earth2studio.data.JPSS#

class earth2studio.data.JPSS(satellite='noaa-20', product_type='I', max_workers=24, cache=True, verbose=True, async_timeout=600)[source]#

JPSS VIIRS data source for NOAA-20, NOAA-21, and Suomi-NPP supporting both SDR (L1) and EDR (L2) products.

Parameters:

  • satellite (str, optional) – One of {“noaa-20”, “noaa-21”, “snpp”}. Default “noaa-20”.

  • product_type (str, optional) – Product type: “I” for imagery bands (375m), “M” for moderate bands (750m), or “L2” for Level 2 EDR products (750m). Default “I”.

  • max_workers (int, optional) – Maximum concurrent fetch tasks. Default 24.

  • cache (bool, optional) – Cache downloaded files under a deterministic hash. Default True.

  • verbose (bool, optional) – Show progress bars. Default True.

  • async_timeout (int, optional) – Timeout for async operations in seconds. Default 600.

Note

The returned data automatically includes ‘_lat’ and ‘_lon’ variables containing latitude and longitude coordinates for each pixel. These are appended to the last two dimensions of the data arrays variables as ‘_lat’ and ‘_lon’ variables.

For EDR (L2) products, not all products are available but generally include: - Land Surface Temperature, Surface Albedo, Snow Cover - Surface Reflectance, Active Fire Detection - Cloud properties (mask, phase, height, optical thickness) - Aerosol detection and Volcanic ash products

__call__(time, variable)[source]#

Function to get data

Parameters:

  • time (datetime | list[datetime] | TimeArray) – Timestamps to return data for (UTC).

  • variable (str | list[str] | VariableArray) – String, list of strings or array of strings that refer to variables to return. Must be in the JPSS lexicon.

Returns:

Data array containing the requested JPSS data

Return type:

xr.DataArray

async fetch(time, variable)[source]#

Async function to get data

Parameters:

  • time (datetime | list[datetime] | TimeArray) – Timestamps to return data for (UTC).

  • variable (str | list[str] | VariableArray) – String, list of strings or array of strings that refer to variables to return. Must be in the JPSS lexicon.

Returns:

Data array containing the requested JPSS data

Return type:

xr.DataArray

classmethod available(time, variable, satellite='noaa-20', product_type='I')[source]#

Checks if given date time is avaliable in JPSS

Parameters:

  • time (datetime | np.datetime64) – Date time to access

  • variable (str) – Variable to check

  • satellite (str, optional) – Satellite to check

  • product_type (str, optional) – Product type to check

Returns:

If date time is avaiable

Return type:

bool