Arctic Coastal Change

General descriptionThe Arctic Coastal Change image collection consists of multitemporal coastal land cover data for the entire Arctic coast for the period 1984–2023. Coastal land cover is divided into land, water, and ice. Land cover is averaged over five-year time-steps, starting from 1984–1988 and ending in 2019–2023. The dataset has been produced using the full Landsat collection in Google Earth Engine (namely, Landsat 5, Landsat 7 and Landsat 8). This is considered a beta version, as the paper describing the data processing is currently under review. Data structureThe pan-Arctic dataset has been divided into 24 large tiles. The tiles are described in the accompanying vector file 'ACC_tiles.geojson' and distributed as zip files. The dataset consists of one image for each of the eight time-steps, indicated with the image property 'timestep'. Each image has two bands: 1) land cover and 2) the number of valid observations. The spatial resolution of the dataset is 30 meters. The pixel and property values indicate following: Band: 'landcover'1 = land2 = water3 = iceNA = not enough valid satellite data for reliable land cover classification or outside 10-km coastal zone Band: 'observations'1 = 5–92 = 10–143 = 15–294 = 30 or moreNA = less than 5 valid observations Property: 'timestep'1984 = time-step 1984–19881989 = time-step 1989–19931994 = time-step 1994–19981999 = time-step 1999–20032004 = time-step 2004–20082009 = time-step 2009–20132014 = time-step 2014–20182019 = time-step 2019–2023