliding time window aggregation of the daily SWE product.

The SWE product shall cover the Northern Hemisphere, excluding the mountainous areas, Greenland, the glaciers and snow on ice (lakes/seas/oceans)

The spatial resolution of the product is 25 km on EASE-grid projection.

Construction of the 30 years historical data set will be carried out using SMMR, SSM/I and SSMI/S data along with ground-based weather station data. The data are utilized for the different years as follows:

1979/09/11 - 1987/10/30 SMMR (Scanning Multichannel Microwave Radiometer onboard Nimbus-7 satellite)

1987/11/01 - 2008/12/31 SSM/I (Special Sensor Microwave/Imager onboard the DMSP satellite series F8/F11/F13)

2009/01/01 - present SSM/I(S) (Special Sensor Microwave/Imager (Sounder) onboard the DMSP satellite series F17/F18/)

These data may be redistributed and used without restriction.

Date (Publication): 2015-11-21T16:18:32

Date (Creation): 2015-11-21T16:18:32

Citation identifier: https://catalogue.ceda.ac.uk/uuid/48d69bd4dd89464fb1f32c3669bfaa94

Citation identifier: Finnish Meteorological Institute (FMI) / 48d69bd4dd89464fb1f32c3669bfaa94

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Unavailable	Luojus, Kari	Unavailable	Author
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Custodian
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Owner
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Distributor
Unavailable	Pulliainen, Jouni	Unavailable	Principal investigator
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	pointofContact
Finnish Meteorological Institute (FMI)		unknown	Publisher

Maintenance and update frequency: Not planned

Update scope: Dataset

Keywords

esa
globsnow
swe
snow
climate
northern hemisphere
monthly
error
estimate

GEMET - INSPIRE themes, version 1.0

orthoimagery

Access constraints: Other restrictions

Other constraints: Public data: access to these data is available to both registered and non-registered users.

Use constraints: Other restrictions

Other constraints: Under the following licence http://creativecommons.org/licenses/by/3.0/, 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.

Spatial representation type: Grid

Language: English

Topic category

Imagery base maps earth cover

Begin date: 1979-09-10T23:00:00

End date: 2013-05-30T22:59:59

Unique resource identifier: WGS 84

Distribution format

Name	Version
The SWE products are distributed in NetCDF-4 classic format, following the CF-1.6 convention: a single file contains the data for a single variable on the date given in the file name.

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
	https://catalogue.ceda.ac.uk/uuid/48d69bd4dd89464fb1f32c3669bfaa94	CEDA Data Catalogue Page

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/neodc/esa_globsnow/data/v2.0/square_of_standard_error_L3B_7day_mean	DOWNLOAD

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/neodc/esa_globsnow/doc/GlobSnow-FInalReport.pdf	GlobSnow 2 Final Report

OnLine resource

Protocol	Linkage	Name
	http://www.globsnow.info/index.php?page=Snow_Water_Equivalent	ESA Globsnow SWE webpage

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/neodc/esa_globsnow/doc/GlobSnow-2_final_newsletter.pdf	GlobSnow2 Final Newsletter

OnLine resource

Protocol	Linkage	Name
	http://www.sciencedirect.com/science/article/pii/S0034425706000241	Basic Methodology: Jouni Pulliainen, Mapping of snow water equivalent and snow depth in boreal and sub-arctic zones by assimilating space-borne microwave radiometer data and ground-based observations, Remote Sensing of Environment, Volume 101, Issue 2, 30 March 2006, Pages 257-269, ISSN 0034-4257, http://dx.doi.org/10.1016/j.rse.2006.01.002.

OnLine resource

Protocol	Linkage	Name
	http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4914809&tag=1	Snowmelt detection: M. Takala, J. Pulliainen, S. J. Metsamaki and J. T. Koskinen, "Detection of Snowmelt Using Spaceborne Microwave Radiometer Data in Eurasia From 1979 to 2007," in IEEE Transactions on Geoscience and Remote Sensing, vol. 47, no. 9, pp. 2996-3007, Sept. 2009. doi: 10.1109/TGRS.2009.2018442

OnLine resource

Protocol	Linkage	Name
	http://www.sciencedirect.com/science/article/pii/S0034425711003166	Implementation: Matias Takala, Kari Luojus, Jouni Pulliainen, Chris Derksen, Juha Lemmetyinen, Juha-Petri Kärnä, Jarkko Koskinen, Bojan Bojkov, Estimating northern hemisphere snow water equivalent for climate research through assimilation of space-borne radiometer data and ground-based measurements, Remote Sensing of Environment, Volume 115, Issue 12, 15 December 2011, Pages 3517-3529, ISSN 0034-4257, http://dx.doi.org/10.1016/j.rse.2011.08.014.

OnLine resource

Protocol	Linkage	Name
	https://zenodo.org/record/7356945/files/GS2_SWE_ATBD.pdf	SWE Algorithm Theoretical Basis

Hierarchy level: Dataset

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication): 2010-12-08

Statement: SWE Data provided by the FMI as part of the CLIPC project in 2015.

Metadata

File identifier: 48d69bd4dd89464fb1f32c3669bfaa94 XML

Metadata language: English

Character set: UTF8

Parent identifier: European Space Agency (ESA) GlobSnow Snow Water Equivalent (SWE) v2.0 products
2f068226c7164a799cf202d1e7af07b2

Hierarchy level: Dataset

Date stamp: 2025-12-04T03:06:22

Metadata standard name: UK GEMINI

Metadata standard version: 2.3

Metadata author

Organisation name	Individual name	Electronic mail address	Role
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Point of contact

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