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Digital Earth Africa Fractional Cover

agriculture cog deafrica disaster response earth observation geospatial natural resource satellite imagery stac sustainability

Description

Fractional cover (FC) describes the landscape in terms of coverage by green vegetation, non-green vegetation (including deciduous trees during autumn, dry grass, etc.) and bare soil. It provides insight into how areas of dry vegetation and/or bare soil and green vegetation are changing over time. The product is derived from Landsat satellite data, using an algorithm developed by the Joint Remote Sensing Research Program. Digital Earth Africa's FC service has two components. Fractional Cover is estimated from each Landsat scene, providing measurements from individual days. Fractional Cover Annual Summary (Percentiles) provides 10th, 50th, and 90th percentiles estimated independently for the green vegetation, non-green vegetation, and bare soil fractions observed in each calendar year (1st of January - 31st December). While the scene based Fractional Cover can be used to study dynamic processes, the annual summaries make it easier to analyse year to year changes. The percentiles provide robust estimates of the low, median and high proportion values observed for each cover type in a year, which can be used to characterise the land cover.

Update Frequency

New scene-level data is added as new Landsat data is available. New summaries are available soon after data is available for a year.

License

DE Africa makes this data available under the Creative Commons Attribute 4.0 license https://creativecommons.org/licenses/by/4.0/.

Documentation

https://docs.digitalearthafrica.org/en/latest/data_specs/Fractional_Cover_specs.html

Managed By

See all datasets managed by Digital Earth Africa.

Contact

helpdesk@digitalearthafrica.org

How to Cite

Digital Earth Africa Fractional Cover was accessed on DATE from https://registry.opendata.aws/deafrica-fractional-cover.

Usage Examples

Tutorials
Tools & Applications
Publications

Resources on AWS

  • Description
    Fractional Cover data
    Resource type
    S3 Bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::deafrica-services/fc_ls
    AWS Region
    af-south-1
    AWS CLI Access (No AWS account required)
    aws s3 ls --region af-south-1 --no-sign-request s3://deafrica-services/fc_ls/
    Explore
    STAC V1.0.0 endpoint
  • Description
    Fractional Cover Annual Summary data
    Resource type
    S3 Bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::deafrica-services/fc_ls_summary_annual
    AWS Region
    af-south-1
    AWS CLI Access (No AWS account required)
    aws s3 ls --region af-south-1 --no-sign-request s3://deafrica-services/fc_ls_summary_annual/
    Explore
    STAC V1.0.0 endpoint
  • Description
    S3 Inventory
    Resource type
    S3 Bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::deafrica-services-inventory
    AWS Region
    af-south-1
    AWS CLI Access (No AWS account required)
    aws s3 ls --region af-south-1 --no-sign-request s3://deafrica-services-inventory/
  • Description
    New scene notifications, can subscribe with Lambda or SQS. Message contains entire STAC record for each new Item
    Resource type
    SNS Topic
    Amazon Resource Name (ARN)
    arn:aws:sns:af-south-1:565417506782:deafrica-landsat-wofs
    AWS Region
    af-south-1
  • Description
    Bucket creation event notification, can subscribe with Lambda or SQS. Message sent by the s3 bucket for all object create events.
    Resource type
    SNS Topic
    Amazon Resource Name (ARN)
    arn:aws:sns:af-south-1:543785577597:deafrica-services-topic
    AWS Region
    af-south-1

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