TY  - Data
T1  - ARC-1990: 30m Resolution Land Cover Map of Circumpolar Arctic in 1990
A1  - Shuai Yanmin
A1  - Qu Ge
A1  - Huo Sihui
A1  - Ma Xianwei
PY  - 2026
DA  - 2026-02-12
PB  - National Cryosphere Desert Data Center
AB  - This dataset is a historical land cover classification product for the Circumpolar Arctic region in 1990, with a spatial resolution of 30 meters, designed to provide historical baseline data for long-term land cover change research in the Arctic. The product employs the same Arctic-specific classification system as ARC-2024, comprising 9 land cover classes: Low-shrub (LS), Dwarf-shrub (DS), Grass (GR), Small low-growing forb (SF), Wetlands (WL), Water (WA), Moss and Lichen (ML), Bare ground (BG), and Ice and Snow (IS). Given the extremely limited spatial extent of Built-up area (BA) in the Circumpolar Arctic region in 1990, this class is excluded from the dataset. ARC-1990 is constructed based on Landsat 5 TM historical imagery data, employing a time-series matching classification approach that achieves large-scale automated classification through a partial phenological signal matching mechanism. This product forms a temporal series paired dataset with ARC-2024, supporting land cover change detection, tundra vegetation succession analysis, and climate change ecological response research in the Arctic region during 1990–2024, providing critical data support for understanding Arctic ecosystem changes over the past three decades.
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/b26d033c-5848-4fcb-8334-f5dc5d27fa39
ER  -