Datasets/SPL3SMP_E

d033·dataset

How wet the soil is

SMAP L3 Enhanced Soil Moisture 9km

NSIDC DAAC SPL3SMP_E cloud-native 9 km (Backus-Gilbert downscaled) daily HDF5 hydrologyagriculturedrought

Daily 9 km surface soil moisture (top 5 cm). Operational drought-monitoring input for USDM + USDA + global agencies.

SMAP L3 Enhanced Soil Moisture 9km

Daily 9 km surface soil moisture (top 5 cm). Operational drought-monitoring input for USDM + USDA + global agencies.

Access

Python (earthaccess): short_name='SPL3SMP_E'
Portal: https://nsidc.org/data/spl3smp_e

Gotchas

9 km is mathematically interpolated, not native; native is 36 km (SPL3SMP)
RFI contamination in parts of China, Middle East, Eastern Europe
Use L4 for root-zone moisture (model-assimilated)

Other datasets: d034

Sources

https://nsidc.org/data/spl3smp_e

The access details, code, and sources below are kept in the original English for technical accuracy.

Quick access (cloud-direct)

spl3smp_e_access.py

import earthaccess
earthaccess.login(strategy="netrc")

results = earthaccess.search_data(
    short_name="SPL3SMP_E",
    bounding_box=(-122.5, 37.2, -121.8, 37.9),
    temporal=("2024-01-01", "2024-12-31"),
)
files = earthaccess.open(results)   # stream from NSIDC DAAC

Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.

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