easysnowdata.snow.viirs.load#

easysnowdata.snow.viirs.load(aoi: Any = None, time: Any = None, *, product: str = 'VJ110A1F', variables: str | Sequence[str] | None = None, source: str | None = None, granules: Any = None, mask: bool = False, chunks: Any = 'easysnowdata-default', **kwargs: Any) → Dataset[source]#

Load VIIRS snow cover as a lazy xarray.Dataset (time, y, x).

Parameters:

  • aoi – The usual spatial and temporal inputs.

  • time – The usual spatial and temporal inputs.

  • product – "VJ110A1F" (NOAA-20, cloud-gap-filled, default, from 2018-01-05), "VJ110A1", or the Suomi-NPP "VNP10A1F" / "VNP10A1" (from 2012-01-19; deliveries expected to stop 2026-11-02).

  • variables – Data fields to read; the product’s main field by default. The others are Cloud_Persistence, Basic_QA and Algorithm_Bit_Flags_QA.

  • mask – True NaN-masks the sentinel values; the default keeps the raw byte with its CF flags, so (ndsi_da >= 40).where(ndsi_da <= 100) is the usual binary mask.

Examples using easysnowdata.snow.viirs.load#

VIIRS snow cover (VNP10A1F)

VIIRS snow cover (VNP10A1F)