EFG M2.5 Sea ice – current maps

M2. Pelagic ocean waters biome

M2
valid
Published

June 7, 2024

This page provides information about the valid indicative distribution map for the ecosystem functional group M2.5 Sea ice. For older or alternative maps, see here.

Methods

Here is the methods summary for Map code and version: M2.5.web.orig v1.0.

Indicative distributions of sea ice were obtained from Fetterer et al. (2017). To approximate the maximum annual global extent, we used the monthly extent for March 2019 for the northern hemisphere, and the monthly extent for September 2018 for the southern hemisphere. Occurrences were mapped at 30 arc second spatial resolution.

Datasets

G02135-Sea-Ice-3.0 (Fetterer et al. 2017):

Source of spatial indicator from remote sensing data. Resolution: >1km, time series. Accuracy evaluation: quantitative (spatial layer).

dataset url
G02135-Sea-Ice-3.0 https://nsidc.org/data/G02135/versions/3

Processing

Processing steps used in this map are: NA.

Map evaluation

This map is considered to be a Medium quality map series based on the following characteristics:

Concept alignment is Direct,specific.

Ground observations are indirect.

The accuracy evaluation Quantitative accuracy assessment,documented,quantitative.

How to use the data

Available files

Following maps are considered current and valid indicative distribution maps for this ecosystem functional group. Web navigation maps are optimised for use in webapps, but they have similar methods and differ only in details of format and processing.

  • Indicative Map (code: M2.5.IM.orig, version v1.0)
  • Web navigation (code: M2.5.web.orig, version v1.0)

You can download geospatial data for this map from the following sources:

M2.5.IM.orig (v1.0): Google Cloud bucket :: Zenodo repository (bundle of maps)

M2.5.web.orig (v1.0): Google Cloud bucket :: Zenodo repository (bundle of maps) :: Zenodo repository (EFG map) :: Mapbox tileset :: Earth Engine assets

Note that you need to login to some services like mapbox or earthengine, and in some cases you also need to request access to the files.

License information

Indicative maps have been released with a Creative Commons Attribution 4.0 International license.

Datasets used to create this map might have some restriction for commercial use, see details below.

dataset license_info
G02135-Sea-Ice-3.0 https://nsidc.org/data/data-policies#anchor-metadata-and-data-format-standards

References

References used in this version of the maps.

  • Fetterer F, Knowles K, Meier WN, Savoie M, Windnagel AK (2017) Sea Ice Index, Version 3. Monthly Sea Ice Extent NSIDC: National Snow and Ice Data Center Boulder, Colorado USA. Updated daily, Accessed September 2019 DOI:10.7265/N5K072F8