Arctic Coastal Human Impact dataset (SACHI) derived from Sentinel-1/2, 2016-2020, Circum-Arctic

Bartsch, Annett; Widhalm, Barbara; von Baeckmann, Clemens; Efimova, Aleksandra; Tanguy, Rodrigue; Pointner, Georg

The SACHI (Sentinel-1/2 derived Arctic Coastal Human Impact) V1 dataset was developed as part of the HORIZON2020 project Nunataryuk by b.geos (www.bgeos.com). V1 covered a 100km buffer from the Arctic Coast (land area), for areas with permafrost near the coast. V2 has been prepared as part of the ESA project EO4PAC. It covers additional selected areas extending the coverage to the south. It is based on Sentinel-1 and Sentinel-2 data from 2016-2020 using the algorithms described in Bartsch et al. (2020). V1 is a supplement to Bartsch et al. (2023) and V2 to Tanguy et al. (2024).

V2 consists of two shape files.

1) SACHI_v2.shp - all identified objects with infrastructure/impact classes and auxiliary information 2) SACHI_v2_granules_acquisition_dates - processed Sentinel-2 granule extent polygons with dates of all used input data

Dataset reference: see Zenodo "Sentinel-1/2 derived Arctic Coastal Human Impact dataset (SACHI) v2" (zenodo.org)

Description of fields in SACHI_v2.shp:

class: SACHI class value. 11=linear transport infrastructure (asphalt), 12=linear transport infrastructure (gravel), 13=linear transport infrastructure (undefined), 20=buildings (and other constructions such as bridges), 30=other impacted area (includes gravel pads, mining sites), 40=airstrip, 50=reservoir or other water body impacted by human activities

Description of fields in SACHI_v2_granules_acquisition_dates.shp:

S2_date1 to S2_date3 - dates of individual Sentinel-2 images used for averaging S1_winter - year(s) of Sentinel-1 images used for averaging (months December and/or January)

Notes

Further support was received by ESA EO4PAC for v2, by ESA CCI+ Permafrost, HGF AI-CORE, and NSF Permafrost DiscoveryGateway for v1. The processing scheme was developed on a highly performant virtual machine (VM) provided by the Copernicus Research and User Support (RUS). Results are based on modified Copernicus data from 2016 to 2020.

Citation

In order to use these data, you must cite this data set with the following citation: Bartsch, A., Widhalm, B., von Baeckmann, C., Efimova, A., Tanguy, R., & Pointner, G. (2023). Sentinel-1/2 derived Arctic Coastal Human Impact dataset (SACHI) (v2.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.10160636

Contact

Bartsch, Annett

Metadata Access

DCAT in RDF/XML-Format

DCAT in Turtle-Format

DCAT in JSON-LD-Format

APGC Dataset Metadata in JSON-Format

Data and Resources

Additional Info

Field Value
Identifier DOI:10.5281/zenodo.10160636
Project(s) ESA EO4PAC - Earth Observation of permafrost affected Arctic Coasts, CHARTER – Drivers and Feedbacks of Changes in Arctic Terrestrial Biodiversity, Nunataryuk – Permafrost thaw and the changing arctic coast: science for socio-economic adaptation
Institute b.geos
Source https://doi.org/10.5281/zenodo.10160636
Publication Date 2023-11-20
Version v2.0
Product Arctic Coastal Human Impact dataset
Sensor Sentinel-1/2
Files
  1. SACHI_v2.shp - all identified objects with infrastructure/impact classes and auxiliary information
  2. SACHI_v2_granules_acquisition_dates.shp - processed Sentinel-2 granule extent polygons with dates of all used input data
Variables [Units]
  1. DN: SACHI class value. 11=linear transport infrastructure (asphalt), 12=linear transport infrastructure (gravel), 13=linear transport infrastructure (undefined), 20=buildings (and other constructions such as bridges), 30=other impacted area (includes gravel pads, mining sites), 40=airstrip, 50=reservoir or other water body impacted by human activities
  2. S2_date1 to S2_date3: dates of individual Sentinel-2 images used for averaging
  3. S1_winter: year(s) of Sentinel-1 images used for averaging (months December and/or January)
Region Circum-Arctic
Spatial Reference EPSG:3995 WGS 84/Arctic Polar Stereographic
Spatial Resolution
Spatial Coverage Latitude 54.017542 to 82.852920, Longitude -180.000000 to 180.000000
Temporal Coverage 2016 to 2020
Temporal Resolution
Format Shapefile
Is Supplement To

Bartsch, A., G. Pointner, I. Nitze, A. Efimova, D. Jakober, S. Ley, E. Högström, G. Grosse, P. Schweitzer (2021): Expanding infrastructure and growing anthropogenic impacts along Arctic coasts. Environmental Research Letters. https://doi.org/10.1088/1748-9326/ac3176
Related to

Bartsch, A., Pointner, G., Ingeman-Nielsen, T. & Lu, W. (2020), ‘Towards circumpolar mapping of Arctic settlements and infrastructure based on Sentinel-1 and Sentinel-2’, Remote Sensing 12(15), 2368.

Rodrigue Tanguy. Exposure of Arctic coastal settlements to coastal erosion and permafrost warming. ESS Open Archive. February 02, 2024. DOI: 10.22541/essoar.170688733.32243683/v1

Bartsch, A., Pointner, G., & Nitze, I. (2021). Sentinel-1/2 derived Arctic Coastal Human Impact dataset (SACHI) (Version 1) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.4925911

Dataset extent